CN107615771B

CN107615771B - Electronic device and control method thereof

Info

Publication number: CN107615771B
Application number: CN201780001531.4A
Authority: CN
Inventors: 吴昇保
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2016-02-16
Filing date: 2017-01-09
Publication date: 2020-09-11
Anticipated expiration: 2037-01-09
Also published as: CN107615771A; KR102455479B1; KR20170096559A

Abstract

An electronic device is disclosed. An electronic device that receives content from an external device includes: a memory configured to include Extended Display Identification Data (EDID) information of a first HDMI version, EDID information of a second HDMI version, wherein the second HDMI version is an upgraded version of the first HDMI version, and at least one resolution information supportable in the electronic device in addition to the EDID information of the first HDMI version; an external interface configured to communicate with an external device; and a processor configured to: causing the EDID information of the second HDMI version not to be read by the external device, causing the EDID information of the first HDMI version among the EDID information to be read by the external device, and causing the at least one resolution information to be read by the external device.

Description

Electronic device and control method thereof

Technical Field

Aspects of example embodiments relate generally to an electronic device and a control method thereof, and for example, to an electronic device supporting an HDMI port and a control method thereof.

Background

With the increase of ultra High Definition (HD) level definition content beyond full HD resolution, a sync device equipped with an HDMI port supporting HDMI2.0 has been actively popularized. However, source devices (e.g., DVD players, set-top boxes, etc.) connected to the sync device typically cannot yet support HDMI 2.0.

Therefore, there may be a problem in that: in the case where a source device that does not support HDMI2.0 is connected to the HDMI port of the sink device that supports HDMI2.0, the source device cannot correctly recognize Extended Display Identification Data (EDID) that the source device reads from the sink device. The problem occurs because the HDMI2.0 sync device has two VSDBs, and in the process of the HDMI1.4 source device reading the EDID of the HD 2.0 sync device, the HDMI1.4 source device stores two VSDBs in one storage area, and the later read VSDB data is rewritten on the earlier read VSDB data. Therefore, previously read VSDB data is lost and cannot be read correctly.

Disclosure of Invention

[ problem ] to provide a method for producing a semiconductor device

An aspect of example embodiments relates to an electronic device and a control method thereof, in which the electronic device can provide an optimal UHD screen or HDR screen by simply connecting an HDMI cable even though a user does not manually set an HDMI version menu corresponding to an HDMI input port of a sync device.

Specifically, an aspect of the example embodiments is that even if a user does not manually set an HDMI menu corresponding to an HDMI input port of a sync device, VSDB data can be processed only by connecting an HDMI cable so that VSDB will not be lost regardless of supportable HDMI versions.

[ technical solution ] A

According to an example embodiment, there is provided an electronic device that provides contents from an external device, the electronic device including: a memory configured to include Extended Display Identification Data (EDID) information of a first HDMI version, EDID information of a second HDMI version, wherein the second HDMI version is an upgraded version of the first HDMI version, and at least one resolution information supportable in the electronic device in addition to the EDID information of the first HDMI version; an external interface configured to communicate with an external device; and a processor configured to cause the first HDMI version of EDID information and the at least one resolution information among the EDID information to be read by an external device, and to cause the second HDMI version of EDID information not to be read by the external device.

In response to a particular menu associated with the external interface being inactive, the processor may cause the EDID information of the second HDMI version to be unreadable by the external device, cause the EDID information of the first HDMI version of the EDID information to be read by the external device, and cause the at least one resolution information to be read by the external device regardless of whether the particular menu is active.

Here, the EDID information of the first HDMI version may be recorded in a first area of the memory, the EDID information of the second HDMI version may be recorded in a second area of the memory, and the at least one resolution information may be recorded in a third area of the memory.

The first and second regions of the memory may record Vendor Specific Data Blocks (VSDB) of HDMI version 1.4 and Hdmiforum (HF) -VSDB of HDMI version 2.0, respectively, and the third region may record EDID information other than the VSDB of HDMI version 1.4 and the HF-VSDB of HDMI version 2.0.

The at least one resolution information supportable in the electronic device may be set by a plurality of bits, wherein at least one bit may include resolution information additionally supportable in addition to the resolution information supportable by the first HDMI version, and at least one bit of the other bits may include color information additionally supportable in addition to the color information supportable by the first HDMI version.

In response to the specific menu being inactive and the content of the second HDMI version being input from the external device, the processor may automatically activate the specific menu or provide a UI for alerting the user to activate the specific menu.

In response to receiving Source Product Description (SPD) information from an external device that a particular bit is activated, the processor may automatically activate the particular menu or provide a UI for alerting a user to activate the particular menu.

Meanwhile, according to an example embodiment, an electronic device providing contents includes: an external interface configured to communicate with an external device, wherein the external device stores Extended Display Identification Data (EDID) information of a first HDMI version, EDID information of a second HDMI version, wherein the second HDMI version is an upgraded version of the first HDMI version, and at least one resolution information supportable in the external device in addition to the EDID information of the first HDMI version; and a processor configured to read the first HDMI version of EDID information and the at least one resolution information stored in the external device among the EDID information stored in the external device, not read the second HDMI version of EDID information, and provide contents supportable in the external device based on the read information.

Here, in response to a specific menu related to the external interface being inactive, the external device causes the EDID information of the second HDMI version to be unread by the electronic device, causes the EDID information of the first HDMI version to be read by the electronic device, and causes the at least one resolution information to be read by the electronic device regardless of whether the specific menu is active.

