CN203261410U - Digital TV system - Google Patents
Digital TV system Download PDFInfo
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- CN203261410U CN203261410U CN 201320244822 CN201320244822U CN203261410U CN 203261410 U CN203261410 U CN 203261410U CN 201320244822 CN201320244822 CN 201320244822 CN 201320244822 U CN201320244822 U CN 201320244822U CN 203261410 U CN203261410 U CN 203261410U
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- hdmi interface
- video source
- processor
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Abstract
The utility model embodiment discloses a digital TV system comprising a digital TV terminal and a video source terminal connected with the digital TV terminal; the digital TV terminal comprises a processor and at least one HDMI interface device; the at least one HDMI interface device is connected with the processor; the video source terminal is connected with the processor through a first HDMI interface device of the HDMI interface devices; the first HDMI interface device can be anyone of the HDMI interface devices; the video source terminal sends playing control instructions to the processor through the first HDMI interface device; and the processor receives the playing control instructions, and controls the digital TV terminal to play video signals transmitted by the first HDMI interface device from the video source terminal. The digital TV system saves cost and simplifies production design.
Description
Technical field
The utility model relates to digital TV field, relates in particular to a kind of digital television system.
Background technology
At present, for more convenient user uses, provide the video source terminal of video source and digital television devices terminal all to support the CEC agreement, namely be, the user can pass through wherein equipment of control, and realizes other equipment that control links to each other with its HDMI.
Wherein, the control system of present existing realization CEC protocol function can be as follows: a plurality of video source terminals of video source that provide are connected with digital television devices by a plurality of HDMI interfaces, wherein, the EDID data of HDMI interface corresponding to each video source terminal be stored in respectively with corresponding video source terminal with memory that digital television devices is connected in.If wherein certain terminal equipment start, memory corresponding to video source terminal will start, the video source terminal is by the start of CEC bus control figure television terminal, digital television devices is by the physical address of HDMI interface corresponding to the video source terminal of certain start of EDID data acquisition in the memory that reads startup, HDMI interface switch in the digital television devices switches to the HDMI interface corresponding to certain video source terminal of start according to the physical address of HDMI interface, thereby make certain video source terminal and the digital television devices of start set up the HDMI passage, carry out video signal transmission.
But in the control system of existing realization CEC function, HDMI interface corresponding to each video source terminal needs a plug-in memory, and this has caused the wasting of resources, and increases size increase layout difficulty in the layout of circuit.
The utility model content
The utility model embodiment technical problem to be solved is, a kind of digital television system is provided.Can reduce cost, Production design is simplified in cost saving.
In order to solve the problems of the technologies described above, the utility model embodiment provides a kind of digital television system, comprises digital TV terminal and the video source terminal that is connected with described digital TV terminal, and described digital TV terminal comprises processor and at least one HDMI interface equipment, wherein
Described at least one HDMI interface equipment is connected with described processor;
Described video source terminal is connected with described processor by the HDMI interface equipment in described at least one HDMI interface equipment, and a described HDMI interface equipment is any in described at least one HDMI interface equipment;
Described video source terminal is by a described HDMI interface equipment, send the Play Control instruction to described processor, described processor receives the Play Control instruction and controls described digital TV terminal and play described video source terminal by the vision signal of described HDMI interface equipment transmission.
Wherein, also comprise:
Described video source terminal sends the start control command by a described HDMI interface equipment to described processor, and described processor receives the start control command and described digital TV terminal is opened in control;
Described processor cuts out described video source terminal by a described HDMI interface equipment to described video source terminal transmission shutdown control command and control.
Wherein, each the HDMI interface equipment in described at least one HDMI interface equipment all comprises power port, and described processor comprises at least one I/O port;
The power port of a described HDMI interface equipment is connected with an I/O port of described processor.
Wherein, also comprise:
HDMI interface switch, described HDMI interface switch are connected with described at least one HDMI interface equipment with described processor respectively;
Described HDMI interface switch is used for setting up the transmission channel between a described HDMI interface equipment and the described processor, makes described processor control described digital TV terminal and plays described video source terminal by the vision signal of the transmission of the transmission channel between a described HDMI interface equipment and the described processor.
Wherein, each the HDMI interface equipment in described at least one HDMI interface equipment all comprises a CEC port, and described processor comprises the 2nd CEC port;
The one CEC port of a described HDMI interface equipment is connected with the 2nd CEC port of described processor.
Wherein, also comprise:
Be used for the I/O port of described processor is carried out the current-limiting circuit of current limliting, an end of described current-limiting circuit is connected with the power port of a described HDMI interface equipment, and the other end of described current-limiting circuit is connected with the I/O port of described processor.
