CN204231573U - A kind of device detecting TTL video signal quality - Google Patents
A kind of device detecting TTL video signal quality Download PDFInfo
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Abstract
The utility model belongs to display field and the field tests of liquid crystal module, is specifically related to a kind of device detecting TTL video signal quality.It comprises for receiving TTL vision signal to its operation that is terminated, the TTL transport module that detects the electrical characteristic of the TTL vision signal after terminated operation, for the RGB data detection module that detects the view data of TTL vision signal and the detection control module for sending parameter and control signal.The utility model can detect the TTL vision signal that video source produces, simple to operate, economical and practical, not only integrated level is high, and reliable operation, antijamming capability are strong, and detecting reliability and the efficiency of TTL liquid crystal module can also be promoted, reduce its equipment cost and production cost.
Description
Technical field
The utility model belongs to display field and the field tests of liquid crystal module, is specifically related to a kind of device detecting TTL video signal quality.
Background technology
Liquid crystal display module (Liquid Crystal Display Module, hereinafter referred to as module) and the use of relevant liquid crystal display (hereinafter referred to as equipment) very general, simultaneously also due to TTL (Low-Voltage Differential Signaling, Low Voltage Differential Signal) signal stabilization is reliable, biography speed is high, power consumption is lower, and a lot of module and equipment all pass through the display interface adopting this signal as receiver, video image.
Carry out producing at module and equipment thereof, debug, videograph process time need to produce by video signal source or video adapting plate (being all called for short video source below) TTL vision signal to provide module displays signal source to it, therefore guarantee that the vision signal correctness that video source produces and reliability are the prerequisites ensureing module displays.
At present, market there is no for video source field correctness, the reliability that unified standard guarantees the TTL vision signal exported, the detection of the picture signal that video source exports all is identified shown image pixel one by one by human eye, manually cut figure and continue to judge.This detection mode operating personnel not only easily judge by accident, are difficult to localized reason place when there is display problem; And be easily subject to the subjective impact of people by eye recognition, operating personnel are for a long time facing to image, and eyes are very easily tired, and these all can impact testing result; Again need build test platform when changing module, thus cause inefficiency, complex operation.
Therefore a kind of technical scheme is needed to detect, without the need to artificial judgement the TTL picture signal that video source produces reliable, errorless, efficiently.
Utility model content
The purpose of this utility model is exactly the deficiency existed to solve above-mentioned background technology, provides a kind of device detecting TTL video signal quality, and it has, and reliability is high, nothing erroneous judgement, feature simple to operate, detection efficiency is high, cost is low.
The technical solution adopted in the utility model is: a kind of device detecting TTL video signal quality, comprising:
For sampling to the electrical characteristic of TTL vision signal, the electric parameter and the TTL electric parameter benchmark that obtain TTL vision signal carry out contrasting the TTL transport module detected;
Detect for every frame RGB data is carried out contrast with raw image data successively, export the RGB data detection module of electric testing result signal and view data testing result signal;
For sending the detection control module of controling parameters and control signal, the electric testing result signal of reception and view data testing result signal.
The control end of described detection control module connects the control end of described TTL transport module and RGB data detection module respectively, the second input that first output of described TTL transport module connects the first input end of described RGB data detection module, the second output connects described RGB data detection module, the output of described RGB data detection module connects the signal receiving end of detection control module.
Further, described TTL transport module comprises:
TTL for the operation that is terminated to TTL vision signal transmits matching module;
The electric sampling and Quantifying module of TTL signal for sampling to the electrical characteristic of TTL vision signal;
Carry out contrasting the electric detection module of the TTL detected for the electrical value of the TTL vision signal by sampling and TTL electric parameter benchmark;
Described TTL transmits the data output end that output connects described TTL signal electric sampling and Quantifying module input, data receiver connects described detection control module of matching module, the output of described TTL signal electric sampling and Quantifying module connects the input of the electric detection module of TTL, the control end that output connects the second input of described RGB data detection module, control end connects described detection control module of the electric detection module of TTL.
Further, described TTL transport module also comprises for carrying out to the TTL vision signal after the operation that is terminated the TTL signal shaping module that process is amplified in shaping, and its input connects described TTL and transmits the output of matching module, output connect described RGB data detection module first input end as the first output of TTL transport module.
