CN102724453A - Television - Google Patents
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- CN102724453A CN102724453A CN2012102242627A CN201210224262A CN102724453A CN 102724453 A CN102724453 A CN 102724453A CN 2012102242627 A CN2012102242627 A CN 2012102242627A CN 201210224262 A CN201210224262 A CN 201210224262A CN 102724453 A CN102724453 A CN 102724453A
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Abstract
The invention provides a television which is applicable to the television field and comprises a processor, a carrier coupling circuit used for receiving demodulated signals sent by a low-voltage power line, a filter circuit and a signal demodulation circuit, wherein the filter circuit is connected at the output end of the carrier coupling circuit and used for performing filter processing for the demodulated signals, and the signal demodulation circuit is connected with the filter circuit and used for demodulating originally modulated signals from the filtered demodulated signals and sending the signals to the processor for decoding. In the television, power line carriers are used for receiving the modulated signals transmitted by the power line in communication mode, effective data information is output to a television system through the carrier coupling circuit, the filter circuit and the demodulation circuit, and data are decoded at a television end and displayed on a television screen. Transmitting of all signals can be completed simply through the power line, so that wires for connecting the television and other devices are saved. Except for a power grid, no other signal networks are needed to be added so that national network covering cost is saved. Compared with optical fiber communication and open wire communication, the television is low in cost.
Description
Technical field
The invention belongs to electronic technology field, relate in particular to a kind of TV.
Background technology
Low-voltage powerline carrier communication is to utilize low-voltage distribution wire (380/220V subscribers feeder) as information transmitting medium, the analog or digital signal is carried out a kind of specific communication mode of voice or transfer of data through carrier system.
Power network is one of national basis network as the dedicated network of power delivery.The construction quality of its network, mechanical strength, safety economy technical indicator etc. are all through proving reasonably optimizing repeatedly.Its coverage rate is extensively, capacity is big is that any network is all incomparable.Therefore, power network is a kind of rare resource of high-quality.Power line carrier technology has developed at home and has used for many years, suitable complete and ripe of technical standard and rule of management.Along with the continuous development of power line carrier technology, the low voltage power line carrier technology has also obtained development at full speed, for later stages four net merges or many nets merge and lay a solid foundation.
Yet electric power networks is not effectively used, and existing TV signal transmission needs the dedicated network passage, for utilizing power network communication, and the transmission network that has been equivalent to again cloth, the wasting of resources is very serious; Present existing domestic electric appliances does not almost have the electrification line as signalling channel, causes the bottleneck of PLC technology development.
Summary of the invention
The object of the present invention is to provide a kind of TV that can realize power line carrier, PLC through low-voltage power line.
The present invention is achieved in that a kind of TV, comprises processor, also comprises:
Be used to receive the carrier wave coupling circuit of the modulated signal that low-voltage power line transmits;
Be connected the output of said carrier wave coupling circuit, said modulated signal carried out the filter circuit of Filtering Processing; And
Be connected with said filter circuit, the former modulation signal of demodulation also sends said former modulation signal to signal demodulating circuit that said processor is decoded from filtered modulated signal.
Further, said TV also comprises: the signal power amplifying circuit that is connected with said signal demodulating circuit with said carrier wave coupling circuit respectively.
Further, said TV also comprises: input power control circuit, and its input is connected with processor, and output is connected with said signal power amplifying circuit.
Further, be connected through the EMI bus between said signal demodulating circuit and the said processor.
Further, said TV also comprises: the SD card that is connected with said processor respectively, PCMCI card, HDMI interface, network interface and audio frequency and video input/output interface.
In the present invention; Utilize power line carrier communication to receive modulated signal through power line transmission; Through carrier wave coupling circuit, filter circuit, demodulator circuit active data information is outputed in the television system, and in the decoding of TV end data and be presented on the video screen; Only just can accomplish the transmission of all signals, save the wire rod that is connected with miscellaneous equipment through power line; Except that electric power networks, not needing increases other signal network again, has saved national network and has covered cost; Compare with open wire communication with optical fiber communication, cost is low.