Wherein, described current-limiting circuit comprises at least one resistance, and described resistance connects by parallel way or series system connects.
Wherein, the HDMI interface equipment of described video source terminal is the HDMI interface chip;
Described HDMI interface comprises the power port pin, as the power port of described HDMI interface; Described HDMI interface comprises a CEC port pin, as a CEC port of described HDMI interface.
Wherein, described processor is processor chips;
Described processor chips comprise I/O port pin, as the I/O port of described processor chips;
Described processor chips comprise the 2nd CEC port pin, as the 2nd CEC port of described processor chips;
Described HDMI interface switch is that the HDMI interface switches chip.
Implement the utility model embodiment, have following beneficial effect:
The utility model embodiment is connected with the I/O port of processor by the power port with the HDMI interface equipment so that the video source terminal can be by the power port of HDMI interface equipment, send the Play Control instruction to processor, processor receives the Play Control instruction and controls described digital TV terminal and play described video source terminal by the vision signal of HDMI interface equipment transmission.This is so that the video source terminal only just can be controlled the vision signal of digital TV terminal displaying video source terminal transmission by the power port of HDMI interface equipment, and this has simplified the circuit design that can realize the digital television system of CEC function, has saved production cost.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the first example structure schematic diagram that the utility model is used for digital television system;
Fig. 2 is the internal circuit connection diagram of the utility model digital television system.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, the structural representation of a kind of digital television system that provides for the utility model.As shown in Figure 1, described a kind of digital television system comprises digital TV terminal 100 and at least one video source terminal 200.
In the specific embodiment, this digital television system is used for realizing CEC(Consumer Electronics Control, consumer electronics control) digital television system of protocol function, wherein, the CEC agreement is a kind of agreement that senior control function is provided for all home A/V equipments that connect by the HDMI line, the equipment that the user connects by HDMI can be to these with HDMI(High Definition Multimedia Interface, HDMI (High Definition Multimedia Interface)) other equipment of connecting control.CEC has simplified the operation of digital home, and an equipment can be controlled the digital product that all support HDMI.
Wherein, in the present embodiment, digital TV terminal 100 is connected with at least one video source terminal 200.Video source terminal 200 can send the Play Control instruction to digital TV terminal 100 according to user's operation, and digital TV terminal 100 receives the vision signal of Play Control instruction and 200 transmission of control figure television terminal 100 displaying video source terminals.Wherein, when video source terminal 200 receives the start-up command of user's operation, video source terminal 200 starting up, and by CEC bus transmission start-up command, digital TV terminal 100 will be by CEC bus reception start control command and according to start control command power-on, and control figure television terminal 100 switches to the vision signal of corresponding channel video signal receiver, video source terminal 200 transmissions and also plays; When digital TV terminal 100 receives the shutdown command of user's operation, digital TV terminal 100 can send shutdown command by the CEC bus, video source terminal 200 stops to digital TV terminal 100 transmission video signals and shutdown according to the control of the shutdown command on CEC bus video source terminal 200, and digital TV terminal 100 is carried out shutdown command.
Further, when the video source terminal receives the play instruction of user's operation during in halted state, digital TV terminal 100 receives the Switch Video source order that video source terminal 200 sends from the CEC bus, digital TV terminal 100 receives vision signal and broadcast that the video source terminal 200 after switching sends according to Switch Video source order Switch Video source.
In the specific embodiment, at least one video source terminal 200 is connected with digital TV terminal 100.Wherein.When video source terminal 200 received the start-up command of user's operation, video source terminal 200 sent the start control command by the CEC bus to digital TV terminal 100 and makes digital TV terminal 100 power-on, and sends vision signal to digital TV terminal 100; When video source terminal 200 received the shutdown command of digital TV terminal 100 transmissions from the CEC bus, video source terminal 200 stopped to digital TV terminal 100 transmission vision signals and cuts off the electricity supply.
Further, when video source terminal 200 received the play instruction of user's operation during in halted state, video source terminal 200 sent Switch Video source orders and sends vision signal after switching to digital TV terminal to digital TV terminal 100.
Below, in conjunction with the internal circuit connection diagram of the digital television system of Fig. 2 the operation principle in implementation process of this digital television system, the internal circuit connection diagram of Fig. 2 digital television system provided by the invention are described.