When the EDID information of the first HDMI version and the at least one resolution information are read by the electronic device, but the EDID information of the second HDMI version is not read by the electronic device, the processor may detect that the specific menu is not activated, and automatically activate the specific menu or transmit a control signal to the external device to provide a UI for alerting the user to activate the specific menu to the user.

According to an example embodiment, a method of controlling an electronic device, in which the electronic device stores Extended Display Identification Data (EDID) information of a first HDMI version, EDID information of a second HDMI version, wherein the second HDMI version is an upgraded version of the first HDMI version, and at least one resolution information supportable in the electronic device in addition to the EDID information of the first HDMI version, includes: when an event that an external device is connected to the external interface occurs, determining whether a specific menu is activated, and transmitting the at least one resolution information to the external device regardless of whether the specific menu is activated, and when the specific menu is not activated, causing the EDID information of the second HDMI version not to be read by the external device, causing the EDID information of the first HDMI version among the EDID information to be read by the external device.

The EDID information of the first HDMI version is recorded in a first area of a memory provided in the electronic device, the EDID information of the second HDMI version is recorded in a second area of the memory, and the at least one resolution information may be recorded in a third area of the memory.

Here, the first and second areas of the memory may record Vendor Specific Data Blocks (VSDB) of HDMI version 1.4 and HF-VSDB of HDMI version 2.0, respectively, and the third area of the memory may record the location of EDID information other than the VSDB of HDMI version 1.4 and the HF-VSDB of HDMI version 2.0.

The at least one resolution information supportable in the electronic device may be set by a plurality of bits, wherein at least one bit includes resolution information additionally supportable in the electronic device in addition to the resolution information supportable by the first HDMI version, and at least one bit of the other bits includes color information additionally supportable in addition to the color information supportable by the first HDMI version.

The method may further comprise: in response to the specific menu being inactive and an input of content of a second HDMI version being received from an external device, automatically activating the specific menu or providing a UI for alerting a user to activate the specific menu.

The method may further comprise: when Source Product Description (SPD) information in which a specific bit is activated is received from an external device, the specific menu is automatically activated or a UI for alerting a user to activate the specific menu is provided.

According to an example embodiment, a recording medium recorded with a program that executes a method of controlling an electronic device that stores Extended Display Identification Data (EDID) information of a first HDMI version, EDID information of a second HDMI version, wherein the second HDMI version is an upgraded version of the first HDMI version, and at least one resolution information supportable in the electronic device in addition to the EDID information of the first HDMI version, includes:

when an event that an external device is connected to the external interface occurs, determining whether a specific menu is activated, when the specific menu is not activated, causing the EDID information of the second HDMI version not to be read by the external device, and causing the EDID information of the first HDMI version among the EDID information to be read by the external device, and causing the at least one resolution information to be read by the external device regardless of whether the specific menu is activated.

[ PROBLEMS ] the present invention

As described above, according to various example embodiments, when a source device supporting the HDMI2.0 version is connected, even if a user does not manually set a menu for converting EDID information regarding the HDMI version of a TV, the user can view an optimal UHD screen or HDR screen only by connecting an HDMI cable.

Drawings

These and other features and aspects of the present disclosure will become more apparent and readily appreciated from the following detailed description taken in conjunction with the accompanying drawings in which like reference numerals identify like elements and wherein:

fig. 1 is a diagram showing an example configuration of an electronic system according to an example embodiment;

fig. 2 is a block diagram showing an example configuration of an electronic apparatus according to an example embodiment;

fig. 3 is a block diagram showing an example configuration of the electronic apparatus shown in fig. 2;

FIG. 4 is a block diagram illustrating an example configuration of an electronic device according to an example embodiment;

fig. 5a and 5b are diagrams showing example structures of a VSDB of HDMI version 1.4 and a VSDB of HDMI version 2.0 according to different HDMI standards;

fig. 6 is a diagram illustrating an example storage area in which additional information is recorded according to an example embodiment;

fig. 7 is a diagram illustrating an example menu for setting HDMI UHD colors according to an example embodiment;

FIGS. 8a and 8b are diagrams illustrating example SPD information according to example embodiments;

FIG. 9 is a diagram illustrating an example UI alert, according to an example embodiment;

fig. 10 is a flowchart illustrating an example method of controlling an electronic device according to an example embodiment.

[ best mode for carrying out the invention ]

Detailed Description

Hereinafter, example embodiments will be described in more detail with reference to the accompanying drawings.

Fig. 1 is a diagram illustrating an example configuration of an electronic system according to an example embodiment.

As shown in fig. 1, the content providing system 1000 includes a synchronization apparatus 100 'and a source apparatus 200'.

The source device 200 'provides content to the sync device 100'. For example, the source device 200 'may be implemented by various forms of electronic devices capable of providing content to the sync device 100' (such as a set-top box, a DVD player, a blu-ray disc player, a PC, a game console, etc.). The sync device 100 'may be implemented by various forms of electronic devices capable of outputting content received from a source device 200', such as, but not limited to, a network TV, a smart TV, an internet TV, a network TV, an Internet Protocol Television (IPTV), an electronic sign, a PC, and the like.