Description of drawings
Fig. 1 is the principle schematic of TV provided by the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
TV provided by the invention utilizes power-line carrier communication to receive the modulated signal through power line transmission; Through carrier wave coupling circuit, filter circuit, demodulator circuit active data information is outputed in the television system, and finally in the decoding of TV end data and be presented on the video screen.
Fig. 1 shows the modular structure principle of TV provided by the invention, for the ease of explanation, only shows the part relevant with the present invention.
Wherein, Carrier wave coupling circuit 14 has the function of high-pass filtering; Noise interferences that can filtering 220V_AC/50Hz (or 110VAC/60Hz); Suppress instantaneous voltage and impact (as: overvoltage that thunderbolt causes, the surge of line voltage and peak voltage, and static discharge voltage etc.) and can receive expeditiously, to realizing minimum decay and optimum reception from the useful signal on the power line from the signal on the low-voltage power line 2.
In the present invention, be connected through the EMI bus between signal demodulating circuit 16 and the processor 11; Wherein EMI (external memory interface) bus is the data/address bus of a kind of standard of processor; Which kind of which kind of communicate through this bus between processor 11 and the signal demodulating circuit 16, as for having data format or data protocol to see mainly what demodulation module can export; In addition, satisfy a kind of standard as long as signal demodulating circuit 16 is finally exported to the data of processor 11: processor 11 can recognition data with signal demodulating circuit 16.
Adopt TV provided by the invention, TV signal can transmit through power line, saves network coverage cost; In the terminal applies field, being that four nets merge or how net merges lays technical foundation, realizes many network applications of power line carrier simultaneously.
As shown in Figure 1, low-voltage power line 2 is transmission networks of power carrier data-signal, and also is low-voltage power network, for television system provides electric power.
In the present invention, TV 1 enables to receive the TV data signal that transmits through low-voltage power line 2 through carrier wave coupling circuit 14, filter circuit 15 and signal demodulating circuit 16, realizes the application of power line carrier, PLC mode at TV domain.
In the present invention; TV 1 also comprises: input power control circuit 12 and signal power amplifying circuit 13; The input of input power control circuit 12 is connected with processor 11; The output of input power control circuit 12 is connected with the control end of signal power amplifying circuit 13, and the input of signal power amplifying circuit 13 is connected with carrier wave coupling circuit 14, and the output of signal power amplifying circuit 13 is connected with signal demodulating circuit 16; Processor 11 provides instruction for input power control circuit 12, and input power control circuit 12 has corresponding power control action to export to signal power amplifying circuit 13 by its instruction that receives; Signal power amplifying circuit 13 has the effect of frequency-selecting and amplification: under tuning state; Because the existence of series resonance in the signal power amplifying circuit 13; Resonance impedance is minimum, and this moment, signal power amplifying circuit 13 can waltz through frequency-selecting after the signal process that receives is amplified; Under the nonresonant state, resonance impedance is very big, and the signal that signal power amplifying circuit 13 receives basically can not be through frequency-selecting.Input power control circuit 12 can also guarantee that input voltage is not dragged down, thereby guarantees the whole TV system operate as normal, and input power control circuit 12 the most outstanding advantages are to guarantee that low-voltage can pass through; Can also adjust its inner corresponding control unit and control output current, thereby play the effect of not only pressure limiting but also current limliting.
As shown in Figure 1, transformer 3 is to convert low-voltage AC into low-voltage DC, required various direct currents is provided and is whole TV 1 power supply by power supply module 4.
In the present invention, TV 1 also comprises: Flash, SD card, PCM CI card, HDMI interface, network interface, audio frequency and video input/output interface and display part.Its groundwork principle is identical with existing TV, all is decoding, the demonstration work of mainly accomplishing audio-video document and other type file.Wherein SD card, PCM CI card, HDMI interface, network interface and audio frequency and video input/output interface are connected with processor 11 respectively.With respect to traditional tv, not only can avoid the various problem of television signal line, but also can realize, broadband network inserts, and is a good direction of TV future development.