Further, described RGB data detection module comprises:
For the every frame RGB data of buffer memory successively, export the rgb signal buffer control module of the good every frame RGB data of buffer memory successively simultaneously;
For the every width raw image data of buffer memory successively, export the original image buffer control module of the good every width raw image data of buffer memory successively simultaneously;
Carry out synchronizing relay operation for a line RGB data that will read and a line raw image data, make the Data Detection fifo module of its synchronism output;
The RGB data detection module detected is contrasted for every frame RGB data being carried out with raw image data successively;
For receiving the signal detecting result output module of RGB data testing result and the electric testing result of TTL;
The input of described rgb signal buffer control module connects the first output of described TTL transport module, output and control end are connected the input of described Data Detection fifo module and the control signal system end of RGB data detection module respectively, the input of original image buffer control module connects the output of described detection control module, output and control end are connected the input of described Data Detection fifo module and the control signal end of RGB data detection module respectively, the output of described Data Detection fifo module connects the input of described RGB data detection module, the output of described RGB data detection module connects the input of described signal detecting result output module, control end connects the control end of described detection control module, the output of described signal detecting result output module connects the signal receiving end of described detection control module.
Further, described RGB data detection module also comprises:
For alternately storing RGB frame data buffer storage first module and RGB frame data buffer storage second module of every frame RGB data of rgb video signal data buffer storage successively, for alternately storing initial data image buffer memory first module and initial data image buffer memory second module of every width raw image data of original image buffer control module buffer memory successively;
Described RGB frame data buffer storage first module and the data receiver of RGB frame data buffer storage second module are connected the data processing end of rgb signal buffer control module respectively;
Described initial data image buffer memory first module and the data receiver of initial data image buffer memory second module are connected the data processing end of original image buffer control module respectively.
Further, described detection control module comprises:
For receiving Ethernet, RS232, RS485 interface module of controling parameters;
For receiving USB, SD card interface module of raw image data;
For sending the upper-layer configured module of controling parameters and control signal, the electric testing result signal of reception and view data testing result signal,
The control end of described upper-layer configured module is as the control end of detection control module, the signal receiving end of described upper-layer configured module connects the output of described RGB data detection module, and described upper-layer configured module input connects the output of described Ethernet, RS232, RS485 interface module and USB, SD card interface module respectively.
The beneficial effects of the utility model are:
Single LINK, two LINK that the utility model can produce video source, the TTL vision signal of four LINK detect, the utility model, by arranging, well can be adapted to the different qualities such as color range, transmission means, coded system of different TTL transmission characteristics, vision signal.
The utility model can detect the electrical characteristic of the TTL vision signal that video source produces, and by input TTL electric parameter standard, in the utility model, obtains testing result and output display through comparison.
The utility model can detect the view data of the TTL vision signal that video source produces, by the every frame image data of buffer memory in advance and and raw video image contrast, thus judge whether each pixel exports correctly, and every two field picture all can detect.
The utility model can detect the highest TTL video resolution, not only integrated level is high, reliable operation, antijamming capability are strong, and it is simple to operate, economical and practical, detecting reliability and the efficiency of TTL liquid crystal module can not only be promoted, reduce its equipment cost and production cost, also will improve the universal of related display device further.
The utility model is by realizing described repertoire with FPGA (field programmable logic array) chip, DDR (DoubleDate Rate double data rate) storage chip, A/D (analog/digital) conversion chip; Above-mentioned device is all the common chips in market, they not only working stability, realize easily, and low price, avoid the problem such as design complexity, poor stability, design cost height caused because using various special chip.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the circuit block diagram of TTL transport module in Fig. 1.
Fig. 3 is the circuit block diagram of RGB data detection module in Fig. 1.
Fig. 4 is the circuit block diagram of detection control module in Fig. 1.