In the present embodiment, as shown in Figure 2, HDMI A, HDMI B, HDMI C etc. interface is the HDMI interface of the digital TV terminal in the digital television system, and each HDMI interface is connected with each video source terminal, among the embodiment to only have HDMI interface HDMI A and video source terminal to be connected to example.HDMI SWITCH IC is that the HDMI interface of the digital TV terminal in the digital television system switches chip, is connected with a plurality of HDMI interface ﹠ processor chip TV IC respectively, and TV IC is the processor chips of the digital TV terminal in the digital television system.Wherein, HDMI interface HDMI A comprises power port HDMI-5V pin and CEC pin, and the HDMI-5V pin is as the power port of HDMI interface HDMI A, and the CEC pin is as the CEC port of HDMA interface HDMA; Processor chips TV IC comprises I/O port I/O pin and CEC pin, and the I/O pin is as the I/O end of processor chips TV IC, and the CEC pin is as the 2nd CEC port of processor chips TV IC.Wherein, power port HDMI-5V pin is connected with the power end of the video source terminal of digital television system and the I/O pin of processor chips TV IC respectively, the CEC pin of HDMI A is connected with the CEC pin of TV IC, make up the CEC bus, the video source terminal can be connected with digital TV terminal by the CEC bus, so that the user can pass through wherein equipment of control, and realize other equipment that control links to each other with its HDMI.Further, power port HDMI-5V pin can be connected with the I/O pin by current-limiting circuit, and current-limiting circuit comprises at least one resistance, and namely power port HDMI-5V is connected with the I/O pin by a current-limiting resistance or a plurality of parallel resistance or series resistance.Further, analogize according to HDMI interface HDMI A structure and annexation, the HDMI interfaces such as HDMI interface HDMI B, HDMI interface HDMI C have similar structure and annexation.
When receiving the user, the video source terminal starts shooting when operation, the HDMI-5V pin that links to each other with the video source terminal is with input high level, and the video source terminal is by CEC bus broadcast start control command, the processor chips TV IC that is connected with the CEC bus obtains start-up command and the start of control figure television terminal by the CEC bus, simultaneously, with the HDMI-5V pin with high level output to the I/O pin that is connected, the I/O pin will be transfused to high level, processor chips TV IC according to I/O pin level variation from low to high to judge be that the HDMI interface HDMI A that is connected with the I/O pin sends start-up command and outputting video signal, processor chips TV IC is according to judging that the HDMI A interface channel control HDMI interface that obtains switches the HDMI interface HDMI A that chip HDMI SWITCH IC switches to the HDMI passage of digital TV terminal the vision signal input, the video source terminal of digital TV terminal and start is established a communications link, and receive the video source terminal that is connected with HDMI interface HDMI A to the vision signal of digital TV terminal output and play.Wherein, when processor chips TV IC control HDMI interface switches chip HDMI SWITCH IC access HDMI interface HDMI A channel, the HDMI interface switches the HDMI-HPD pin of chip HDMI SWITCH IC to the HPD pin output high level (as shown in Figure 2) of HDMI interface HDMI A, HDMI interface HDMI A is according to the from low to high variation of level of HPD pin, read interface IP address when prepass by iic bus (the SCL pin of the HDMI A of Fig. 2 and SDA pin) from processor chips TV IC, and current channel address is saved in the memory of the video source terminal that is connected with HDMI interface HDMI A.Processor chips TV IC is that the logical address that the current HDMI interface chip HDMI A that accesses distributes is saved in the interior memory cell of chip.
Further, when receiving the user, digital TV terminal cuts off the electricity supply when operation, processor chips TV IC will be by CEC bus broadcast shutdown control command, the video source terminal obtains shutdown command by the CEC bus that HDMI interface HDMI A connects, and cut-out video source terminal power supply, the video source terminal closedown.
Can be preferred, when the video source terminal receives the user and has " time-out " state to switch to " broadcast " state, the video source terminal is sent to the interface IP address of the passage of storage the processor chips TV IC of digital TV terminal by the CEC bus, processor chips TV IC switches chip HDMI SWITCH IC Switch Video source channels and HDMI interface HDMI A channel corresponding to access interface address according to the interface IP address control HDMI interface of the passage that receives, and the video source terminal that digital TV terminal is received is connected with HDMI interface HDMI A is to vision signal and the broadcast of digital TV terminal output.
We are understandable that by upper embodiment: by above connected mode, the video source terminal need not passed through read memory EDID(Extended Display Identification Data, the extending display identification data) physical address of data acquisition HDMI A interface can obtain the HDMI A channel and set up passage with digital TV terminal to be connected this cost saving and conserve space.
By the description of above-described embodiment, the utlity model has following advantage:
The utility model embodiment is connected with the I/O port of processor by the power port with the HDMI interface equipment so that the video source terminal can be by the power port of HDMI interface equipment, send the Play Control instruction to processor, processor receives the Play Control instruction and controls described digital TV terminal and play described video source terminal by the vision signal of HDMI interface equipment transmission.This is so that the video source terminal only just can be controlled the vision signal of digital TV terminal displaying video source terminal transmission by the power port of HDMI interface equipment, and this has simplified the circuit design that can realize the digital television system of CEC function, has saved production cost.