Specifically, the sync device 100' may be implemented by a device supporting a high-speed multimedia interface (HDMI). Accordingly, the sink device 200 'and the sync device 100' are equipped with an HDMI port and can communicate with each other through the port. For example, the sync device 100 'and the source device 200' may be configured with HDMI2.0 ports. For example, HDMI2.0 is a standard optimized for high-resolution environments known as 4K or ultra hd (uhd). The maximum bandwidth is increased to 18Gbps, and video with a resolution of up to 4096 × 2160(2160p), which is processed smoothly at 60Hz, can be transmitted. Further, in 2015, HDMI2.0 a was released, in which video with High Dynamic Range (HDR) supports rendering of clearer video images by improving contrast and color gamut. The HDMI2.0 standard herein includes the HDMI2.0 a standard.

For example, the source device 200 ' may provide corresponding content to the sync device 100 ' based on the EDID information received from the sync device 100 '. The EDID is a standard for transmitting display information from the sync device 100 '(display portion) to the source device 200' (host portion). The EDID herein is not used to define an interface signal such as a data channel (DDC), but defines a data format to enable the host part to read the display capability. EDID may include information about: manufacturing company name, manufacturing date/year, product type, EDID version, resolution and color coordinates of the product, type of phosphor and type of filter, timing, screen size, brightness, pixels, etc.

For example, in the HDMI standard, it is implemented that resolution information and color information of the sync device 100 ' are stored through a Vendor Specific Data Block (VSDB), and the source device 200 ' extracts the VSDB information and transmits corresponding contents to the sync device 100 '. However, according to an example embodiment, the sync device 100' may store additional color information and resolution information in a memory other than a Vendor Specific Data Block (VSDB) defining the resolution information and the color information in the HDMI standard. Then, the source device 200' may read the stored information, and receive and output corresponding content.

Fig. 2 is a block diagram showing an example configuration of an electronic apparatus according to an example embodiment.

As shown in fig. 2, the electronic device 100 includes: memory 110, external interface 120, and processor 130. For example, the electronic device may be implemented by the synchronization device 100' shown in fig. 1.

The memory 110 may include: for example, Extended Display Identification Data (EDID) information of the first HDMI version, EDID information of the second HDMI version, and at least one resolution information that is additionally supportable in the electronic device 100 in addition to the EDID information of the first HDIM version. For example, the second HDMI version may be an upgraded version of the first HDMI version.

For example, the memory 110 may include: a first region in which EDID information of a first HDMI version is recorded, a second region in which EDID information of a second HDMI version (which is an upgraded version of the first HDMI version) is recorded, and a third region in which additional resolution information that is supportable in the electronic device 100 in addition to the resolution information and color information that the first HDIM version supports is recorded. For example, the first and second areas may be implemented by a Vendor Specific Data Block (VSDB) (hereinafter, VSDB1.4) (refer to fig. 5a) of HDMI version 1.4 and an hdmiform (hf) -VSDB (hereinafter, VSDB 2.0) (refer to fig. 5b) of HDMI version 2.0, respectively, defined in the HDMI standard. Here, the specification information supportable in the third area may coincide with the specification information stored in the second area.

Here, an information block called a Vendor Specific Data Block (VSDB) (for example, refer to VSDB1.4 shown in fig. 5a), which is classified using IEEE code, includes CEC physical address information 510, color bit information 520, maximum TMDS frequency information 530, audio/video delay information, etc. Here, the color bit information 520 may represent, for example, color information, and the maximum Transition Minimized Differential Signaling (TMDS) frequency information may represent, for example, resolution information, because the higher the maximum TMDS clock frequency, the larger the amount of data that can be transmitted, and thus the high resolution data can be transmitted. Based on the VSDB including such information, the external device 200 may determine which signal format the electronic device 100 can receive and output through the HDMI port, and transmit content corresponding to the signal format.

The third area of the memory 110 may be implemented by a plurality of bits, but is not limited to this case, and may be implemented by one bit or more than 3 bits according to the stored information. As an example, in the case where the third region is implemented by two bits, one bit includes information additionally supportable in the electronic device 100 in addition to the resolution information supportable by HDMI1.4, and the other bit includes color information additionally supportable in addition to the resolution information supportable by HDMI 1.4. Here, including additional supportable information would cover the following two cases: the case of including information supportable by HDMI1.4 and additionally supportable information and the case of including only additionally supportable information without including additional information supportable by HDMI 1.4. The former or latter case may be implemented according to different example embodiments. Further, including additional supportable information may also include the following: a case where the specification information supportable in the third area can be identical to the specification information stored in the second area.

The third region may be a VSDB outer region as described above. As an example, as shown in fig. 6, the third area may be a portion in which ID serial numbers are described according to a different HDMI standard among the allocated areas. For example, the third region may be set by the second bit value 611 and the third bit value 612 of the ODh region 610 among the regions allocated to describe the ID sequence number, but is not limited to this one example. Other reserved regions besides the VSDB may also be used as the third region.

For example, the second bit of the third region indicates that the TMDS transmission data frequency of the HDMI is up to 3GHz or 6 GHz. For example, a value of "1" may indicate that the maximum frequency of TMDS transmission data is 6GHz, a value of "0" may indicate that the maximum frequency of TMDS transmission data is 3GHz, or conversely, a value of "1" may indicate 3GHz, and a value of "0" may indicate 6 GHz.

Here, if the maximum frequency of the TDMS transmission data is 3GHz, it means that resolutions of 480p/720p/1080i @60Hz/50Hz, 1080p @24Hz/25Hz/30Hz/60Hz 8 bits to 12 bits, 4K 420@60Hz8 bits, 4K 444/422@24/25/30Hz 8 bits can be processed. Further, if the maximum frequency of the TDMS transmission data is 6GHz, it means that resolutions of 480p/720p/1080i @60Hz/50Hz, 1080p @24Hz/25Hz/30Hz/60Hz 8 bits to 12 bits, 4K 420@60Hz8 bits, 4K 444/422@24/25/30Hz 8 bits to 12 bits, and 4K 444@60 Hz8 bits can be processed.

