CN204131610U - A kind of HDMI (High Definition Multimedia Interface) HDMI dual display - Google Patents
A kind of HDMI (High Definition Multimedia Interface) HDMI dual display Download PDFInfo
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- CN204131610U CN204131610U CN201420482437.9U CN201420482437U CN204131610U CN 204131610 U CN204131610 U CN 204131610U CN 201420482437 U CN201420482437 U CN 201420482437U CN 204131610 U CN204131610 U CN 204131610U
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Abstract
The utility model discloses a kind of HDMI (High Definition Multimedia Interface) HDMI dual display, this dual display comprises: the first chip, the second chip be connected with the first chip; First chip receives HDMI signal by HDMI input interface, and exports to the first display device by HDMI output interface after process; And/or, the audio and video frequency signal of HDMI signal is separated by the first chip, vision signal is converted to LVDS vision signal, audio signal converts I2S audio signal to, and by LVDS output interface, LVDS vision signal is exported to the second chip, by I2S output interface, I2S audio signal is exported to the second chip; Second chip reception LVDS vision signal and the integration of I2S audio signal convert HDMI signal to and export to the second display device.This dual display can realize two HDMI equipment displays, meets two display demands of user, promotes Consumer's Experience.
Description
Technical field
The utility model relates to HDMI technical field, is specifically related to a kind of HDMI (High Definition Multimedia Interface) HDMI dual display.
Background technology
At present, HDMI (High Definition Multimedia Interface) HDMI technology is day by day ripe, based on HDMI (High Definition Multimedia Interface, be called for short HDMI) high definition wear-type display product also get more and more, but wear-type display product of the prior art is when carrying out output display, is all only have single display function.Namely from the input of HDMI signal and process, high definition head-mounted display apparatus is then outputted to.This single, that display mode that is that lack interactivity more and more can not meet user user demand.
Utility model content
The utility model provides a kind of HDMI (High Definition Multimedia Interface) HDMI dual display and lacks interactivity to solve HDMI equipment single display in prior art, causes the problem of poor user experience.
According to an aspect of the present utility model, provide a kind of HDMI (High Definition Multimedia Interface) HDMI dual display, this dual display comprises:
First chip, the second chip be connected with the first chip;
First chip comprises HDMI input interface, HDMI output interface, Low Voltage Differential Signal LVDS output interface and integrated circuit built-in audio I2S output interface;
First chip receives the HDMI audio-video signal of input by HDMI input interface, and exports to the first display device display by after the process of HDMI audio-video signal by HDMI output interface;
And/or
First chip, processes HDMI audio-video signal, and the vision signal of the LVDS form obtained after process is exported to the second chip by LVDS output interface; And the audio signal of the I2S form obtained after process is exported to the second chip by I2S output interface;
Second chip comprises: LVDS input interface, I2S input interface and HDMI output interface;
Second chip receives the LVDS vision signal of the first chip transmission by LVDS input interface, the I2S audio signal of the first chip transmission is received by I2S input interface, and LVDS vision signal and I2S audio signal are integrated, export to the second display device display by HDMI output interface after converting HDMI signal to.
Alternatively, the first chip is SOC (system on a chip) SoC chip, has decoding unit, processing unit and converting unit;
The HDMI audio-video signal of decoding unit to input is decoded and decoded HDMI audio-video signal is exported to processing unit;
Processing unit, the HDMI audio-video signal that receipt decoding unit sends also is sent to the first display device display after processing HDMI audio-video signal; And/or processing unit exports decoded HDMI signal to converting unit;
Converting unit, receives the HDMI audio-video signal that processing unit sends, and vision signal is separated and converts the vision signal of LVDS form to, exporting to LVDS output interface; Audio signal to be separated and audio signal audio signal being converted to I2S form exports to I2S output interface.
Alternatively, dual display also comprises: key-press module;
Key-press module is connected with the first chip, for receiving the key-press input of user, the first chip is made to control both to show between the first display device and the second display device according to the key-press input of user, the switching of neither display or the display of one of the first display device and the second display device.
