Display device, method of operating same, and electronic system

Abstract

Disclosed are a display device, an operating method thereof, and an electronic system. The display apparatus includes: a receiver configured to receive a first request signal from outside, the first request signal requesting first performance information as performance information of the display apparatus; a memory configured to store second performance information, the second performance information including a first data block including first data as a header composed of a fixed pattern indicating that it is the first performance information, and a second data block including second data as a block tag for identifying the data block; and a controller configured to output data having a predetermined size starting from the first data as first performance information to the receiver based on the first request signal such that the receiver outputs the first performance information to the outside.

Description

[0001] This application claims the priority and benefit of Korean Patent Application No. 10-2024-0003489, filed with the Korean Intellectual Property Office on January 9, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to a display device, an operating method of the display device, and an electronic system. Background Art

[0003] A display device may display an image based on an input from various source devices connected to the display device. For example, the display device may display an image stored in the display device, and receive and display an image from a source device connected thereto via a cable (such as a High-Definition Multimedia Interface (HDMI)).

[0004] In recent years, digital image display devices capable of high-definition image display have become more widely available, content having a super HD resolution exceeding the full HD (high definition) resolution has increased, and a source device may process a format of content according to performance information of the display device and provide the processed content to the display device. Summary of the Invention

[0005] The present disclosure relates to a display device, an operating method of the display device, and an electronic system including various versions of performance information.

[0006] In addition, the present disclosure relates to a display device, an operating method of the display device, and an electronic system capable of improving compatibility between a source device and a display device.

[0007] In addition, the present disclosure relates to a display device, an operating method of the display device, and an electronic system capable of providing performance information of a display device to a source device.

[0008] According to some embodiments, a display device may include: a receiver configured to receive a first request signal from the outside, the first request signal requesting first performance information as performance information of the display device; a memory configured to store second performance information, the second performance information including a first data block and a second data block, the first data block including first data as a header composed of a fixed pattern indicating that it is the first performance information, and the second data block including second data as a block tag for identifying the data block; and a controller configured to: output, as the first performance information, data having a predetermined size starting from the first data to the receiver based on the first request signal, such that the receiver outputs the first performance information to the outside.

[0009] A method of operating a display device according to some embodiments may include: receiving a first request signal that requests first performance information of the display device; based on the first request signal, reading the first performance information from second performance information that includes the first performance information; reading data of second information of the second performance information as data of first information of the first performance information; and outputting the first performance information.

[0010] An electronic system according to some embodiments may include: a first source device configured to output a first request signal that requests first performance information as performance information of a display device; a second source device configured to output a second request signal that requests second performance information as performance information of the display device; and a display device configured to: output some of the second performance information as the first performance information to the first source device based on the first request signal, and output the second performance information to the second source device based on the second request signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a configuration diagram of an electronic system according to some embodiments.

[0012] Figure 2 is a block diagram of a source device and a display device according to some embodiments.

[0013] Figure 3 is a diagram illustrating an Extended Display Identification Data (EDID) structure.

[0014] Figure 4 is a diagram illustrating data blocks of Display Identification Data (DisplayID).

[0015] Figure 5 is a diagram for explaining the structure of data blocks of DisplayID.

[0016] Figure 6 is a diagram for explaining the structure of data blocks of DisplayID.

[0017] Figure 7 is a diagram illustrating a DisplayID structure according to some embodiments.

[0018] Figure 8 is a diagram illustrating display product identification information of EDID.

[0019] Figure 9 is a diagram illustrating mapping information defining a relationship between DisplayID and EDID according to some embodiments.

[0020] Figure 10It is a diagram for explaining how a display device provides an EDID based on mapping information according to some embodiments.

[0021] Figure 11 It is a diagram for explaining display parameter information of an EDID.

[0022] Figure 12 It is a diagram showing mapping information defining the relationship between a DisplayID and an EDID according to some embodiments.

[0023] Figure 13 It is a diagram for explaining how a display device provides an EDID based on mapping information according to some embodiments.

[0024] Figure 14 It is a diagram for explaining a display system according to some embodiments. Detailed Description

[0025] In the following detailed description, only specific embodiments of the present invention are shown and described by way of illustration. As those skilled in the art will recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention.

[0026] Therefore, the drawings and the description are considered to be illustrative rather than restrictive in nature. Throughout the specification, the same reference numerals represent the same elements. In the flowcharts described with reference to the drawings, the order of operations can be changed, several operations can be combined, operations can be divided, and some operations may not be performed.

[0027] In addition, unless an explicit expression such as "a", "an", or "single" is used, a statement written in the singular form can be understood as the singular form or the plural form. Terms including ordinal numbers (such as first and second) are used to describe various constituent elements, but the constituent elements are not limited by the terms. The terms are only used to distinguish the constituent elements from other constituent elements.

[0028] Figure 1 It is a configuration diagram of an electronic system according to some embodiments.

[0029] According to Figure 1 , the electronic system 100 includes a display device 110 and a source device 120.

[0030] The source device 120 can provide content (such as video, audio, etc.) to the display device 110. For example, the source device 120 can include various types of electronic devices (such as a set-top box, an over-the-top (OTT) device, a digital versatile disc (DVD) player, a Blu-ray disc player, a personal computer (PC), a game console, etc.) capable of providing content to the display device 110.

[0031] The display device 110 can output or display the content received from the source device 120. For example, the display device 110 can include various types of electronic devices (such as, network TV, smart TV, Internet TV, network TV, Internet Protocol TV (IPTV), PC, etc.) that can receive and output content. Since the display device 110 can receive and display content, it can be referred to as a content receiving device, a computing device, etc. A plurality of source devices can be connected to the display device 110.