The third bit of the third area indicates whether the color gamut supported by the HDMI terminal is BT2020 or BT 709. For example, a value of "1" may indicate that the supportable gamut is BT2020 and a value of "0" may indicate that the supportable gamut is BT709, or conversely, a value of "1" may indicate BT709 and a value of "0" may be BT 2020. Meanwhile, the data bit depth is automatically defined according to different color gamuts. Up to 10 bits are supportable if the color gamut is BT2020, and up to 8 bits are supportable if the color gamut is BT 709.

Meanwhile, the memory 110 may include one type of storage medium among flash memory type, ROM (e.g., EEPROM, etc.), RAM, hard disk type, multimedia card micro type, card type (e.g., SD or XD memory, etc.).

The external interface 120 communicates with an external device (not shown). The external device (not shown) here may be implemented by the source device 200' shown in fig. 1. Hereinafter, the case where the external device is implemented by the source device 200' shown in fig. 1 is preset and described as an example.

The external interface 120 may be implemented by an HDMI port capable of receiving high-resolution video and multi-channel digital audio through one cable. Specifically, the external interface 120 includes a Transition Minimized Differential Signaling (TMDS) channel that receives a video signal and an audio signal, a Display Data Channel (DDC) that receives device information and information related to video or audio, such as enhanced extended display identification data (E-EDID), from the connected external device 200 ', and a Consumer Electronics Control (CEC) that can transmit a control signal to the external device 200'.

Specifically, the external interface 120 may be implemented by an HDMI2.0 input port supporting the HDMI2.0 standard. Here, each version of HDMI port has downward compatibility. Accordingly, it is possible to connect a source device of a high level standard to an output device of a low level standard, or to connect a source device of a low level standard to an output device of a high level standard. However, in the latter case, both devices can use only low standard functions. As an example, even if the electronic device 100 (e.g., TV) supports HDMI2.0, if the external device 200' (e.g., blu-ray player) is HDMI1.4 standard, only the HDMI1.4 function can be used.

The processor 130 controls the overall operation of the electronic device 100. Here, the processor 130 may include various processing circuits such as, for example and without limitation, one or more of a Central Processing Unit (CPU), a controller, an Application Processor (AP), a Communication Processor (CP), an ARM processor, and the like.

The processor 130 causes the second version of the EDID information not to be read by the external device 200 'according to a predetermined event, but causes only the first version of the EDID information and the at least one resolution information among the EDID information stored in the memory 100 to be read by the external device 200'. Here, as described above, the EDID information of the first HDMI version may be recorded in the first area of the memory, the EDID information of the second HDMI version may be recorded in the second area of the memory, and the at least one resolution information may be recorded in the third area of the memory.

In the above case, the processor 130 controls the data stored in the second area not to be read by the external device 200 'and the data stored in the first and third areas among the data stored in the memory 110 to be read by the external device 200' according to a predetermined event. Here, the predetermined event may be an event that the external device 200' is connected to the external interface 120. For example, it may be that the HDMI cable port of the external device 200' is connected to the external interface 120 event implemented by the HDMI port, but is not limited to this one example. As another example, according to implementation, it may be an event that each port is selected through a menu after connecting HDMI ports.

However, in order to implement this service, the external device 200' should know the location of the third area and what type of data is recorded in the third area in advance. In other words, according to the HDMI standard, the respective information is not recorded in the third area, and therefore, the external device 200' should know in advance that the resolution information and the color information are recorded in the third area. For example, if the "ID manufacturing name" indicates a specific manufacturing company, the external device 200' may recognize that the specific manufacturing company records resolution information in the third area, extract a value recorded in the third area, and transmit corresponding content to the electronic device 100 based on the extracted value. Further, in the third area, the portion describing the ID serial number among the allocated areas may become reserved areas according to different HDMI standards, and if the ID serial number represents a specific manufacturing company, the external device 200' may check the values recorded in the respective reserved areas and obtain resolution information and color information.

When the specific menu is active (meaning that the specific menu is set to be on), the processor 130 may control data recorded in the first area and the second area to be read by the external device 200 ', and, when the specific menu is inactive (meaning that the specific menu is set to be off), the processor 130 may control data recorded in the second area not to be read by the external device 200' but only data recorded in the first area to be read by the source device. Here, the specific menu may be a menu 710 related to HDMI UHD color setting as shown in fig. 7, and may be implemented to set on/off according to each HDMI port. However, the third area is an area other than the VSDB, that is, an area that can be read by the external device 200' according to a different HDMI standard regardless of whether or not each menu is activated.

Accordingly, when the respective menus are deactivated, only the data recorded in the first area and the third area are read by the external device 200 ', and the data recorded in the second area becomes a state in which the data recorded in the second area can not be read by the external device 200'.

In connection with the above features, the HDMI2.0 sync device having the respective menus that are not active is put on the market, and the user can set whether to activate the menus according to the specifications of the external device, in other words, the user can set the open/close state of the menus. The reason is as follows.

According to the HDMI procedure, if the sync device has more than two VSDBs, that is, if the sync device has VSDB of HDMI1.4 version (hereinafter, VSDB1.4) and VSDB of HDMI2.0 (hereinafter, VSDB 2.0), the source device can clearly distinguish and recognize the respective information by checking IEEE code of each VSDB and individually reading the codes.

