CN201976191U - Camera module capable of transmitting digital signals in long distance - Google Patents
Camera module capable of transmitting digital signals in long distance Download PDFInfo
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- CN201976191U CN201976191U CN 201120075459 CN201120075459U CN201976191U CN 201976191 U CN201976191 U CN 201976191U CN 201120075459 CN201120075459 CN 201120075459 CN 201120075459 U CN201120075459 U CN 201120075459U CN 201976191 U CN201976191 U CN 201976191U
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Abstract
The utility model provides a camera module capable of transmitting digital signals in a long distance, which belongs to the technical field of high-definition image digital signals and comprises an image sensor, an encoding integrated circuit, a decoding integrated circuit and an LDO (low dropout) circuit. The encoding integrated circuit is used for converting TTL (transistor-transistor logic) signals output from the image sensor into LVDSs (low voltage differential signals), the decoding integrated circuit is used for converting the LVDSs to output from the encoding integrated circuit into TTL signals, and the LDO circuit is used for converting 5-volt direct-current voltage into 3.3-volt direct-current voltage and providing the camera module with power. The camera module is simple and reliable in circuit and high in front-rear end compatibility, TTL/LVDS conversion integrated circuit chips are used for encoding and decoding, and thereby compatibility problem is solved no matter whether the camera module is fitted to a front-end CMOS (complementary metal-oxide-semiconductor) camera part or fitted to a rear-end image processing output end.
Description
Technical field
The utility model belongs to high-definition image digital signal technique field, the improvement of the transmission circuit of the design digital signal of more clearly saying so.
Background technology
Along with the resolution of imageing sensor improves constantly, volume of transmitted data is increasing between digital camera and the image processing system, anti-interference requirement is also more and more higher, but traditional image data transmission mode, as transmission of: parallel data or Serial Data Transfer Mode, or transmission range is extremely short and the decay and the interference that inevitably produce signal; Transmission speed is extremely slow, is difficult to form coherent image. all unable complete, reproduce the high-definition screen that the front end high definition imageing sensor is obtained really.
The utility model will provide a kind of camera module of growing the Distance Transmission digital signal, change this state of the art.
The utility model content
The purpose of this utility model is the many disadvantages that has overcome transfer of data between above-mentioned digital camera and the image processing system, and a kind of camera module of growing the Distance Transmission digital signal is provided.
A kind of camera module of growing the Distance Transmission digital signal, it includes imageing sensor, and this module also includes following part:
The coding integrated circuit, it is to be used for and will to come from the TTL signal of above-mentioned imageing sensor output, is converted to the circuit structure of LVDS signal;
Decoding integrated circuit, it is to be used for and will to come from the LVDS signal of above-mentioned coding integrated circuit output, is converted to the circuit structure of TTL signal;
The LDO circuit, it is to be used for 5 volts of direct voltages are converted to 3.3 volts of direct voltages, and the circuit structure of electric energy is provided for this camera module.
Further, described a kind of camera module of growing the Distance Transmission digital signal also has following technical characterictic:
Described coding integrated circuit is preferably MAX9206.
Described decoding integrated circuit is preferably MAX9235.
Described a kind of camera module of growing the Distance Transmission digital signal also includes, and is used to receive the TTL signal that comes from above-mentioned decoding integrated circuit conversion, and to its image processing center of handling.
Advantage of the present utility model is: this camera module of growing the Distance Transmission digital signal described in the utility model, circuit is simple and reliable, in the camera top, the data of working out are imported the coded portion including components therein of minimum essential requirement into the rear end decoder module by high speed stube cable line.The front and back end is compatible high, and TTL/LVDS converter ic chip is adopted in encoding and decoding, the front end CMOS camera parts of no matter arranging in pairs or groups, and there is not compatibility issue in the rear end image processing outlet terminal of perhaps arranging in pairs or groups.With low cost, the LVDS data antijamming capability after the establishment is strong, and high-fidelity transmission cable that need not be expensive can adopt common high speed cable just passable.Economic solution the long Distance Transmission problem of high resolution graphics image signal and interference and the attenuation problem in the transmission course, improved image display effect, at high-definition image signal long-distance transmission field very big Practical significance is arranged.