[0032] The display device 110 and the source device 120 can be connected through various connection devices and can send and receive content. The various connection devices can include cables, and the display device 110 and the source device 120 can include one or more ports for cable connection. The one or more ports can include digital input interfaces (such as, High-Definition Multimedia Interface (HDMI) port, DisplayPort, Type-C port, etc.). For example, the display device 110 and the source device 120 can each have an HDMI port and perform communication through the corresponding ports.

[0033] The Video Electronics Standards Association (VESA) has established the DisplayID (Display Identification Data) standard and the Extended Display Identification Data (EDID) standard related to the performance information of the display device 110, as well as the Display Data Channel (DDC) protocol for data communication between the source device 120 and the display device 110. According to the DDC protocol, when the display device 110 is connected to the source device 120 and power is applied to the display device 110, the display device 110 can provide DisplayID or EDID to the source device 120. In addition, when the source device 120 receives DisplayID or EDID from the display device 110, the source device can provide the content corresponding to the DisplayID or EDID, so that the display device 110 can display an image. The display device 110 can store at least one of DisplayID and EDID.

[0034] The DisplayID and EDID define a data format "for enabling the source device 120 to read the display performance of the display device 110". For example, the DisplayID and EDID may include screen ratio information, as well as information about the manufacturer name, month and year of product manufacture, product type, DisplayID version and EDID version, resolution and color coordinates of the product, phosphor and filter types, timing, screen size, brightness, pixels, etc. The DisplayID is a VESA standard intended to replace the EDID. For example, since the EDID does not have enough bits to contain high-resolution information (such as 4K or 8K ultra-high definition (UHD)), when the EDID contains low-resolution (e.g., HD or full HD) information, the DisplayID may contain high-resolution information (such as 4K or 8K UHD). The following will refer to Figures 3 to 6 for a detailed description of the DisplayID and EDID.

[0035] As described above, compared with the EDID, the DisplayID also includes performance information about specific functions (such as resolution, etc.). In addition, the display device 110 including the DisplayID may provide performance information according to the DisplayID, and the source device 120 connected to the display device 110 may be forced to read the performance information stored by the display device 110. However, when the performance information stored by the display device 110 and the performance information that the source device 120 can read are different from each other (for example, when the display device 110 stores the DisplayID as performance information and the source device 120 can only read the EDID as the performance information of the display device 110), there is a problem that the source device 120 cannot read the performance information from the display device 110.

[0036] Figure 2 is a block diagram of a source device and a display device according to some embodiments.

[0037] In some embodiments, the electronic device 200 includes a source device 220 and a display device 210.

[0038] In some embodiments, the source device 220 includes a transmitter 221, an image processor 223, and a controller 225.

[0039] In some embodiments, the transmitter 221 may output a video signal, an audio signal, etc. having a resolution that can be processed by the display device 210. In addition, the transmitter 221 may receive a DisplayID or an EDID including display performance information from the display device 210, and the display performance information includes information about the supported resolution. In some embodiments, the source device 220 may read only the EDID 214 as the performance information of the display device 210. According to some embodiments, when the source device 220 can read only the EDID 214 of the display device 210, the transmitter 221 may receive the value of specific information of the DisplayID 212 from the display device 210 as the value of specific information of the EDID 214.

[0040] In some embodiments, the image processor 223 may process an image to be transmitted through the transmitter 221 under the control of the controller 225. The controller 225 may control the overall operation of the source device 220. For example, the controller 225 may control the image processor 223 such that the image processor processes a video signal, an audio signal, etc. to be sent to the display device 210, and may perform control such that the processed video signal, audio signal, etc. are output through the transmitter 221.

[0041] In some embodiments, the display device 210 includes a receiver 211, a memory 213, a controller 215, and a display 217.

[0042] In some embodiments, the receiver 211 may receive a video signal, an audio signal, etc. from the source device 220 according to the connected protocol under the control of the controller 215, and output them to the display 217. In some embodiments, the receiver 211 may receive a request signal for requesting performance information from the transmitter 221, and output the EDID 214 or the DisplayID 212 as the performance information of the display device 210 to the transmitter 221.

[0043] In some embodiments, the display 217 may display a video signal, etc. received from the controller 215 on the screen.

[0044] In some embodiments, the memory 213 may include the DisplayID 212 and the EDID 214 as performance information of the display device 210. In some embodiments, the EDID 214 may be stored in some areas within the DisplayID 212, or may be stored in some of the multiple data blocks of the DisplayID 212. In some embodiments, the memory 213 may store the EDID 214 in a form where "specific information of the EDID 214 is mapped to specific information of the DisplayID 212". Optionally, the memory 213 may store a command "indicating that the controller 215 reads specific information of the DisplayID 212 as EDID (214) information". For example, in a case where specific information of the DisplayID 212 is mapped to specific information of the EDID 214, the controller 215 may read specific information of the DisplayID 212 as the EDID (214) based on this command.

