CN2766255Y - Optical fibre connection device - Google Patents
Optical fibre connection device Download PDFInfo
- Publication number
- CN2766255Y CN2766255Y CN 200520054981 CN200520054981U CN2766255Y CN 2766255 Y CN2766255 Y CN 2766255Y CN 200520054981 CN200520054981 CN 200520054981 CN 200520054981 U CN200520054981 U CN 200520054981U CN 2766255 Y CN2766255 Y CN 2766255Y
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- CN
- China
- Prior art keywords
- electricity
- light
- computer
- optical fiber
- converting circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an optical fiber connection device which is arranged between a computer and various sonic devices. The electromagnetic interference of the inside of a computer case is effectively avoided, and the quality of the computer when sound is played is enhanced. The entire system has a good anti-electromagnetic radiation effect. The rear end of a digital audio output interface of a host computer is provided with an electricity / light converting circuit, and a light / electricity converting circuit of an input interface of the sonic device is orderly connected with a decoder (selectable), a digital / analogue conversion circuit and an amplifying output. One end of an optical fiber line is connected with an electricity / optical converting circuit, and the other end of the optical fiber line is connected with an optical / electricity converting circuit. The sonic device receives optical signals through the optical fiber line, and conducts light / electricity conversion and digital / analogue conversion. Sound signals are decoded, and are enlarged.
Description
Technical field
The utility model relates to the fiber-optic connection between computer and all kinds of stereo set.
Background technology
Computer is played a greater and greater role in office, domestic environments, and one of its critical function is a playing back music.Generally speaking, computer sends sound to the multimedia sound equipment of connection, the broadcast of professional sound equipment as source of sound.The audio process chip of computer after finishing the digital-to-analog conversion, sends the voice signal of simulating to sound equipment and plays.Finish the digital-to-analog conversion in computer inside, be subjected to the interference of computer internal electromagnetic radiation easily.Computer is the digital device of standard, inevitably can produce a large amount of electromagnetic radiation.The general mode that adopts electromagnetic screen is limited in cabinet inside with electromagnetic radiation, and the D/A conversion circuit that is positioned at cabinet inside inevitably can be received interference.
The utility model content
The purpose of this utility model provides a kind of electromagnetic interference (EMI) of avoiding computer housing inside, the quality when improving computer and playing sound, and whole system has the computer of anti-electromagnetic-radiation effect and the fiber-optic connection between all kinds of stereo set preferably.
The purpose of this utility model can reach by following measure:
Fiber-optic connection between this computer and all kinds of stereo set, its special character is: the built-in electricity/light change-over circuit of host computer connects the built-in light/power conversion circuit of sound equipment through optical fiber cable.
The purpose of this utility model can also reach by following measure:
The rear end of the DAB output interface of host computer is provided with one electricity/light change-over circuit; Light/the power conversion circuit of stereo set input interface connects D/A conversion circuit in regular turn, amplifies output; One termination of optical fiber cable is gone into electricity/light change-over circuit, and the other end of optical fiber cable inserts light/power conversion circuit.
The utility model has the following advantages compared to existing technology:
1. improve the quality that computer plays sound.
2. whole system has anti-electromagnetic-radiation effect preferably.
Description of drawings
Fig. 1 is the circuit block diagram of the fiber-optic connection between the utility model computer and all kinds of stereo set.
Fig. 2 is the connection layout of the fiber-optic connection between the utility model computer and all kinds of stereo set.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
See also accompanying drawing, fiber-optic connection between this computer and all kinds of stereo set, be provided with electricity/light change-over circuit 2 that a sound signal with numeral transfers light signal in the rear end of the S/PDIF digital output interface 1 of its host computer acoustic processing chip and be provided with light/power conversion circuit 5 and D/A conversion circuit 6, be connected by optical fiber cable 3 between the light/power conversion circuit 5 of the electricity of host computer/light change-over circuit 2 and sound equipment in the corresponding interface rear end of sound equipment 4.Sound equipment 4 is accepted light signal by optical fiber cable 3, in regular turn light signal is carried out light/electricity conversion 5 and carries out numeral/analog-converted 6, and demoder 7 decodes voice signal, amplifies output 8.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim scope change and modify, and all should belong to the covering scope of the utility model claim.
Claims (2)
1. the fiber-optic connection between a computer and all kinds of stereo set is characterized in that: the built-in electricity/light change-over circuit of host computer connects the built-in light/power conversion circuit of sound equipment through optical fiber cable.
2. fiber-optic connection according to claim 1 is characterized in that: the rear end of the DAB output interface of host computer is provided with one electricity/light change-over circuit; Light/the power conversion circuit of stereo set input interface connects D/A conversion circuit in regular turn, amplifies output; One termination of optical fiber cable is gone into electricity/light change-over circuit, and the other end of optical fiber cable inserts light/power conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520054981 CN2766255Y (en) | 2005-02-23 | 2005-02-23 | Optical fibre connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520054981 CN2766255Y (en) | 2005-02-23 | 2005-02-23 | Optical fibre connection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2766255Y true CN2766255Y (en) | 2006-03-22 |
Family
ID=36606918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520054981 Expired - Fee Related CN2766255Y (en) | 2005-02-23 | 2005-02-23 | Optical fibre connection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2766255Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012798A (en) * | 2010-11-26 | 2011-04-13 | 中国航天科工集团第二研究院七○六所 | Photoelectric-isolating low-electromagnetic leakage display interface |
-
2005
- 2005-02-23 CN CN 200520054981 patent/CN2766255Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012798A (en) * | 2010-11-26 | 2011-04-13 | 中国航天科工集团第二研究院七○六所 | Photoelectric-isolating low-electromagnetic leakage display interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |