Display system control apparatus and control method thereof

Abstract

The invention discloses a display system control apparatus and a control method thereof. In more detail, the apparatus includes: a storage unit that stores at least one of a reference color coordinate value for each control mode or a reference brightness value for each control mode, a display color coordinate value, and a display brightness value; and a control unit that controls the display system on the basis of the received control mode and the information stored in the storage unit, in which the control unit corrects the display color coordinate value on the basis of the reference color coordinate value for each control mode, corrects the display brightness value on the basis of the reference brightness value for each control mode, and controls the display system on the basis of the information stored in the storage unit. Or the display color coordinate value and the display brightness value are respectively corrected based on the reference color coordinate value of each control mode and the reference brightness value of each control mode.

Description

Technical Field

[0001] The present disclosure relates to a display system control device and a control method thereof. Background Art

[0002] The display system of the vehicle can be mainly installed on the dashboard, central console, entertainment system, etc. of the vehicle, and visually transmit information to the driver and passengers in the vehicle. For example, the driving information display system can provide driving related information such as the speed, revolutions per minute (RPM), fuel level, mileage, etc. of the vehicle. The display can usually be installed on the dashboard, can be configured as a digital display panel, or can be provided as a combined analog and digital display. In recent years, electronic dashboards have been used more and more, and virtual or customized display shapes can be selected in some cases. In addition, the display system on the central console can be mainly connected to the infotainment system of the vehicle. The display can provide a navigation system, multimedia playback, communication functions, etc. Many vehicles can use a touch screen interface to allow users to easily access and control functions. In addition, in some vehicles, voice recognition functions can allow drivers to perform tasks, such as entering a destination or connecting a mobile phone. In addition, with the beginning of the era of electric vehicles and autonomous driving, display systems can have larger and larger sizes and higher resolutions, and continue to evolve to provide more convenient and useful information to drivers and passengers.

[0003] In addition to the above functions, the co-pilot display, which is also a type of display, can also allow passengers to check and interact with information in addition to the driver. The display can be mainly installed on the center console or in front of the co-pilot seat, and can provide various functions such as entertainment, navigation, communication, etc., which have recently attracted much attention in the market.

[0004] At the same time, as displays become larger and more diverse, the displays within the driver's field of view can also become wider and more numerous. In addition, since image noise may appear in the front passenger seat display image, the front passenger seat display image may interfere with the driver's driving while driving. Therefore, it may be important to reduce the frequency of image noise that appears in the driver's field of view during driving. Recently, there has been an increasing demand from major original equipment (OE) for displays with viewing angle control technology, which may limit the viewing of multimedia images to the driver's direction of the front passenger display. In addition, in addition to the driver's seat direction, side window reflections may also be limited because such reflections may interfere with vehicle driving. Summary of the invention

[0005] An embodiment of the present disclosure is intended to provide a display system control device and a control method thereof, wherein the display system control device is capable of compensating for changes in brightness and color coordinates when one of multiple control modes is changed to another control mode in a display system including a viewing angle control mode, wherein the viewing angle control mode can limit the driver's viewing of images of each display type.

[0006] In one general aspect, a display system control device may include: a storage unit storing information including a reference color coordinate value of each control mode of a plurality of control modes of the display device and at least one of a reference brightness value of each control mode, a display color coordinate value, and a display brightness value; and a control unit configured to control the display system based on a received control mode among the plurality of control modes and the information stored in the storage unit. Based on the received control mode, the control unit is further configured to correct the display color coordinate value based on the reference color coordinate value of each control mode, correct the display brightness value based on the reference brightness value of each control mode, or respectively correct the display color coordinate value and the display brightness value based on the reference color coordinate value of each control mode and the reference brightness value of each control mode.

[0007] When the received control mode is changed to the changed control mode, the control unit may correct the display brightness value based on the reference brightness value of each control mode corresponding to the changed control mode and correct the display brightness value by controlling the light amount of the display system.

[0008] When the received control mode is changed to the changed control mode, the control unit may correct the display color coordinate value based on the reference color coordinate value of each control mode corresponding to the changed control mode and correct the display color coordinate value through gamma correction of the display system.

[0009] In another general aspect, a control method of a display system control device, the display system control device including a storage unit and a control unit, the control method may include: (a) receiving information about a control mode among a plurality of control modes of the display device by the control unit; and (b) controlling the display system by the control unit based on the received control mode and the information stored in the storage unit. In operation (b), based on the received control mode, the display color coordinate value is corrected based on the reference color coordinate value of each control mode in the plurality of control modes, the display brightness value is corrected based on the reference brightness value of each control mode, or the display color coordinate value and the display brightness value are respectively corrected based on the reference color coordinate value of each control mode and the reference brightness value of each control mode.

[0010] In operation (b), when the received control mode is changed to a changed control mode, the display brightness value may be corrected based on a reference brightness value of each control mode corresponding to the changed control mode, and the display brightness value may be corrected by controlling the light amount of the display system.

[0011] In operation (b), when the received control mode is changed to a changed control mode, the display color coordinate value may be corrected based on the reference color coordinate value of each control mode corresponding to the changed control mode, and the display color coordinate value may be corrected by gamma correction of the display system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram showing a display system control device according to an embodiment of the present disclosure.

