Cooking apparatus including digital controller door and method of improving speech recognition performance

Abstract

The present invention relates to a cooking apparatus including a digital controller door and a method of improving voice recognition performance, the cooking apparatus including the digital controller door according to an embodiment of the present invention includes a function unit providing a cooking function, the digital controller door including a microphone section receiving a voice of a user, and if the microphone section receives a wake-up word, the function unit provides a voice recognition function. If so, the controller executes a command word recognition pattern to receive a command word during a preset time period. Therefore, the technology of accurately recognizing voice in the process of executing voice recognition by the cooking equipment can be realized.

Description

Technical Field

[0001] This invention relates to cooking equipment including a digital controller door and a method for improving voice recognition performance. Background Technology

[0002] Cooking appliances are household appliances that use microwaves, a type of electromagnetic wave, and / or heat from a heater to cook food. Typically, cooking appliances consist of a cavity that serves as a space for placing and cooking food, and a door that allows the cavity to be opened and closed.

[0003] When cooking equipment is installed indoors, factors such as the effective use of the equipment and saving installation space need to be considered.

[0004] Therefore, the cooking equipment can be positioned adjacent to a heating cooking device, such as a heated oven or gas stove. Specifically, the cooking equipment can be positioned above the heating cooking device.

[0005] By placing the cooking equipment above the heating element, users can reduce movement within the vicinity of both the cooking equipment and the heating element, thus facilitating food preparation. Additionally, the cooking equipment can be used as a range hood to expel heat and oil vapors generated by the heating element.

[0006] When the cooking equipment is positioned above the heating cooking device, the hot air and oil vapor generated by the heating cooking device positioned below the cooking equipment may have an adverse effect on the operation of the cooking equipment.

[0007] For example, a display unit can be installed on the front of the door of the cooking equipment to provide the user with various information. The user can know the cooking status of the food through the display unit.

[0008] Furthermore, when the display unit is connected to other home appliances and functions as a hub for them, information other than food cooking can be obtained through the display unit. Additionally, cooking instructions and various other commands can be input on the display unit via touch.

[0009] With the cooking equipment positioned above the heating cooking device, hot air and oil vapor generated by the heating cooking device may penetrate into the display unit and other components installed on the door.

[0010] It is necessary to prevent heat, oil vapors, etc., from damaging the display of the cooking equipment and other components installed on the door or causing them to malfunction.

[0011] Additionally, to vent the fumes generated during heating and cooking, the cooking device may include a pre-defined fan. On the other hand, the cooking device may offer voice recognition functionality, but the noise generated by the device can interfere with its performance. Therefore, this issue needs to be addressed. Summary of the Invention

[0012] This specification addresses the aforementioned problems by providing a cooking device that enables various software or hardware components integrated into the door of the cooking device to operate smoothly with the control components that control the cooking device, and provides a technology that can control the components of the cooking device based on recognition status to accurately recognize speech during the process of speech recognition in the cooking device.

[0013] This specification provides a technique for controlling the actions of a component that generates noise during speech recognition.

[0014] This specification provides a technique for interrupting or reducing noise generation based on speech recognition patterns.

[0015] The purpose of this invention is not limited to the objectives mentioned above. Those skilled in the art will clearly understand other objectives and advantages of this invention not mentioned above through the following description, and these will become even clearer through the embodiments of this invention. Furthermore, the objectives and advantages of this invention can be readily achieved through the methods and combinations thereof as stated in the claims.

[0016] One embodiment of the present invention is a cooking device including a digital controller door. The cooking device includes a functional unit that provides cooking functions. The digital controller door includes a microphone that receives the user's voice. If the microphone receives a wake word, the controller executes a command word recognition mode in order to receive command words during a preset time period.

[0017] An embodiment of the present invention provides a method for improving speech recognition performance, applied to a control method for a cooking device including a functional unit providing cooking functions. The method for improving speech recognition performance includes: a step of receiving a wake-up word by a microphone; and a step of a controller executing a command word recognition mode in order to receive command words during a preset time period.

[0018] When the present invention is applied, various software or hardware integrated into the door of the cooking device can operate smoothly with the control components that control the cooking device, and can control the components of the cooking device according to the recognition status, so as to accurately recognize the voice during the voice recognition process of the cooking device.

[0019] When this invention is applied, the actions of some of the components that generate noise during the speech recognition process are controlled, and the generation of noise is interrupted or reduced according to the speech recognition pattern, thereby enabling the human-machine interface of the cooking equipment to operate accurately.

[0020] The effects of the present invention are not limited to those described above; those skilled in the art can readily derive various effects of the present invention from its structure. Attached Figure Description

[0021] Figure 1 This is a conceptual diagram of a cooking device including a digital controller door according to an embodiment of the present invention.

[0022] Figure 2 This is a diagram illustrating the constituent elements of a digital controller gate and the constituent elements of a functional unit according to an embodiment of the present invention.

[0023] Figure 3 This is a diagram illustrating the categories of functions performed by the OS controller and function controller according to an embodiment of the present invention.

[0024] Figure 4 This is a perspective view of a cooking apparatus according to an embodiment of the present invention.

[0025] Figure 5 It means in Figure 4 A diagram showing the open state of the digital controller door 100.

[0026] Figure 6 This is a perspective view of the digital controller door of a cooking device according to an embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram showing the location of a cooking device according to an embodiment of the present invention.

[0028] Figure 8 This diagram illustrates the process by which a cooking device according to an embodiment of the present invention recognizes wake words and command words.

[0029] Figure 9 This diagram illustrates the process of controlling the operation of a ventilation fan or door fan in a command word recognition mode according to an embodiment of the present invention.

[0030] Figure 10 This is a diagram illustrating the process by which the OS controller adjusts the reference volume in the command word recognition mode according to an embodiment of the present invention.

[0031] Figure 11 This is a diagram illustrating the process by which the OS controller adjusts the reference door fan level in the command word recognition mode according to an embodiment of the present invention.

[0032] Figure 12This is a diagram illustrating the process by which the OS controller adjusts the baseline ventilation fan level in the command word recognition mode according to an embodiment of the present invention.

[0033] Figure 13 This diagram illustrates the process by which the OS controller of an embodiment of the present invention executes a command word recognition enhancement mode in response to repeated input of a wake word.

[0034] Figure 14 This is a diagram illustrating the process of voice recognition performed by a cooking device including a digital controller door according to another embodiment of the present invention.

[0035] Figure 15 This diagram illustrates the process of adjusting the operating level of a ventilation fan in a command word recognition mode according to an embodiment of the present invention.

[0036] Figure 16 This diagram illustrates the process of adjusting the operating level of a door fan in a command word recognition mode according to an embodiment of the present invention.

[0037] Figure 17 This is a diagram illustrating the process of controlling the operating level of a door fan / ventilation fan according to an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures

[0039] 100: Digital controller gate; 200: OS controller

[0040] 500: Functional Unit; 550: Functional Controller

[0041] 1000: Cooking equipment Detailed Implementation

[0042] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings, enabling those skilled in the art to readily implement them. The present invention can be implemented in various different forms and is not limited to the embodiments described herein.

[0043] To clearly illustrate the invention, irrelevant details have been omitted, and the same reference numerals have been used for the same or similar constituent elements throughout the specification. Furthermore, some embodiments of the invention have been described in detail with reference to the exemplary drawings. In assigning reference numerals to the constituent elements of the various drawings, the same constituent elements are represented by the same symbols as much as possible, even when shown in different drawings. Additionally, in describing the invention, detailed descriptions of related well-known structures or functions may be omitted if it is determined that such detailed descriptions would obscure the essence of the invention.

[0044] When describing the constituent elements of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are used only to distinguish the constituent elements from other constituent elements and do not limit the nature, order, sequence, or quantity of the corresponding constituent elements. When a constituent element is described as being "connected," "joined," or "linked" to other constituent elements, it should be understood that the constituent element can be directly connected or joined to the other constituent elements, but it is also possible that other constituent elements are interposed between the constituent elements, or that the constituent elements are "connected," "joined," or "linked" through other constituent elements.

[0045] In addition, in the process of implementing the present invention, for ease of explanation, the constituent elements can be subdivided for explanation, but these constituent elements can also be implemented in a device or a module, or a constituent element can be divided into a plurality of devices or modules for implementation.

[0046] This invention relates to a technique for controlling a cooking appliance by configuring a digital controller door on the front of the appliance.

[0047] In this invention, the door of the microwave oven, which is located above an oven or gas stove, is made of an LCD or OLED (Organic Light-Emitting Diode) screen. The LCD or OLED screen's Android system and the microwave oven's Micom (microcomputer) cooperate with each other, enabling the LCD or OLED components to operate according to the operation of various microwave ovens / external environments or to control specific functions.

[0048] The digital controller door of this invention can be integrated with a cooking appliance to open and close the interior of the appliance. One embodiment of the cooking appliance of this invention is a microwave oven, but the invention is not limited thereto. The cooking appliance of this invention, including a digital controller door, is an example of various cooking appliances, including those with doors equipped with displays such as LCDs or OLEDs that provide various user interfaces like touchscreens, and capable of housing and cooking food inside. The invention is not limited to a specific display panel type.

[0049] Figure 1 This is a conceptual diagram of a cooking device including a digital controller door according to an embodiment of the present invention.

[0050] The cooking appliance 1000 includes a digital controller door 100 on its front side. The digital controller door 100 may include one or more display units, which may display information about the interior of the cooking appliance 1000 or information related to its operation. Furthermore, the display units of the digital controller door 100 may provide a touch input interface for receiving prescribed instructions from a user.

