CN1949888B - System and method for producing high resolution television test signal - Google Patents
System and method for producing high resolution television test signal Download PDFInfo
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- CN1949888B CN1949888B CN2006100210306A CN200610021030A CN1949888B CN 1949888 B CN1949888 B CN 1949888B CN 2006100210306 A CN2006100210306 A CN 2006100210306A CN 200610021030 A CN200610021030 A CN 200610021030A CN 1949888 B CN1949888 B CN 1949888B
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Abstract
The invention discloses a system and method for producing high definition TV test signals, comprising external keyboard to select output signal formats, interfaces and graphics, signal processor to calculate pixel data and synchronous data according to the output signals, high speed memory to store the calculated pixel data and synchronous data, and display controller to circularly read the data from the high speed memory to high definition TV interface circuti, where the external keybord is conencted with the signal processor, the signal processor is connected with the high speed memory, the high speed memory is conencted with the display controller, and the display controller is conencted with the high definition TV interface circuit. And it can combine formats, interfaces and graphicsat will, and finally output signals of multiple formats, interfaces and graphics.
Description
Technical field
The present invention relates to the television display technology field, more specifically say the system and method that relates to the high-definition TV signal test.
Background technology
Present normal tv signal test all is to test by single figure, interface format.But high-definition signal has 3 kinds of attributes, the i.e. attribute of a configuration, graphic attribute and interface attributes.Form has 720P-50HZ, 1080P-60HZ, 1080I-50HZ etc.; Graphic attribute refers to be presented at the image content on the HDTV, and for example circle, grid etc. are used to test the pattern of television set; Interface attributes has the output of YPBPR component, RGB output, the output of DVI interface etc.; because high definition TV in use often has the cooperation of different forms, figure, interface; therefore just need be to the combined test of different forms, figure, interface, therefore original method of testing just can not be suitable for the test of high-definition TV signal.
Summary of the invention
One of technical problem to be solved by this invention provides a kind of system that can produce the high resolution television test signal of multiple form, multiple interfaces, multiple figure.
System of the present invention comprises the external connection keyboard of the form of selecting output signal, interface, figure, calculate the signal processor MCU of pixel data, synchrodata according to the external connection keyboard output signal, the data that the high-speed memory storage is read in the display pixel data that the storage signal processor MCU calculates, the RAM high-speed memory of synchronization signal data, circulation are given the display controller of high definition television interface circuit; The external connection keyboard signal connects signal processor MCU, and signal processor MCU signal connects the RAM high-speed memory, and RAM high-speed memory signal connects display controller, and the display controller signal connects the high definition television interface circuit; Also be provided with between described external connection keyboard and the signal processor and can pass through the working state circuit whether " busy condition line " confirmation signal processor does, the external connection keyboard signal connects working state circuit, and the working state circuit signal connects signal processor.If computing is intact for data during the converted output signal of busy expression user's last time, if idle then send the attribute information of needs output signal to signal processor MCU according to the operation of button is corresponding, just signal processor would be received the intact data output signal of back computing; Described system also comprises the memory of the form that is used to preserve each number, figure, combination of interfaces information, be used to store and call the control MCU of the combined information of memory, certain number that is comprised is made up corresponding front panel keys with certain group form, figure, interface attributes, described working state circuit is located on the control MCU, control MCU signal connected storage, the front panel keys signal connects control MCU.Different forms, figure, combination of interfaces information can be kept at accordingly on the different platform number, like this as long as select platform number just can access the signal of needs easily.
Described working state circuit is connected with the LCDs signal.The instruction that working state circuit can be received external connection keyboard and front panel keys so directly is presented on the LCDs.The state that whether hurries of signal processor MCU can be presented on the LCDs.
Described working state circuit with one can shows signal processor MCU operating state the pronunciation suggestion device be connected.Can whether demonstrate signal processor MCU for busy state by the pronunciation suggestion device like this.
Two of technical problem to be solved by this invention provides a kind of method that can produce the high resolution television test signal of multiple form, multiple interfaces, multiple figure.
Method of the present invention may further comprise the steps:
A, form, interface, graphic attribute combined information are transported to signal processor MCU;
B, signal processor MCU go out pixel data, synchrodata according to the signal operation that transports, and these storage are arrived high-speed memory;
C, display controller circulation sense data are given interface circuit.Also comprise in the described steps A and also comprise a step of judging the operating state that signal processor is whether busy in the described steps A of step of judging signal processor MCU operating state, if computing is intact for data during the converted output signal of busy expression user's last time, if idle then according to the corresponding attribute information that sends the needs output signal to signal processor MCU of the operation of button.Can allow the operator know whether signal processor MCU is in busy operating state like this.Combined information in the described steps A comes from external connection keyboard.Can be by external connection keyboard to form, figure, interface attributes combination in any; Combined information in the described steps A comes from the front panel keys of selecting platform number.Compound mode commonly used can be kept on the different platform number, it is more convenient to operate like this.