In figure: 1-TTL transport module, 11-TTL transmits matching module, 12-TTL signal shaping module; The electric sampling and Quantifying module of 13-TTL signal; The electric detection module of 14-TTL;
3-RGB data detection module, 31-RGB signal buffer control module, 32-RGB frame data buffer memory first module, 33-RGB frame data buffer memory second module, 34-original image buffer control module, 35-initial data image buffer memory first module, 36-initial data image buffer memory second module, 37-RGB data detection module, 38-signal detecting result output module, 39-Data Detection fifo module;
4-detection control module, 41-Ethernet, RS232, RS485 interface module, 42-USB, SD card interface module, 43-upper-layer configured module.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, is convenient to be well understood to the utility model, but they do not form restriction to the utility model.
As Figure 1-4, the device of detection TTL video signal quality of the present utility model comprises: TTL transport module 1, RGB data detection module 3 and detection control module 4.
TTL transport module 1, for receiving TTL vision signal to its operation that is terminated, sample to the electrical characteristic of the TTL vision signal after terminated operation, the electric parameter of acquisition TTL vision signal and TTL electric parameter benchmark carry out contrast and detect, and export electric testing result signal.
TTL transport module comprises 1:
TTL transmits matching module 11, for transmitting match parameter according to the TTL received, the TTL vision signal received is terminated operation, tested TTL vision signal is become with the more chaotic signal recuperation of making great efforts video source produces, then the TTL vision signal after terminated operation process is sent to the electric sampling and Quantifying module of TTL signal, described terminated operation comprises TTL signal impedance coupling, the configuration of TTL signal equalization, compensate the signal distortion because long range propagation causes, decay, guarantee TTL signal quality.
TTL signal shaping module 12, process is amplified for carrying out shaping to the TTL vision signal after the operation that is terminated, obtain best signal quality, avoid follow-up signal to change and detect occurring erroneous judgement, then RGB data detection module 3 is exported to, TTL vision signal after shaping is rgb video signal, directly can carry out view data detection to it.
The electric sampling and Quantifying module 13 of TTL signal, sample for electrical characteristics such as the voltage to TTL vision signal, electric currents, and by AD conversion chip, sampled signal (analog quantity) is quantized, namely convert the digital bit value of different size to.
The electric detection module 14 of TTL, for after receiving the electric detection control signal of TTL and TTL electric parameter benchmark that detection control module sends, the electrical value of the TTL signal of sampling and TTL electric parameter benchmark are contrasted, if TTL sample magnitude between the maxima and minima of TTL electric parameter benchmark, represents that TTL vision signal electrical quality is up to standard, otherwise is unsuccessfully.Then signal detecting result output module 38 is given by testing result (whether up to standardly namely tabulating which parameter), a road is given module 43 and is returned to PC display result via Ethernet, RS232, RS485 interface module 41 afterwards, and another road generation display feeding carries display screen 5 and shows.
TTL transmits the input of the electric sampling and Quantifying module 13 of output connection TTL signal of matching module 11, data receiver connects the data output end of detection control module 4, the output of TTL signal electric sampling and Quantifying module 13 connects the input of the electric detection module 14 of TTL, the output of the electric detection module 14 of TTL connects the second input of RGB data detection module 3 as the second output of TTL transport module 1, control end connects the control end of detection control module 4, the input of TTL signal shaping module 12 connects the output that TTL transmits matching module 11, output is as the first input end of the first output connection RGB data detection module 3 of TTL transport module 1.
RGB data detection module 3, for every frame RGB data of the view data detection control signal that sends according to upper-layer configured module successively buffer memory rgb video signal (TTL vision signal), control signal buffer memory raw image data is read according to original image, every frame RGB data is carried out contrast with raw image data successively detect, export electric testing result signal and view data testing result signal;
RGB data detection module 3 comprises:
Rgb signal buffer control module 31, for according to the every frame RGB data of operating control signal successively buffer memory, exports the good every frame RGB data of buffer memory simultaneously successively;
RGB frame data buffer storage first module 32 and RGB frame data buffer storage second module 33, for alternately storing every frame RGB data of rgb signal buffer control module 31 buffer memory successively;
Original image buffer control module 34, for reading the control signal every width raw image data of buffer memory successively according to original image, exports the good every width raw image data of buffer memory according to the operating control signal of RGB data detection module simultaneously successively;
Initial data image buffer memory first module 35 and initial data image buffer memory second module 36, for alternately storing every width raw image data of original image buffer control module 34 buffer memory successively.