Description of drawings
Fig. 1 is a kind of structural representation of growing the camera module of Distance Transmission digital signal described in the utility model.
Embodiment
Below with reference to accompanying drawing, the utility model is described further in conjunction with specific embodiment.
For solving the problem of transfer of data between digital camera and the image processing system, the technical program provides a kind of LVDS interface module, its circuit part adopts two LVDS coding integrated circuit MAX9206 and decoding integrated circuit MAX9235, adopt special encoding and decoding, view data is included in the LVDS form, reached the purpose of high-speed transfer.
The explanation of Fig. 1:
Join shown in Figure 1ly, showed a kind of primary structure of growing the camera module 100 of Distance Transmission digital signal described in the utility model, include imageing sensor, printed circuit board (PCB), and the electronic circuit that is installed on the printed circuit board (PCB) constitutes.Concrete, imageing sensor 110 has been gathered image information, and this image information is converted to the signal of telecommunication outputs to coding integrated circuit 120, i.e. integrated circuit (IC) chip MAX9206 with the Transistor-Transistor Logic level form; After coding integrated circuit (IC) chip MAX9206 received TTL format signal from imageing sensor 110, portion became the decoding integrated circuit 130 that passes to the rear end behind the LVDS signal by transmission line, i.e. integrated circuit (IC) chip MAX9235 with the TTL conversion of signals within it; Be converted into by LVDS decoding integrated circuit MAX9235 again and deliver to image processing center 140 after the digital signal of Transistor-Transistor Logic level form and carry out further analyzing and processing.LDO circuit 150 is used for the direct voltage of 5V is become the 3.3V direct voltage, for imageing sensor 110, coding integrated circuit 120, decoding integrated circuit 130 and other circuit part provide electric energy.
More than be to description of the present utility model and non-limiting, based on other execution mode of the utility model thought, all among protection range of the present utility model.
Claims (4)
1. the camera module that can grow the Distance Transmission digital signal, it includes imageing sensor, it is characterized in that, and this module also includes following part:
The coding integrated circuit, it is to be used for and will to come from the TTL signal of above-mentioned imageing sensor output, is converted to the circuit structure of LVDS signal;
Decoding integrated circuit, it is to be used for and will to come from the LVDS signal of above-mentioned coding integrated circuit output, is converted to the circuit structure of TTL signal;
The LDO circuit, it is to be used for 5 volts of direct voltages are converted to 3.3 volts of direct voltages, and the circuit structure of electric energy is provided for this camera module.
2. a kind of camera module of growing the Distance Transmission digital signal according to claim 1 is characterized in that described coding integrated circuit is preferably MAX9206.
3. a kind of camera module of growing the Distance Transmission digital signal according to claim 1 is characterized in that described decoding integrated circuit is preferably MAX9235.
4. a kind of camera module of growing the Distance Transmission digital signal according to claim 1, it is characterized in that, described a kind of camera module of growing the Distance Transmission digital signal, also include, be used to receive the TTL signal that comes from above-mentioned decoding integrated circuit conversion, and to its image processing center of handling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120075459 CN201976191U (en) | 2011-03-21 | 2011-03-21 | Camera module capable of transmitting digital signals in long distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120075459 CN201976191U (en) | 2011-03-21 | 2011-03-21 | Camera module capable of transmitting digital signals in long distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201976191U true CN201976191U (en) | 2011-09-14 |
Family
ID=44581290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120075459 Expired - Fee Related CN201976191U (en) | 2011-03-21 | 2011-03-21 | Camera module capable of transmitting digital signals in long distance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201976191U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883527A (en) * | 2015-06-04 | 2015-09-02 | 段然 | Method for converting MIPI interface into HDMI interface and application system thereof |
-
2011
- 2011-03-21 CN CN 201120075459 patent/CN201976191U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883527A (en) * | 2015-06-04 | 2015-09-02 | 段然 | Method for converting MIPI interface into HDMI interface and application system thereof |
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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: 20110914 Termination date: 20140321 |