CN102404620A - Receiving terminal of digital television - Google Patents
Receiving terminal of digital television Download PDFInfo
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- CN102404620A CN102404620A CN2011103867611A CN201110386761A CN102404620A CN 102404620 A CN102404620 A CN 102404620A CN 2011103867611 A CN2011103867611 A CN 2011103867611A CN 201110386761 A CN201110386761 A CN 201110386761A CN 102404620 A CN102404620 A CN 102404620A
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Abstract
The embodiment of the invention discloses a receiving terminal of a digital television, which comprises a main power supply, a MCU (Micro Controller Unit), a switch power supply, a main board, a first electronic switch, a first photoelectric coupler and a second photoelectric coupler; the main power supply is connected with the MCU and the switch power supply for providing power for the MCU and providing power for the main board by the switch power supply; the first electronic switch is serially connected with a connecting circuit of the main power supply and the switch power supply and controlled by the MCU; when the MCU receives a standby signal, the MCU controls the first electronic switch to switch off; when the MCU receives a signal for cancelling the standby state, the MCU controls the first electronic switch to close; the input end of the first photoelectric coupler is connected with the signal output end of the main board while the output end thereof is connected with the signal input end of the MCU; and the input end of the second photoelectric coupler is connected with the signal output end of the MCU while the output end thereof is connected with the signal input end of the main board. Low power consumption and capability of supporting advanced application of the digital television are realized by adopting the receiving terminal of the digital television disclosed by the invention.
Description
Technical field
The present invention relates to digital television techniques, relate in particular to a kind of receiving terminal for digital television.
Background technology
At present, STB possibly be arranged in the elementary of power supply with MCU (Micro Control Unit, microcontroller) from energy-conservation needs, and separate between the mainboard; So when STB gets into holding state, can be by the dump of MCU with mainboard, thus the purpose of realization low standby power loss.But this kind mode is but ignored some supports such as ADVANCED APPLICATIONS such as stand-by time passback or standby memories to STB.
Summary of the invention
Embodiment of the invention technical problem to be solved is; A kind of receiving terminal for digital television is provided; Can when realizing low-power consumption, realize the communication between MCU and the mainboard, support receiving terminal for digital television to realize such as ADVANCED APPLICATIONS such as stand-by time passback or standby memories.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of receiving terminal for digital television, comprising: main power source, MCU, Switching Power Supply and mainboard; Said main power source is connected with Switching Power Supply with said MCU respectively, is used to said MCU power supply, and is said main board power supply through said Switching Power Supply;
Also comprise: first electronic switch, first photoelectrical coupler and second photoelectrical coupler;
Said first electronic switch is connected on the connection line of said main power source and Switching Power Supply, and receives the control of said MCU;
When said MCU receives standby signal; Control said first electronic switch and break off, cut off being connected of said main power source and Switching Power Supply, when said MCU receives the standby cancelling signal; Control said first electronic switch closes, recover being connected of said main power source and Switching Power Supply;
The input of said first photoelectrical coupler is connected to the signal output part of said mainboard, and its output is connected to the signal input part of said MCU;
The input of said second photoelectrical coupler is connected to the signal output part of said MCU, and its output is connected to the signal input part of said mainboard.
Wherein, said first photoelectrical coupler comprises: first light-emitting diode and first phototriode, and said second photoelectrical coupler comprises: second light-emitting diode and second phototriode;
The high level end of said first light-emitting diode is connected to the signal output part of said mainboard, and the low level end of said first light-emitting diode is connected to cold ground;
The collector electrode of said first phototriode is connected to the signal input part of said MCU, and the emitter of said first phototriode is connected to thermally;
The high level end of said second light-emitting diode is connected to the signal output part of said MCU, and the low level end of said second light-emitting diode is connected to thermally;
The collector electrode of said second phototriode is connected to the signal input part of said mainboard, and the emitter of said second phototriode is connected to cold ground.
Wherein, said main power source comprises: Electro Magnetic Compatibility EMC circuit, current rectifying and wave filtering circuit and decompression voltage regulator;
The input of said EMC circuit is connected with civil power, and output is connected with the input of said current rectifying and wave filtering circuit; The output of said current rectifying and wave filtering circuit is connected with the input of said decompression voltage regulator and the input of Switching Power Supply respectively; The output of said decompression voltage regulator is connected with the input of said MCU.