However, the HDMI source device currently put on the market is configured to continuously read VSDB1.4 and then VSDB 2.0. Therefore, when the HDMI1.4 source device is connected to the HDMI2.0 sink device, VSDB2.0 is rewritten on VSDB1.4 read previously, and VSDB1.4 data is finally corrupted. For example, bit number four (fig. 5a) of the sixth byte of VSDB1.4 is bit information indicating whether the TV supports 30 bits, but VSDB2.0 (fig. 5b) is rewritten on the VSDB1.4 information, and Rsvd (0) of bit number four of the sixth byte in VSDB2.0 is stored. Therefore, each bit information of VSDB1.4 is replaced by each individual bit information of VSDB2.0 existing in the same area.

Accordingly, the HDMI source device uses the damaged VSDB information to determine which function the connected sync device provides. Since the source device determines the HDMI standard supported by the sink device using the corrupted VSDB information, the source device outputs a signal based on the erroneous TV specification information. Due to this problem, there arises a problem that sound and a specific resolution are not output or an erroneous color bit is set and output, or the like. This is because the source device determines that the connected sync device cannot support audio based on the damaged VSDB information or the sync device cannot support high resolution because the maximum TMDS frequency is low.

In other words, the above-described problem occurs because VSDB1.4 and VSDB2.0 use different IEEE codes from each other (e.g., IEEE OUI in VSDB2.0 is 0xC4, Ox5D, and 0xD8, and IEEE OUI in VSDB1.4 is 0x03, 0x0C, and 0x00), but the existing HDMI1.4 source device is not designed to distinguish different HDMI VSDBs.

To solve the above problem, HDMI2.0 is basically designed to provide only VSDB1.4 information, and provide VSDB2.0 for a port to which an HDMI2.0 source device is connected if a user activates the above-mentioned specific menu. Therefore, since the HDMI2.0 source device is designed to distinguish VSDB1.4 and VSDB2.0 and simultaneously process VSDB1.4 and VSDB2.0, it is designed to perform conversion only for the HDMI input port to which the HDMI2.0 source device is connected using a manual setup menu. Accordingly, since the respective menus are deactivated when the HDMI1.4 source device is connected, only the VSDB1.4 information is transmitted to the HDMI1.4 source device, thereby preventing the above-described problems.

Thus, according to an example embodiment, the electronic device 100 is also configured to employ a general implementation format of the HDMI2.0 sync device, wherein the general implementation format causes the VSDB2.0 data to be unread by the external device 200' if a particular menu is deactivated.

Specifically, if the respective menu is activated, processor 130 may cause all of VSDB1.4 information and VSDB2.0 to be transmitted to the source device, and if the respective menu is deactivated, processor 130 may cause only VSDB1.4 to be read by external device 200'.

In this regard, according to an example embodiment, memory 120 may be separately provided with a first EEPROM storing all of VSDB1.4 and VSDB2.0 and a second EEPROM storing only VSDB 1.4. In this case, if the respective menu is activated, the processor 130 may control the external device 200 'to read the first EEPROM data, and if the respective menu is deactivated, the processor 130 may control the external device' to read the second EEPROM data.

According to another example embodiment, the processor 130 may change the data recorded in the memory 120 and may change the data recorded in the EEPROM. Specifically, processor 130 may store VSDB1.4 and VSDB2.0 in EEPROM if the respective menu is activated, and may store VSDB1.4 in EEPROM if the respective menu is deactivated.

Meanwhile, the processor 130 may automatically convert the respective menus to be activated or provide a UI for warning (or recommending) the user to convert the respective menus to be activated according to a control performed in the source device 200 when the respective menus are not activated, and a signal related to the second version (e.g., an HDR signal or a 2160p4:4: 460Hz signal) is input from the source device 200. The reason is that, even if the respective menus are inactive, that is, even if the source device 200 reads only the VSDB1.4 except for the VSDB2.0, the HDMI2.0 device according to the embodiment of the present disclosure means the sync device 100 in the case where the source device 200 reads the resolution information and the color information of the third area together. Accordingly, the source device 200 may transmit a control signal for activating the respective menus to the sync device 100 or transmit a control signal to provide a UI for warning a user to convert the respective menus into activation.

Further, the processor 130 may automatically convert the respective menus to be active or provide a UI for warning the user to convert the respective menus to be active when the respective menus are inactive, but a signal related to the second version (e.g., HDR signal) is input from the source device 200. The reason is that although the respective menus are inactive, i.e., although only the VSDB1.4 except for the VSDB2.0 is transmitted to the source device 200, the fact that a signal related to the second version (e.g., an HDR signal or a 2160p4:4: 460Hz signal), i.e., a signal related to the HDMI2.0, is input from the source device 200 means that the source device 200 has read the resolution information and the color information of the third area, in other words, the sync device 100 is an HDMI2.0 device according to an example embodiment. Accordingly, the processor 130 may automatically convert the respective menu into activation or provide a UI for alerting a user to convert the respective menu into activation.

Further, when Source Product Description (SPD) information is received from the external device 200', in which a specific bit is activated, the processor 130 may provide a UI for alerting a user to activate various menus. Here, the Source Product Description (SPD) Infoframe (Infoframe) (fig. 8a, 800) includes 25 bytes to provide the synchronization apparatus with detailed information of the source product.