[0045] In some embodiments, the controller 215 may control the overall operation of the display device 210. When the receiver 211 receives a signal requesting the EDID from the source device 220, the controller 215 may control the receiver 211 such that the receiver 211 sends the EDID 214 stored in the memory 213 to the source device 220. The source device 220 may output content having a first resolution (e.g., HD or full HD) based on the EDID 214. In some embodiments, when the receiver 211 receives a signal requesting the EDID from the source device 220, the controller 215 may output at least one subset of the DisplayID 212 to the source device 220 as the EDID 214. In some embodiments, when the receiver 211 receives a signal requesting the EDID from the source device 220, the controller 215 may sequentially read the EDID 214 stored in the memory 213 and read the value of specific information of the DisplayID 212 as the value of specific information of the EDID 214. Specifically, the controller 215 may read specific information of the DisplayID 212 as the EDID (214) information based on the EDID 214 stored in the memory 213 in a form where "specific information of the EDID 214 is mapped to specific information of the DisplayID 212". Optionally, the controller 215 may read specific information of the DisplayID 212 as the EDID (214) information based on the command "indicating reading specific information of the DisplayID 212 as EDID (214) information" stored in the memory 213.

[0046] In some embodiments, the memory 213 may further include mapping information (e.g., mapping data) 216. The mapping information 216 may include information for mapping specific information of the EDID 214 to specific information of the DisplayID 212. Specifically, the mapping information 216 may include: information of the EDID 214 that is the subject of the mapping, and information of the DisplayID 212 that is to be mapped to data corresponding to the information of the EDID.

[0047] In some embodiments, when the receiver 211 receives a signal requesting the EDID from the source device 220, based on the mapping information 216, the controller 215 may read the EDID 214 stored in the memory 213 and identify the information of the EDID 214 that is the subject of the mapping. The controller 215 may, based on the mapping information 216, read the data of the information of the DisplayID 212 as data corresponding to the "information of the EDID 214 that is the subject of the mapping", and control the receiver 211 such that the receiver sends the read data to the source device 220 as the data of the EDID 214.

[0048] In some embodiments, when the receiver 211 receives a signal requesting the DisplayID from the source device 220, the controller 215 may control the receiver 211 such that the receiver sends the DisplayID 212 stored in the memory 213 to the source device 220. The source device 220 may output content having a second resolution (such as 4K or 8K UHD) based on the DisplayID 212.

[0049] The display device 210 according to some embodiments has the following advantages: By storing the EDID 214 in some areas within the DisplayID 212 and mapping specific information of the EDID 214 to specific information of the DisplayID 212, the size of the performance information stored in the display device 210 can be maintained at the DisplayID size (e.g., 128 bytes). In some embodiments, the memory 213 may be implemented as an electrically erasable programmable read-only memory (EEPROM).

[0050] In some embodiments, the transmitter 221 of the source device 220 and the receiver 211 of the display device 210 may be connected by one or more cables. Hereinafter, it is assumed that the transmitter 221 and the receiver 211 are connected by an HDMI cable, and the communication process in this case will be described.

[0051] In some embodiments, the HDMI cable includes transition minimized differential signaling (TMDS) lines 231 for transmitting audio signals, video signals, etc., DDC lines 233 for transmitting DisplayID or EDID information, power lines 235, and hot plug detection (HPD) lines 237 for controlling the reading of DisplayID or EDID.

[0052] In some embodiments, data communication between the source device 220 and the display device 210 follows the DDC protocol. According to the DDC protocol, the source device 220 and the display device 210 can be connected via an HDMI cable, and the transmitter 221 of the source device 220 can provide a preset voltage (e.g., a voltage of 5V) to the receiver 211 of the display device 210 via the power line 235. When the receiver 211 receives the preset voltage, the receiver 211 can send a high-level signal to the transmitter 221 via the HPD line 237. When the transmitter 221 receives the high-level signal from the receiver 211 via the HPD line 237, the transmitter 221 can send a request signal for requesting DisplayID or EDID (i.e., performance information of the display device 210) via the DDC line 233, and when the receiver 211 receives the request signal, the receiver 211 can provide the performance information of the display device 210 to the transmitter 221.

[0053] Here, the DDC protocol uses a high-speed synchronous serial communication system called inter-integrated circuit (I2C) to support two-way communication between the source device 220 and the display device 210. Therefore, the source device 220 and the display device 210 can be divided into a master device and a slave device, and exchange data or signals. In other words, the source device 220 can act as the master device and send a signal requesting the DisplayID or EDID of the display device 210, and the display device 210 can act as the slave device and receive the signal from the source device 220. At the same time, according to the DDC protocol standard, the DisplayID and EDID in the display device 210 can use different slave addresses. Specifically, from the display device 210 including DisplayID and EDID, the source device 220 can read the EDID information using the first slave address (e.g., slave addresses A0h and A1h), and read the DisplayID information using the second slave address (e.g., slave addresses A4h and A5h).

[0054] According to some embodiments, the display device 210 may output the EDID 214 or the DisplayID 212 stored in the display device 210 according to the performance information readable by the source device 220. According to some embodiments, since the display device 210 stores the DisplayID 212 and the EDID 214 together, there is an advantage of improving the compatibility between the source device 220 and the display device 210. Hereinafter, the EDID and the DisplayID will be described. However, the information or values related to the EDID and the DisplayID described below are for facilitating explanation and understanding, and the information or values of the EDID and the DisplayID are not limited to the following description and drawings.

[0055] Figure 3 is a diagram showing the EDID structure.

[0056] Extended Display Identification Data (EDID) is a standardized means for a display device (e.g., Figure 2 reference numeral "210" therein) to transmit its own display performance information to a source device (e.g., Figure 2 reference numeral "220" therein). The display device 210 may send performance information (such as default resolution and recommended resolution) to the source device 220 connected thereto through the EDID, and the source device 220 may generate content in a format required to satisfy the request of the display device 210 based on the EDID.