[0051] The digital controller door 100 can be opened in the manner shown in 1000a, 1000b, or 1000c. 1000a represents an embodiment in which the interior of the cooking appliance 1000a is opened by opening the right side of the cooking appliance 1000a through the digital controller door 100. 1000b represents an embodiment in which the interior of the cooking appliance 1000b is opened by opening the lower side of the cooking appliance 1000b through the digital controller door 100. 1000c represents an embodiment in which the interior of the cooking appliance 1000c is opened by opening the upper side of the cooking appliance 1000c through the digital controller door 100.

[0052] A display unit 160 can be mounted on the front of the digital controller door 100 to provide various information to the user. The user can use the display unit 160 to know the cooking status of the food. Although an LCD is used as an example of the display unit 160, the present invention is not limited thereto, and the display unit 160 may include various display panels. In addition, a touch panel for touch input may be incorporated into the display unit 160.

[0053] The digital controller door 100 controls the operation of the cooking appliance 1000 and outputs various information. The cooking appliance 1000 cooks using microwaves or a heater. Thus, the digital control functions provided by the digital controller door 100 and the cooking functions of the cooking appliance 1000 can be provided in different ways in different areas.

[0054] On the other hand, the digital controller gate 100 of the present invention can also function as a hub. That is, it acts as a hub for other home appliances, displaying information transmitted by other home appliances on the display unit 160. In this process, the user can obtain information other than food cooking through the display unit 160. In addition, the user can input cooking instructions and various other commands on the display unit 160 by touch.

[0055] Therefore, this specification describes the following method and configuration, wherein the digital controller gate 100 and the cooking device 1000 each include independent control components, and the functions of the cooking device are controlled by these control components cooperating with each other.

[0056] Figure 2 This diagram illustrates the constituent elements of a digital controller door and the constituent elements of a functional unit according to an embodiment of the present invention. Each constituent element is conceptually arranged and is not limited to a specific physical location or material.

[0057] The digital controller door 100 can function as an IoT hub. The digital controller door 100 may include an OS controller 200. Additionally, the digital controller door 100 may include a camera unit 110. Furthermore, the digital controller door 100 may include a communication unit 120. Additionally, the digital controller door 100 may include a speaker / microphone unit 130. Additionally, the digital controller door 100 may include a sensor unit 140. Additionally, the digital controller door 100 may include a display unit 160. Additionally, the digital controller door 100 may include an application unit 170. Furthermore, the digital controller door 100 may include a door fan 180. The door fan, in one embodiment, is a DC fan that cools the heat generated by the digital controller door 100. In particular, the door fan 180 cools the heat generated by the display unit 160.

[0058] Hereinafter, the OS controller 200, camera unit 110, communication unit 120, speaker / microphone unit 130, sensor unit 140, display unit 160, application unit 170, and door fan 180 will be referred to as the elements of the digital controller door 100.

[0059] Functional unit 500 includes an AC input section 510, a power supply section 520, a function controller 550, a cooking equipment function providing section 560, an interior light 570, an exterior light 580, a ventilation fan 590, etc. Functional unit 500 and digital controller gate 100 are configured in a logical manner for ease of explanation. Functional unit 500 can be composed of... Figure 4 The body 1010 shown is implemented. Therefore, in addition to the functional unit 500... Figure 2 In addition to the constituent elements shown, various physical constituent elements required for implementation by the main body 1010 may also be included.

[0060] The OS controller 200 controls various components of the digital controller gate 100.

[0061] Additionally, the OS controller 200 transmits specified signals to the function controller 550, enabling the function controller 550 to control the execution of specific functions of the cooking appliance 1000. Furthermore, the function controller 550 can transmit signals to the OS controller 200. This is to notify the OS controller 200 of results related to the execution of specific functions of the cooking appliance 1000. The OS controller 200 can operate based on a specific OS (e.g., Android).

[0062] According to an embodiment, the function controller 550 and the OS controller 200 can operate independently and can send and receive prescribed signals when there is information requiring notification to each other. The signal type can be based on various communication protocols such as wired or wireless communication. According to an embodiment, when the OS controller 200 receives information from the user and is instructed to perform a specific function of the cooking device, the OS controller 200 can transmit a specific signal to the function controller 550. In this case, the function controller 550 activates the functional unit 500, such as the main body 1010.

[0063] The function controller 550 includes, as one embodiment, a microcomputer (micom) that generates signals for actuating a functional unit 500, such as the main body 1010.

[0064] The camera unit 110 can be configured on the digital controller door and capture images of the exterior or periphery of the cooking equipment 1000 or the cooking space inside the cooking equipment 1000.

[0065] Additionally, the camera unit 110 can be configured inside the digital controller door 100. The camera unit 110 can capture images of the interior of the cooking equipment 1000, allowing the user to check the cooking status of the food placed inside.

[0066] Therefore, the camera unit 110 can be configured to face the outside (user side) of the digital controller door 100 and the inside (cooking appliance interior) of the digital controller door 100. In this case, the display unit 160 can output images of the outside or the inside based on the cooking state or the state of the function performed by the digital controller door 100.

[0067] The communication unit 120 can perform various types of wired or wireless communication functions. The communication unit can communicate with other devices (e.g., external servers, indoor switches, or other home appliances) using communication protocols such as Wi-Fi and Bluetooth.

[0068] The speaker / microphone unit 130 can generate voice prompts, reminder sounds, etc., required for the operation of the cooking appliance 1000, and can receive specified external voice commands or external sounds. The speaker / microphone unit 130 can be integrated as a single unit or configured in different locations.

[0069] The sensor unit 140 senses the external or internal environment of the cooking appliance 1000. For example, the sensor unit 140 may include a temperature sensor, an illuminance sensor, a human body sensor, a humidity sensor, etc.

[0070] The display unit 160 outputs visual information to be provided to the user. The information provided by the display unit 160 includes the cooking function or status of the cooking device 1000 in operation, the interface for controlling the cooking device 1000, and information about the surrounding environment in which the cooking device 1000 is configured.

[0071] Furthermore, when the digital controller door 100 operates as an IoT hub, the display unit 160 can display various information in addition to cooking information. Additionally, the display unit 160 can convert user touches into input signals.

[0072] Application unit 170 stores various applications that are run by digital controller gate 100. OS controller 200 can run the applications stored in application unit 170 and display the results on display unit 160.

[0073] The door fan 180, exemplified by a DC fan, is a fan used to cool the heat generated by various electronic devices associated with the digital controller door. The door fan 180 can cool the heat generated by the display unit 160 or the OS controller 200.

[0074] OS controller 200 can download various applications through communication unit 120, and then store and install them in application unit 170.

[0075] One embodiment of the present invention includes applications that control the cooking of the cooking appliance 1000, applications related to images or videos to be displayed during the operation of the cooking appliance 1000, and other applications that are directly or indirectly related to the operation or function of the cooking appliance 1000. In this case, the OS controller 200 can use the application to control the function controller 550, thereby controlling the function of the cooking appliance 1000.

[0076] Additionally, one application of this invention includes the use of the digital controller gate 100 as an IoT hub.

[0077] The AC input unit 510, which constitutes the functional unit 500, receives the power required for the operation of the cooking device 1000. The received power is supplied to the function controller 550 and the OS controller 200 via the power supply unit 520.

[0078] The function controller 550 controls the functions of the cooking appliance 1000 by receiving signals from the OS controller 200. The function controller 550 can control the functions of the cooking appliance function provider 560, the interior light 570, the exterior light 580, the ventilation fan 590, and the thermistor 595 based on the signals received from the OS controller 200. Hereinafter, the cooking appliance function provider 560, the interior light 570, the exterior light 580, the ventilation fan 590, and the thermistor 595 will be referred to as elements of the function unit 500.

[0079] The cooking equipment function providing unit 560 cooks food that has entered the cooking equipment 1000 by generating microwaves or heater heat.

[0080] The interior light 570 is a light installed inside the cooking appliance 1000, which is opened and closed via the digital controller door 100. The interior light 570 can be turned on and off when the digital controller door 100 is opened and closed. Alternatively, the interior light 570 can be turned on when the cooking appliance 1000 is cooking, allowing the internal camera to capture images.

[0081] The external light 580 is a light source that is configured to be positioned at the lower or upper end of the cooking appliance 1000. When the cooking appliance 1000 is configured above an additional stove, the external light 580 may be configured at the lower end of the cooking appliance 1000.

[0082] The Vent Fan 590 is a fan that directs the hot air generated in the stove to the outside.

[0083] Thermistor 595 is a component configured in functional unit 500 that senses temperature. One or more thermistors 595 may be configured in cooking appliance 1000.

[0084] According to one embodiment of the present invention, the thermistor 595 can provide the sensed temperature information to the function controller 550. According to another embodiment of the present invention, the thermistor 595 can be part of the sensor unit 140, in which case the sensed temperature information can be provided to the OS controller 200 that controls the sensor unit 140.

[0085] Food entering the cooking equipment 1000 is cooked by the operation of the cooking equipment function supply unit 560. During this process, the function controller 550 and the OS controller 200 can also send and receive information at preset time intervals.

[0086] The OS controller 200 provides UI / UX functions. Furthermore, it transmits specified signals to the function controller 550, which controls the operation of the cooking equipment 1000, such as the main body 1010 or the function unit 500. Additionally, the function controller 550 can provide information values ​​generated when controlling the operation of the cooking equipment function providing unit 560, etc., to the OS controller 200.

[0087] Therefore, the control flow between the OS controller 200 and the function controller 550 is a process in which the OS controller 200 transmits a specified signal to the function controller 550 and then receives a specified control result from the function controller 550.