For example, according to fig. 8b, the audio content bit of the DB Wise Ver 3.0 function in the 24 th byte and the reserved bit (821-1) transmitting the backlight control bit may be used as the specific bit, but is not limited to this case. In other words, as shown in fig. 8b, when the processor 130 receives Source Product Description (SPD) information that a specific bit (821-1) is activated to "1", the processor 130 may detect the external device 200' output content based on VSDB2.0 and VSDB 1.4. In this case, if the respective menus have been set to be closed, a UI for warning the user to change the respective menu settings to be open may be provided. Fig. 9 illustrates a case where a UI warning (910) is provided according to various example embodiments described above.

Meanwhile, according to another example embodiment, the external device 200 ' may not be able to read the data of the third region, but if the external device 200 ' reads the information of the fourth region (which is information supporting the HDR content) through the HDMI2.0 a, the external device 200 ' determines that the HDMI2.0 can be supported. If the respective menus are not activated, the external device 200' may transmit a control signal to the electronic device 100 to provide a UI for warning a user of the conversion of the respective menus into activation, or transmit a control signal to the electronic device 100 for the conversion of the respective menus into activation.

Meanwhile, with respect to the interface 120 of the electronic device 100, in a case where the format supportable by the HDMI port is limited to VSDB1.4 and only VSDB1.4 is recorded in the memory 100 according to the example embodiment, if the respective menus are activated to be opened, the processor 130 may change the input settings and the input specification of the HDMI port so that the HDMI port receives the specification described in HDMI2.0VSDB. In other words, the processor 130 may add the VSDB2.0 standard information to the VSDB1.4 information using 2 bits and change the input setting and the input specification of the HDMI port accordingly. Therefore, even though the electronic device 100 stores only VSDB1.4, 2160p/60Hz 4:4:4 (resolution), 10 bits (data bit depth), and BT.2020 (color gamut) signals of VSDB2.0 may be received because the electronic device 100 activates the respective menus to be turned on.

Fig. 3 is a block diagram illustrating an example configuration of the electronic device illustrated in fig. 2.

According to fig. 3, the electronic device 100 comprises: memory 110, external interface 120, processor 130, receiver 140, display 150, audio output (e.g., including audio output circuitry) 160, and user interface 170. In the configuration shown in fig. 3, description of a portion of the configuration overlapping with the configuration shown in fig. 2 will be omitted.

The external interface 120 may include various cable/wireless interfaces capable of being linked with external devices, in addition to the HDMI port described above. For example, the external interface 120 may include a cable interface, such as a USB port, a Composite Video Blanking Sync (CVBS) port, a component port, an S-video port (analog), a Digital Visual Interface (DVI) port, and a wireless interface using a communication protocol, such as wireless lan (wlan), wireless fidelity (Wi-Fi) direct, bluetooth, radio Frequency Identification (FID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, digital living network alliance protocol (DLNA), and the like.

The memory 110 may store a program to process and control each signal within the processor 130, and may store an image, a sound signal, and a data signal processed as signals. Further, the memory 110 may serve as a temporary memory for image signals, sound signals, or data signals input from the external interface 120 or from the network interface 143.

Receiver 140 may include various circuitry such as, for example and without limitation, at least one tuner 141, a demodulator 142, and a network interface 143. In some cases, receiver 140 may be equipped with tuner 141 and demodulator 142 but may not include network interface 143, or with network interface 143 but not tuner 141 and demodulator 142. The tuner 141 receives a Radio Frequency (RF) broadcast signal by tuning each channel selected by a user or a pre-stored channel from among RF broadcast signals received through an antenna. The demodulator 142 may receive and demodulate the digital IF signal (DIF) converted in the tuner 141 and may decode a channel.

The network interface 143 provides an interface for connecting the electronic device 100 to a wired/wireless network including an internet network using various communication interface circuits. The network interface unit 143 may be equipped with a port such as an ethernet port to access a wired network, and may use a communication standard such as wireless lan (wlan), wireless fidelity (Wi-Fi), wireless bandwidth (Wibro), worldwide interoperability for microwave access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like to access a wireless network.

The display 150 converts the image signal, the data signal processed in the processor 130, the OSD signal or the image signal received from the external interface 120, the data signal, etc. into R, G, B signals, respectively, and generates an operation signal. The display 150 may be implemented by a PDP, an LCD, an OLED, a flexible display, a 3D display, a touch screen, or the like.

The audio output unit 160 includes various audio output circuits that receive the audio signal processed in the processor 130 (such as a stereo signal, a 3.1-channel signal, or a 5.1-channel signal) and outputs a signal as audio. The audio output unit 160 may be implemented by various forms of speakers.

The user interface 170 transmits commands input by the user to the processor 130 or may transmit signals from the processor 130 to the user. For example, the user interface 170 may be implemented in the form of communicating with a remote control device (not shown) or in the form of a keypad equipped in the electronic apparatus 100 according to various communication methods, such as an RF communication method, an IR communication method, and the like.

Fig. 4 is a block diagram showing an example configuration of an electronic apparatus according to an example embodiment.

According to fig. 4, the external device 200 includes: memory 210, interface 220, and processor 230. Here, the external device 200 may be implemented by the source device 200' shown in fig. 1.

The memory 210 temporarily or permanently stores information received from the electronic device 100.

The interface 220 includes various communication circuits to communicate with the electronic device 100. Here, the electronic device 100 may be implemented by the sync device 100' shown in fig. 1.

The external interface 220 may be implemented by being able to transmit high definition video and multi-channel digital audio through the HDMI port through the electronic device 100 via one cable.

The processor 230 does not read the EDID information of the second HDMI version, but reads the EDID information of the first HDMI version and at least one resolution information among the EDID information stored in the electronic device 100 according to a preset event, and provides contents supportable in the electronic device 100 to the electronic device 100 based on the read information.

Specifically, the processor 230 reads Extended Display Identification Data (EDID) information of the first HDMI version in the memory 110 of the electronic device 100 and resolution information and color information supportable in the electronic device 100 recorded in the third area according to a preset event. Then, based on the respective information, the processor 230 determines a final signal format supportable in the electronic device 100. Here, the preset event may be an event in which the interface 220 is connected to the electronic device 100. For example, the preset event may be an event that the HDMI cable port of the electronic device 100 is connected to the interface 220 implemented by the HDMI port, but is not limited to this one embodiment. As another example, in some example embodiments, the preset event may be an event of selecting the interface 220 implemented by the HDMI port through a menu provided in the electronic device 100 after the HMDI port is connected.

For example, since the EDID information of the HDMI1.4 version is recorded in the first area and the resolution information and the color information corresponding to the HDMI2.0 version are recorded in the third area, the processor 130 may determine that the electronic device 100 can support not only the HDMI1.4 version (2160p/60Hz 4:2:0,8 bits, bt.709) but also the HDMI2.0 version (2160p/60Hz 4:4:4,10 bits, bt.2020).

As described above, the external device 200 determines that the HDMI2.0 version (i.e., 2160p/60Hz 4:4:4 (resolution), 10 bits (data bit depth), and bt.2020 (color gamut)) is supportable, and outputs a signal having the specification of the electronic device 100 based on the determined supportable version to achieve the supportable best resolution quality. However, in order to implement this service, the external device 200 should also be implemented by a source device supporting the HDMI version 2.0.

When the EDID information of the first HDMI version and the at least one resolution information are read by the electronic device 100, but the EDID information of the second HDMI version is not read by the electronic device 100, the processor 230 may detect that the respective menus in the electronic device 100 are not activated, and then transmit a control signal for automatically activating the respective menus or a control signal for providing a UI for warning a user to activate a specific menu to the electronic device 100. In other words, in a case where the VSDB1.4 information in the first area and the resolution information and the color information in the third area are read together, the processor 230 may determine that the electronic device 100 is an HDMI2.0 device and the respective menus need to be activated.

Further, in the case where the processor 230 transmits corresponding contents to the electronic device 100 based on the VSDB1.4 information and the two-bit information of the third area read by the electronic device 100, the processor 230 may inform that the currently transmitted signal of the electronic device 100 is transmitted using a higher-level specification than the VSDB1.4 (i.e., a specification shown in the actual EDID information) by assigning values to some bits in an SPD (source product description) information box. In this case, the electronic device 100 may automatically activate the HDMI UHD color menu to open or provide a UI suggesting that the menu be set to open when the respective signals are transmitted.

The electronic device 100 according to example embodiments may include a memory configured to include Extended Display Identification Data (EDID) information of a first HDMI version, EDID information of a second HDMI version, wherein the second HDMI version is an upgraded version of the first HDMI version, and at least one resolution information supportable in the electronic device in addition to the EDID information of the first HDMI version. Here, the EDID information of the first HDMI version may be recorded in a first area of the memory, the EDID information of the second HDMI version may be recorded in a second area of the memory, and the at least one resolution information may be recorded in a third area of the memory.

According to the flowchart shown in fig. 10, when an event that an external device is connected to an external interface occurs (S1010: Y), the electronic device determines whether a menu related to the interface is activated. If the respective menus are inactive (S1020: Y), the electronic device causes data recorded in the second area not to be read by the external device but only data recorded in the first area among the EDID information stored in the memory to be read by the external device, and transmits data recorded in the third area to the external device regardless of whether the respective menus are active.

Further, if the respective menus are activated (S1020: N), the electronic device causes all data recorded in the first and second areas to be read by the external device, and causes data recorded in the third area to be read by the external device regardless of whether the respective menus are activated.

Here, the first and second areas may record Vendor Specific Data Blocks (VSDB) of HDMI version 1.4 and HF-VSDB of HDMI version 2.0, respectively, and the third area of the memory records EDID information except for the VSDB of HDMI version 1.4 and the HF-VSDB of HDMI version 2.0.

The third region may be set by at least one bit. For example, in the case where the third region is set by two bits, one bit may include resolution information that is additionally supportable in addition to the resolution information supportable by the HDMI1.4 version, and the other bit may include color information that is additionally supportable in the electronic device in addition to the color information supportable by the HDMI1.4 version.

The method may further include automatically activating the specific menu or providing a UI for alerting the user to activate the specific menu to the user when the specific menu is inactive but an input of the second version of the content is received from the external device.

Further, the method may further include: when Source Product Description (SPD) information in which a specific bit is activated is received from an external device, a specific menu is automatically activated or a UI for warning a user of the activation of the specific menu is provided to the user.

Meanwhile, the electronic device may be implemented by a sync device supporting the second version, and the external device may be implemented by a source device supporting the second version.