Data Detection fifo module 39, carries out synchronizing relay operation for a line RGB data that will read and a line raw image data, makes its synchronism output;
RGB data detection module 37, for according to the view data detection control signal that receives to rgb signal buffer control module and original image buffer control module transmit operation control signal, according to original image resolution, every frame RGB data is carried out contrast with raw image data successively to detect, the object of detection comprises each pixel size and the location of pixels of RGB data simultaneously.
Signal detecting result output module 38, the electric testing result of TTL that RGB data testing result and the electric detection module of TTL for receiving the output of RGB data detection module export, and send detection consequential signal to detection control module.
The input of rgb signal buffer control module 31 connects the output of TTL signal shaping module 12, output and control end are connected the input of described Data Detection fifo module 39 and the control signal end of RGB data detection module 37 respectively, the input of original image buffer control module 34 connects the data output end of detection control module 4, output and control end are connected the input of described Data Detection fifo module 39 and the control signal end of RGB data detection module 37 respectively, the output of Data Detection fifo module 39 connects the input of RGB data detection module 37, the output of described RGB data detection module 37 connects the input of described signal detecting result output module 38, first control end connects the control end of detection control module 4, the output of signal detecting result output module 38 connects the signal receiving end of detection control module 4.RGB frame data buffer storage first module 32 is connected the data processing end of rgb signal buffer control module 31 respectively with the data receiver of RGB frame data buffer storage second module 33.Initial data image buffer memory first module 35 is connected the data processing end of original image buffer control module 34 respectively with the data receiver of initial data image buffer memory second module 36.
Detection control module 4, for sending electric detection control signal and TTL electric parameter benchmark to TTL transport module; For sending view data detection control signal, original image reading control signal, raw image data and original image resolution to RGB data detection module, and receive electric testing result signal and view data testing result signal.
Detection control module 4 comprises:
Ethernet, RS232, RS485 interface module 41, for receiving TTL electric parameter benchmark and TTL transmission match parameter, the utility model arranges TTL and transmits match parameter (termination impedance in PC upper layer software (applications), balanced), TTL electric parameter benchmark (maximum voltage, minimum voltage, overshoot, undershoot, electric current etc.), tested image level resolution, vertical resolution (being also the resolution of original image).After checkout gear starts, Ethernet, RS232, RS485 interface module 41 input above-mentioned Ethernet containing PC controling parameters, rs 232 serial interface signal recover its parameter and send into upper-layer configured module 43.
USB, SD card interface module 42, for electrically detect at TTL up to standard after, receive raw image data and send into upper-layer configured module 43;
Upper-layer configured module 43, transmits match parameter, electrically detection control signal and TTL electric parameter benchmark to TTL transport module for sending TTL when TTL electrically detects; After electric detection is up to standard, for sending view data detection control signal, original image reading control signal, raw image data and original image resolution to RGB data detection module.
The control end of upper-layer configured module 43 as the control end of detection control module 4, data output end as the data output end of detection control module 4, the signal receiving end of described upper-layer configured module 43 connects the output of described RGB data detection module 3, and upper-layer configured module 43 input connects the output of described Ethernet, RS232, RS485 interface module 41 and USB, SD card interface module 42 respectively.
Adopt the process of the TTL vision signal of the utility model detection source generation frequently as follows:
Step 1, detected video source reads original image and produces TTL vision signal and outputted to TTL transport module 1 of the present utility model.
Step 2, arranges controling parameters in PC, and PC controling parameters arranges with to be detected video source identical, sends into detection control module 4 by Ethernet or RS232, RS485 Serial Port Line.
Step 3, after the utility model device starts, Ethernet, RS232, RS485 interface module 41 receive above-mentioned Ethernet containing PC controling parameters, rs 232 serial interface signal recover its parameter and send into upper-layer configured module 43.PC controls upper-layer configured module 43 and is distributed to other each functional modules.After each functional module completes relative set and initialization, upper-layer configured module 43 produces TTL electric detection control signal to the electric detection module 14 of TTL, first detects the TTL signal electrical characteristic of detected video source.View data detection is carried out again when electric testing result is in the scope of TTL electric parameter benchmark.