[0088] The OS controller 200 and the function controller 550 can communicate via wired or wireless means. The OS controller 200 and the function controller 550 can communicate using various communication protocols, and embodiments of the present invention are not limited to any specific communication protocol.

[0089] like Figure 2 As shown, the communication link between the function controller 550 and the OS controller 200 for transmitting specified data or performing control can be called an F_O link or an uplink. The communication link between the OS controller 200 and the function controller 550 for transmitting specified data or performing control can be called an O_F link or a downlink. However, embodiments of the present invention are not limited to specific names or directions such as uplink / downlink; the links can be distinguished based on the direction of data transmission between the constituent elements 550 and 200.

[0090] In embodiments of the present invention, the link may physically use one or more lines or one or more communication media. Furthermore, in this specification, each data transmission direction is given a separate name for logical distinction.

[0091] According to one embodiment of the present invention, in the case of wired communication, the OS controller 200 and the function controller 550 can use communication protocols such as UART (Universal Asynchronous Receiver / Transmitter) and USB (Universal Serial Bus).

[0092] According to one embodiment of the present invention, in the case of wireless communication, the OS controller 200 and the function controller 550 can use communication protocols such as Zigbee, Wi-Fi, and Bluetooth.

[0093] The OS controller 200 and the function controller 550 may each include a separate memory (internal memory) that can store function result information or error information generated during the execution of functions.

[0094] Figure 3 This diagram illustrates the classification of functions performed by the OS controller and function controller according to an embodiment of the present invention. Each function includes the state in which each controller 200, 550 performs the corresponding function.

[0095] Each controller 200 and 550 can execute its own function simultaneously or sequentially.

[0096] The function controller 550 controls the function unit 500 that provides cooking functions. The OS (Operating System) controller 200 sends signals to the function controller 550. Furthermore, the function controller 550 instructs the function unit 500 to perform its actions. On the other hand, the OS (Operating System) controller 200 controls the digital controller door 100 that provides the human-machine interface.

[0097] The functions performed by the function controller 550 include cooking function execution (F_COOK). Additionally, the function controller 550 performs functions including data assurance during cooking execution (F_DATA_COL). Furthermore, the function controller 550 performs functions including component monitoring (F_ELE_MONITORING). Additionally, the function controller 550 performs functions including communication with the OS controller 200 (F_COM). Finally, the function controller 550 performs OS controller monitoring (F_OS_MONITORING). The OS controller 200 and the function controller 550 can operate independently and communicate the status or operational conditions of each component through signal transmission and reception.

[0098] In the cooking function execution (F_COOK), the function controller 550 controls the cooking equipment function providing unit 560, enabling the cooking equipment 1000 to perform cooking. Alternatively, in addition to cooking such as heating, the cooking function execution (F_COOK) may also include the function controller 550 controlling the operation of the interior light 570, the exterior light 580, and the ventilation fan 590.

[0099] The data assurance (F_DATA_COL) function generated during cooking execution is a function of the function controller 550 ensuring the various result values ​​or data related to the current state calculated by the elements of the function unit 500 during the execution of the cooking function (F_COOK).

[0100] F_ELE_MONITORING is the function of the function controller 550 to monitor the components of the function unit 500. The function controller 550 can monitor whether each element is operating normally, or monitor whether the action is performed as instructed, even if the function was previously instructed to be executed.

[0101] The communication (F_COM) function with the OS controller indicates that the function controller 550 provides the OS controller 200 with data obtained from F_DATA_COL, F_ELE_MONITORING, etc.

[0102] The OS controller monitoring (F_OS_MONITORING) function is a function in which the function controller 550 sends a specified packet to the OS controller 200 to confirm whether the OS controller 200 is operating normally.

[0103] The F_COM and F_OS_MONITORING functions can also be implemented as a single function. That is, even when the cooking function is not being performed, the function controller 550 will still transmit the data obtained through F_ELE_MONITORING to the OS controller 200. The function controller 550 can determine whether the OS controller 200 is in a normal or abnormal state based on whether the OS controller 200 has sent an ACK (Acknowledge) response to the transmitted data.

[0104] The functions performed by the OS controller 200 include a human-machine interface (HUMAN_IF). Additionally, the functions performed by the OS controller 200 include function controller control and monitoring (COOK_CONT_MON). Furthermore, the functions performed by the OS controller 200 include O_eLE_MONITORING. In one embodiment of function controller control, the OS controller 200 transmits a specified signal to the function controller 550, enabling the function controller 550 to control the functional unit 500, i.e., the main body 1010.

[0105] The Human-Machine Interface (HUMAN_IF) function is the function of the OS controller 200 to output various information or user interface such as menus required to control cooking equipment and to receive touch input from the user for the interface.

[0106] In one embodiment of the function controller control and monitoring (COOK_CONT_MON), the OS controller 200 provides signals to the function controller 550, which in turn controls the operation of the functional unit 500, i.e., the main body 110. In another embodiment, the function controller 550 collects specified information, such as information needed to monitor the state or operational status of the functional unit 500, i.e., the main body 110, and transmits this information to the OS controller 200 in the form of specified wired or wireless signals.

[0107] A more detailed explanation follows. When a user selects a specific cooking function in the Human-Machine Interface (HUMAN_IF) function, the OS controller 200 can command the function controller 550 to execute the cooking function.

[0108] Additionally, the OS controller 200 can monitor the values ​​received from the function controller 550 regarding the operational status or cooking results of the elements constituting the functional unit 500. This function falls under the category of function controller control and monitoring (COOK_CONT_MON). Therefore, the function controller control and monitoring (COOK_CONT_MON) of the OS controller 200 is related to the five functions of the function controller 550.

[0109] O_ELE_MONITORING is a function of the OS controller 200 to monitor the components of the digital controller gate 100. The OS controller 200 can monitor whether each component is operating normally, or whether it has acted as instructed, even if a function was previously instructed to be executed.

[0110] like Figure 3 As shown, although the function controller 550 and the OS controller 200 operate independently, they execute the given functions closely together. Therefore, the function controller 550 and the OS controller 200 confirm each other's operational status or whether they are functioning correctly during the execution of the function. When one component malfunctions, the corresponding component can respond to that malfunction.

[0111] The following describes the general appearance and structure of the cooking apparatus of the present invention, including the digital controller door 100. This is one embodiment of the present invention, and the opening method or direction of the digital controller door 100 can be implemented in various ways.

[0112] This invention relates to a technique for controlling a cooking appliance by configuring a digital controller door on the front of the appliance.

[0113] In this invention, the door of the microwave oven, which is located above an oven or gas stove, is composed of an LCD screen (an embodiment of a display unit). The Android system of the LCD screen (an embodiment of an OS controller) and the Micom of the microwave oven (an embodiment of a function controller) are configured to cooperate with each other, so that the LCD components can operate or control specific functions according to the operation of various microwave ovens / external environments.

[0114] The digital controller door of the present invention can be combined with a cooking device to open and close the interior of the cooking device. Although one embodiment of the cooking device of the present invention is a microwave oven, the present invention is not limited thereto. The cooking device of the present invention including a digital controller door includes the following embodiments, including various cooking devices that include a door equipped with a display such as an LCD that provides various user interfaces like a touch screen, and are capable of accommodating and cooking food inside.

[0115] A display unit can be installed on the front of the digital controller door of the cooking equipment according to the present invention to provide various information to the user. The user can know the cooking status of the food through the display unit.

[0116] Furthermore, when the display unit is connected to other home appliances and functions as a hub for them, information beyond food preparation can be obtained through the display unit. Additionally, cooking instructions and various other commands can be input on the display unit via touch.

[0117] Figure 4 This is a perspective view of a cooking apparatus according to an embodiment of the present invention. Figure 5 It means in Figure 4 A diagram showing the open state of the digital controller door 100.

[0118] According to one embodiment of the present invention, Figure 2 The sensor unit 140 is implemented by an illuminance sensor 1410 and an infrared sensor 1420. The illuminance sensor 1410, located next to the camera unit 110a, senses the light in the space where the cooking equipment 1000 is located, for example, sensing the illuminance in a kitchen. The infrared sensor 1420, located next to the illuminance sensor 1420, senses people near the cooking equipment 1000.

[0119] In another embodiment of the present invention, the sensor unit 140 may be configured in other areas of the digital controller gate 100.

[0120] The cooking device in this embodiment can be positioned above a heating cooking device, such as a heated oven or a gas stove, and spaced apart from the heating cooking device in the vertical direction.

[0121] With this configuration of cooking equipment, users can conveniently use the cooking apparatus, including the cooking device itself. Furthermore, the cooking device can function as a range hood for the heating cooking apparatus located below. In this case, the cooking device may have components designed to function as a range hood.

[0122] The cooking device can cook food using microwaves, which are a type of electromagnetic wave, and / or heater heat. The cooking device may include a main body 1010 with a cavity 1011 and a digital controller door 100 for opening and closing the cavity 1011. The main body 1010 is as described above. Figure 2 One embodiment of the functional unit 500. According to an embodiment, in this specification, the body 1010 can constitute the invention in the same way as the functional unit 500. Alternatively, according to an embodiment, in this specification, the constituent elements of the functional unit 500 can be implemented in the body 1010. Therefore, in various embodiments, the functional unit 500 and the body 1010 can refer to the same object.

[0123] Cooked food can be placed in cavity 1011. Digital controller door 100 can be configured in front of cavity 1011 and can be opened and closed by means of rotatable mounting to body 1010.