As described above, according to various exemplary embodiments, even if a user does not manually set a menu to change EDID information corresponding to an HDMI version, VSDB data can be processed only by connecting an HDMI cable so that the VSDB data will not be lost regardless of supportable versions. Specifically, even if the HDMI1.4 source device or the HDMI2.0 source device is connected to the HDMI2.0 sync device, the VSDB data within the EDID data can be appropriately detected, so that an error due to a difference between different HDMI versions can be prevented. That is, even if the user does not manually change the EDID setting corresponding to HDMI2.0, if the HDMI2.0 source device is connected, information of another area (e.g., a third area) having the same content as the VSDB content corresponding to HDMI2.0 can be read. Therefore, the same information as that provided in the case where the user manually changes the menu to the HDMI2.0 EDID setting is read. Accordingly, the HDMI2.0 source device can read the first region (i.e., EDID region for HDMI 1.4), and can provide an optimal UHD screen or HDR screen even if a sync device whose manual setting is set not to read the second region is connected.

Further, a guidance for appropriately setting an HDMI UHD color menu, which is not easily found by a user, according to a configuration instruction of an electronic device is provided. Further, the HDMI UHD color menu is automatically activated based on a configuration instruction of the electronic device, such that a user does not need to manually set the HDMI UHD color menu.

Meanwhile, the methods described in various exemplary embodiments may also be implemented only by software/hardware upgrade of a conventional electronic device.

Further, according to an example embodiment, a non-transitory computer readable medium may be provided in which a program sequentially executes the control method.

A non-transitory computer readable medium is a medium that stores data semi-permanently and can be read by a device. In particular, the various applications and programs described above may be stored and provided by a non-transitory reading device such as a CD, DVD, hard disk, blu-ray, optical disk, USB, memory card, ROM, and the like.

The foregoing example embodiments and advantages are merely examples and are not to be construed as limiting the present disclosure. The present teachings can be readily applied to other types of apparatuses. Furthermore, the description of the example embodiments is intended to be illustrative, and not to limit the scope of the claims, and many alternatives, modifications, and variations will be apparent to those skilled in the art.

Claims

1. An electronic device configured to receive content from an external device, the electronic device comprising:

a memory configured to store first Extended Display Identification Data (EDID) information for a first version of High Definition Multimedia Interface (HDMI), second EDID information for a second version of HDMI, and resolution information for the second version of HDMI, wherein the second version of HDMI is an upgraded version of the first version of HDMI;

an external interface configured to communicate with the external device; and

a processor configured to:

determining whether a setting related to communication with an external device via the HDMI port is a first setting or a second setting different from the first setting;

controlling reading of the first EDID information and the resolution information by the external device based on a setting regarding communication with the external device via the HDMI port being a first setting;

controlling, based on a setting relating to communication with the external device via the HDMI port being a second setting, reading of the first EDID information, the second EDID information, and the resolution information by the external device; and is

Content is received from an external device through the HDMI port.

2. The electronic device of claim 1, wherein first EDID information is recorded in a first area of the memory, second EDID information is recorded in a second area of the memory, and resolution information is recorded in a third area of the memory.

3. The electronic device of claim 2, wherein a vendor-specific data block, VSDB, version HDMI1.4 is stored in a first region of the memory, an HDMI Forum HF-VSDB, version HDMI2.0 is stored in a second region of the memory; and EDID information other than the HDMI1.4 version of VSDB and the HDMI2.0 version of HF-VSDB is stored in the third region.

4. The electronic device of any one of claim 1 through claim 3, wherein the resolution information comprises a plurality of bits, wherein at least one bit comprises supportable resolution information in addition to the first version of HDMI supportable resolution information, and at least one bit among the other bits comprises supportable color information in addition to the first version of HDMI supportable color information.

5. The electronic device of claim 1, wherein the processor is configured to: automatically activating a specific menu or providing a UI to a user for alerting the user to activate the specific menu in response to receiving Source Product Description (SPD) information from the external device that a predetermined bit is activated.

6. An electronic device that provides content, the electronic device comprising:

a High Definition Multimedia Interface (HDMI) port configured to communicate with an external device, wherein the external device stores first Extended Display Identification Data (EDID) information for a first version of HDMI, second EDID information for a second version of HDMI, and third information, wherein the second version of HDMI is an upgraded version of the first version of HDMI; and

a processor configured to:

obtaining identification information of an external device;

recognizing that the third information includes resolution information for the second version of HDMI based on the identification information;

providing the content to the external device based on the third information in response to obtaining the first EDID information and the third information from the external device; and is

In response to obtaining the first EDID information, the second EDID information, and the third information from the external device, the content is provided to the external device based on at least one of the second EDID information and the third information.

7. A method of controlling an electronic device, wherein the electronic device stores first Extended Display Identification Data (EDID) information for a first version of High Definition Multimedia Interface (HDMI), second EDID information for a second version of HDMI, and resolution information for the second version of HDMI in a memory, wherein the second version of HDMI is an upgraded version of the first version of HDMI, the method comprising:

Content is received from an external device through the HDMI port.

8. The method of claim 7, wherein the first EDID information is recorded in a first area of the memory of the electronic device, the second EDID information is recorded in a second area of the memory, and the resolution information is recorded in a third area of the memory.

9. The method of claim 8, wherein a first region of the memory stores a vendor specific data block, VSDB, version HDMI1.4, and a second region of the memory stores an HF-VSDB, version HDMI 2.0; and

the third region of the memory stores EDID information except for the HDMI version 1.4 VSDB and HDMI version 2.0 HF-VSDB.

10. The method of claim 7, wherein the resolution information comprises a plurality of bits, wherein at least one bit comprises resolution information supportable in addition to the first version supportable resolution information in the electronic device, and at least one bit of the other bits comprises color information supportable in addition to the first version supportable color information.