[0013] Figure 2 is a flowchart illustrating a display system control method according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0014] In order to describe the present disclosure, operating advantages of the present disclosure, and objectives achieved by embodiments of the present disclosure, embodiments of the present disclosure are exemplified and described hereinafter with reference to the accompanying drawings.

[0015] First, the terms used in this application are only used to describe specific embodiments, rather than to limit the present disclosure, and unless otherwise clearly indicated in the context, singular terms may include their plural forms. In addition, it should be understood that the terms "including", "having", etc. used in this application specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof mentioned in this specification, and do not exclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0016] Furthermore, in describing the embodiments of the present disclosure, well-known functions or constructions will not be described in detail since they may unnecessarily obscure the understanding of the present disclosure.

[0017] Figure 1 is a schematic diagram showing a display system control device 1000 according to an embodiment of the present disclosure.

[0018] The display system control device 1000 mentioned herein may be indicated as a device for correcting at least one of a brightness value and a color coordinate value of a display system 10 , the display system 10 including a plurality of control modes including first and second control modes.

[0019] In detail, when the control mode is changed, the brightness of the display may change. The reason is that since a separate switching unit or light guide plate (LGP) is added for each type of display system 10, a difference in panel transmittance may occur. Therefore, a difference may occur in the voltage applied to the liquid crystal of the display system 10, resulting in a brightness difference.

[0020] In addition, a difference in color coordinates may occur based on a rotation level or direction of liquid crystals of a switching cell and interference of an LGP.

[0021] Therefore, in order to solve this problem, the display system control device 1000 according to an embodiment of the present disclosure may include a storage unit 100 and a control unit 200 .

[0022] The storage unit 100 may include a flash memory (not shown) and an electrically erasable programmable ROM (EEPROM, not shown). The flash memory may refer to a non-volatile computer memory device that can electrically erase and rewrite data and stores color coordinate values ​​of the display system 10. In addition, the EEPROM, which is a non-volatile computer memory device that can electrically erase and rewrite data, may store brightness values ​​of the display system 10. In addition, the storage unit 100 may store at least one of a reference color coordinate value and a reference brightness value for each control mode of the display system 10.

[0023] The control unit 200 may control the display system 10 based on the received control mode and the information stored in the storage unit 100 .

[0024] The control unit 200 of the display system control device 1000 according to the exemplary embodiment of the present disclosure may be a processor (e.g., a computer, a microprocessor, a CPU, an ASIC, a circuit, a logic circuit, etc.). The control unit 200 may be implemented by a non-volatile memory storing, for example, (multiple) programs, software instruction reproduction algorithms, etc., and a processor configured to execute (multiple) programs, software instruction reproduction algorithms, etc., and when executed, the non-volatile memory performs the various functions described below. In this article, the memory and the processor may be implemented as separate semiconductor circuits. Alternatively, the memory and the processor may be implemented as a single integrated semiconductor circuit. The processor may be embodied as one or more processors.

[0025] Here, the control unit 200 may correct the display color coordinate value based on the reference color coordinate value of each of the multiple control modes based on any one of the multiple control modes of the display system 10. In addition, the control unit 200 may correct the display brightness value based on the reference brightness value of each of the multiple control modes. In addition, the control unit 200 may correct the display color coordinate value and the display brightness value based on the reference color coordinate value of each of the multiple control modes and the reference brightness value of each control mode, respectively.

[0026] For example, a case is described in which the control mode of the display system 10 is changed from the first control mode to the second control mode when the first control mode refers to the public mode and the second control mode refers to the privacy mode. The public mode mentioned here may refer to a mode in which the occupants in the driver's seat and the front passenger seat can share the display, and the privacy mode may refer to a mode in which the viewing angle of the display is limited and the display can be provided only to the occupants. Meanwhile, in this case, the control unit 200 may correct the display brightness value based on the reference brightness value stored in the storage unit 100, and the display brightness value may be corrected by controlling the light amount of the display.

[0027] In detail, the control unit 200 can control the amount of light of the display by adjusting the duty cycle. The duty cycle mentioned here may refer to adjusting the light intensity of the light source by adjusting the on and off timing of the light source. The light source may be turned on for the duty cycle time of the dimming signal, and the higher the duty cycle, the brighter the brightness. For example, in the case of 100% dimming, the light source may be lit at 100% and its brightness may be 100%, and in the case of 70% dimming, the light source may be lit at 70% and its brightness may be 70%. Through this configuration, the control unit 200 may control the display to repeatedly turn on and off the light source at a visible frequency or greater.

[0028] In more detail, for example, when the first control mode is changed to the second control mode, the control unit 200 may control the driving unit to increase the duty ratio of the light source of the display system 1000 .

[0029] The control unit 200 can correct not only the brightness but also the color coordinates. In addition, when the first control mode is changed to the second control mode, the control unit 200 can correct the display color coordinate value based on the reference color coordinate value in the storage unit 100. Here, the control unit 200 can further correct the color coordinate value by performing gamma correction.