Alternatively, before LVDS vision signal and I2S audio signal are sent to the second chip by the first chip, also for:
Send enable signal to the second chip, after the second chip is opened, send initializing signal to the second chip, initialization second chip.
Alternatively, this dual display also comprises two LED, and the color of these two LED can be different.
Alternatively, the first display device is the TV supporting that HDMI audio-video signal exports, and the second display device is head mounted display;
LED and key-press module coordinate, and control both to show between TV and head mounted display, the switching of neither display or the display of one of TV and head mounted display.
By this HDMI dual display of the present utility model, shown by display devices such as TVs while can be implemented in head mounted display display, for user provides multiple display to select, meet the demand of the multi-display equipment display of user.Such as, this HDMI dual display of the present utility model is applicable to wear-type field, can allows the user of display of wear-type, enjoy that wear-type movie theatre brings view and admire impression while, need to be switched to large scale television-viewing according to use.The impression of wear-type movie theatre is confined to head space, and large-screen HDTV (High-Definition Television) is then another kind of visual experience.Allow user oneself can select thus obtain different visual experiences, improve user's experience.
Accompanying drawing explanation
Fig. 1 is a kind of HDMI (High Definition Multimedia Interface) HDMI dual display block diagram that the utility model embodiment provides;
Fig. 2 is the schematic diagram of a kind of HDMI (High Definition Multimedia Interface) HDMI dual display that the utility model embodiment provides;
Fig. 3 is a kind of HDMI (High Definition Multimedia Interface) HDMI dual display circuit diagram that the utility model embodiment provides;
Fig. 4 is the work schedule schematic diagram of a kind of HDMI (High Definition Multimedia Interface) HDMI dual display second chip that the utility model embodiment provides;
Fig. 5 is that a kind of HDMI (High Definition Multimedia Interface) HDMI dual display display that the utility model embodiment provides switches schematic diagram;
Fig. 6 is the two display packing flow chart of a kind of HDMI (High Definition Multimedia Interface) HDMI that the utility model embodiment provides.
Embodiment
Core concept of the present utility model is: the defect that can only realize single display for head-mounted display apparatus of the prior art, under not increasing HDMI output interface and bringing the prerequisite of redundancy, utilizes hardware conversion chip, provides the scheme of the two display of a kind of HDMI.The two display of HDMI can export two-way after referring to HDMI audio-video signal input dual display apparatus, and a road is connected to supports that the TV (TV) that HDMI audio-video signal exports shows, and another road is connected to head mounted display display.The realization of the program utilizes Low Voltage Differential Signal LVDS (Low Voltage Differential Signal) interface on SOC (system on a chip) SoC (the System on Chip) chip of head-mounted display apparatus and integrated circuit built-in audio I2S (Inter-IC Sound) interface, adds that a conversion chip of LVDS form being walked around into HDMI form come.This programme achieves two displays of TV and head mounted display with less cost, also can realize the synchronous and asynchronous display of TV and head mounted display in addition according to the user demand of user, improve user's experience.
Fig. 1 is a kind of HDMI (High Definition Multimedia Interface) HDMI dual display block diagram that the utility model embodiment provides, see Fig. 1, this HDMI dual display 100 of the present utility model comprises: the first chip 101, the second chip 102 be connected with the first chip;
First chip 101 comprises HDMI input interface, HDMI output interface, Low Voltage Differential Signal LVDS output interface and integrated circuit built-in audio I2S output interface;
First chip 101 receives the HDMI audio-video signal of input by HDMI input interface, and exports to the first display device display by after the process of HDMI audio-video signal by HDMI output interface;
And/or,
First chip 101 pairs HDMI audio-video signal processes, and the vision signal of the LVDS form obtained after process is exported to the second chip 102 by LVDS output interface; And the audio signal of the I2S form obtained after process is exported to the second chip 102 by I2S output interface;
Second chip 102 comprises: LVDS input interface, I2S input interface and HDMI output interface;
Second chip 102 receives the LVDS vision signal of the first chip 101 transmission by LVDS input interface, the I2S audio signal of the first chip 101 transmission is received by I2S input interface, and LVDS vision signal and I2S audio signal are integrated, export to the second display device display by HDMI output interface after converting HDMI signal to.
