CN202168144U - 4-path video modulator - Google Patents
4-path video modulator Download PDFInfo
- Publication number
- CN202168144U CN202168144U CN 201120246277 CN201120246277U CN202168144U CN 202168144 U CN202168144 U CN 202168144U CN 201120246277 CN201120246277 CN 201120246277 CN 201120246277 U CN201120246277 U CN 201120246277U CN 202168144 U CN202168144 U CN 202168144U
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- modulator
- decoding
- signal
- chip microcomputer
- utility
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Abstract
The utility model relates to the field of electronic technology, and especially relates to a 4-path video modulator which is composed of a one-chip microcomputer, decoding chips, hybrid circuits, amplifying circuits. The output terminal of the one-chip microcomputer is connected with at least two decoding chips in order, and each decoding chip is connected with the hybrid circuit. The hybrid circuit outputs a converted signal via the amplifying circuit. The 4-path video modulator adopts four decoding chips, so different television channels can be watched in four rooms conveniently at the same time. The transmission signal of the modulator is stable, and the transmission speed of the modulator is rapid. Besides, the modulator can convert a broadcast and TV digital signal into a cable television signal conveniently.
Description
Technical field
The utility model relates to the field of electronic technology, especially a kind of 4 road video modulators.
Background technology
Along with development of science and technology, the television transmission signal of a lot of countries begins by analog signal to digital signal transition, and family's receiving digital signals needs special-purpose STB; The audio signal that could become television set directly to receive digital signal decoding like this, still, a lot of families all have two even multiple TV set more; And dispersed placement is in several rooms; Every television set all needs STB and decodes, so many STBs of the just necessary purchase of these users, has increased the weight of burden; In addition; These have the user of multiple TV set if watch the program of DVD player, also can only be placed with again in the room of DVD player to watch, and not very convenient just sometimes.
Problem to above-mentioned existence; The audio-video signal that the user who has utilizes modulator that STB or DVD player are sent here is modulated on the radiofrequency signal of TV band; Utilize radio frequency line the radiofrequency signal that modulates to be transported to the television set in each room then; There is the signal source of uncontrollable STB of user or DVD player etc. in such modulator, can only in the room that is placed with STB or DVD player, go to the control signal source, uses very inconvenient.
The utility model content
The technical problem that the utility model will solve is: in order to overcome the above-mentioned middle problem that exists, 4 road video modulators in a kind of user's of convenience controller set-top box signal source are provided.
The utility model solves the technical scheme that its technical problem adopted: a kind of 4 road video modulators; It is characterized in that: form by single-chip microcomputer, decoding chip, hybrid circuit and amplifying circuit; Be connected with at least two decoding chips in turn on the described single-chip microcomputer output; Each decoding chip all is connected with hybrid circuit, the signal output after hybrid circuit will be changed through amplifying circuit.
To supply four rooms to watch different television channels simultaneously in order making things convenient for, to be connected with four decoding chips on the described single-chip microcomputer output in turn.
The beneficial effect of the utility model is: 4 road video modulators of the utility model; Adopt four decoding chips; Can make things convenient for four rooms to watch different television channels simultaneously simultaneously, this modulator steady signal transmission, transmission rate are fast and can conveniently broadcasting and TV digital signal and cable TV signal be changed each other.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the structured flowchart of the utility model.
1. single-chip microcomputers among the figure, 2. decoding chip, 3. hybrid circuit, 4. amplifying circuit.
Embodiment
Combine accompanying drawing that the utility model is done further detailed explanation now.These accompanying drawings are the sketch map of simplification, the basic structure of the utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
4 road video modulators as shown in Figure 1; Form by single-chip microcomputer 1, decoding chip 2, hybrid circuit 3 and amplifying circuit 4; Be connected with four decoding chips 2 on single-chip microcomputer 1 output in turn; Each decoding chip 2 all is connected with hybrid circuit 3, the signal output after hybrid circuit 3 will be changed through amplifying circuit 4.
The operation principle of 4 road video modulators of the utility model: vision signal is decoded simultaneously through four decoding chips 2 of single-chip microcomputer 1 control and is exported four signals; Decoded four vision signals are through hybrid circuit 3; Broadcasting and TV top box of digital machine conversion of signals is become cable TV signal, and mixed signal carries out the signal transmission after amplifying through amplifying circuit 4.
With above-mentioned desirable embodiment according to the utility model is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must confirm its technical scope according to the claim scope.
Claims (2)
1. video modulator; It is characterized in that: form by single-chip microcomputer (1), decoding chip (2), hybrid circuit (3) and amplifying circuit (4); Be connected with at least two decoding chips (2) in turn on described single-chip microcomputer (1) output; Each decoding chip (2) all is connected with hybrid circuit (3), the signal output after hybrid circuit (3) will be changed through amplifying circuit (4).
2. 4 road video modulators according to claim 1 is characterized in that: be connected with four decoding chips (2) in turn on described single-chip microcomputer (1) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120246277 CN202168144U (en) | 2011-07-13 | 2011-07-13 | 4-path video modulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120246277 CN202168144U (en) | 2011-07-13 | 2011-07-13 | 4-path video modulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202168144U true CN202168144U (en) | 2012-03-14 |
Family
ID=45803945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120246277 Expired - Fee Related CN202168144U (en) | 2011-07-13 | 2011-07-13 | 4-path video modulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202168144U (en) |
-
2011
- 2011-07-13 CN CN 201120246277 patent/CN202168144U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20120713 |