CN201571168U - Circuit board test circuit and television set - Google Patents

Circuit board test circuit and television set Download PDF

Info

Publication number
CN201571168U
CN201571168U CN2010200013070U CN201020001307U CN201571168U CN 201571168 U CN201571168 U CN 201571168U CN 2010200013070 U CN2010200013070 U CN 2010200013070U CN 201020001307 U CN201020001307 U CN 201020001307U CN 201571168 U CN201571168 U CN 201571168U
Authority
CN
China
Prior art keywords
signal
circuit board
television set
rgb
conversion module
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
Application number
CN2010200013070U
Other languages
Chinese (zh)
Inventor
孙有新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Hisense Electronics Co Ltd
Original Assignee
Qingdao Hisense Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Hisense Electronics Co Ltd filed Critical Qingdao Hisense Electronics Co Ltd
Priority to CN2010200013070U priority Critical patent/CN201571168U/en
Application granted granted Critical
Publication of CN201571168U publication Critical patent/CN201571168U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

The embodiment of the utility model discloses a circuit board test circuit and a television set, which belong to electronic technology field. The object of the utility model is to resolve technical problems of low test efficiency and high production cost in the existent technology. The circuit board test circuit includes a signal conversion module, a television set and a power supply, wherein the signal conversion module is connected with a LVDS interface of a circuit board to receive LVDS signals from the circuit board through the LVDS interface and translate the LVDS signals into a format played by the universal television set to input the television set to play. The television set includes the circuit board test circuit disclosed by the utility model. The utility model can be used for testing circuit boards.