As can be seen from Figure 1, this HDMI dual display of the present utility model can realize, by the HDMI output interface of the first chip 101, the HDMI audio-video signal of input is outputted to the first display device display.In addition, LVDS vision signal and I2S audio signal are exported to the second chip 102 by the first chip 101, and LVDS is to HDMI converter second chip 102 for recycling, export HDMI signal to the second display device.Pass through said process, this HDMI dual display is under the prerequisite not increasing chip HDMI, achieve two displays of HDMI equipment, with low cost and the diversified display demand of user can be met, user is no longer confined to hearing experience that single display equipment brings uninteresting and inconvenient.
Fig. 2 is the schematic diagram of a kind of HDMI (High Definition Multimedia Interface) HDMI dual display that the utility model embodiment provides, Fig. 3 is a kind of HDMI (High Definition Multimedia Interface) HDMI dual display circuit diagram that the utility model embodiment provides, see Fig. 2 and Fig. 3, in the present embodiment, first display device is the TV TV supporting that HDMI audio-video signal exports, and the second display device is head mounted display.
First chip is the SOC (system on a chip) SoC chip of set decoding unit, processing unit and a converting unit, and wherein, the HDMI audio-video signal of decoding unit to input is decoded, and decoded HDMI audio-video signal is sent to processing unit; Processing unit, the HDMI audio-video signal that receipt decoding unit sends also is played up HDMI audio-video signal, is sent to TV after effect process and encryption and shows; And/or processing unit exports decoded HDMI signal to converting unit; Converting unit, receives the audio-video signal that processing unit sends, and vision signal is separated and converts the vision signal of LVDS form to, being sent to LVDS output interface; Audio signal to be separated and the audio signal converting I2S form to is sent to I2S output interface.Further, the first chip also has universal input/output GPIO (General Purpose Input Output) interface and two LED control mouths; In addition, the first chip is also built-in with HDMI input interface and output interface, LVDS output interface, I2S interface and I2C (Inter-Integrated Circuit) interface.
Wherein, I2S is used for transmission of audio signal, I2C bus is used for sending initializing signal initialization second chip to the second chip, the HDMI audio-video signal of input can be changed and process the HDMI form playing up the display of applicable TV by the first chip, also the audio-video signal process after separation can be played up, vision signal outputs to the LVDS input interface of the second chip by LVDS output interface with LVDS form, audio signal outputs to the I2S input interface of the second chip through I2S output interface with I2S audio signal format.
Second chip is a model is IT6263, for completing the chip of LVDS signal conversion HDMI signal conversion, then the vision signal of audio signal and LVDS that the second chip can integrate I2S converts HDMI signal to and outputs to head mounted display display through HDMI output interface.
In the present embodiment, this dual display also comprises a button and two LED, and two LED LED1 are different with the color of LED2, and be respectively LED1 and control red colored lamp, LED2 controls tangerine colored lights.Button and LED coordinate the switching of the asynchronous and simultaneous display of control HDMI output signal between head mounted display and TV.
In the present embodiment, the switching law presetting the two display of HDMI is as follows:
When red represents TV display in ensuing display mode;
In the ensuing display mode of the bright expression of tangerine colored lights, head mounted display can show;
In two following display modes of all bright expression of lamp, head mounted display and TV show simultaneously;
Two lamps all go out and represent that in following display mode, head mounted display and TV do not show.
Switch demand according to the display mode of user, when with head of a household's button, LED can switch in the following order, switch speed be 1 second each:
Red light, tangerine lamp does not all work;
When red, tangerine lamp does not work;
Red light does not work, and tangerine lamp is bright;
Red light, tangerine lamp is all bright.
Corresponding TV and head mounted display have four kinds of display modes:
A pattern: TV, head mounted display does not show;
B pattern: TV shows, and head mounted display does not show;
C pattern: TV does not show, head mounted display shows;
D pattern: TV, head mounted display all shows.