[0124] A vent 1013 may be provided on the upper part of the main body 1010 for discharging air drawn in from the suction unit located at the lower part of the main body 1010. A suction unit may be provided at the lower part of the main body 1010 of the cooking device. Thus, the cooking device functions as a range hood, drawing in air discharged from the heating and cooking device located below it and discharging it outdoors.

[0125] The main body 1010 may also include a front panel 1012, which is disposed at the entrance edge of the cavity 1011 and configured such that when the digital controller door 100 is closed, one side of the front panel 1012 faces the side of the choke member to block the cavity 1011.

[0126] The front panel 1012 can be configured to surround the entrance edge of the cavity 1011 and has a defined width and protrudes. Therefore, if the digital controller door 100 is closed, the edge portion of the digital controller door 100 and the cavity 111 can overlap each other.

[0127] With this structure, the front panel 1012 seals the cavity 1011 when the digital controller door 100 is closed, thereby preventing oil, moisture, oil vapor and other substances generated during the cooking of food placed in the cavity 1011 from flowing out through the inlet of the cavity 1011.

[0128] exist Figure 4In the structure, the speaker 1310 and microphone 1320, which are components of the speaker / microphone section 130, can be disposed at the lower end of the digital controller gate 100. However, the present invention is not limited to this specific position, and the speaker 1310 and microphone 1320 can be disposed in various areas of the digital controller gate 100.

[0129] In addition, the speaker 1310 and the microphone section 1320 can be composed of more than one.

[0130] Figure 6 This is a perspective view of the digital controller door of a cooking device according to an embodiment of the present invention.

[0131] The digital controller door 100 may include controller hardware (e.g., a hardware chip) or controller software (including program software), which runs a prescribed algorithm and performs the next operation based on the sensing results of various sensors configured on the cooking equipment or door, or the operating state of the cooking equipment, etc.

[0132] exist Figures 4 to 6 In the diagram, 121 is a through-hole for air inflow or outflow. A first camera 110a and a sensor 140 can be configured on the front of the digital controller door 100. The sensor 140 includes a human body sensor, an illumination sensor, etc.

[0133] The display unit 160 is used to control the cooking appliance 1000 or to display the operation process within the cooking appliance 1000. The vent 1013 may have an intake portion at the lower part of the main body 1010 and an exhaust portion at the upper part of the main body 1010. A handle 122 is provided on one side of the digital controller door 100, allowing the digital controller door 100 to be opened and closed.

[0134] A second camera 110b can be configured inside the digital controller door 100. The second camera 110b captures images of the inside of the cavity 1011, allowing the cooking status to be confirmed.

[0135] Figure 7 This is a schematic diagram showing the location of a cooking apparatus according to an embodiment of the present invention. Figure 7 In the diagram, solid arrows indicate airflow, while dashed arrows indicate the direction of heat transfer. The heating and cooking apparatus 2000 may include, for example, an oven and a cooktop positioned above the oven.

[0136] The cooking equipment may have a convection heating device 1031 and a microwave generator 1032 to heat food contained in the cavity 1011.

[0137] The convection heating device 1031 heats food by generating heat, while the microwave generator 1032 heats food by generating microwaves. The user can select and operate either the convection heating device 1031 or the microwave generator 1032 to heat and cook food.

[0138] The convection heating device 1031 may include a convection heater 1031a and a convection fan 1031b. The convection heater can heat the food contained in the cavity 1011 by generating heat. The convection fan 1031b can force the air heated by the convection heater 1031a to flow in the cavity 1011.

[0139] If the convection fan 1031b is activated, the heated air can circulate smoothly in the cavity 1011, thereby supplying heat evenly to the entire cavity 1011, so that the food contained in the cavity 1011 can be cooked evenly as a whole.

[0140] To prevent the display unit 160 located on the digital controller door 100 from overheating due to heated air rising from the heating cooking device located below the cooking equipment, which could cause malfunctions or damage, it is necessary to cool the display unit 160 and block external heat transfer to it. This function can be achieved by the door fan 180 and the ventilation fan 590.

[0141] The door fan 180 can be configured inside the digital controller door 100. The door fan 180 can effectively cool the display unit 160 by directing airflow toward the back of the display unit 160.

[0142] In addition, the airflow exhausted from the door fan 180 to the outside of the digital controller door 100 can block the hot air rising from the heating cooking device located at the bottom of the cooking equipment by forming an air curtain.

[0143] A ventilation fan 590 may be disposed on the upper part of the main body 1010 and in the flow path of the ventilation hole 1013. The ventilation fan 590 can exhaust air to the outside of the cooking device by causing the air rising from the heating cooking device to flow into the ventilation hole 1013.

[0144] Therefore, when the ventilation fan 590 operates, most of the heated air rising from the heating cooking device flows into the ventilation holes 1013 formed in the main body 1010, thereby relatively reducing the airflow to the display unit 160 of the digital controller door 100. Thus, the overheating of the display unit 160 can be suppressed by reducing the flow of heated air to the display unit 160 of the digital controller door 100.

[0145] To prevent the display unit 160 from overheating, it is necessary to use the door fan 180 and the ventilation fan 590 appropriately. One of the main purposes of the door fan 180 is to prevent the display unit 160 from overheating. Therefore, in order to deal with the temperature conditions of the air near the digital controller door 100, the door fan 180 can operate in a low-speed rotation mode and a high-speed rotation mode respectively.

[0146] In low-speed rotation mode, the air volume of the door fan 180 is small, while in high-speed rotation mode, the air volume of the door fan 180 is large. Therefore, by operating in low-speed rotation mode when the air temperature is low and operating in high-speed rotation mode when the air temperature is high, the temperature of the display unit 160 can be effectively reduced.

[0147] Simultaneously operating the door fan 180 and the ventilation fan 590, and operating the door fan 180 in a high-speed rotation mode, helps to reliably suppress overheating of the display unit 160.

[0148] The thermistor 595, located at the bottom of the cooking appliance 1000, can sense heat from the heating cooking appliance located at the bottom. It can also activate the automatic ventilation function based on the heat.

[0149] exist Figure 7 In one embodiment, the external light 580 may emit light downwards. For example, the external light 580 may be turned on when a user touches the digital controller door 100. Alternatively, the external light 580 may be turned on under the control of the OS controller 200 if human movement is detected and the ambient illuminance is below a specified reference (e.g., illuminance below 10 lux).

[0150] Additionally, a door light may be provided at the lower end of the digital controller door 100. For example, the door light may be turned on when a user touches the digital controller door 100. Alternatively, the door light may be turned on under the control of the OS controller 200 if human movement is detected and the ambient illuminance is below a specified reference (e.g., illuminance below 10 lux).

[0151] According to one embodiment of the present invention, the external light 580 can be controlled by the function controller 550. In this case, the OS controller 200 can instruct the function controller 550 to turn the external light 580 on / off.

[0152] According to another embodiment of the present invention, the external light 580 can be directly controlled by the OS controller 200. In this case, although the external light 580 is configured in the functional unit 500, it can be controlled by the OS controller 200 of the digital controller gate 100.

[0153] The digital controller door 100 can receive user commands via touch input on the display unit 160, thereby controlling the cooking appliance 1000. Alternatively, the digital controller door 100 can control the cooking appliance 1000 based on voice commands input via the microphone unit 1320. That is, the microphone unit 1320 receives the user's voice, and the speaker 1310 outputs a specified sound. Furthermore, the display unit 160 outputs an image. Thus, the digital controller door 100 provides a human-machine interface.

[0154] To improve the accuracy of voice recognition in the cooking appliance 1000, this manual aims to divide user-spoken messages that require device recognition into two categories to enhance the recognition rate. User-spoken messages are categorized into three types: wake-up words, command words, and virtual words. Voice commands are further divided into wake-up words and command words (natural language). The wake-up word notifies the device of the upcoming command word in natural language.

[0155] One embodiment of the wake word is the name of the device spoken to trigger natural language recognition. Subsequent spoken commands correspond to control instructions for the actual device. For example, this could be the device's category name ("oven," "stove"), the device's brand ("LG," "Dios"), an interjection, or a conversational word ("Hey," "Here").

[0156] Command words are used to instruct the actions of a device and can be configured differently depending on the type of device. As one example, command words can control the device to turn on / off or instruct the device to perform specific functions. This can vary depending on the specific device.

[0157] Therefore, when the user says "Dios, stop cooking", if the device recognizes "Dios" as a wake word, the command word recognition mode (command word input mode) is triggered. After the OS controller 200 confirms "stop cooking" as the user's voice input, it instructs the functional unit 550 of the cooking device 1000 to stop cooking.

[0158] Figure 8 This diagram illustrates the process by which a cooking device according to an embodiment of the present invention recognizes wake words and command words.

[0159] Figure 8The process of OS controller 200 controlling digital controller gate 100 is illustrated, wherein when microphone unit 1320 receives a predetermined wake-up word, OS controller 200 executes a command word recognition mode to receive the command word for a preset time period. According to embodiments of the present invention, a controller providing general control functions (e.g., a controller configured in a digital controller gate or a controller configured in a functional unit) can execute the above-described command word recognition mode. OS controllers and / or functional controllers are embodiments of controllers.

[0160] If the microphone unit 1320 receives voice and generates voice data (S1), the OS controller 200 confirms whether the input voice data is equivalent to a wake-up word (S2). If the input voice is equivalent to a wake-up word, the OS controller 200 starts the command recognition mode in order to recognize subsequent command words and starts a timer (S3).

[0161] The command word recognition mode includes a mode in which the OS controller 200 controls specific functions of the cooking appliance 1000 to improve the accuracy of command word input. The timer runs for the duration of maintaining the command word recognition mode. This time can be preset or adjusted according to the user's voice input habits.