Wherein, said Switching Power Supply comprises: transformer, power supply vibration output circuit and feedback loop;
Said transformer is connected between said main power source and the mainboard, and the output of said transformer receives the control of said power supply vibration output circuit, and said power supply vibration output circuit is adjusted the duty cycle of switching of said transformer, controls the output of said transformer; One end of said feedback loop is connected to the connection line between said transformer and the mainboard; The other end is connected to the feedback pin of said power supply vibration output circuit; The output ground of said transformer is fed back to said power supply vibration output circuit, the output that makes said power supply vibration output circuit stablize said transformer.
Wherein, also comprise: infrared remote receiver;
Said infrared remote receiver is connected to said MCU, is used for the standby signal or the standby cancelling signal in the external world are sent to said MCU.
Correspondingly, the embodiment of the invention also provides a kind of receiving terminal for digital television, comprising: main power source, MCU, Switching Power Supply and mainboard, and said Switching Power Supply comprises: transformer, power supply vibration output circuit and feedback loop;
Said main power source is connected with transformer with said MCU respectively mutually; Be used to said MCU power supply, and be said main board power supply through said transformer, said power supply vibration output circuit is connected with said transformer; Through controlling the duty cycle of switching of said transformer; Control the output of said transformer, an end of said feedback loop is connected to the connection line between said transformer and the mainboard, and the other end is connected to the feedback pin of said power supply vibration output circuit; The output ground of said transformer is fed back to said power supply vibration output circuit, the output that makes said power supply vibration output circuit stablize said transformer.
Also comprise: second electronic switch, first photoelectrical coupler and second photoelectrical coupler;
Said second electronic switch be connected on the feedback pin of said power supply vibration output circuit and thermally between, and receive the control of said MCU;
When said MCU receives standby signal; Control said second electronic switch with the feedback pin of said power supply vibration output circuit with thermally be connected; When said MCU receives the standby cancelling signal, control said second electronic switch and break off said power supply the vibration feedback pin of output circuit and being connected thermally;
The input of said first photoelectrical coupler is connected to the signal output part of said mainboard, and its output is connected to the signal input part of said MCU;
The input of said second photoelectrical coupler is connected to the signal output part of said MCU, and its output is connected to the signal input part of said mainboard.
Wherein, said first photoelectrical coupler comprises: first light-emitting diode and first phototriode, and said second photoelectrical coupler comprises: second light-emitting diode and second phototriode;
The high level end of said first light-emitting diode is connected to the signal output part of said mainboard, and the low level end of said first light-emitting diode is connected to cold ground;
The collector electrode of said first phototriode is connected to the signal input part of said MCU, and the emitter of said first phototriode is connected to thermally;
The high level end of said second light-emitting diode is connected to the signal output part of said MCU, and the low level end of said second light-emitting diode is connected to thermally;
The collector electrode of said second phototriode is connected to the signal input part of said mainboard, and the emitter of said second phototriode is connected to cold ground.
Wherein, said main power source comprises: Electro Magnetic Compatibility EMC circuit, current rectifying and wave filtering circuit and decompression voltage regulator;
The input of said EMC circuit is connected with civil power, and output is connected with the input of said current rectifying and wave filtering circuit; The output of said current rectifying and wave filtering circuit is connected with the input of said decompression voltage regulator and the input of transformer respectively; The output of said decompression voltage regulator is connected with the input of said MCU.
Wherein, also comprise: infrared remote receiver;
Said infrared remote receiver is connected to said MCU, is used for the standby signal or the standby cancelling signal in the external world are sent to said MCU.