User can according to the demand of oneself, coordinate the light on and off situation of button and LED, select concrete display mode, so, the visual experience that head mounted display brings can either be experienced freely can be switched to TV again thus obtain different visual experiences simultaneously, enhance the interactivity of headset equipment and the satisfaction of user.
Fig. 4 is the work schedule schematic diagram of a kind of HDMI (High Definition Multimedia Interface) HDMI dual display second chip that the utility model embodiment provides, see Fig. 4, this HDMI dual display of the present utility model is when showing, and the work schedule of the second chip needs the output prior to LVDS and the I2S signal of the first chip.Concrete, see Fig. 4, first chip sends enable signal to the second chip by GPIO interface, after the second chip is opened, initializing signal is sent to the second chip by I2C bus, second chip completes initialization after receiving initializing signal, and after waiting the second chip steady operation, normal process LVDS vision signal and I2S audio signal carry out integrating, changing again, and the second chip needs replacement to carry out initialization again when display mode switches.
Fig. 5 is that a kind of HDMI (High Definition Multimedia Interface) HDMI dual display display that the utility model embodiment provides switches schematic diagram, in the present embodiment, see Fig. 5, the concrete handoff procedure of this HDMI dual display of the present utility model is: press mode selection button → TV and head mounted display according to user's display mode demand → user and close to export simultaneously and select required display mode → loosen mode selection key according to pattern display lamp simultaneously, now, according to the selection of user, display mode is divided into two-way: the first via is that the first chip opens the second chip → the first chip by I2C initialization second chip → the first chip output LVDS and I2S to second chip → the second chip integration LVDS and I2S output HDMI → head mounted display by enable signal, second tunnel is that the first chip output HDMI shows to TV end → TV.
First chip switches in conjunction with the mode selection button control TV of user and the display mode of head mounted display: be show HDMI signal by one of head mounted display or TV or do not show HDMI signal by TV and the common HDMI signal or TV and head mounted display of showing of wear-type display.
Concrete, first, user pushes button, and now the first chip closes the HDMI output of TV, and closes transducer second chip by enable signal, makes TV and head-mounted display be all blank screens; Then, two LED carry out bright, switching of going out according to the switch speed preset, and user, according to the light on and off situation of LED, selects switch mode, and unclamps button; First chip receives user and unclamps the input signal of button and combine the output that bright, the control situation that is that go out corresponding of working as the first two LED control the HDMI audio-video signal of the second chip and the HDMI audio-video signal of the HDMI output interface of self, thus the display mode of control HDMI audio-video signal between TV and head mounted display switches.
In the present embodiment, utilize the first chip to the output of control HDMI audio-video signal, its functional realiey mode is: the first integrated chip decoder, the function of processor and transducer, after the input of HDMI audio-video signal, (the HDMI signal of transmission is usually all encryption to carry out decoding process by the decoder in the first chip, by processing HDMI signal after decoders decode, and export again after also needing encryption during TV at output HDMI signal) and be sent to processor and carry out playing up and effect process, one road HDMI audio-video signal can output to TV by the HDMI output interface of the first chip after encryption and show.An other road HDMI audio-video signal sends into transducer by the processor of the first chip, vision signal is separated and is converted LVDS form to by transducer, output to the second chip by LVDS interface, and audio signal separated the signal that converts I2S form to and output to the second chip by I2S interface.According to the input selection of user, first chip realizes the switching of display mode, and the transducer (converting unit) namely by opening, closing the first chip internal realizes the output of the vision signal of LVDS form and the audio signal of I2S form or do not export; And realize the output of HDMI by the path of HDMI output interface in closed and disconnected first chip or do not export.
Accordingly, the second chip internal also has processing unit and converting unit, and the LVDS vision signal of processing unit to the I2S audio signal of input processes and be sent to converting unit; Converting unit is integrated the I2S audio signal be separated and LVDS vision signal, and the audio-video signal being converted to HDMI form exports to wear-type display by HDMI output interface.