Above disclosed only is the utility model preferred embodiment, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (9)
1. a digital television system comprises digital TV terminal and the video source terminal that is connected with described digital TV terminal, and described digital TV terminal comprises processor and at least one HDMI interface equipment, it is characterized in that:
Described at least one HDMI interface equipment is connected with described processor;
Described video source terminal is connected with described processor by the HDMI interface equipment in described at least one HDMI interface equipment, and a described HDMI interface equipment is any in described at least one HDMI interface equipment;
Described video source terminal is by a described HDMI interface equipment, send the Play Control instruction to described processor, described processor receives the Play Control instruction and controls described digital TV terminal and play described video source terminal by the vision signal of described HDMI interface equipment transmission.
2. the system as claimed in claim 1 is characterized in that, also comprises:
Described video source terminal sends the start control command by a described HDMI interface equipment to described processor, and described processor receives the start control command and described digital TV terminal is opened in control;
Described processor cuts out described video source terminal by a described HDMI interface equipment to described video source terminal transmission shutdown control command and control.
3. system as claimed in claim 2 is characterized in that, each the HDMI interface equipment in described at least one HDMI interface equipment all comprises power port, and described processor comprises at least one I/O port;
The power port of a described HDMI interface equipment is connected with an I/O port of described processor.
4. system as claimed in claim 3 is characterized in that, also comprises:
HDMI interface switch, described HDMI interface switch are connected with described at least one HDMI interface equipment with described processor respectively;
Described HDMI interface switch is used for setting up the transmission channel between a described HDMI interface equipment and the described processor, makes described processor control described digital TV terminal and plays described video source terminal by the vision signal of the transmission of the transmission channel between a described HDMI interface equipment and the described processor.
5. system as claimed in claim 4 is characterized in that, each the HDMI interface equipment in described at least one HDMI interface equipment all comprises a CEC port, and described processor comprises the 2nd CEC port;
The one CEC port of a described HDMI interface equipment is connected with the 2nd CEC port of described processor.
6. system as claimed in claim 5 is characterized in that, also comprises:
Be used for the I/O port of described processor is carried out the current-limiting circuit of current limliting, an end of described current-limiting circuit is connected with the power port of a described HDMI interface equipment, and the other end of described current-limiting circuit is connected with the I/O port of described processor.
7. system as claimed in claim 6 is characterized in that, described current-limiting circuit comprises at least one resistance, and described resistance connects by parallel way or series system connects.
8. system as claimed in claim 7 is characterized in that, the HDMI interface equipment of described video source terminal is the HDMI interface;
Described HDMI interface comprises the power port pin, as the power port of described HDMI interface; Described HDMI interface comprises a CEC port pin, as a CEC port of described HDMI interface.
9. system as claimed in claim 8 is characterized in that, described processor is processor chips;
Described processor chips comprise I/O port pin, as the I/O port of described processor chips;
Described processor chips comprise the 2nd CEC port pin, as the 2nd CEC port of described processor chips;
Described HDMI interface switch is that the HDMI interface switches chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320244822 CN203261410U (en) | 2013-05-08 | 2013-05-08 | Digital TV system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320244822 CN203261410U (en) | 2013-05-08 | 2013-05-08 | Digital TV system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203261410U true CN203261410U (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320244822 Expired - Fee Related CN203261410U (en) | 2013-05-08 | 2013-05-08 | Digital TV system |
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| CN (1) | CN203261410U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716680A (en) * | 2013-12-31 | 2014-04-09 | 浩利源电子(深圳)有限公司 | System and method for wireless video transmission |
| CN106803914A (en) * | 2017-03-15 | 2017-06-06 | 苏州瑞特纳电子科技有限公司 | A kind of flat-panel screens control system and its control method |
| CN111447498A (en) * | 2019-12-04 | 2020-07-24 | 海信视像科技股份有限公司 | Awakening method of display equipment and display equipment |
-
2013
- 2013-05-08 CN CN 201320244822 patent/CN203261410U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716680A (en) * | 2013-12-31 | 2014-04-09 | 浩利源电子(深圳)有限公司 | System and method for wireless video transmission |
| CN106803914A (en) * | 2017-03-15 | 2017-06-06 | 苏州瑞特纳电子科技有限公司 | A kind of flat-panel screens control system and its control method |
| CN111447498A (en) * | 2019-12-04 | 2020-07-24 | 海信视像科技股份有限公司 | Awakening method of display equipment and display equipment |
| CN111954044A (en) * | 2019-12-04 | 2020-11-17 | 海信视像科技股份有限公司 | Channel switching method and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20131030 Termination date: 20150508 |
|
| EXPY | Termination of patent right or utility model |