[0162] Furthermore, the OS controller 200 waits for voice input until the timer expires (S4). If no voice input is received before the timer expires, the OS controller 200 terminates the command word recognition mode (S8).

[0163] On the other hand, if voice is input before the timer expires in S4, the microphone unit 1320 generates voice data from the input voice (S5). Then, the OS controller 200 confirms whether the voice data corresponds to a command word (S6). If the confirmation result is a command word, the OS controller 200 executes the command word (S7). Afterwards, the OS controller 200 ends the command word recognition mode (S8).

[0164] When the cooking appliance 1000 performs a specific function that generates sound or when the digital controller gate 100 outputs sound, the microphone unit 1320 may contain noise during the process of receiving speech. This noise can reduce the accuracy of speech recognition when the OS controller 200 recognizes the input speech.

[0165] Therefore, after the wake word is entered, the OS controller 200 can perform control to interrupt the sound emitted by the cooking device 1000 or reduce the volume of the sound during a specified period of time (e.g., the time during which the timer runs, a short period of time).

[0166] For example, if the command word recognition mode is entered, the OS controller 200 can reduce the noise by temporarily reducing the rotational speed of the ventilation fan 590 (e.g., a range hood fan) or the door fan 180, or by reducing the operating level (action level).

[0167] Alternatively, if the command word recognition mode is entered, the OS controller 200 can reduce the volume of the sound generated by the digital controller gate 100. This corresponds to the case where the speaker 1310 of the digital controller gate 100 outputs a specified sound.

[0168] As described above, the command word recognition mode, which is used to improve the recognition performance of command words after the wake word is input, is preset for a certain period of time. If no additional command word is input within the preset time, the OS controller 200 ends the command word recognition mode and restores the specific functions of the cooking device 1000 controlled in the aforementioned command word recognition mode to their original state.

[0169] As the command word recognition mode ends, the volume of the sound output by the speaker 1310, the operating level of the door fan 180, the operating level of the ventilation fan 590, etc., can be restored to the state before the command word recognition mode started.

[0170] Figure 9 This diagram illustrates the process of controlling the operation of a ventilation fan or door fan in a command word recognition mode according to an embodiment of the present invention.

[0171] In command word recognition mode, the OS controller 200 can adjust the volume of the sound output by the speaker 1310, or adjust the operating level of the ventilation fan 590 included in the functional unit 500 or the door fan 180 included in the digital controller door 100, so that the command word is accurately input after the wake word.

[0172] OS controller 200 initiates command word recognition mode (S11). Then, to improve speech recognition performance, it checks whether the volume of the sound (music, guiding phrase, etc.) output by speaker 1310 is higher than the reference volume (VOC_VOL) (S12). The reference volume (VOC_VOL) can be preset. Alternatively, OS controller 200 can set the reference volume (VOC_VOL) to a new value as the number of speech recognitions accumulates.

[0173] If the volume of the sound output by speaker 1310 in S12 is greater than the reference volume (VOC_VOL) (S12-Yes), then OS controller 200 adjusts the volume of speaker 1310 to below the reference volume (VOC_VOL) (S13). If the result of S12 is no, then OS controller 200 executes step S14.

[0174] Next, to improve voice recognition performance, the OS controller 200 confirms whether the current operating level of the door fan 180 is higher than the baseline door fan level (VOC_DOOR_LEVEL) (S14). The baseline door fan level (VOC_DOOR_LEVEL) can be preset. Alternatively, the OS controller 200 can set the baseline door fan level (VOC_DOOR_LEVEL) with a new value as the number of voice recognitions accumulates.

[0175] If the current operating level of door fan 180 is higher than the reference door fan level (VOC_DOOR_LEVEL) in S14 (S14-Yes), then the OS controller 200 adjusts the operating level of door fan 180 to below the reference door fan level (VOC_DOOR_LEVEL) (S15). If the result of S14 is no, the OS controller 200 executes step S16.

[0176] Next, to improve voice recognition performance, the OS controller 200 confirms whether the current operating level of the ventilation fan 590 is higher than the baseline ventilation fan level (VOC_VENT_LEVEL) (S16). The baseline ventilation fan level (VOC_VENT_LEVEL) can be preset. Alternatively, the OS controller 200 can set the baseline ventilation fan level (VOC_VENT_LEVEL) with a new value as the number of voice recognitions accumulates.

[0177] If the current operating level of the ventilation fan 590 is higher than the reference ventilation fan level (VOC_VENT_LEVEL) in S16 (S16-Yes), then the OS controller 200 adjusts the operating level of the ventilation fan 590 to below the reference ventilation fan level (VOC_VENT_LEVEL) (S17).

[0178] exist Figure 9 In this embodiment, the speaker 1310, door fan 180, and ventilation fan 590 can be controlled individually.

[0179] As an embodiment of the present invention, the OS controller 200 may execute only S16 and S17 after starting the command word recognition mode (S11), without executing processes S12 to S15. In this case, the OS controller 200 may adjust only the operating level of the ventilation fan 590 included in the functional unit 500 in the command word recognition mode. For this, refer to... Figure 15 A detailed explanation will be provided.

[0180] Furthermore, as another embodiment of the present invention, the OS controller 200 may execute only S14 and S15 after starting the command word recognition mode (S11), without executing processes S12 to S13, and without executing processes S16 to S17. In this case, the OS controller 200 may adjust only the operating level of the door fan 180 included in the digital controller door 100 in the command word recognition mode. For this, refer to... Figure 16 A detailed explanation will be provided.

[0181] exist Figure 9 The document describes an embodiment that alters the operating levels of the speaker 1310, door fan 180, and ventilation fan 590 related to sound during the execution of a command word recognition mode. However, the accuracy of the microphone unit 1320 in receiving speech can vary depending on the user's command word pronunciation habits. Therefore, the OS controller 200 can store the speech characteristics (voice volume, frequency band, etc.) of wake-up words or command words.

[0182] Therefore, if a wake word or command word is input, the OS controller 200 can temporarily store voice data containing the wake word or command word, and extract and store the size or frequency band of the voice from the voice data.

[0183] In addition, the OS controller 200 stores the number of times or conditions that occur during command word recognition after the input wake word (such as the function the cooking device is performing when a command word recognition error occurs). After storing this information, the OS controller 200 can change the reference value during the execution of the command word recognition mode.

[0184] Figure 10 This diagram illustrates the process by which the OS controller adjusts the reference volume in the command word recognition mode according to an embodiment of the present invention. Figure 10 In this context, the OS controller 200 reduces the reference volume (VOC_VOL) based on the size and frequency band of the voice data containing the wake word or command word, thereby improving the command word recognition performance in the command word recognition mode.

[0185] If in Figure 8 If a wake-up word or a command word is entered during S1 or S2, the OS controller 200 confirms the size and frequency band of the voice data containing the wake-up word or command word (S21).

[0186] If the size of the voice data is smaller than the reference, the OS controller 200 reduces the reference volume (VOC_VOL) (S22).

[0187] In addition, if the frequency band of the voice data is determined to be overlapping with other sounds and is difficult to confirm, the OS controller 200 reduces the reference volume (VOC_VOL) (S23).

[0188] As a result, the reference volume (VOC_VOL) can be adjusted to suit command word recognition in accordance with specific speech data.

[0189] Afterwards, the OS controller 200 can store the history of decreasing the reference volume (VOC_VOL) in S22 / S23, and then evaluate the accuracy of the operation results of S22 / S23 by monitoring the size and frequency band of the voice data (S24).

[0190] If the result of speech recognition for the size or frequency band of subsequent input speech data is to restore to... Figure 10 If the reference volume (VOC_VOL) is suitable before the adjustment operation, the OS controller 200 can restore the reference volume (VOC_VOL) value to the initially set value.

[0191] Figure 10 The process can be executed periodically. Alternatively, if the size or frequency band of the previously stored wake-word voice data or command word voice data changes, the OS controller 200 can reset the reference volume (VOC_VOL) before execution. Figure 10 The process.

[0192] Figure 11 This diagram illustrates the process by which the OS controller adjusts the reference door fan level in the command word recognition mode according to an embodiment of the present invention. Figure 11 In this context, the OS controller 200 reduces the baseline door fan level (VOC_DOOR_LEVEL) based on the size and frequency band of the voice data containing wake words or command words, thereby improving the recognition performance of command words in the command word recognition mode.

[0193] If in Figure 8 If a wake-up word or a command word is entered during S1 or S2, the OS controller 200 confirms the size and frequency band of the voice data containing the wake-up word or command word (S31).

[0194] If the size of the voice data is less than the specified baseline, the OS controller 200 lowers the baseline door fan level (VOC_DOOR_LEVEL) (S32).

[0195] Additionally, if the frequency band determined to be voice data overlaps with other sounds and is difficult to confirm, the OS controller 200 lowers the reference door fan level (VOC_DOOR_LEVEL) (S33).

[0196] As a result, the baseline door fan level (VOC_DOOR_LEVEL) can be adjusted to suit command word recognition in correspondence with specific speech data.

[0197] Subsequently, the OS controller 200 can store the history of the reduced baseline door fan level (VOC_DOOR_LEVEL) in S32 / S33, and then evaluate the accuracy of the operation results of S32 / S33 by monitoring the size and frequency band of the voice data (S34).

[0198] If the result of speech recognition for the size or frequency band of subsequent input speech data is to restore it to... Figure 11 If the baseline door fan level (VOC_DOOR_LEVEL) is suitable before the adjustment operation, the OS controller 200 can restore the value of the baseline door fan level (VOC_DOOR_LEVEL) to the initially set value.