In this enforcement, if the pattern of current display is b pattern and TV display, head-mounted display does not show, and user wants to be switched to c pattern and TV does not show, and head mounted display shows; Concrete implementation procedure is as follows: user pushes button, and the first chip controls closes HDMI output interface path, and do not export HDMI audio-video signal to TV TV, now TV screen is without display; Be switched to red light Deng LED not work, when tangerine lamp is bright, user unclamps button, first chip opens the second chip by enable signal, then by after I2C initialization second chip initiation, first chip exports LVDS vision signal and I2S audio signal, and the second chip carries out integrating and outputs to head mounted display by HDMI output interface after being converted to HDMI audio-video signal and shows.The switching of formula of touching from b pattern to c is completed by said process.
It should be noted that, in an embodiment of the present utility model, being switched to c pattern from b pattern is in a display format that example is described, but when practical application, the switching of display mode does not have dividing of order, and namely user can be switched to c from a pattern and also can be switched to b pattern from d pattern.Corresponding relation between the cooperation of button and LED in the present embodiment and display device is also not limited to the associative mode in the present embodiment, namely in other examples, can by red light, tangerine lamp does not all work and is set to correspond to TV, and head-mounted display all shows.And the color of LED is not limited to red and tangerine look, corresponding selection and setting can be carried out to LED and button and lamp to the corresponding relation of display device according to concrete applied environment.In addition, although include the first chip and the second chip in scheme of the present utility model, but be appreciated that, the realization of the technical solution of the utility model utilizes the existing function of chip internal hardware configuration: such as, the corresponding function that audio decoder, Video Decoder, processor and transducer have itself, does not relate to the improvement of the computer program to chip internal.Namely scheme of the present utility model is by the structure of chip internal and the arrangement of annexation, provides a kind of object that can realize the synchronous or asynchronous display of two HDMI display devices, and does not comprise the improvement to method.
In the present embodiment, head mounted display can be wear-type movie theatre, according to this HDMI dual display of the present utility model, make the user of wear-type movie theatre while the sensation enjoying movie theatre, the TV that can be switched to large scale screen is as required watched.Because the impression of wear-type movie theatre is confined to head space, and large-screen HDTV (High-Definition Television) is another kind of visual experience, and user freely can switch between the display device of two kinds of high definitions, obtains different visual experiences.
Fig. 6 is the two display packing flow chart of a kind of HDMI (High Definition Multimedia Interface) HDMI that the utility model embodiment provides, and see Fig. 6, the method comprises:
Step S610, is connected the first chip with the second chip, utilizes the HDMI input interface of the first chip to receive the HDMI audio-video signal of input, and exports to the first display device display by after the process of HDMI audio-video signal by HDMI output interface;
Utilize the HDMI input interface of the first chip to receive the HDMI audio-video signal of outside input in this step, and HDMI audio-video signal is exported to after the processor process of the first chip internal the first display device and show.
Step S620, and/or, utilize the first chip to process HDMI audio-video signal, and the vision signal of the LVDS form obtained after process is exported by LVDS output interface; And the audio signal of the I2S form obtained after process is exported to the second chip by I2S output interface;
In this step, the HDMI audio-video signal of the first chip to input is utilized to process, HDMI audio signal is separated with vision signal, and respectively audio signal is converted to the audio signal of I2S form, vision signal be converted to the vision signal of LVDS form and export to the second chip by corresponding interface.
Step S630, the LVDS input interface of the second chip is utilized to receive LVDS vision signal, receive I2S audio signal by I2S input interface, and LVDS vision signal and I2S audio signal are integrated, after converting HDMI signal to, export to the second display device display by HDMI output interface.
In this step, the LVDS of the second chip is utilized to change HDMI function, the vision signal of the LVDS form of reception and the audio signal of I2S form are integrated, then signal is converted to HDMI audio-video signal and outputs to the second display device by the HDMI output interface of the second chip.
It should be noted that, the two display packing of this HDMI of the present embodiment is corresponding with HDMI dual display above, and the performing step of concrete two display packings and process see the course of work of HDMI dual display above, can repeat no more herein.
In sum, this HDMI dual display of the present utility model, can control according to the display demand of user and selection, which by display device shown, enhance the interactivity of wear-type product, and two display can also give visual experience and experience that user is different, improves the satisfaction of user.