Embodiment of the present invention embodiment has following beneficial effect:
The embodiment of the invention is controlled first electronic switch through MCU and the connection line of main power source and Switching Power Supply is cut off or is connected; Or control the voltage that second electronic switch is regulated the feedback pin of power supply vibration output circuit, thereby realize the low-power consumption under the receiving terminal for digital television holding state through MCU; In addition, also realize the intercommunication mutually of MCU and mainboard, thereby support receiving terminal for digital television to realize such as ADVANCED APPLICATIONS such as stand-by time passback or standby memories through first photoelectrical coupler and second photoelectrical coupler; For example, be example with the stand-by time passback, when receiving terminal for digital television gets into holding state; The mainboard outage quits work, and MCU works on; And MCU can write down the duration of standby; Thereby when receiving terminal for digital television when holding state is revived, the duration of standby is returned to mainboard through second photoelectrical coupler, realize the stand-by time passback.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of first embodiment of receiving terminal for digital television of the present invention;
Fig. 2 is the structural representation of second embodiment of receiving terminal for digital television of the present invention;
Fig. 3 is the structural representation of the 3rd embodiment of receiving terminal for digital television of the present invention.
Fig. 4 is the structural representation of the 4th embodiment of receiving terminal for digital television of the present invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Please refer to Fig. 1, is the structural representation of first embodiment of receiving terminal for digital television of the present invention, and this receiving terminal for digital television can be STB, digital TV integrated machine, network protocol television or Digital Video Broadcasting Handheld; It comprises: main power source 11, MCU12, Switching Power Supply 13, mainboard 14, first photoelectrical coupler 15, second photoelectrical coupler 16 and first electronic switch 17.
Wherein, main power source 11 is connected with MCU12, is used to the MCU12 power supply; Main power source 11 is mainboard 14 power supplies through Switching Power Supply 13 also.
First electronic switch 17 is connected on the connection line of main power source 11 and Switching Power Supply 13, and receives the control of MCU12.Particularly, when MCU12 receives standby signal, control first electronic switch 17 and break off, the connection line cut-out with main power source 11 and Switching Power Supply 13 all quits work Switching Power Supply 13 and mainboard 14; When MCU12 receives the standby cancelling signal, control first electronic switch, 17 closures, recover being connected of main power source 11 and Switching Power Supply 13, Switching Power Supply 13 and mainboard 14 are all normally worked.Because receiving terminal for digital television gets into after the holding state, all the quitting work of Switching Power Supply 13 and mainboard 14, so the whole stand-by power consumption of receiving terminal for digital television is lower.
MCU12 realizes mutually intercommunication through first photoelectrical coupler 15 with second photoelectrical coupler 16 with mainboard 14.Particularly, the input of first photoelectrical coupler 15 is connected with the signal output part of mainboard 14, and its output is connected with the signal input part of MCU12, is used for the signal of mainboard 14 is passed to MCU12; The input of second photoelectrical coupler 16 is connected with the signal output part of MCU12, and its output is connected with the signal input part of mainboard 14, is used for the signal of MCU12 is passed to mainboard 14.
When receiving terminal for digital television got into holding state, the power supply of mainboard 14 was cut off, and mainboard 14 quits work; This moment, MCU12 worked on, and can write down the duration of standby or the information of the generation under the holding state; When receiving terminal for digital television when holding state is revived, MCU12 passes to mainboard 14 with the information that the standby time or the holding state of record produces down through second photoelectrical coupler 16, thereby supports ADVANCED APPLICATIONS such as receiving terminal for digital television realization time passback.
Please refer to Fig. 2, is the structural representation of second embodiment of receiving terminal for digital television of the present invention, and Fig. 2 is to the refinement of Fig. 1 and replenishes.
Particularly, among Fig. 2, main power source comprises: EMC (Electro Magnetic Compatibility, Electro Magnetic Compatibility circuit) circuit 111, current rectifying and wave filtering circuit 112 and decompression voltage regulator 113.
Wherein, EMC circuit 111 is connected with civil power; Be used to improve the Electromagnetic Compatibility of receiving terminal for digital television; Current rectifying and wave filtering circuit 112 can adopt bridge rectifier and filter circuit to realize, its civil power that EMC circuit 111 is introduced is exported to transformer 131 and decompression voltage regulator 113 after over commutation and filtering; The output of decompression voltage regulator 113 is connected to the input of MCU, and the direct current that current rectifying and wave filtering circuit 112 is imported converts the direct current that MCU can use afterwards into through step-down and voltage stabilizing.
Particularly, among Fig. 2, Switching Power Supply 13 comprises: transformer 131, power supply vibration output circuit 132 and feedback loop 133.