TV 1 provided by the invention enables to receive the TV data that transmits through low-voltage power line 2 through carrier wave coupling circuit 14, filter circuit 15 and signal demodulating circuit 16; Only just can accomplish the transmission of all signals through power line, saved with miscellaneous equipment between be connected wire rod; Except that electric power networks, do not need to increase again other signal network, to compare with open wire communication with optical fiber communication, cost is low.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a TV comprises processor, it is characterized in that, also comprises:
Be used to receive the carrier wave coupling circuit of the modulated signal that low-voltage power line transmits;
Be connected the output of said carrier wave coupling circuit, said modulated signal carried out the filter circuit of Filtering Processing; And
Be connected with said filter circuit, the former modulation signal of demodulation also sends said former modulation signal to signal demodulating circuit that said processor is decoded from filtered modulated signal.
2. TV as claimed in claim 1 is characterized in that, said TV also comprises:
The signal power amplifying circuit that is connected with said signal demodulating circuit with said carrier wave coupling circuit respectively.
3. TV as claimed in claim 2 is characterized in that, said TV also comprises: input power control circuit, and its input is connected with processor, and output is connected with said signal power amplifying circuit.
4. TV as claimed in claim 1 is characterized in that, is connected through the EMI bus between said signal demodulating circuit and the said processor.
5. TV as claimed in claim 1 is characterized in that, said TV also comprises: the SD card that is connected with said processor respectively, PCM CI card, HDMI interface, network interface and audio frequency and video input/output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102242627A CN102724453A (en) | 2012-05-16 | 2012-06-29 | Television |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220221704.8 | 2012-05-16 | ||
| CN201220221704 | 2012-05-16 | ||
| CN2012102242627A CN102724453A (en) | 2012-05-16 | 2012-06-29 | Television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102724453A true CN102724453A (en) | 2012-10-10 |
Family
ID=46950103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102242627A Pending CN102724453A (en) | 2012-05-16 | 2012-06-29 | Television |
Country Status (1)
| Country | Link |
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| CN (1) | CN102724453A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616629A (en) * | 2015-01-21 | 2015-05-13 | 苏州市职业大学 | Power carrier-based electronic price tag |
| CN112882120A (en) * | 2021-01-29 | 2021-06-01 | 深圳市同创机电一体化技术有限公司 | Novel line synchronization system for measuring grating lines |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201213292Y (en) * | 2008-03-04 | 2009-03-25 | 深圳市国电科技通信有限公司 | Digital video transmission device based on electric line communication |
| CN101702759A (en) * | 2009-10-23 | 2010-05-05 | 深圳创维－Rgb电子有限公司 | Home entertainment television and wideband access method |
| CN201639687U (en) * | 2010-03-05 | 2010-11-17 | 四川长虹电器股份有限公司 | Internet-connected television internet surfing system |
-
2012
- 2012-06-29 CN CN2012102242627A patent/CN102724453A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201213292Y (en) * | 2008-03-04 | 2009-03-25 | 深圳市国电科技通信有限公司 | Digital video transmission device based on electric line communication |
| CN101702759A (en) * | 2009-10-23 | 2010-05-05 | 深圳创维－Rgb电子有限公司 | Home entertainment television and wideband access method |
| CN201639687U (en) * | 2010-03-05 | 2010-11-17 | 四川长虹电器股份有限公司 | Internet-connected television internet surfing system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616629A (en) * | 2015-01-21 | 2015-05-13 | 苏州市职业大学 | Power carrier-based electronic price tag |
| CN112882120A (en) * | 2021-01-29 | 2021-06-01 | 深圳市同创机电一体化技术有限公司 | Novel line synchronization system for measuring grating lines |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121010 |
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| RJ01 | Rejection of invention patent application after publication |