[0057] The EDID 300 may include one or more data blocks to have a scalable structure so that information can be included according to an increase in the specifications of the display device 210. For example, the EDID 300 may include a basic EDID block and one or more extended EDID blocks. Referring to Figure 3 , the EDID 300 includes four blocks: a basic EDID block 310, a first extended EDID block 320, a second extended EDID block 330, and a third extended EDID block 340. The basic EDID block 310 as the first block is a necessary block and may have a version of EDID 1.3 or higher. The basic EDID block 310 may be referred to as a VESA block. The first extended EDID block 320 as the second block may represent an extended block or a block map (e.g., BLOCK MAP1). For example, when the EDID 300 includes a total of two blocks, the first extended EDID block 320 may become an extended block, and when the EDID 300 includes three or more blocks, the first extended EDID block 320 may represent a block map containing information about the extended blocks.

[0058] The basic EDID block 310 may include various information representing the characteristic information of the display device 210. The size of the basic EDID block 310 may be fixed to a predetermined size (e.g., 128 bytes). The basic EDID block 310 includes a header 311 (also known as a header), display product identification information 312, EDID version information 313, basic display parameters 314, color characteristics 315, detailed timing information of the resolutions supported by the display device 316, a checksum 317, etc. The header 311 consists of a fixed pattern indicating that it is an EDID file. The display product identification information 312 includes product information (such as the display manufacturer, manufacturing date, etc.). The basic display parameters 314 define the characteristics of the display device. The color characteristics 315 define the red, green, and blue (RGB) color space conversion technology used in the display device. For example, the basic display parameters 314 may define whether the display device has received any analog or digital input (e.g., reference symbol "314_1"), the maximum horizontal and vertical sizes of the display (e.g., reference symbols "314_2" and "314_3"), gamma conversion characteristics (e.g., reference symbol "314_4"), feature support (e.g., power management function (e.g., reference symbol "314_5")), etc.

[0059] In some embodiments, the EDID 300 may be stored in some areas within the DisplayID. In some embodiments, some areas within the DisplayID may represent data blocks within the DisplayID. In some embodiments, specific information of the EDID 300 (such as the display product identification information 312, basic display parameters 314, etc.) may be the same as specific information within the DisplayID. Thus, the memory 213 of the display device 210 according to some embodiments may store the EDID 214 in the form of "specific information of the EDID 214 is mapped to specific information of the DisplayID 212", or may store a command "indicating that the controller 215 reads specific information of the DisplayID 212 as EDID (214) information". The controller 215 according to some embodiments may, based on the command stored in the memory 213, read specific information of the DisplayID 212 as EDID (214) information. Optionally, the mapping information (e.g., Figure 2 reference symbol "216" in Figures 4 to 6 of the display device 210 according to some embodiments may map specific information of the EDID 300 to specific information within the DisplayID, and define the information of the DisplayID as the information of the EDID. A detailed description of the DisplayID will be described below with reference to

[0060] Figure 4A diagram showing data blocks of DisplayID. Specifically, Figure 4 Data blocks showing DisplayID and block labels of corresponding blocks.

[0061] DisplayID 400 is a VESA standard intended to replace the EDID standard. Version 1.1 of DisplayID was released in March 2009, version 1.3 of DisplayID was released in September 2013, and version 2.0 of DisplayID was released in September 2017. The version of DisplayID described herein may be DisplayID 2.0, but is not limited thereto. Similar to EDID (e.g., Figure 3 reference symbol "300" therein), DisplayID 400 may include a product name and performance information related to the display device 210 (such as color gamut, supported functions, supported resolutions, etc.). The display device 210 may send DisplayID 400 as performance information to the source device 220 connected thereto, and the source device 220 may generate content in a format required to satisfy the request of the display device 210 based on DisplayID 400. Meanwhile, the difference between DisplayID 400 and EDID 300 is that DisplayID 400 refers to the concept of using an independently defined modular structure to provide specific information.

[0062] Referring to Figure 4 , the data blocks of DisplayID 400 include a display product identification information block (or product identification data block) 420, a display parameter block 430, a detailed timing information block 440 that can be supported by the display device, a display interface 450, etc., all of which are independently defined. The display product identification information block 420 contains product information (such as monitor manufacturer, manufacturing data, etc.), and the display parameter block 430 defines the characteristics of the display device. The data blocks of DisplayID may also include a reserved block 410 for additional data. Depending on the source device 220 connected to the display device 210, the reserved block 410 may be a data block for storing performance information of the display device 210 that is additionally required. Meanwhile, DisplayID 400 may include more data blocks containing performance information related to the display device 210.

[0063] The data blocks of DisplayID 400 may include block labels unique to the data blocks. The controller 215 of the display device 210 may identify the data blocks based on the block labels of the data blocks and read information from the corresponding data blocks. For example, the controller 215 may identify the corresponding data block as the display product identification information block 420 containing display product information based on the block label "20h" and read information from the corresponding data block.

[0064] In some embodiments, the reserved block 410 may contain an EDID. In some embodiments, a source device 220 that can only read the EDID may request the EDID as performance information from the display device 210 and read the EDID stored in the display device 210 using a first slave address. In response to the request from the source device 220, the controller 215 may read the EDID in the reserved block 410. The display device 210 according to some embodiments may map the value of specific information of EDID information that is the same as the DisplayID information to the corresponding data block of the DisplayID using mapping information without describing it in the reserved block 410. Optionally, the display device 210 according to some embodiments may store the EDID in the form of "specific information of the EDID is mapped to specific information of the DisplayID" without describing the value of specific information of the EDID information that is the same as the DisplayID information in the reserved block 410, or the display device 210 according to some embodiments may store a command indicating "read specific information of the DisplayID as EDID information" in the memory. Hereinafter, the display product identification information block 420 and the display parameter block 430 among the data blocks will be described to detail the structure of the data blocks of the DisplayID.