Wherein, the input of transformer 131 is connected with the output of current rectifying and wave filtering circuit 112, and its output is connected with mainboard 14, and the voltage transitions that is used for current rectifying and wave filtering circuit 112 inputs is the operating voltage that mainboard 14 can use.Power supply vibration output circuit 132 is connected with transformer 131, is used for the duty cycle of switching through control transformer 131, makes transformer 131 outputs be fit to the voltage that mainboard 14 uses; One end of feedback loop 133 is connected on the connection line of transformer 131 and mainboard 14; Be used for the voltage of transformer output is sampled; And with the Voltage Feedback of sampling to power supply vibration output circuit 132; Power supply vibration output circuit 132 is through the duty cycle of switching of feedback voltage adjustment transformer 131, thereby the output voltage of stabilizing transformer 131 reaches the purpose of stably giving mainboard 14 power supplies.Need to prove; Feedback loop 133 can be realized by sample circuit and photoelectricity coupling circuit; One end of sample circuit is connected on the connection line of transformer 131 and mainboard 14; The other end is connected to the input of photoelectricity coupling circuit, and the output of photoelectricity coupling circuit is connected to the feedback pin of power supply vibration output circuit 132 and since through the photoelectricity coupling circuit with the Voltage Feedback of the sampling of sample circuit to power supply vibration output circuit 132; Therefore can realize thermally isolating, improve the fail safe of receiving terminal for digital television with ground, cold ground safety.
Particularly; Among Fig. 2, first photoelectrical coupler 15 comprises: first light-emitting diode 151 and first phototriode 152, and the high level end of this first light-emitting diode 151 is connected to the signal output part of mainboard 14; The low level end of first light-emitting diode 151 is connected to cold ground; When mainboard 14 when MCU12 transmits information, first light-emitting diode 151 is luminous, and the information of mainboard 14 form with light signal is passed; The collector electrode of first phototriode 152 is connected to the signal input part of MCU12; The emitter of first phototriode 152 is connected to thermally; When first light-emitting diode 151 is luminous; First phototriode 152 generates corresponding photogenerated current, passes to the signal input part of MCU12, thereby realizes the transmission of signal by mainboard 14 to MCU12.It is understandable that the structure of second photoelectrical coupler 16 and first photoelectrical coupler 15 are similar, it comprises: second light-emitting diode 161 and second phototriode 162, its connected mode is as shown in Figure 2, does not give unnecessary details at this.
Particularly, as shown in Figure 2, visibly different with Fig. 1 is to comprise among Fig. 2: infrared (IR) receiver 19, its be used for receiving extraneous (such as: the user sends through remote controller) standby signal or standby cancelling signal, and be transmitted to MCU12; In addition, MCU12 can also light LED (light-emitting diode) when holding state, to be in holding state at this moment to extraneous designation number television receive terminal.It is understandable that the standby signal that MCU12 receives also possibly be that mainboard passes through 15 transmissions of the first photoelectricity coupling circuit.
Please refer to Fig. 3, is the structural representation of the 3rd embodiment of receiving terminal for digital television of the present invention, comprising: main power source 11, MCU12, Switching Power Supply 13, mainboard 14, second electronic switch 18, first photoelectrical coupler 15 and second photoelectrical coupler 16.
Wherein, main power source 11 is used to the MCU12 power supply, and is mainboard 14 power supplies through Switching Power Supply 13 also.Switching Power Supply 13 has structure and the annexation identical with Switching Power Supply shown in Figure 2, does not give unnecessary details at this.
Second electronic switch 18 be connected on the feedback pin of power supply vibration output circuit 132 and thermally between, and receive the control of MCU12.Particularly; When MCU12 receives standby signal, control second electronic switch, 18 closures, the feedback pin that makes power supply vibration output circuit 132 with thermally be connected; Make the voltage of feedback pin of power supply vibration output circuit 132 the highest; Thereby the duty cycle of switching that makes power supply vibration output circuit 132 adjustment transformers 131 is to minimum, thereby the voltage that transformer 131 is exported is minimum, thereby reaches the purpose of standby; When MCU receives the standby cancelling signal; Controlling second electronic switch 18 breaks off; Make the feedback pin and thermally disconnection of power supply vibration output circuit 132, thereby make power supply vibration output circuit 132 operate as normal, receiving terminal for digital television is revived from holding state.