Comprise also in the described steps A that the combined information with input is shown to the step of LCDs.Can allow the operator clearly see corresponding combined information like this.
The present invention be owing to can select form, figure, combination of interfaces information by external connection keyboard, but so form, interface, figure combination in any, finally export the signal of multiple form, multiple interfaces, multiple figure.And the user can be can being stored in the various combinations of needs in each number, directly selects the platform of front panel keys correspondence number can more conveniently access respective combination information when needing.
Description of drawings
Fig. 1 is the theory diagram of system in the embodiment of the invention.
Fig. 2 is the pixel data displayed map of the RAM in the embodiment of the invention.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment
System among the embodiment comprises the form of selecting output signal, interface, the external connection keyboard of figure, external connection keyboard comprises button display and external connection keyboard MCU, by the whether busy control MCU of " busy condition line " confirmation signal processor MCU, be used to preserve the form of each number, figure, the I2C memory of combination of interfaces information, certain number that is comprised and certain group form, figure, interface attributes makes up corresponding front panel keys, according to carrying signal operation to go out pixel data, the signal processor MCU of synchrodata, the display pixel data that the storage signal processor MCU calculates, the RAM high-speed memory of synchronization signal data, circulation are read the display controller of the data of high-speed memory storage to the high definition television interface circuit; External connection keyboard, front panel keys signal connect control MCU, control MCU signal connects the I2C memory, control MCU signal connects signal processor MCU, signal processor MCU signal connects the RAM high-speed memory, RAM high-speed memory signal connects display controller, and the display controller signal connects the high definition television interface circuit.
Below in conjunction with several chief components of native system the production method of high resolution television test signal is carried out comparatively detailed explanation.
External connection keyboard: external connection keyboard MCU if there is button to press, mails to control board MCU to the correspondence instruction with serial mode to the scanning of push-button array procession.Each key of external connection keyboard is used to select form, interface, the figure of output signal.
Control board: control board MCU receives the instruction of external connection keyboard and front panel keys and (selects the form of output signal, interface, figure), and in time be presented on the LCD display, the I2C memory is preserved the form of each number, figure, combination of interfaces information, when selecting the signal of output by button, whether control board is busy by " busy condition line " confirmation signal plate earlier, if computing is not intact for data during the converted output signal of busy expression user's last time, if idle then give birth to information according to the corresponding genus that sends the needs output signal to signal plate MCU of the operation of button, just signal plate would be received the intact data output signal of back computing.
Signal plate: after signal plate MCU received the output signal attribute information that control board MCU sends, order was finished following four steps work.The first step: signal processor MCU calculates the needed mass data of a frame signal according to the attribute of signal, deposit in the display-memory on computing limit, limit, these data comprise display pixel data, synchronization signal data (if DVI output also comprises the correlation timing signal), and storage mode is by address bus, control bus, data/address bus (see figure 1); Second step; Form according to signal sends the data that clock frequency is set by null modem cable 2 to frequency synthesizer; The 3rd step: carry the signal of this form to take the last address (the different last addresses of form are also different) of RAM to display controller by null modem cable 1; The 4th step: MCU stops using bus, and START control signal level uprises, and means and gives display controller to the control of display random access memory.Next display controller with set clock frequency from the address 0 to the last address that is provided with sense data from RAM successively, running through last address location, and then to begin to read the address again be 0 unit, data whenever run through the signal (interlacing scan comprises parity field) of just exporting a frame for one time, output pixel data so again and again, synchronization signal data (if DVI output also comprises the correlation timing signal), these data are defeated by each interface circuit to produce the signal that needs, YPBPR interface circuit then, the rgb interface circuit, PAL/NTSC encoder inside all contains digital to analog converter.For ease of understanding, Fig. 2 represents that simply output image is a black and white grid signal output interface when being rgb signal, the pixel data of a certain primary colours in the display random access memory.The display controller in turn 0000H memory cell from memory is given interface circuit to 019FH unit read data, read the 019FH unit and and then read 0000H again, the pixel data of graticule picture is read in going round and beginning again circulation, and the later memory cell data of 019FH is invalid.The zone up and down of the form of Fig. 2 is 0, and these zones are the blanking zone.The data-bus width of memory is 32, if the interface attributes of signal is a rgb interface, the RGB primary colours respectively account for 8, and remaining 8 are row field sync signal and the interface related clock signal of DVI.