Step 4, TTL transport module 1 pair of TTL vision signal inputs and detects.TTL transmits matching module 11 and carries out Signal reception impedance matching, reception equilibrium allocation, to make great efforts to revert to tested vision signal according to the TTL transmission match parameter that upper-layer configured module 43 exports.The electrical characteristic such as voltage, electric current of the electric sampling and Quantifying module of TTL signal 13 pairs of TTL vision signals is sampled, and institute's sampled signal (analog quantity) is quantized by AD conversion chip, namely converts the digital bit value of different size to.Each TTL sample magnitude and TTL electric parameter benchmark are compared by the electric detection module 14 of TTL, export the electric testing result of TTL.
Step 5, after upper-layer configured module 43 obtains the electric testing result of TTL, if up to standard, start view data detection control voluntarily to RGB data detection module 3, its view data receiving rgb video signal is detected automatically; Otherwise wait for PC do next step instruction, be namely again detect new TTL vision signal electrical characteristic or stop whole testing process.When TTL is electrically up to standard, then the TTL vision signal of TTL signal shaping module 12 to input carries out shaping amplification, to reach optimum signal quality, avoids follow-up signal to change and detects occurring erroneous judgement, export to RGB data detection module 3.
Step 6, after TTL is electrically up to standard, upper-layer configured module 43 automatically reads original image (original image and detected video source are same image) by USB, SD card interface module 42 and produces original image reading control signal and makes this image of its buffer memory to original image buffer control module 34.This original image is first cached in initial data image buffer memory first module 35 by original image buffer control module 34, initial data image buffer memory second module 36 is then cached to when detecting next width original image, these two modules are done ping-pong operation and adopt high speed DDR storage chip, thus can without the real-time detection different images data of pausing.
Step 7, the first buffer memory of the rgb image data of RGB data detection module 3 to the orthopedic TTL vision signal (rgb video signal) received detects again, and testing result is exported to display screen 5 and show and be sent on PC through module 43 and show.When RGB data detection module 37 receives view data detection control signal, then transmit operation control signal startup rgb signal buffer control module 31 receives rgb video signal.When rgb signal buffer control module 31 receives a new two field picture (namely finding that there is VSYNC from high level to low level saltus step), then this frame image data is cached to RGB frame data buffer storage first module 32, when this frame (i.e. present frame, hereinafter referred to as the n-th frame) after data are all cached to RGB frame data buffer storage first module 32, continue buffer memory (n+1)th frame immediately in RGB frame data buffer storage second module 33, notify that RGB data detection module 37 n-th frame data buffer memory completes and need detect it simultaneously; When in RGB data detection module 37 pairs of RGB frame data buffer storage first modules 32, the n-th frame data of buffer memory detect, the (n+1)th frame RGB data continues to be cached to RGB frame data buffer storage second module 33 by rgb signal buffer control module 31 simultaneously; After the (n+1)th frame RGB data buffer memory completes, RGB data detection module 37 has completed detection data cached in RGB frame data buffer storage first module 32, now continues to detect data cached in RGB frame data buffer storage second module 33 again.Namely rgb signal buffer control module 31 and RGB data detection module 37 replace respectively buffer memory, detect n-th, n+1 frame RGB data, namely the ping-pong operation between buffer memory/detection is carried out, without the every frame data of continuous detection paused, detection efficiency and reliability can be improve like this.RGB frame data buffer storage first module 32, RGB frame data buffer storage second module 33, initial data image buffer memory first module 35, initial data image buffer memory second module 36 all realize by DDR storage chip, thus realize large resolution big data quantity, high read-write operation, high reliability operation.
