CN100508574C - Control system for playing back video and audio in liquid crystal television - Google Patents
Control system for playing back video and audio in liquid crystal television Download PDFInfo
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- CN100508574C CN100508574C CNB2005100748954A CN200510074895A CN100508574C CN 100508574 C CN100508574 C CN 100508574C CN B2005100748954 A CNB2005100748954 A CN B2005100748954A CN 200510074895 A CN200510074895 A CN 200510074895A CN 100508574 C CN100508574 C CN 100508574C
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- 239000004973 liquid crystal related substance Substances 0.000 title description 3
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000003384 imaging method Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- Transforming Electric Information Into Light Information (AREA)
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Abstract
The invention is designed for use in controlling the audio system, display system and backlight system of a LCD TV set. It keeps a video control unit always in an enabled state; the video control unit receives the signals from external control port and decides if it will output a signal to only start the audio process unit or to only start the video process unit and backlight system or to start the audio process unit, video process unit in together.
Description
Technical field
The present invention relates to a kind of control system for playing back video and audio of LCD TV, relate in particular to a kind of image of LCD TV and control system of single play mode of audio communication or common play-out pattern of being applied to.
Background technology
The driven by power mode of available liquid crystal TV is that the alternating current with AC power input is converted to low-voltage DC via an AC/DC power supply (existing specification is distinguished 5V, 12V, 24V, 48V etc., the output specification is decided according to each tame manufacturer making), this low-voltage DC offers the low-voltage load of TV respectively and uses, the low-voltage load may include display screen and drive panel, video signal treatment circuit plate, equipment such as loudspeaker, and this low-voltage DC divides in addition to exporting a high-tension electricity converting system to, this high-tension electricity converting system makes the output high-tension electricity behind this low-voltage direct electric boost drive the high voltage load of TV, and this high voltage load is the backlight module with gaseous discharge lamp (for example cold cathode fluorescent lamp).
But, LCD TV with digitizing function only relates in the use and changes the signal of video signal processing mode into the digital coding form, also therefore can make LCD TV add many digital functions, additional character image store card card reader on Digital Television for example, can make the user insert digital camera captured and the record the digitized video storage card after, LCD TV is transformed to the liquid crystal electron photo frame views and admires photo, also be used on LCD TV, adding broadcast receiver frequency modulator function, or Direct Digital connects an audio and video player, make LCD TV can play-over music, yet, from existing product as can be seen, as user when no matter single selection photograph is viewed and admired function or music playback function, all electric power systems of LCD TV all are in the state of whole unlatchings, like this, will cause and not need operated element consume electric power still in fact, when especially the user uses music playback function separately, if back light source system and image processing system still are held open state, not only power consumption increases, and also can cause and quicken shortening and ahead of time that LCD TV is superseded its useful life.
Summary of the invention
Main purpose of the present invention is to solve above-mentioned defective, for the existence of avoiding this defective the invention provides a kind of image of LCD TV and control system of single play mode of audio communication or common play-out pattern of being applied to.
The sound information system, imaging system, and the back light source system that are used to control a LCD TV according to the control system for playing back video and audio of LCD TV of the present invention, wherein this control system comprises: an audio-visual transmission unit, and it includes the image process unit that an audio communication processing unit and that drives this sound information system drives this imaging system; Unified power system, its include one with the external power normality under first power unit of the audio-visual transmission unit of driven by power of standing power unit, usefulness the output that possesses start electric power that is electrically connected and second power unit of the driven by power back light source system that a usefulness is exported; An one audio-visual control unit and an external control interface, this audio-visual control unit provides stable electric power to keep starting state with under the normality by standing power unit, and audio-visual control unit receives from the signal of external control interface transmission to come this audio communication processing unit of single startup or this image process unit of single startup and back light source system with decision output one enabling signal or start audio communication processing unit, image process unit, and back light source system jointly; Wherein, be provided with a power supply between this audio-visual control unit and this electric power system and open and close circuit, this power supply opens and closes circuit and receives enabling signal and output drive signal to open and close first power unit and second power unit comes output power.
Control system for playing back video and audio according to LCD TV of the present invention has the beneficial effect of realizing LCD TV Digital Control and energy saving.
Description of drawings
Fig. 1 is a circuit box schematic diagram of the present invention.
Embodiment
Referring now to accompanying drawing following explanation is carried out in relevant detailed description of the present invention and technology contents:
See also shown in Figure 1, be the block schematic diagram of enforcement circuit of the present invention, as shown in the figure, the present invention is a kind of control system for playing back video and audio of LCD TV, mainly be the sound information system 60 that is used to control a LCD TV, imaging system 70, and back light source system 80, this control system comprises:
One audio-visual transmission unit 40, it includes the image process unit 42 that an audio communication processing unit 41 and that drives this sound information system 60 drives this imaging system 70.
An one audio-visual control unit 30 and an external control interface 50, this audio-visual control unit 30 provides stable electric power to keep starting state under normal conditions by this standing power unit 21, this external control interface 50 can be remote controller, and this audio-visual control unit 30 receives from the signal of these external control interface 50 transmission to come this audio communication processing unit 41 of single startup or this image process unit 42 of single startup and back light source system 80 with decision output one enabling signal a1, a2, a3, a4 or start this audio communication processing unit 41, image process unit 42, and back light source system 80 jointly.