The described method of embodiment can produce the high-definition signal of various forms, and the ordinary sharpness signal can produce the figure of any needs from YPBPR, RGB, DVI, CVBS, the output of SVIDEO interface.
Claims (5)
1. system that produces high resolution television test signal, the external connection keyboard that comprises the form of selecting output signal, interface, figure, calculate the signal processor of pixel data, synchrodata according to the external connection keyboard output signal, the data that the high-speed memory storage is read in the display pixel data that the storage signal processor calculating goes out, the high-speed memory of synchronization signal data, circulation are given the display controller of high definition television interface circuit; The external connection keyboard signal connects signal processor, and the signal processor signal connects high-speed memory, and the high-speed memory signal connects display controller, and the display controller signal connects the high definition television interface circuit; Also be provided with between described external connection keyboard and the signal processor and can pass through the working state circuit whether " busy condition line " confirmation signal processor does, the external connection keyboard signal connects working state circuit, and the working state circuit signal connects signal processor; Described system also comprises the memory of the form that is used to preserve each number, figure, combination of interfaces information, be used to store and call the control MCU of the combined information of memory, comprise certain number and make up corresponding front panel keys with certain group form, figure, interface attributes, described working state circuit is located on the control MCU, control MCU signal connected storage, the front panel keys signal connects control MCU.
2. system according to claim 1 is characterized in that: described working state circuit is connected with the LCDs signal.
3. system according to claim 1 is characterized in that: described working state circuit with one can the shows signal processor working state the pronunciation suggestion device be connected.
4. method that produces high resolution television test signal may further comprise the steps:
A, form, interface, graphic attribute combined information are transported to signal processor;
B, signal processor go out pixel data, synchrodata according to the signal operation that transports, and these storage are arrived high-speed memory;
C, display controller circulation sense data are given interface circuit; Also comprise a step of judging the operating state whether signal processor does in the described steps A, if computing is intact for data during the converted output signal of busy expression user's last time, if idle then according to the corresponding attribute information that sends the needs output signal to signal processor MCU of the operation of button; Combined information in the described steps A comes from external connection keyboard or comes from the front panel keys of selecting platform number.
5. method according to claim 4 is characterized in that: comprise also in the described steps A that the combined information with input is shown to the step of LCDs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100210306A CN1949888B (en) | 2006-05-22 | 2006-05-22 | System and method for producing high resolution television test signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100210306A CN1949888B (en) | 2006-05-22 | 2006-05-22 | System and method for producing high resolution television test signal |
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| Publication Number | Publication Date |
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| CN1949888A CN1949888A (en) | 2007-04-18 |
| CN1949888B true CN1949888B (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100210306A Expired - Fee Related CN1949888B (en) | 2006-05-22 | 2006-05-22 | System and method for producing high resolution television test signal |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101511038B (en) * | 2008-12-22 | 2010-08-11 | 天津大学 | Test method for wide colour range SDTV digital TV system |
| CN101547377B (en) * | 2009-05-05 | 2011-07-06 | 北京牡丹视源电子有限责任公司 | Signal source and control method thereof |
| CN102169665A (en) * | 2011-03-17 | 2011-08-31 | 华容电子（昆山）有限公司 | Mainboard testing controller of liquid crystal display (LCD) and liquid crystal display television (LCDTV) |
| CN104125453A (en) * | 2013-04-26 | 2014-10-29 | 赤松城(北京)科技有限公司 | Multifunctional test signal generator/distributor for large-scale production of video products |
| CN114764235B (en) * | 2021-01-12 | 2023-11-07 | 成都鼎桥通信技术有限公司 | Serializer/deserializer SERDES interface test system and method |
| CN114911731B (en) * | 2022-03-16 | 2023-11-17 | 平湖市智周深鉴智能科技有限公司 | Modeling interface design method of complex system, electronic equipment and storage medium |
-
2006
- 2006-05-22 CN CN2006100210306A patent/CN1949888B/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 倪继烈.微型计算机原理与接口技术 1.清华大学出版社,2005,177-183. |
| 倪继烈.微型计算机原理与接口技术 1.清华大学出版社,2005,177-183. * |
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| CN1949888A (en) | 2007-04-18 |
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