Step 8, when RGB data detection module 37 pairs of RGB data detect, first respectively by operation original image buffer control module 34, rgb signal buffer control module 31 reads the good current raw image data of institute's buffer memory and the n-th frame is detected RGB data.Due to cache module by phase same rate DDR storage chip is realized, but each DDR device is because of himself production technology and individual difference, causes its read-write operation speed not identical.Therefore for guaranteeing reliable Detection, need be stored in the corresponding FIFO (First InputFirst Output) of Data Detection fifo module 39 by the data read from cache module, Data Detection fifo module 39 has two FIFO to come respectively stored in raw image data and detected RGB data again.RGB data detection module 37 passes through operation original image buffer control module 34 according to configured horizontal resolution (i.e. a line view data number), rgb signal buffer control module 31 writes a line raw image data and the tested RGB data of a line in respective FIFO, the data then simultaneously read afterwards in these two FIFO compare, and (identical then expression is correct to record the pixel size result compared, otherwise represent mistake) and contrast location of pixels (which pixel of which row, X, Y-coordinate) and give signal detecting result output module 38 by its result and position.Due in FIFO again buffer memory once, reading data that can be simultaneously synchronous, therefore can adopt pipeline system operate when correction data, namely continuously reading is compared, and is constantly writing data into FIFO, and whole read-write comparison procedure is without pause.
Step 9, when last raw image data to be written in FIFO and after RGB data detection module 37 has compared by initial data image buffer memory first module 35, compare if rgb signal buffer control module 31 n-th frame is also last data accordingly, and middle comparison procedure does not have mistake, then think that this frame TTL image exports correct, then continue detection (n+1)th frame data.If when rgb signal buffer control module 31 in the end raw image data completeer after still have data to be detected, then think image resolution ratio mistake, and result is given signal detecting result output module 38 and pass to upper strata PC, and stop the comparison of successive image (detected image resolution ratio cannot be judged, more meaningless).If when the resolution of view data detects correct, then still continue detection (n+1)th frame at some pixel error of intermediate image.
Step 10, the interface data that RGB data testing result and the electric testing result of TTL carry out converting to applicable display screen 5 gives it to show by signal detecting result output module 38, convert to simultaneously the discernible protocol format of upper layer software (applications) after testing control module 4 give upper strata PC process.
Step 11, after current piece image has detected, before tested video source changes piece image output, upper strata PC first produces and switches image command to upper-layer configured module 43.Next width original image to be passed to original image buffer control module 34 by USB, SD card interface module 42 and to be cached in initial data image buffer memory second module 36 (initial data image buffer memory first module 35 buffer memory be current original image) by upper-layer configured module 43.Switch graphics control signals (being included in view data detection control signal) to RGB data detection module 37 when producing after completing buffer memory, tested video source starts the TTL vision signal sending lower piece image simultaneously.RGB data detection module 37 then still complete when receiving and switching graphics control signals present image be buffered in the comparison of current n frame in RGB frame data buffer storage first module 32, RGB frame data buffer storage second module 33 and n+1 frame RGB data, operate rgb signal buffer control module 31 afterwards RGB frame data buffer storage first module 32, RGB frame data buffer storage second module 33 to be reset, view data testing process is afterwards same as described above.Consider that the process that video source gives the TTL vision signal of an image has time delay, therefore Received signal strength again after also controlling the transmission time that the time delay of rgb signal buffer control module 31 is about field.
The content be not described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.
Claims (6)
1. detect a device for TTL video signal quality, it is characterized in that, comprising:
For sampling to the electrical characteristic of TTL vision signal, the electric parameter and the TTL electric parameter benchmark that obtain TTL vision signal carry out contrasting the TTL transport module (1) detected;
Detect for every frame RGB data is carried out contrast with raw image data successively, export the RGB data detection module (3) of electric testing result signal and view data testing result signal;
For sending the detection control module (4) of controling parameters and control signal, the electric testing result signal of reception and view data testing result signal;
The control end of described detection control module (4) connects the control end of described TTL transport module (1) and RGB data detection module (3) respectively, the first input end of the first output connection RGB data detection module (3) of described TTL transport module (1), the second output connect the second input of described RGB data detection module (3), and the output of described RGB data detection module (3) connects the signal receiving end of detection control module (4).