Want to use separately the image display function of LCD TV as the user, when for example viewing and admiring digital photos, the signal that will have independent startup image display function by external control interface 50 transfers to audio-visual control unit 30, audio-visual control unit 30 will be exported enabling signal a1, a3, a4 is with this image process unit 42 of independent startup and back light source system 80, Starting mode can be by being provided with a power supply between this audio-visual control unit 30 and this electric power system 20 and opens and closes circuit 24, this power supply opens and closes circuit 24 and receives this enabling signal a1 and output drive signal b1, b2 is to open and close first power unit 22 and second power unit 23 comes output power, wherein this power supply opens and closes circuit 24 also can provide stable electric power to keep starting state with under the normality by this standing power unit 21, the perhaps enabling signal a3 of this audio-visual control unit 30, a4 directly drives image process unit 42 and back light source system 80 with its startup, in the present embodiment, can realizing by this audio-visual control unit 30 in order to open and close the enabling signal a3 of switching circuit 411 between the image process unit 42 and first power unit 22, from above-mentioned, can obviously find out, when the user uses the image display function, the sound information system 60 of LCD TV and audio communication processing unit 41 will still be in the power breakdown state and not open, and this can effectively be avoided unnecessary waste of energy.
If the user wants to use separately music playback function, then will start the music playback function signal separately and transfer to audio-visual control unit 30 by external control interface 50, audio-visual control unit 30 makes output enabling signal a1, a2 starts this audio communication processing unit 41 and sound information system 60 separately, Starting mode can be equally by being provided with a power supply between this audio-visual control unit 30 and this electric system 20 and opens and closes circuit 24, power supply keying circuit 24 reception this enabling signal a1 and output drive signal b2 come output power to open and close first power unit 22 thus, or directly drive audio communication processing unit 41 with its startup by the enabling signal a2 of this audio-visual control unit 30, in the present embodiment, can realizing by this audio-visual control unit 30 in order to open and close a switching circuit 421 between the audio communication processing unit 41 and first electric unit 22, from above-mentioned, can obviously find out, when the user operates music playback function, the imaging system 70 of LCD TV, image process unit 42, second power unit 23, and back light source system 80 will still be in the power breakdown state and not unlatching, this can effectively be avoided unnecessary waste of energy, and owing to do not produce the image light source, thereby can interference environment light.
If when user's ornamental film or TV programme, then above all functions all can be opened, but, then still can set according to demand if the user is connected to LCD TV external audio equipment and does not still need sound information system 60 and audio communication processing unit 41.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc. and all should be included within protection scope of the present invention.
Claims (8)
1. the control system for playing back video and audio of a LCD TV is used to control sound information system, imaging system, and the back light source system of a LCD TV, it is characterized in that described control system comprises:
One audio-visual transmission unit, it includes the image process unit that an audio communication processing unit and that drives described sound information system drives described imaging system;
Unified power system, its include one with the external power normality under first power unit of the described audio-visual transmission unit of driven by power of standing power unit, usefulness the output that possesses start electric power that is electrically connected and second power unit of the described back light source system of driven by power that a usefulness is exported;
An one audio-visual control unit and an external control interface, described audio-visual control unit provides stable electric power to keep starting state with under the normality by described standing power unit, and described audio-visual control unit receives from the signal of described external control interface transmission to come the described audio communication processing unit of single startup or described image process unit of single startup and back light source system with decision output one enabling signal or start described audio communication processing unit, described image process unit, and described back light source system jointly;
Wherein, be provided with a power supply between described audio-visual control unit and the described electric power system and open and close circuit, described power supply opens and closes circuit and receives described enabling signal and export described drive signal to open and close described first power unit and described second power unit comes output power.
2. the control system for playing back video and audio of LCD TV according to claim 1 is characterized in that, described power supply opens and closes circuit provides stable electric power to keep starting state under normal conditions by described standing power unit.
3. the control system for playing back video and audio of LCD TV according to claim 1 is characterized in that, the enabling signal of described audio-visual control unit directly drives described audio communication processing unit with its startup.
4. the control system for playing back video and audio of LCD TV according to claim 1 is characterized in that, the enabling signal of described audio-visual control unit directly drives described image process unit with its startup.
5. the control system for playing back video and audio of LCD TV according to claim 1 is characterized in that, the enabling signal of described audio-visual control unit directly drives described back light source system with its startup.
6. the control system for playing back video and audio of LCD TV according to claim 1 is characterized in that, the enabling signal of described audio-visual control unit is in order to open and close a switching circuit between described audio communication processing unit and described first power unit.
7. the control system for playing back video and audio of LCD TV according to claim 1 is characterized in that, the enabling signal of described audio-visual control unit is in order to open and close a switching circuit between described image process unit and described first power unit.
8. the control system for playing back video and audio of LCD TV according to claim 1 is characterized in that, can be provided with a switching circuit between described standing power unit and the described external power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100748954A CN100508574C (en) | 2005-06-03 | 2005-06-03 | Control system for playing back video and audio in liquid crystal television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100748954A CN100508574C (en) | 2005-06-03 | 2005-06-03 | Control system for playing back video and audio in liquid crystal television |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1874452A CN1874452A (en) | 2006-12-06 |
| CN100508574C true CN100508574C (en) | 2009-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100748954A Expired - Fee Related CN100508574C (en) | 2005-06-03 | 2005-06-03 | Control system for playing back video and audio in liquid crystal television |
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| Country | Link |
|---|---|
| CN (1) | CN100508574C (en) |
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- 2005-06-03 CN CNB2005100748954A patent/CN100508574C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1874452A (en) | 2006-12-06 |
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Granted publication date: 20090701 Termination date: 20120603 |