First photoelectrical coupler 15 and second photoelectrical coupler 16 are identical with second photoelectrical coupler 16 with first photoelectrical coupler 15 among Fig. 1, do not give unnecessary details at this.
Please refer to Fig. 4; It is the structural representation of the 4th embodiment of receiving terminal for digital television of the present invention; Fig. 4 is to the concrete refinement of Fig. 3 and replenishes; The distinctive points of itself and Fig. 2 is that the voltage of current rectifying and wave filtering circuit 112 outputs is connected directly to 131 transformer, does not promptly have first electronic switch between main power source 11 and the Switching Power Supply 13; For series connection between thermally receives second electronic switch 18 of MCU12 control, realize low-power consumption standby in the feedback pin of power supply vibration output circuit 132.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Above disclosedly be merely preferred embodiment of the present invention; Certainly can not limit the present invention's interest field with this; One of ordinary skill in the art will appreciate that all or part of flow process that realizes the foregoing description; And, still belong to the scope that invention is contained according to the equivalent variations that claim of the present invention is done.
Claims (9)
1. a receiving terminal for digital television comprises: main power source, MCU, Switching Power Supply and mainboard; Said main power source is connected with Switching Power Supply with said MCU respectively, is used to said MCU power supply, and is said main board power supply through said Switching Power Supply;
It is characterized in that, also comprise: first electronic switch, first photoelectrical coupler and second photoelectrical coupler;
Said first electronic switch is connected on the connection line of said main power source and Switching Power Supply, and receives the control of said MCU;
When said MCU receives standby signal; Control said first electronic switch and break off, cut off being connected of said main power source and Switching Power Supply, when said MCU receives the standby cancelling signal; Control said first electronic switch closes, recover being connected of said main power source and Switching Power Supply;
The input of said first photoelectrical coupler is connected to the signal output part of said mainboard, and its output is connected to the signal input part of said MCU;
The input of said second photoelectrical coupler is connected to the signal output part of said MCU, and its output is connected to the signal input part of said mainboard.
2. receiving terminal for digital television as claimed in claim 1 is characterized in that, said first photoelectrical coupler comprises: first light-emitting diode and first phototriode, and said second photoelectrical coupler comprises: second light-emitting diode and second phototriode;
The high level end of said first light-emitting diode is connected to the signal output part of said mainboard, and the low level end of said first light-emitting diode is connected to cold ground;
The collector electrode of said first phototriode is connected to the signal input part of said MCU, and the emitter of said first phototriode is connected to thermally;
The high level end of said second light-emitting diode is connected to the signal output part of said MCU, and the low level end of said second light-emitting diode is connected to thermally;
The collector electrode of said second phototriode is connected to the signal input part of said mainboard, and the emitter of said second phototriode is connected to cold ground.
3. receiving terminal for digital television as claimed in claim 1 is characterized in that, said main power source comprises: Electro Magnetic Compatibility EMC circuit, current rectifying and wave filtering circuit and decompression voltage regulator;
The input of said EMC circuit is connected with civil power, and output is connected with the input of said current rectifying and wave filtering circuit; The output of said current rectifying and wave filtering circuit is connected with the input of said decompression voltage regulator and the input of Switching Power Supply respectively; The output of said decompression voltage regulator is connected with the input of said MCU.
4. receiving terminal for digital television as claimed in claim 1 is characterized in that, said Switching Power Supply comprises: transformer, power supply vibration output circuit and feedback loop;
Said transformer is connected between said main power source and the mainboard, and the output of said transformer receives the control of said power supply vibration output circuit, and said power supply vibration output circuit is adjusted the duty cycle of switching of said transformer, controls the output of said transformer; One end of said feedback loop is connected to the connection line between said transformer and the mainboard; The other end is connected to the feedback pin of said power supply vibration output circuit; The output ground of said transformer is fed back to said power supply vibration output circuit, the output that makes said power supply vibration output circuit stablize said transformer.
5. like any described receiving terminal for digital television of claim 1-4, it is characterized in that, also comprise: infrared remote receiver;
Said infrared remote receiver is connected to said MCU, is used for the standby signal or the standby cancelling signal in the external world are sent to said MCU.