[0199] Figure 11 The process can be executed periodically. Alternatively, if the size or frequency band of previously stored wake-word voice data or command word voice data changes, the OS controller 200 can reset the baseline door fan level (VOC_DOOR_LEVEL) before execution. Figure 11 The process.

[0200] Figure 12 This diagram illustrates the process by which the OS controller adjusts the baseline ventilation fan level in a command word recognition mode according to an embodiment of the present invention. Figure 12 In this context, the OS controller 200 reduces the baseline ventilation fan level (VOC_VENT_LEVEL) based on the size and frequency band of the voice data containing the wake word or command word, thereby improving the command word recognition performance in the command word recognition mode.

[0201] If in Figure 8 If a wake-up word or a command word is entered during S1 or S2, the OS controller 200 confirms the size and frequency band of the voice data containing the wake-up word or command word (S41).

[0202] If the size of the voice data is less than the specified baseline, the OS controller 200 reduces the baseline ventilation fan level (VOC_VENT_LEVEL) (S42).

[0203] Additionally, if the frequency band of the voice data is determined to be overlapping with other sounds and is difficult to confirm, the OS controller 200 lowers the baseline ventilation fan level (VOC_VENT_LEVEL) (S43).

[0204] As a result, the baseline ventilation fan level (VOC_VENT_LEVEL) can be adjusted to suit command word recognition in correspondence with specific speech data.

[0205] Subsequently, the OS controller 200 can store the history of the reduced baseline ventilation fan level (VOC_VENT_LEVEL) in S42 / S43, and then evaluate the accuracy of the operation results of S42 / S43 by monitoring the size and frequency band of the voice data (S44).

[0206] If the result of speech recognition for the size or frequency band of subsequent input speech data is to restore it to... Figure 12 If the baseline ventilation fan level (VOC_VENT_LEVEL) is suitable before the adjustment operation, the OS controller 200 can restore the value of the baseline ventilation fan level (VOC_VENT_LEVEL) to the originally set value.

[0207] Figure 12 The process can be executed periodically. Alternatively, if the size or frequency band of previously stored wake-word or command-word voice data changes, the OS controller 200 can reset the baseline ventilation fan level (VOC_VENT_LEVEL) before executing the process. Figure 12 The process.

[0208] In this specification, the door fan 180 or the ventilation fan 590 may have a specified operating level.

[0209] The OS controller 200 can determine the operating level of the door fan 180 and set and control the operation of the door fan 180 according to the determined operating level. The operating level represents the level of cooling force provided by the door fan 180. The operating level can increase or decrease linearly or in stages.

[0210] In embodiments where the operation level increases or decreases linearly, the OS controller 200 can linearly change the rotational speed of the door fan 180 or linearly change the magnitude of the voltage or current applied to the door fan 180.

[0211] In embodiments where the operating level is increased or decreased in stages, the OS controller 200 can set the rotational speed of the door fan 180 to a specific value or set the magnitude of the voltage or current applied to the door fan 180 to a specific value.

[0212] In an embodiment where the operation level is increased or decreased in stages, the operation level can consist of two or more stages, such as 0 (off), 1 (low), and 2 (high). The stages can vary.

[0213] An embodiment of setting the operating level based on the rotational speed of the door fan 180 will be described. The rotational speed can be set in rpm (rotation per minute) or in specific stages (low, medium, high, off). In the case of two or more door fans 180, one embodiment may set the operating level based on the number of door fans 180 to be activated. Alternatively, the operating level may include, selectively, the aforementioned elements.

[0214] The operating level of the door fan 180 can be determined and set in various ways.

[0215] First, the door fan 180 has two operating modes: On and Off.

[0216] Next, the operating levels of the door fan 180 can include three or more levels, such as the first level, the second level, and the third level.

[0217] In this case, the first level corresponds to the off state or the level that provides the lowest cooling force. The second level corresponds to the on state and provides a greater cooling force than the first level. The third level corresponds to the on state and provides a greater cooling force than the second level.

[0218] According to one embodiment of the present invention, when the rotational speed of the door fan 180 is set to a first level, a second level, and a third level, the rotational speed of the door fan 180 at the first level is less than the rotational speed of the door fan 180 at the second level. Furthermore, the rotational speed of the door fan 180 at the second level is less than the rotational speed of the door fan 180 at the third level. Here, the rotational speed of the door fan 180 at the first level can be 0.

[0219] In another embodiment of the present invention, when the voltage applied to the door fan 180 is set to a first level, a second level, and a third level, the voltage applied to the door fan 180 at the first level is less than the voltage applied to the door fan 180 at the second level. Furthermore, the voltage applied to the door fan 180 at the second level is less than the voltage applied to the door fan 180 at the third level. Here, the voltage applied to the door fan 180 at the first level can be 0.

[0220] In another embodiment of the present invention, when the magnitude of the current applied to the door fan 180 is set to a first level, a second level, and a third level, the magnitude of the current applied to the door fan 180 at the first level is less than the magnitude of the current applied to the door fan 180 at the second level. Furthermore, the magnitude of the current applied to the door fan 180 at the second level is less than the magnitude of the current applied to the door fan 180 at the third level. Here, the magnitude of the current applied to the door fan 180 at the first level can be 0.

[0221] Similarly, the OS controller 200 or functional unit 550 can determine the operating level of the ventilation fan 590 and set and control the operation of the ventilation fan 590 according to the determined operating level. The operating level represents the level of cooling force, air exchange capacity, or suction force provided by the ventilation fan 590. The operating level can increase or decrease linearly, or it can increase or decrease in stages.

[0222] In embodiments where the operating level increases or decreases linearly, the OS controller 200 or functional unit 550 can linearly change the rotational speed of the ventilation fan 590 or linearly change the magnitude of the voltage or current applied to the ventilation fan 590.

[0223] In embodiments where the operating level is increased or decreased in stages, the OS controller 200 or functional unit 550 can set the rotational speed of the ventilation fan 590 to a specific value or set the magnitude of the voltage or current applied to the ventilation fan 590 to a specific value.

[0224] In an embodiment where the operation level is increased or decreased in stages, the operation level can consist of two or more stages, such as 0 (off), 1 (low), and 2 (high). The stages can vary.

[0225] An embodiment of setting the operating level based on the rotational speed of the ventilation fan 590 will be described. The rotational speed can be set in rpm (rotation per minute) or in specific stages (low, medium, high, off). In the case of two or more ventilation fans 590, one embodiment can set the operating level based on the number of ventilation fans 590 to be activated. Alternatively, the operating level may include selectively including or adjusting the aforementioned aspects.

[0226] The operating level of the ventilation fan 590 can be determined and set in various ways.

[0227] First, the ventilation fan 590 has two operating modes: On and Off.

[0228] Next, the operating levels of the ventilation fan 590 may include three or more levels, such as the first level, the second level, and the third level.

[0229] In this case, the first level corresponds to the off state or provides the lowest cooling force, lowest ventilation capacity, or lowest suction power. The second level corresponds to the on state and provides a higher level of cooling force, ventilation capacity, or suction power than the first level. The third level corresponds to the on state and provides a higher level of cooling force, ventilation capacity, or suction power than the second level.

[0230] According to one embodiment of the present invention, when the rotational speed of the ventilation fan 590 is set to a first level, a second level, and a third level, the rotational speed of the first-level ventilation fan 590 is less than the rotational speed of the second-level ventilation fan 590. Furthermore, the rotational speed of the second-level ventilation fan 590 is less than the rotational speed of the third-level ventilation fan 590. Here, the rotational speed of the first-level ventilation fan 590 can be 0.

[0231] In another embodiment of the invention, when the voltage applied to the ventilation fan 590 is set to a first level, a second level, and a third level, the voltage applied to the ventilation fan 590 at the first level is less than the voltage applied to the ventilation fan 590 at the second level. Furthermore, the voltage applied to the ventilation fan 590 at the second level is less than the voltage applied to the ventilation fan 590 at the third level. Here, the voltage applied to the ventilation fan 590 at the first level can be 0.

[0232] In another embodiment of the present invention, when the magnitude of the current applied to the ventilation fan 590 is set to a first level, a second level, and a third level, the magnitude of the current applied to the ventilation fan 590 at the first level is less than the magnitude of the current applied to the ventilation fan 590 at the second level. Furthermore, the magnitude of the current applied to the ventilation fan 590 at the second level is less than the magnitude of the current applied to the ventilation fan 590 at the third level. Here, the magnitude of the current applied to the ventilation fan 590 at the first level can be 0.

[0233] exist Figures 10 to 12 In this context, "difficult-to-identify frequency bands" refers to frequency bands where the frequency of the voice data is lower than the typical minimum value or higher than the typical maximum value of the voice data frequency band. The range for this can be preset.

[0234] Figure 13 This diagram illustrates the process by which the OS controller of an embodiment of the present invention executes a command word recognition enhancement mode in response to repeated input of a wake word.

[0235] The cooking device 1000 can produce a specified sound. Therefore, as mentioned above, the accuracy of recognizing user voice commands can be improved by executing a command word recognition mode. However, if the accuracy of voice recognition still decreases despite executing the command word recognition mode, the OS controller can execute a command word recognition enhancement mode.

[0236] That is, if no command word is recognized within a preset time, and a wake word is received within a preset time, the OS controller 200 can execute the command word recognition enhancement mode. This will be explained in detail below.

[0237] like Figure 8 As shown, after confirming that the input voice is a wake-up word, the OS controller 200 starts the command word recognition mode and starts a timer (S51). However, if no command word is recognized before the timer expires, the OS controller 200 ends the command word recognition mode (S52). Here, the states in which no command word is recognized include: i) the state in which the microphone unit 1320 does not receive voice; or ii) the state in which the microphone unit 1320 receives voice but the voice recognition result is not a command word.