Description

Circuit board testing circuit and television set
Technical field
The utility model belongs to electronic technology field, the television set that is specifically related to a kind of circuit board testing circuit and is provided with this circuit board testing circuit.
Background technology
Along with the continuous development of electronic technology, television set has become one of household electrical appliance the most common in people's daily life.
After various function elements assemble on the circuit board in the television set, need test, just can dispatch from the factory after the test passes circuit board.Method of testing with the mainboard of television set is an example, the main means of in the prior art TV SKD being tested have ICT test and movement functional test, the means of movement functional test mainly are that the mainboard that needs are tested is linked to each other with power supply, liquid crystal display screen (or plasma module), form a TV SKD test circuit, then each function of TV SKD is tested.
As shown in Figure 1, existing TV SKD test circuit, comprise liquid crystal display screen (or the plasma module) 6 and the power supply 4 that link to each other with LVDS (Low Voltage Differential Signal transmission) interface of TV SKD 1, wherein: liquid crystal display screen (or plasma module) 6 is used for receiving the LVDS signal that TV SKD 1 is sent from the LVDS interface, and plays out corresponding picture according to received LVDS signal.
The inventor finds that there is following problem at least in prior art in realizing process of the present utility model:
1, because the difference of LVDS interface definition, size, sequential and TCON (timer/counter control register) supply power voltage of the liquid crystal display screen as shown in Figure 1 (or plasma module) 6 that different manufacturers is produced, usually need change different liquid crystal display screen 6 and connect the screen line different types, frequent replacing liquid crystal display screen 6 has not only influenced testing efficiency, make testing efficiency lower, and wasted the liquid crystal display screen resource greatly, cause the television set production cost higher;
2, different liquid crystal display screens as shown in Figure 16 are because LVDS interface definition difference, different types need be equipped with different LVDS lines usually, the management and the debugging of operation teams and groups before too much LVDS line is unfavorable for, not only influenced testing efficiency, make testing efficiency lower, and the liquid crystal display screen 6 that damages because of wrong LVDS line easily, cause the television set production cost higher.
The utility model content
The utility model embodiment provides a kind of circuit board testing circuit and a kind of television set, has solved prior art and has existed the lower and production cost of testing efficiency to compare technical problems of high.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
This circuit board testing circuit comprises signal conversion module, television set and power supply, wherein:
Described signal conversion module links to each other with the LVDS interface of circuit board, be used for receiving the LVDS signal that described circuit board sends from described LVDS interface, and described LVDS signal is converted into the described television set of input behind the form that general television set can play, play by described television set.
Further, the form that can play of described general television set is DVI signal or HDMI signal.
Further, described signal conversion module comprises RGB conversion module, rgb signal composite module and TV signal conversion module, wherein:
Described RGB conversion module is used for the LVDS signal is converted into rgb signal and described rgb signal is imported described rgb signal composite module;
Described rgb signal composite module is used to receive described rgb signal, and described rgb signal combination, arrangement are odd field rgb signal and even field rgb signal, and the rgb signal after will making up then, putting in order is imported described TV signal conversion module;
Described TV signal conversion module is used to receive the rgb signal after described rgb signal composite module combination, the arrangement and described rgb signal is converted into the described television set of input behind DVI signal or the HDMI signal.
Further, the form of described LVDS signal is VESA and JEIDA one or both combination wherein.
Further, described RGB conversion module is the DS90CF388 chip.
Further, described TV signal conversion module is the Si11160 chip.
Further, described rgb signal composite module comprises signal combination unit, parameter configuration unit and parameter display unit, wherein:
Described signal combination unit is used to receive described rgb signal, and described rgb signal combination, arrangement are odd field rgb signal and even field rgb signal, and the rgb signal after will making up then, putting in order is imported described TV signal conversion module;
Described parameter configuration unit is used for disposing the image parameter of described signal combination unit combination, arrangement rgb signal afterwards;
Described parameter display unit is used for showing the image parameter of described signal combination unit combination, arrangement rgb signal afterwards.
Further, described signal combination unit is a field programmable gate array.
Further, described signal combination unit is a Lattice XP2 chip.
Further, described circuit board is the mainboard of television set.
This television set comprises the described circuit board testing circuit of above-mentioned the utility model embodiment.
Compared with prior art, the utility model provides the arbitrary technical scheme in the technique scheme to have following advantage:
Signal conversion module in the circuit board testing circuit that the utility model embodiment is provided can receive the LVDS signal, and import television set after the LVDS signal is converted into the form that general television set can play, play by television set, as seen, need only in the utility model and use general television set, just can replace liquid crystal display screen used in the prior art by general television set, so need not to use liquid crystal display screen, and then also avoided the LVDS interface definition of the liquid crystal display screen (or plasma module) that different manufacturers produces, size, the difference of sequential and TCON supply power voltage, need changing different liquid crystal display screens usually and connect the problem of shielding line different types of causing takes place, the signal of the form that the general television set that signal conversion module is exported in while the utility model can be play, must only need to use general data line just can transmit, so also avoided liquid crystal display screens different in the prior art because LVDS interface definition difference, the problem that needs to be equipped with different LVDS lines takes place, so circuit board testing circuit provided by the utility model not only testing efficiency than higher, and relatively save cost, solve prior art and existed the lower and production cost of testing efficiency to compare technical problems of high.