These are only preferred embodiment of the present utility model, be not intended to limit protection range of the present utility model.All do within spirit of the present utility model and principle any amendment, equivalent replacement, improvement etc., be all included in protection range of the present utility model.
Claims (6)
1. a HDMI (High Definition Multimedia Interface) HDMI dual display, is characterized in that, this dual display comprises: the first chip, the second chip be connected with described first chip;
Described first chip comprises HDMI input interface, HDMI output interface, Low Voltage Differential Signal LVDS output interface and integrated circuit built-in audio I2S output interface;
Described first chip receives the HDMI audio-video signal of input by described HDMI input interface, and exports to the first display device display by after the process of described HDMI audio-video signal by described HDMI output interface;
And/or,
Described first chip processes described HDMI audio-video signal, and the vision signal of the LVDS form obtained after process is exported to the second chip by described LVDS output interface; And the audio signal of the I2S form obtained after process is exported to the second chip by described I2S output interface;
Described second chip comprises: LVDS input interface, I2S input interface and HDMI output interface;
Described second chip receives the LVDS vision signal of described first chip transmission by described LVDS input interface, the I2S audio signal of described first chip transmission is received by described I2S input interface, and described LVDS vision signal and I2S audio signal are integrated, export to the second display device display by described HDMI output interface after converting HDMI signal to.
2. HDMI dual display according to claim 1, is characterized in that, described first chip is SOC (system on a chip) SoC chip, has decoding unit, processing unit and converting unit;
The HDMI audio-video signal of described decoding unit to described input is decoded and described decoded HDMI audio-video signal is exported to processing unit;
Described processing unit, receives the HDMI audio-video signal of described decoding unit transmission and is sent to the first display device display after processing described HDMI audio-video signal; And/or described processing unit exports described decoded HDMI signal to converting unit;
Described converting unit, receives the HDMI audio-video signal that described processing unit sends, described vision signal is separated and convert the vision signal of LVDS form to, exporting to LVDS output interface; Described audio signal to be separated and the audio signal described audio signal being converted to I2S form exports to I2S output interface.
3. HDMI dual display according to claim 1, is characterized in that, described dual display also comprises: key-press module;
Described key-press module is connected with the first chip, for receiving the key-press input of user, the first chip is made to control both to show between described first display device and described second display device according to the key-press input of user, the switching of neither display or the display of one of the first display device and the second display device.
4. HDMI dual display according to claim 1, is characterized in that, before described LVDS vision signal and I2S audio signal are sent to the second chip by described first chip, also for:
Send enable signal to described second chip, after the second chip is opened, send initializing signal to described second chip.
5. HDMI dual display according to claim 3, is characterized in that, described dual display also comprises two LED.
6. HDMI dual display according to claim 5, is characterized in that,
Described first display device is the TV supporting that HDMI audio-video signal exports, and described second display device is head mounted display;
Described LED and described key-press module coordinate, and control both to show between described TV and described head mounted display, the switching of neither display or the display of one of TV and head mounted display.
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| CN201420482437.9U CN204131610U (en) | 2014-08-25 | 2014-08-25 | A kind of HDMI (High Definition Multimedia Interface) HDMI dual display |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104243853A (en) * | 2014-08-25 | 2014-12-24 | 青岛歌尔声学科技有限公司 | High-definition multimedia interface (HDMI) double-display device and display method |
| CN110379395A (en) * | 2019-08-14 | 2019-10-25 | 湖北亿咖通科技有限公司 | Vehicle device shows apparatus for demonstrating and method |
-
2014
- 2014-08-25 CN CN201420482437.9U patent/CN204131610U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104243853A (en) * | 2014-08-25 | 2014-12-24 | 青岛歌尔声学科技有限公司 | High-definition multimedia interface (HDMI) double-display device and display method |
| CN110379395A (en) * | 2019-08-14 | 2019-10-25 | 湖北亿咖通科技有限公司 | Vehicle device shows apparatus for demonstrating and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 |