[0238] This includes situations where the user says the wake word but no command word is entered, or an incorrect command word is entered, or where the user enters a command word but it is not correctly recognized. If the user says the command word but it is not recognized, the user can try saying the wake word again to attempt the voice command.

[0239] Therefore, if the voice input within N seconds (a preset time such as 2 seconds or 3 seconds) based on S51 is the wake word (S53), the OS controller 200 determines that the user is trying to repeatedly input the wake word.

[0240] Therefore, in order to address the situation where speech recognition does not proceed normally during the reception of command words, the OS controller 200 initiates a command word recognition enhancement mode and starts a timer (S54). The command word recognition enhancement mode is a mode that reduces noise even more than the command word recognition mode.

[0241] For example, in command word recognition enhancement mode, the OS controller 200 further reduces or sets the values ​​of the reference volume (VOC_VOL), reference door fan level (VOC_DOOR_LEVEL), and reference ventilation fan level (VOC_VENT_LEVEL) to 0.

[0242] After starting the command word recognition enhancement mode, the OS controller 200 waits for voice input until the timer expires (S55). If voice input is received, the microphone unit 1320 generates voice data from the input voice (S56). The OS controller 200 confirms whether the voice data is a command word (S57). If it is a command word, the OS controller 200 executes the command word (S58) and ends the command word recognition enhancement mode (S59).

[0243] As the command word recognition enhancement mode ends, the volume of the sound output by the speaker 1310, the operating level of the door fan 180, the operating level of the ventilation fan 590, etc., can be restored to the state before the command word recognition enhancement mode started.

[0244] On the other hand, if no voice is input in S55, or if the voice data input in S56 is not a command word, the OS controller ends the command word recognition enhancement mode (S59).

[0245] When repeatedly executing the command word recognition enhancement mode, the OS controller 200 can, as Figures 10 to 12 As described herein, the control levels of speaker 1310, door fan 180, and ventilation fan 590 are changed.

[0246] The noise generated by the cooking device 1000 in command word recognition mode is greater than the noise generated by the cooking device 1000 in command word recognition enhancement mode. That is, the state in which the cooking device 1000 generates less noise is command word recognition enhancement mode.

[0247] In the command word recognition enhancement mode, the OS controller 200 can set the volume of the speaker 1310 to 0 so that the speaker 1310 does not output sound.

[0248] Additionally, the OS controller 200 can turn off the door fan 180 or set the operating level to the lowest.

[0249] Additionally, the OS controller 200 can turn off the ventilation fan 590 or set its operating level to the lowest. On the other hand, when the ventilation fan 590 is in Auto Vent mode, the OS controller 200 can set the operating level of the ventilation fan 590 in different ways. For example, in Auto Vent mode, the ventilation fan 590 may be operating at the highest level. Therefore, in command word recognition mode, the OS controller 200 can control the operating level of the ventilation fan 590 to high or middle.

[0250] In addition, under automatic ventilation mode, the OS controller 200 can control the operating level of the ventilation fan 590 to either high or medium in the command word recognition enhancement mode, just as it would in command word recognition mode.

[0251] When the thermistor 595 senses a temperature, the ventilation fan 590 can operate automatically, which can be referred to as automatic ventilation. The function controller 550 can automatically activate the automatic ventilation function based on the temperature sensed by the thermistor 595, thereby preventing component failure or damage. That is, if the temperature sensed by the thermistor is above a specified temperature, the function controller 550 can activate automatic ventilation and notify the OS controller 200 of the automatic ventilation activation information.

[0252] The OS controller 200 can display the automatic ventilation operation status on the display unit 160 based on such notification.

[0253] When the specified temperature condition is reached, the OS controller 200 can display a pop-up message on the display unit 160 indicating that automatic ventilation is in operation. This is a function that the user cannot arbitrarily cancel or change. Therefore, the OS controller 200 can display information on the display unit 160 indicating that automatic ventilation is in operation and also output a message that the operation cannot be changed. Because of this, the user cannot set a timer, and even if the user turns off the cooking appliance 1000 on the display unit 160, the ventilation fan 590 will only stop when automatic ventilation ends.

[0254] Furthermore, if automatic ventilation is running when the timer is activated, the OS controller 200 can display the remaining time on the display unit 160 when the automatic ventilation operation ends. Also, if the automatic ventilation operation ends and the timer expires, the ventilation fan 590 will also turn off.

[0255] On the other hand, if the user sets the ventilation fan to 590 during cooking, it cannot be set to vortex level (high intensity). After cooking is finished, if the ventilation fan intensity was previously set to vortex level, it can operate at vortex level.

[0256] As described above, the automatic ventilation function is provided to protect the components of the cooking appliance 1000. Therefore, in the event of an error during the operation of the function controller 550 and the OS controller 200, the operation of other components of the function unit 500 can be canceled, but the operation of the ventilation fan 590 performing the automatic ventilation function can be maintained. Similarly, even in the absence of an instruction from the OS controller 200, the function controller 550 can automatically start or stop the operation of the ventilation fan 590 based on the temperature sensed by the thermistor 595.

[0257] On the other hand, the OS controller 200 of the present invention can display a message on the display unit 160 indicating that it is in command word recognition mode or command word recognition enhancement mode when the command word recognition mode is started or when the command word recognition enhancement mode is started.

[0258] In addition, if the situation of not recognizing the command word repeatedly occurs within a specified period after the wake word is entered, the OS controller 200 can display the state of not recognizing the command word after the wake word is recognized on the display unit 160, so as to guide the user to accurately say the command word.

[0259] Figure 14 This diagram illustrates the process of voice recognition performed by a cooking appliance including a digital controller door, according to another embodiment of the present invention. The ventilation fan 590, which is implemented as a range hood fan, can operate at operating levels (or action levels, action stages, etc.) such as off / low / middle / high.

[0260] The microphone section 1320 of the digital controller gate 100 configured in the cooking appliance 1000 is in a state of waiting for the input of a wake-up word (S61). If the wake-up word is input (S62), the OS controller 200 of the digital controller gate 100 reduces the volume of the music being output through the speaker 1310 in order to receive the input of the command word (S63).

[0261] Furthermore, when the operation stage (operation level) of the ventilation fan 590 is in the high stage (S64), the OS controller 200 changes the operation stage of the ventilation fan 590 to the middle stage in order to receive the input of the command word (S65). For example, the OS controller 200 can improve the accuracy of command word recognition by adjusting the rotation speed (rpm) of the ventilation fan 590.

[0262] That is, in Figure 14In this embodiment, the OS controller 200 of the digital controller gate 100 can adjust the RPM of the ventilation fan during voice recognition. If a command word is received during the waiting period (S66) after a wake-up word (e.g., "Hi LG, ready to answer command"), the OS controller 200 processes the input command word (S69). Furthermore, if the music volume and / or the operation of the ventilation fan are changed while waiting for the command word input, the OS controller 200 restores the speaker volume and / or the operation of the ventilation fan 590 to their original state (S70).

[0263] In steps S67 and S68, the OS controller 200 waits for the input of a command word until the waiting time exceeds a baseline waiting time. If no command word input is received and the baseline waiting time has exceeded, the OS controller 200 executes step S70.

[0264] According to an embodiment of the present invention, in order to sense a command word when a voice command is input, the digital controller gate 100 can perform the following process. When a wake-up word is input during the operation of a microwave oven or ventilation fan, the digital controller gate 100 of the present invention can perform control to reduce the music volume and the rpm of the ventilation fan 590 in preparation for receiving the command word.

[0265] In addition, the digital controller gate 100 of the present invention restores the ventilation fan 590 to its original rpm after the command word is recognized. If no command word is received after waiting for a specified time after the wake word is recognized, it restores to its original state.

[0266] exist Figure 14 In this embodiment, the digital controller gate 100 can be executed only when the range hood fan operates in the "high" phase. Figure 14 The control shown changes from "High" to "Medium" upon detection of a wake word. On the other hand, with the baseline ventilation fan level at Medium, and... Figure 14 In the embodiments, when the ventilation fan 590 operates in the intermediate stage, even if a wake word is recognized, the rpm of the ventilation fan 590 can remain unchanged, but the present invention is not limited thereto.

[0267] The operation phases of the range hood fan or ventilation fan can consist of a first stage (low), a second stage (medium), a third stage (high), and a fourth stage (turbo). To prevent the command word input from being unreceived due to ambient noise during the input process, the OS controller 200 of the digital controller gate 100 can temporarily reduce the operation phase of the range hood fan or ventilation fan after the wake-up word is input, so as to accurately receive the command word.

[0268] According to another embodiment of the present invention, if the user speaks loudly or pronounces accurately, the OS controller 200 of the digital controller door 100 determines that there is no need to temporarily reduce the operating stage of the range hood fan or ventilation fan, and thus the operating stage of the range hood fan / ventilation fan may not be reduced.

[0269] According to another embodiment of the present invention, if the user speaks in a very low voice or mispronounces words, even if the operation phase of the range hood fan or ventilation fan is in the second phase, the OS controller 200 of the digital controller door 100 can temporarily reduce the operation phase of the range hood fan or ventilation fan to the first phase.

[0270] That is, the OS controller 200 of the digital controller gate 100 can temporarily change the operating stage of the range hood fan or ventilation fan according to various voice recognition environments. When the operating stage of the range hood fan or ventilation fan is set to more than 5, the digital controller gate can store information on the maximum operating stage of the fan for improving the accuracy of command word input, and use the stored information to temporarily reduce the operating rpm value of the fan when the wake word is input.