[0030] Gamma may refer to a value for determining the correlation between the brightness of a signal input to the display system 10 and the brightness of an image displayed on the screen. Brightness tones displayed on the same screen may differ based on the gamma value. When the gamma value is 1, the input and output brightness may be the same as each other, when the gamma value is greater than 1, the screen may be displayed darkly in a medium / low grayscale region, and conversely, when the gamma value is less than 1, the screen may be displayed brightly.

[0031] Meanwhile, according to a control method of a display system control device 1000 including a storage unit 100 and a control unit 200 according to another embodiment of the present disclosure, the control unit 200 may receive information about a control mode in operation S100, and control the output of the display system 10 based on the received control mode in operation S200. Here, in operation S200, the control unit 200 may correct the display color coordinate value based on a reference color coordinate value of each of the multiple control modes based on any one of the multiple control modes of the display system 10. In addition, the control unit 200 may correct the display brightness value based on a reference brightness value of each of the multiple control modes. In addition, the control unit 200 may correct the display color coordinate value and the display brightness value based on the reference color coordinate value of each of the multiple control modes and the reference brightness value of each of the control modes, respectively.

[0032] In detail, in operation S200, when the first control mode is changed to the second control mode among the plurality of control modes, the control unit 200 may correct the display brightness value based on the reference brightness value stored in the storage unit 100. Here, the control unit 200 may correct the display brightness value by controlling the light amount of the display.

[0033] In more detail, for example, when the first control mode is changed into the second control mode, the control unit 200 may control the driver to increase the duty ratio of the light source of the display system 1000 .

[0034] In addition, in operation S200, the control unit 200 can correct not only the brightness of the display but also the color coordinates of the display. In addition, for example, when the first control mode is changed to the second control mode, the control unit 200 can correct the display color coordinate value based on the reference color coordinate value in the storage unit 100. Here, the control unit 200 can also correct the color coordinate value by adding gamma correction.

[0035] As described above, the display system control device and the control method thereof according to various embodiments of the present disclosure as described above may change the mode so as not to interfere with the driver's field of view, thereby improving the safety of the driver, passengers, or pedestrians.

[0036] Furthermore, the present disclosure may promote safety by reducing driver inconvenience and emotional changes caused by mode changes.

[0037] Furthermore, the present disclosure can use such a physically simple structure, thereby ensuring higher reliability.

[0038] Although the embodiments of the present invention are described above, the embodiments disclosed in the present disclosure are not intended to limit the spirit of the present disclosure but are provided to fully describe the present disclosure. Therefore, the spirit of the present disclosure may include not only each disclosed embodiment but also a combination of the disclosed embodiments. In addition, the scope of the present disclosure is not limited to these embodiments. In addition, it is obvious to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the appended claims, and all such appropriate changes and modifications should be deemed to fall within the scope of the present disclosure as equivalents.

Claims

1. A display system control device with a color correction function, the device comprising: a storage unit storing information including at least one of a reference color coordinate value of each control mode of a plurality of control modes of a display system and a reference brightness value of each control mode, a display color coordinate value, and a display brightness value; as well as a control unit configured to control the display system based on the received control mode among the plurality of control modes and the information stored in the storage unit, Wherein, based on the received control mode, the control unit is further configured to: correcting the display color coordinate value based on the reference color coordinate value of each control mode, correcting the display brightness value based on the reference brightness value of each control mode, or The display color coordinate value and the display brightness value are respectively corrected based on the reference color coordinate value of each control mode and the reference brightness value of each control mode.

2. The device according to claim 1, wherein: When the received control mode is changed to a changed control mode, the control unit corrects the display brightness value based on the reference brightness value of each control mode corresponding to the changed control mode, and corrects the display brightness value by controlling the light amount of the display system.

3. The device according to claim 1, wherein: When the received control mode is changed to a changed control mode, the control unit corrects the display color coordinate values ​​based on the reference color coordinate values ​​of each control mode corresponding to the changed control mode, and corrects the display color coordinate values ​​through gamma correction of the display system.

4. A control method for a display system control device, the display system control device comprising a storage unit and a control unit, the method comprising: (a) receiving, by the control unit, information on a control mode among a plurality of control modes of a display system; and (b) controlling the display system by the control unit based on the received control mode and the information stored in the storage unit, Wherein, in operation (b), Based on the received control mode, correcting the display color coordinate value based on the reference color coordinate value of each of the plurality of control modes, Correcting the display brightness value based on the reference brightness value for each control mode, or The display color coordinate value and the display brightness value are respectively corrected based on the reference color coordinate value of each control mode and the reference brightness value of each control mode.

5. The method according to claim 4, wherein: In the operation (b), When the received control mode is changed to a changed control mode, the display brightness value is corrected based on the reference brightness value of each control mode corresponding to the changed control mode, and the display brightness value is corrected by controlling the light amount of the display system.

6. The method according to claim 4, wherein: In the operation (b), When the received control mode is changed to a changed control mode, the display color coordinate values ​​are corrected based on the reference color coordinate values ​​of each control mode corresponding to the changed control mode, and the display color coordinate values ​​are corrected by gamma correction of the display system.

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