6. receiving terminal for digital television comprises: main power source, MCU, Switching Power Supply and mainboard, and said Switching Power Supply comprises: transformer, power supply vibration output circuit and feedback loop;
Said main power source is connected with transformer with said MCU respectively mutually; Be used to said MCU power supply, and be said main board power supply through said transformer, said power supply vibration output circuit is connected with said transformer; Through controlling the duty cycle of switching of said transformer; Control the output of said transformer, an end of said feedback loop is connected to the connection line between said transformer and the mainboard, and the other end is connected to the feedback pin of said power supply vibration output circuit; The output ground of said transformer is fed back to said power supply vibration output circuit, the output that makes said power supply vibration output circuit stablize said transformer;
It is characterized in that, also comprise: second electronic switch, first photoelectrical coupler and second photoelectrical coupler;
Said second electronic switch be connected on the feedback pin of said power supply vibration output circuit and thermally between, and receive the control of said MCU;
When said MCU receives standby signal; Control said second electronic switch with the feedback pin of said power supply vibration output circuit with thermally be connected; When said MCU receives the standby cancelling signal, control said second electronic switch and break off said power supply the vibration feedback pin of output circuit and being connected thermally;
The input of said first photoelectrical coupler is connected to the signal output part of said mainboard, and its output is connected to the signal input part of said MCU;
The input of said second photoelectrical coupler is connected to the signal output part of said MCU, and its output is connected to the signal input part of said mainboard.
7. receiving terminal for digital television as claimed in claim 6 is characterized in that, said first photoelectrical coupler comprises: first light-emitting diode and first phototriode, and said second photoelectrical coupler comprises: second light-emitting diode and second phototriode;
The high level end of said first light-emitting diode is connected to the signal output part of said mainboard, and the low level end of said first light-emitting diode is connected to cold ground;
The collector electrode of said first phototriode is connected to the signal input part of said MCU, and the emitter of said first phototriode is connected to thermally;
The high level end of said second light-emitting diode is connected to the signal output part of said MCU, and the low level end of said second light-emitting diode is connected to thermally;
The collector electrode of said second phototriode is connected to the signal input part of said mainboard, and the emitter of said second phototriode is connected to cold ground.
8. receiving terminal for digital television as claimed in claim 6 is characterized in that, said main power source comprises: EMC circuit, current rectifying and wave filtering circuit and decompression voltage regulator;
The input of said EMC circuit is connected with civil power, and output is connected with the input of said current rectifying and wave filtering circuit; The output of said current rectifying and wave filtering circuit is connected with the input of said decompression voltage regulator and the input of transformer respectively; The output of said decompression voltage regulator is connected with the input of said MCU.
9. like any described receiving terminal for digital television among the claim 6-8, it is characterized in that, also comprise: infrared remote receiver;
Said infrared remote receiver is connected to said MCU, is used for the standby signal or the standby cancelling signal in the external world are sent to said MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110386761.1A CN102404620B (en) | 2011-11-29 | 2011-11-29 | Receiving terminal of digital television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110386761.1A CN102404620B (en) | 2011-11-29 | 2011-11-29 | Receiving terminal of digital television |
Publications (2)
| Publication Number | Publication Date |
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| CN102404620A true CN102404620A (en) | 2012-04-04 |
| CN102404620B CN102404620B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110386761.1A Expired - Fee Related CN102404620B (en) | 2011-11-29 | 2011-11-29 | Receiving terminal of digital television |
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| CN (1) | CN102404620B (en) |
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| CN104363489A (en) * | 2014-12-03 | 2015-02-18 | 四川中时代科技有限公司 | EOC (Ethernet over coax) and digital television receiving wireless terminal set top box equipment |
| CN109951076A (en) * | 2019-04-11 | 2019-06-28 | 成都盛芯微科技有限公司 | A kind of adaptive dutyfactor adjusting method of Switching Power Supply reducing system sleep power consumption |
| CN113163237A (en) * | 2020-01-22 | 2021-07-23 | 海信视像科技股份有限公司 | Display device |
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| CN113163237A (en) * | 2020-01-22 | 2021-07-23 | 海信视像科技股份有限公司 | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102404620B (en) | 2015-07-01 |
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