[0065] Figure 5 and Figure 6 are diagrams for explaining the structure of the data blocks of the DisplayID. Specifically, Figure 5 is a diagram showing the display product identification information block of the DisplayID, Figure 6 is a diagram showing the display parameter block of the DisplayID that defines the characteristics of the display device.

[0066] The data blocks of the DisplayID (e.g., Figure 4 the reference symbol "400" in it) may include various fields. The size of each field in the data block of the DisplayID 400 is variable and no specific number of bytes is specified; however, the size of a specific field may be fixed. Figure 5 and Figure 6 The values of the respective information items shown in are exemplary and are not limited thereto.

[0067] Referring to Figure 5 the display product identification information block 420 may contain a block tag (TAG) 421 for the display product identification information block, revision information 422, a vendor ID 424, etc. The first field is a field for identifying which data block the corresponding data block is and represents the tag 421 of the corresponding data block. In other words, as Figure 5As shown, the block tag for displaying the product identification information block may be "20h" (the offset field may be "05h"). Thus, the controller 215 of the display device 210 may identify the corresponding data block as the display product identification information block based on the block tag "20h". The second field represents the block revision number "00h" of the corresponding data block (see reference numeral "422"), and the corresponding data may increase when bits are added to the block or bits are changed. The third field represents the number of payloads used in the corresponding data block (e.g., reference numeral "423"), i.e., "0Ch", and other fields may include the vendor ID 424, product code 425, serial number 426, etc. of the display device as the performance information of the display device 210 defined in the display product identification information block.

[0068] Referring to Figure 6 , the display parameter block 430 may include the overall parameters of the display device 210. As shown in the figure, the display parameter block 430 may include a block tag (TAG) "21h" for the display parameter block (see reference numeral "431"), a revision number "00h" of the display parameter block (see reference numeral "432"), and the number of payloads of the display parameter block, i.e., "1Dh" (see reference numeral "433"), and may include the horizontal size of the image and the vertical size of the image (see reference numerals "434" and "435") etc. as the performance information of the display device defined in the corresponding data block.

[0069] In some embodiments, the specific information of the data block of the DisplayID may be the same as the specific information of the EDID, and the display device according to some embodiments may map the specific information of the EDID to the corresponding information of the DisplayID using the mapping information. Hereinafter, the structure of the DisplayID including the EDID and the operation method of the source device for reading the EDID based on the mapping information will be described.

[0070] Figure 7 is a diagram showing the DisplayID structure according to some embodiments. Specifically, the reserved block 710 of the data block of the DisplayID 700 may include the EDID. The source device according to some embodiments may request the EDID as the performance information related to the display device 210, and the source device may read the EDID of the display device using the first slave address. The source device according to some other embodiments may request the DisplayID as the performance information related to the display device 210, and the source device may read the DisplayID of the display device using the second slave address.

[0071] Referring to Figure 7, the DisplayID may include multiple data blocks. Specifically, the DisplayID may include a reserved block 710, a display product identification information block (or product identification data block) 720, a display parameter block 730, a timing information block 740, a display interface 750, etc. In some embodiments, the DisplayID may include multiple regions, where the first region may include EDID information about a first resolution, and the second region may include DisplayID information about a second resolution.

[0072] In some embodiments, the multiple data blocks of the DisplayID may contain a unique block tag TAG for each of them. Thus, the controller of the display device that reads the DisplayID in response to a request from the source device may identify the data blocks based on the block tags of the data blocks and output the information in the corresponding data blocks as the performance information of the display device.

[0073] In some embodiments, at least a part of the reserved block 710 may contain the EDID as performance information related to the display device. This part of the reserved block 710 may contain: a header 711 composed of a fixed pattern indicating that the corresponding information is the EDID, display product identification information 712, EDID version information 713 and 714, display parameters 715, color characteristics 716, etc. Hereinafter, each information item may be referred to as a section.

[0074] In some embodiments, the EDID and the DisplayID may contain duplicate information. For example, the display product identification information 712 of the EDID in the reserved block 710 may be the same as the information in the display product identification information block 720 of the DisplayID, and the display parameters 715 of the EDID in the reserved block 710 may be the same as the information in the display parameter block 730 of the DisplayID. In some embodiments, the manufacturer may use mapping information to define the relationship between the EDID information and the DisplayID information. In other words, the manufacturer may define the values of specific information of the EDID information that is the same as the DisplayID information in the mapping information, rather than describing them in the reserved block 710, so that the controller 215 can obtain the corresponding information of the EDID from the DisplayID.

[0075] In some embodiments, the controller 215 that reads the EDID as the performance information of the display device 210 may identify that the EDID starts with "a header 711 composed of a fixed pattern" and reads the EDID with a fixed size (e.g., a predetermined length) as the performance information of the display device 210. Refer to Figure 7, the controller 215 can read the value (VALUE) of the header 711 of the first section, i.e., “(00 FF FF FF FF FF FF 00)h”, and read the product identification information 712 of the second section. Based on the mapping information 216 in the memory 213, the controller 215 can identify that the value of the product identification information 712 has been defined by the mapping information 216. The controller 215 can read the value “01h” of the EDID version information 713 and the value “04h” of the EDID version (revision) information 714 in the third and fourth sections, and read the display parameters 715 of the fifth section. Based on the mapping information 216 in the memory 213, the controller 215 can identify that the value of the display parameters 715 has been defined by the mapping information 216. The controller 215 can obtain the value of the EDID information based on the mapping information 216, and output the EDID as the performance information of the display device 210 to the receiver 211. Below will refer to Figures 8 to 13 Describe how the controller 215 obtains the value of the EDID information based on the mapping information 216.