[0271] Figure 14 The embodiments can also be applied to processes for controlling door fan 180 during voice recognition.

[0272] Figure 15 This diagram illustrates the process of adjusting the operating level of a ventilation fan in a command word recognition mode according to an embodiment of the present invention. It shows an embodiment in which the OS controller 200 adjusts only the operating level of the ventilation fan 590 included in the functional unit 500 in the command word recognition mode.

[0273] Reference Figure 9 As explained, after starting the command word recognition mode (S11), in order to improve the performance of voice recognition, the OS controller 200 checks whether the current operating level of the ventilation fan 590 is higher than the baseline ventilation fan level (VOC_VENT_LEVEL) (S16). The baseline ventilation fan level (VOC_VENT_LEVEL) can be preset. Furthermore, as the number of voice recognition attempts accumulates, the OS controller 200 can set the baseline ventilation fan level (VOC_VENT_LEVEL) with a new value.

[0274] If the current operating level of the ventilation fan 590 is higher than the reference ventilation fan level (VOC_VENT_LEVEL) in S16 (S16-Yes), the OS controller 200 adjusts the operating level of the ventilation fan 590 to below the reference ventilation fan level (VOC_VENT_LEVEL) (S17). The process can end if the result of S16 is no.

[0275] Figure 16 This diagram illustrates the process of adjusting the operating level of a door fan in a command word recognition mode according to an embodiment of the present invention. Figure 16 An embodiment is shown in which, in command word recognition mode, the OS controller 200 adjusts only the operating level of the door fan 180 included in the digital controller door 100.

[0276] Reference Figure 9 As explained, after starting the command word recognition mode (S11), in order to improve the performance of voice recognition, the OS controller 200 confirms whether the current operating level of the door fan 180 is higher than the reference door fan level (VOC_DOOR_LEVEL) (S14). The reference door fan level (VOC_DOOR_LEVEL) can be preset. Alternatively, as the number of voice recognitions accumulates, the controller 200 can set the reference door fan level (VOC_DOOR_LEVEL) with a new value.

[0277] If the current operating level of door fan 180 is higher than the reference door fan level (VOC_DOOR_LEVEL) in S14 (S14-Yes), then the OS controller 200 adjusts the operating level of door fan 180 to below the reference door fan level (VOC_DOOR_LEVEL) (S15). The process can end if the result of S14 is no.

[0278] Additionally, when the command word recognition mode begins, the operation of the ventilation fan 590 or the operating level of the door fan 180 can be adjusted or left unchanged based on the importance of voice recognition. For example, in situations such as high temperatures during cooking or when a lot of smoke is generated, the operation of the ventilation fan 590 should be prioritized. Furthermore, when the temperature of the digital controller door 100 rises due to various factors, the door fan 180 must also operate.

[0279] In the case described above, the OS controller 200 can determine the operating level of the ventilation fan 590 or the door fan 180 by comparing it with the importance of voice recognition.

[0280] Figure 17 This is a diagram illustrating the process of controlling the operating level of a door fan / ventilation fan according to an embodiment of the present invention.

[0281] If the command word recognition mode is started (S11), the OS controller 200 confirms whether the operating level of the currently operating ventilation fan 590 or door fan 180 is adjustable (S71). In order to determine whether the operating level is adjustable, the OS controller 200 can determine whether the current state of the cooking equipment 1000 is overheating or producing smoke, or whether the digital controller door 100 is overheating, etc.

[0282] If smoke is generated or the area is overheated (e.g., the degree of boiling of food in the stove area, the degree of smoke generation), the ventilation fan 590 needs to be operated at its maximum level. Alternatively, the ventilation fan 590 can be operated at a lower level for a very short period of time.

[0283] Similarly, if the internal components of the digital controller door 100 are overheated, the operating level of the door fan 180 needs to be maintained at its maximum. Alternatively, the operating level of the door fan 180 can be reduced by one level for a very short period of time.

[0284] In response, the OS controller 200 obtains the adjustable level and time (adjustable time) of the ventilation fan 590 or the door fan 180 in step S71.

[0285] For example, the OS controller 200 can determine, based on the current cooking state of the cooking appliance 1000, to reduce the operating level of the ventilation fan 590 by one level for a specified period of time (e.g., 3 seconds).

[0286] Alternatively, the OS controller 200 can determine, based on the overheating state of the digital controller door 100, to reduce the operating level of the door fan 180 by two levels over a specified period of time (e.g., 5 seconds).

[0287] OS controller 200 controls the operating level of ventilation fan 590 or door fan 180 within a specified time according to the determined adjustable level and time (S72).

[0288] After the control period is completed, the OS controller 200 restores the operating level of the ventilation fan 590 or the door fan 180 to its previous state, enabling each fan to perform the corresponding action.

[0289] If the current cooking state of the cooking appliance 1000 or the overheating state of the digital controller door 100 prevents the ventilation fan 590 or door fan 180 from operating at their operating levels, the OS controller 200 can output a prompt message "Please speak loudly" via the speaker / microphone unit 130. Alternatively, it can display a prompt message such as "Please speak loudly because the fan operating level cannot be reduced" on the display unit 160.

[0290] OS controller 200 determines the adjustable level and time of ventilation fan 590 based on the operating status of functional unit 500, and adjusts the operating level of ventilation fan 590 according to the determined time.

[0291] OS controller 200 determines the adjustable level and time of ventilation fan 590 based on the operating state of functional unit 500 (overheating, smoke, high temperature, etc.), and adjusts the operating time of ventilation fan 590 according to the determined level.

[0292] The OS controller 200 determines the adjustable level and time of the door fan 180 based on the operating state of the digital controller door 100, and adjusts the operating level of the door fan 180 according to the determined time.

[0293] In addition, the OS controller 200 determines the adjustable level and time of the door fan 180 based on the operating state (overheating, high temperature, etc.) of the digital controller door 100, and adjusts the operating time of the door fan 180 according to the determined level.

[0294] Additionally, if the voice recognition time is prolonged when the operating level of the ventilation fan 590 or door fan 180 cannot be reduced (e.g., in conversations with chatbots or generative AI, video calls, etc.), the OS controller 200 can display the dialogue content as subtitles on the display unit 160.

[0295] The foregoing description outlines all the constituent elements that constitute the embodiments of the present invention, which are combined or operate in combination. However, the present invention is not necessarily limited to the above embodiments. Within the scope of the present invention, all constituent elements may also be selectively combined into one or more for operation. Furthermore, all the above-described constituent elements can be implemented by a single independent hardware component, or by a computer program having program modules in which some or all of the constituent elements are optionally combined and perform some or all of the combined functions in one or more hardware components. The code and code segments constituting the above-described computer program can be readily derived by those skilled in the art. The above-described computer program can be stored in a computer-readable storage medium and read and executed by a computer to implement the embodiments of the present invention. Storage media for the computer program include magnetic recording media, optical recording media, semiconductor recording elements, and other storage media. Additionally, the computer program implementing the embodiments of the present invention includes program modules that are transmitted in real time via an external device.

[0296] The above description focuses on embodiments of the present invention, but those skilled in the art can make various changes or modifications. Therefore, it should be understood that all such changes and modifications should be included within the scope of the present invention without departing from its scope.

Claims

1. A cooking device including a digital controller door, the cooking device comprising a functional unit providing cooking functions, wherein, The digital controller gate includes a microphone section for receiving the user's voice. If the microphone receives a wake-up word, the controller executes a command word recognition mode in order to receive command words within a preset time period.

2. The cooking apparatus including a digitally controlled door according to claim 1, wherein, In the command word recognition mode, the controller adjusts the operating level of the ventilation fan included in the functional unit.

3. The cooking apparatus including a digitally controlled door according to claim 2, wherein, The controller determines the adjustable level and time of the ventilation fan based on the operating state of the functional unit, and adjusts the operating level of the ventilation fan according to the determined time.

4. The cooking apparatus including a digitally controlled door according to claim 1, wherein, In the command word recognition mode, the controller adjusts the operating level of the door fan included in the digital controller door.

5. The cooking apparatus including a digitally controlled door according to claim 4, wherein, The controller determines the adjustable level and time of the door fan based on the operating state of the door by the digital controller, and adjusts the operating level of the door fan according to the determined time.

6. The cooking apparatus including a digitally controlled door according to claim 1, wherein, If no command word is recognized within a preset time, and a wake-up word is received within a preset time, the controller executes a command word recognition enhancement mode. The noise generated by the cooking device in the command word recognition mode is greater than the noise generated by the cooking device in the command word recognition enhancement mode.

7. A method for improving speech recognition performance, applied in a cooking device including a functional unit providing cooking functions, wherein, include: The steps for the microphone to receive the wake word; as well as The controller performs a command word recognition pattern step in order to receive command words within a preset time period.

8. The method for improving speech recognition performance according to claim 7, wherein, The step of executing the command word recognition pattern includes adjusting the operating level of the ventilation fan included in the functional unit.

9. The method for improving speech recognition performance according to claim 8, wherein, The adjustment steps include: The controller determines the adjustable level and time of the ventilation fan based on the operating state of the functional unit, and adjusts the operating level of the ventilation fan according to the determined time.

10. The method for improving speech recognition performance according to claim 7, wherein, Also includes: If no command word is recognized within a pre-set first time period, and a wake-up word is received within a pre-set second time period, the controller executes the command word recognition enhancement mode steps. The noise generated by the cooking device in the command word recognition mode is greater than the noise generated by the cooking device in the command word recognition enhancement mode.

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