2. a kind of device detecting TTL video signal quality according to claim 1, is characterized in that: described TTL transport module (1) comprising:
TTL for the operation that is terminated to TTL vision signal transmits matching module (11);
The electric sampling and Quantifying module (13) of TTL signal for sampling to the electrical characteristic of TTL vision signal;
Carry out contrasting the electric detection module of the TTL detected (14) for the electrical value of the TTL vision signal by sampling and TTL electric parameter benchmark;
Described TTL transmits the data output end that output connects described TTL signal electric sampling and Quantifying module (13) input, data receiver connects described detection control module (4) of matching module (11), the output of described TTL signal electric sampling and Quantifying module (13) connects the input of the electric detection module of TTL (14), the control end that output connects the second input of described RGB data detection module (3), control end connects described detection control module (4) of the electric detection module of TTL (14).
3. a kind of device detecting TTL video signal quality according to claim 2, it is characterized in that: described TTL transport module (1) also comprises for carrying out to the TTL vision signal after the operation that is terminated the TTL signal shaping module (12) that process is amplified in shaping, its input connects the first input end that described TTL transmits the output of matching module (11), output connects described RGB data detection module (3) as the first output of TTL transport module (1).
4. a kind of device detecting TTL video signal quality according to claim 1, is characterized in that: described RGB data detection module (3) comprising:
For the every frame RGB data of buffer memory successively, export the rgb signal buffer control module (31) of the good every frame RGB data of buffer memory successively simultaneously;
For the every width raw image data of buffer memory successively, export the original image buffer control module (34) of the good every width raw image data of buffer memory successively simultaneously;
Carry out synchronizing relay operation for a line RGB data that will read and a line raw image data, make the Data Detection fifo module (39) of its synchronism output;
The RGB data detection module (37) detected is contrasted for every frame RGB data being carried out with raw image data successively;
For receiving the signal detecting result output module (38) of RGB data testing result and the electric testing result of TTL;
The input of described rgb signal buffer control module (31) connects the first output of described TTL transport module (1), output and control end are connected the input of described Data Detection fifo module (39) and the control signal system end of RGB data detection module (37) respectively, the input of original image buffer control module (34) connects the output of described detection control module (4), output and control end are connected the input of described Data Detection fifo module (39) and the control signal end of RGB data detection module (37) respectively, the output of described Data Detection fifo module (39) connects the input of described RGB data detection module (37), the output of described RGB data detection module (37) connects the input of described signal detecting result output module (38), control end connects the control end of described detection control module (4), the output of described signal detecting result output module (38) connects the signal receiving end of described detection control module (4).
5. a kind of device detecting TTL video signal quality according to claim 4, is characterized in that: described RGB data detection module (3) also comprises:
For alternately storing RGB frame data buffer storage first module (32) and RGB frame data buffer storage second module (33) of every frame RGB data of rgb video signal data buffer storage successively, for alternately storing initial data image buffer memory first module (35) and the initial data image buffer memory second module (36) of every width raw image data of original image buffer control module (34) buffer memory successively;
Described RGB frame data buffer storage first module (32) and the data receiver of RGB frame data buffer storage second module (33) are connected the data processing end of rgb signal buffer control module (31) respectively;
Described initial data image buffer memory first module (35) and the data receiver of initial data image buffer memory second module (36) are connected the data processing end of original image buffer control module (34) respectively.
6. a kind of device detecting TTL video signal quality according to claim 1, is characterized in that: described detection control module (4) comprising:
For receiving Ethernet, RS232, RS485 interface module (41) of controling parameters;
For receiving USB, SD card interface module (42) of raw image data;
For sending the upper-layer configured module (43) of controling parameters and control signal, the electric testing result signal of reception and view data testing result signal,
The control end of described upper-layer configured module (43) is as the control end of detection control module (4), the signal receiving end of described upper-layer configured module (43) connects the output of described RGB data detection module (3), and described upper-layer configured module (43) input connects the output of described Ethernet, RS232, RS485 interface module (41) and USB, SD card interface module (42) respectively.
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| CN104486616A (en) * | 2014-12-11 | 2015-04-01 | 武汉精测电子技术股份有限公司 | Device for quality detection of TTL (transistor-transistor logic) video signals |
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2014
- 2014-12-11 CN CN201420785151.8U patent/CN204231573U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486616A (en) * | 2014-12-11 | 2015-04-01 | 武汉精测电子技术股份有限公司 | Device for quality detection of TTL (transistor-transistor logic) video signals |
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