[0076] Figure 8 is a diagram showing the display product identification information of the EDID.

[0077] According to the EDID standard, the display product identification information of the EDID can include the manufacturer name 810, product code 820, serial number 830, manufacturing time information 840 and 850, etc. In addition, the address ADDRESS and size BYTE of each display product identification information item of the EDID can be fixed.

[0078] In some embodiments, the manufacturer can store the mapping information 216 in the memory 213 of the display device 210, so that the controller 215 can identify, among the data blocks of the DisplayID, the data block containing the information identical to the display product identification information of the EDID, and read the information from the corresponding data block. The mapping information 216 defines the relationship between the DisplayID and the EDID according to a predetermined form.

[0079] Figure 9 is a diagram showing the mapping information defining the relationship between the DisplayID and the EDID according to some embodiments. Specifically, Figure 9 shows the display product identification information in the EDID (for example, Figure 7 the reference symbol “712” in Figure 7 and the relationship with the display product identification information block of the DisplayID (for example,

[0080] In some embodiments, the mapping information 216 may include the address (ADDRESS) of the EDID information that is the subject of the mapping, the value (VALUE) to be input to the corresponding address, the block tag (BLOCK TAG) of the data block of the DisplayID that contains information corresponding to the EDID information, and the start point (START POINT) corresponding to the EDID information. However, the mapping information is not limited thereto, and the manufacturer may store additional information required to define the relationship between the EDID information and the DisplayID information as the mapping information. In addition, the manufacturer may omit some of the above information.

[0081] Referring to Figure 9 , the first mapping information (MAPPING 1) may include the address "08h" of the display product identification information of the EDID that is the subject of the mapping (e.g., Figure 8 the reference symbol "810" in

[0082] Figure 10 is a diagram for explaining how a display device according to some embodiments provides an EDID based on mapping information.

[0083] In some embodiments, the controller 215 may read the EDID in the reserved block of the DisplayID based on a request from the source device 220. The controller 215 may identify that it is an EDID from the header information composed of a fixed pattern and sequentially read the EDID having a fixed size.

[0084] In some embodiments, the controller 215 may identify that the display product identification information of the EDID has been defined by the information in the DisplayID based on the mapping information in the memory 213 of the display device.

[0085] Referring together to Figure 8 the EDID information of Figure 9Regarding the first mapping information, the controller 215 can recognize that the display product identification information at the address "08h" of the EDID is defined by the first mapping information, and detect the data block corresponding to the block tag "20h" of the DisplayID (e.g., reference symbol "1010") according to the value of the block tag (BLOCKTAG) of the first mapping information. When the controller 215 recognizes the data block corresponding to the block tag, the controller 215 can detect the start point of the data corresponding to the display product identification information of the EDID according to the first mapping information. Specifically, since the first mapping information defines 3 bytes as the start point, the controller 215 can determine the vendor ID located 3 bytes after the block tag as the start point of the data corresponding to the display product identification information of the EDID (e.g., reference symbol "1020"). For example, the vendor ID may correspond to the manufacturer name of the display product identification information of the EDID (e.g., Figure 8 reference symbol "810" in). According to the EDID standard, the size of the display product identification information of the EDID is fixed at 10 bytes. Therefore, the controller 215 can read 10 bytes of data starting from the vendor ID (VENDORID) as the display product identification information of the EDID.

[0086] Refer to Figure 8 , the display product identification information of the EDID includes the manufacturer name 810, product code 820, serial number 830, and manufacture time information 840 and 850 in the named order. In Figure 10 , the display product identification information block of the DisplayID includes the vendor ID, product code, serial number, and manufacture time information (MANUFACTURE WEEK and MANUFACTURE YEAR) in the named order. Therefore, through the size of the display product identification information of the EDID, the corresponding information items of the DisplayID can correspond to the corresponding information items of the EDID.

[0087] Figure 11 is a diagram for explaining the display parameter information of the EDID.

[0088] According to the EDID standard, the display parameter information of the EDID may include whether the display device has received any analog or digital input (e.g., reference symbol "1110"), the maximum horizontal size of the display (e.g., reference symbol "1120") and the maximum vertical size (e.g., reference symbol "1130"), gamma conversion characteristics (e.g., reference symbol "1140"), power management functions (e.g., reference symbol "1150"), etc. In addition, the address (ADDRESS) and size (BYTE) of each of the display parameter information in the EDID may be fixed.

[0089] In some embodiments, the manufacturer may generate and store mapping information that defines the relationship between the DisplayID and the EDID in a predetermined form, such that the controller 215 identifies, among the data blocks of the DisplayID, a data block that contains information identical to the display parameter information of the EDID, and reads the information in the corresponding data block.

[0090] Figure 12 is a diagram showing mapping information that defines the relationship between the DisplayID and the EDID according to some embodiments. Specifically, Figure 12 is for explaining when the second mapping information defines the relationship between the display parameter information in the EDID (e.g., Figure 7 reference symbol "715" in ) and the display parameter of the DisplayID (e.g., Figure 7 reference symbol "730" in ), and the information of the DisplayID corresponding to the EDID information is not continuous.

[0091] Referring to the first row 1210 of the second mapping information (MAPPING 2), the second mapping information (MAPPING 2) may include the address "14h" of the display parameter information of the EDID that is the subject of the mapping (e.g., Figure 11 reference symbol "1110" in ) and the value "B5h" of the data to be input to the corresponding address. Based on the second mapping information (MAPPING 2), the controller 215 may read the value corresponding to the address "14h" of the display parameter information of the EDID as the input value "B5h".

[0092] Referring to the second row 1220 of the second mapping information (MAPPING 2), the second mapping information (MAPPING 2) may include the address "15h" of the display parameter information of the EDID that is the subject of the mapping (e.g., Figure 11 reference symbol "1120" in ), the block label "21h" of the display parameter block of the DisplayID that contains the display parameter information, and the starting point "3" of the DisplayID information corresponding to the EDID information based on the block label.

[0093] In the above manner, other lines of the second mapping information (MAPPING 2) may also include the addresses "16h", "17h", and "18h" of the display parameter information of the EDID that is the main body of the mapping (for example, Figure 11 reference numerals "1130", "1140", and "1150" in

[0094] ), the block label "21h" of the display parameter block of the DisplayID that includes the display parameter information, and the start points "5", "31", and "11" of the DisplayID information corresponding to the EDID information based on the block label.

[0095] Figure 13 FIG. is a diagram for explaining how a display device according to some embodiments provides an EDID based on mapping information.

[0096] In some embodiments, based on the mapping information 216 in the memory 213 of the display device 210, the controller 215 can recognize that the display parameter information of the EDID has been defined by the information in the DisplayID.

[0097] Referring together to Figure 11 the EDID information and Figure 12 the second mapping information, the controller 215 can recognize that the display parameter information at the address "14h" of the EDID is defined by the second mapping information, and read the value corresponding to the address "14h" of the EDID as "B5h" according to the second mapping information.

[0098] In some embodiments, the controller 215 can recognize that the display parameter information at the address "15h" of the EDID is defined by the second mapping information, and detect the data block of the DisplayID corresponding to the block label "21h" according to the block label value of the second mapping information (for example, reference numeral "1310"). When the controller 215 recognizes the data block corresponding to the block label, it can detect the start point of the data corresponding to the display parameter information of the EDID according to the second mapping information. In other words, the controller 215 can determine, based on the second mapping information, the horizontal image size (HORIZONTAL IMAGE SIZE) located 3 bytes after the block label as the start point (for example, reference numeral "1320"). For example, the horizontal image size (HORIZONTAL IMAGE SIZE) may correspond to the horizontal screen size of the display parameter information of the EDID (for example, Figure 11(reference numeral "1120" in ). According to the EDID standard, the size of the horizontal screen size information of the display parameters of the EDID is fixed at 1 byte. Therefore, the controller 215 can read 1 byte of data from the horizontal image size (HORIZONTAL IMAGE SIZE) information as the horizontal screen size information of the EDID. In the above manner, the controller 215 can obtain the display parameter information of the EDID.

[0099] As described above, the manufacturer can store the EDID in the reserved block of the DisplayID. In addition, the manufacturer can store the EDID by mapping duplicate information between the EDID information and the DisplayID information. Based on the EDID storage method according to some embodiments, the display device can store the DisplayID and the EDID together while maintaining the size of the DisplayID, and there is an advantage that the compatibility between the source device and the display device can be improved.

[0100] Figure 14 is a diagram for explaining a display system according to some embodiments.

[0101] Refer to Figure 14 , a display system 1400 according to some embodiments includes a processor 1410, a memory 1420, a display device 1430, and a peripheral device 1440 electrically connected to a system bus 1450.

[0102] The processor 1410 can control the data input and output of the memory 1420, the display device 1430, and the peripheral device 1440, and perform image processing on the image data transmitted between the corresponding devices.

[0103] The memory 1420 may include a volatile memory (such as a dynamic random access memory (DRAM)) and / or a non-volatile memory (such as a flash memory). The memory 1420 may be configured with a DRAM, a phase change random access memory (PRAM), a magnetic random access memory (MRAM), a resistive random access memory (ReRAM), a ferroelectric random access memory (FRAM), a NOR flash memory, a NAND flash memory, a hybrid flash memory (e.g., a memory in which a static random access memory (SRAM) buffer, a NAND flash memory, and a NOR interface logic are combined), etc. The memory 1420 can store the image data obtained from the peripheral device 1440, or store the image signal processed by the processor 1410.

[0104] The display device 1430 includes a memory 1431 for storing performance information of the display device 1430, and a display panel 1435 for displaying an image according to the performance of the display device 1430. In some embodiments, the display device 1430 may include a DisplayID 1432 and an EDID 1433 as performance information, and mapping information (e.g., mapping data) 1434 that defines the relationship between specific information of the DisplayID 1432 and specific information of the EDID 1433. The DisplayID 1432 and the EDID 1433 may be the DisplayID and the EDID described with reference to Figures 7 to 13 The DisplayID and the EDID described in

[0105] The peripheral device 1440 may be a device (such as a camera, a scanner, a webcam, etc.) for converting video, a still image, etc. into an electrical signal. The image data obtained by the peripheral device 1440 may be stored in the memory 1420, or may be displayed on the display panel 1435 in real time.

[0106] The display system 1400 may be provided in a mobile electronic product (such as a smart phone), but is not limited thereto, and may be provided in various types of electronic products that display an image.

[0107] Although this disclosure includes many specific implementation details, these should not be construed as limitations on the scope that may be claimed. The specific features described in the context of separate embodiments in this disclosure may also be implemented combinatorially in a single embodiment. Conversely, the various features described in the context of a single embodiment may also be implemented separately or in any suitable sub-combination in multiple embodiments. In addition, although the features may be described above as acting in a specific combination, in some cases one or more features from the combination may be excluded from the combination, and the combination may relate to a sub-combination or a variation of the sub-combination.

[0108] As described above, the embodiments have been disclosed in the drawings and the specification. The specific terms used in this specification have been used to describe the embodiments; however, they have been used for the purpose of describing the technical idea of this disclosure and have not been used to limit the meaning and scope of this disclosure described in the claims. Therefore, those skilled in the art will understand that various modifications and other equivalent implementations can be made therefrom. Therefore, the true technical protection scope of this disclosure should be defined by the technical scope of the appended claims.

Claims

1. A display device, comprising: a receiver configured to receive a first request signal from an external device, the first request signal requesting first performance information as performance information of the display device; a memory configured to store second performance information, the second performance information including a first data block and a second data block, wherein the first data block includes first data, wherein the first data is a header including a fixed pattern representing the first performance information, wherein the second data block includes second data, wherein the second data includes one or more block tags identifying one or more data blocks; and a controller configured to: in response to the first request signal, output the first performance information obtained from the first data to the receiver, wherein the first performance information has a predetermined size, wherein the receiver is configured to output the first performance information to the external device.

2. The display device according to claim 1, wherein the controller is configured to identify the first performance information based on the first data, and the controller is configured to sequentially read the first performance information starting from the first data, the first performance information having a predetermined length.

3. The display device according to claim 2, wherein, the memory is configured to store a command instructing the controller to read second information in the second data block, wherein the second information is mapped to first information among multiple pieces of information of the first performance information, wherein the controller is configured to read the second information as the first information based on the command.

4. The display device according to claim 2, wherein, the memory is configured to store mapping information, wherein the mapping information represents the mapping of the first information among multiple pieces of information of the first performance information to the second information in the second data block, wherein the controller is configured to read the second information as the first information based on the mapping information.

5. The display device according to claim 4, wherein, The mapping information includes: third information for identifying the first information; the second data; and fourth information for identifying the second information.

6. The display device according to any one of claims 1 to 5, wherein the receiver is configured to: further receive a second request signal from the external device, the second request signal requesting second performance information as performance information of the display device.

7. The display device according to claim 6, wherein the controller is configured to identify the second data block based on the second data, and the controller is configured to output the information of the second data block as the second performance information to the receiver.

8. The display device according to any one of claims 1 to 5, wherein the first performance information includes extended display identification data, and the second performance information includes display identification data.

9. The display device according to any one of claims 1 to 5 further comprises: a display configured to: display first content based on the first performance information, the first content having a first resolution; and display second content based on the second performance information, the second content having a second resolution different from the first resolution.

10. An operation method of a display device, the operation method comprising: receiving a first request signal requesting first performance information of the display device; reading the first performance information from second performance information based on the first request signal, the second performance information including the first performance information, and / or obtaining first information of the first performance information based on second information read from the second performance information; and outputting the first performance information.

11. The method for operating a display device according to claim 10, wherein, The steps of reading the first performance information from the second performance information include: Identifying the first performance information based on first data having a fixed pattern; and Sequentially reading data having a predetermined size starting from the first data.

12. The method of operating a display device according to claim 10, wherein, The steps of obtaining the first information of the first performance information based on the second information read from the second performance information include: Identifying the first information based on mapping information; Detecting a data block based on the mapping information, the data block including the second information; Identifying the second information in the data block based on the mapping information; and Mapping the data of the second information to the first information.

13. The method of operating a display device according to any one of claims 10 to 12, wherein The first performance information includes extended display identification data, and the second performance information includes display identification data.

14. The method of operating a display device according to any one of claims 10 to 12, further comprising: Receiving a second request signal that requests the second performance information of the display device; Reading the second performance information based on the second request signal; And Outputting the second performance information.

15. An electronic system, comprising: A first source device configured to output a first request signal that requests first performance information, the first performance information including performance information of a display device; A second source device configured to output a second request signal that requests second performance information, the second performance information including performance information of a display device; And A display device configured to output at least one subset of the second performance information as the first performance information to the first source device based on the first request signal, and configured to output the second performance information to the second source device based on the second request signal.

16. The electronic system according to claim 15, wherein, The first performance information includes first data having a fixed pattern that identifies the first performance information, Wherein the display device is configured to output the first performance information having a predetermined size based on the first data according to the first request signal.

17. The electronic system according to claim 15, wherein The first source device is configured to read the first performance information based on a first slave address, and the second source device is configured to read the second performance information based on a second slave address different from the first slave address.

18. The electronic system according to claim 17, wherein The first slave address is A0h and A1h, and the second slave address is A4h and A5h.

19. The electronic system according to any one of claims 15 to 18, wherein The second performance information includes a plurality of regions, a first region of the plurality of regions includes first performance information about a first resolution, and a second region of the plurality of regions includes information about a second resolution different from the first resolution.

20. The electronic system according to claim 19, wherein The first source device is configured to output a first content signal having the first resolution based on the first performance information, Wherein the second source device is configured to output a second content signal having the second resolution based on the second performance information, Wherein the second resolution is higher than the first resolution.

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