Description of drawings
Fig. 1 is the schematic diagram of circuit board testing circuit inner structure in the prior art;
Fig. 2 is the schematic diagram of the internal structure of the circuit board testing circuit that embodiment of the present utility model provided;
Fig. 3 is the schematic diagram of a kind of embodiment of the circuit board testing circuit that embodiment of the present utility model provided;
Fig. 4 is the schematic diagram of another embodiment of the circuit board testing circuit that embodiment of the present utility model provided;
Fig. 5 is the schematic diagram of the enforcement circuit of signal conversion module in the circuit board testing circuit that embodiment of the present utility model shown in Figure 4 provided;
Fig. 6 is the schematic diagram of the concrete enforcement chip of RGB conversion module in the circuit board testing circuit that embodiment of the present utility model shown in Figure 5 provided.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described in detail.
The utility model embodiment provides a kind of testing efficiency than higher, and more cost-effective circuit board testing circuit and the television set that is provided with this circuit board testing circuit.
As shown in Figure 2, the circuit board testing circuit that the utility model embodiment is provided, comprise signal conversion module 2, television set 3 and power supply 4, wherein: signal conversion module 2 links to each other with the LVDS interface of circuit board 5, be used for the LVDS signal that sends from LVDS interface circuit board for receiving 5, and the LVDS signal is converted into input television set 3 behind the form that general television set can play, play by television set 3.
Signal conversion module 2 in the circuit board testing circuit that the utility model embodiment is provided can receive the LVDS signal, and the LVDS signal is converted into input television set 3 behind the form that general television set can play, play by television set 3, as seen, need only in the utility model and use general television set 3, just can replace liquid crystal display screen used in the prior art by general television set, so need not to use liquid crystal display screen, and then also avoided the LVDS interface definition of the liquid crystal display screen (or plasma module) that different manufacturers produces, size, the difference of sequential and TCON supply power voltage, need changing different liquid crystal display screens usually and connect the problem of shielding line different types of causing takes place, the signal of the form that the general television set that signal conversion module 2 is exported in while the utility model can be play, must only need to use general data line just can transmit, so also avoided liquid crystal display screens different in the prior art because LVDS interface definition difference, the problem that needs to be equipped with different LVDS lines takes place, so circuit board testing circuit provided by the utility model not only testing efficiency than higher, and relatively save cost, solve prior art and existed the lower and production cost of testing efficiency to compare technical problems of high.
The power supply 4 of present embodiment circuit board testing circuit is and the power supply of television set 3 power panel independent of each other, certainly, the circuit board testing circuit also can with television set 3 shared same power supplys.
The form that general television set can be play is DVI signal or HDMI signal.Adopt DVI signal or HDMI signal to help to improve the versatility that the utility model embodiment provides the circuit board testing circuit.
As shown in Figure 3 and Figure 4, signal conversion module 2 comprises RGB conversion module 21, rgb signal composite module 22 and TV signal conversion module 23, wherein:
RGB conversion module 21 is used for the LVDS signal is converted into rgb signal and rgb signal is imported rgb signal composite module 22;
Rgb signal composite module 22 is used to receive rgb signal, and rgb signal combination, arrangement is odd field rgb signal and even field rgb signal, the rgb signal input TV signal conversion module 23 after will making up then, putting in order;
TV signal conversion module 23 is used to receive the rgb signal after 22 combinations of rgb signal composite module, the arrangement and rgb signal is converted into input television set 3 behind DVI signal or the HDMI signal.
Rgb signal composite module 22 and TV signal conversion module 23 both can be that two different chips also can interior two the different functional modules of same chip in the present embodiment.
TV signal conversion module 23 can adopt the Sil1160 chip in the present embodiment.The Sil1160 chip is supported 24bit single channel or 48bit binary channels, and bandwidth reaches 25～165MHz.The Sil1160 chip can be converted to the DVI signal with the rgb signal after rgb signal composite module 22 combination, the arrangement, directly imports television set 3 then and plays by television set 3.Certainly, TV signal conversion module 23 also can be for being converted to the rgb signal after 22 combinations of rgb signal composite module, the arrangement other chips of HDMI signal.
The form of LVDS signal is wherein one or both of VESA (Video Electronics Standards Association, VESA) and JEIDA (Japan Electronic Industry Development Association).More than two kinds of forms be more common data transmission format at present, use above two kinds of general formats to help enlarging the range of choice of RGB conversion module 21.
As shown in Figure 4 and Figure 5, RGB conversion module 21 is a DS90CF388 chip as shown in Figure 6.The highest support of the clock frequency 112MHz of DS90CF388 chip, can support high clock spread spectrum to the 100kHz modulating frequency, and support VGA, SVGA, XGA, SXGA (double image element), SXGA+ (double image element) and UXGA (double image element), in addition, the DS90CF388 chip can also be avoided the LVDS signal because the generation of the caused clock jitter problem of spread spectrum.Certainly, RGB conversion module 21 also can adopt the electronic device of other similar DS90CF388 chips in the present embodiment.
RGB conversion module 21 is two independences DS90CF388 chips as shown in Figure 5 in the present embodiment, and one of them DS90CF388 chip is supported single channel VESA signal, and another supports binary channels JEIDA signal.Certainly, in actual use more a plurality of DS90CF388 chips can also be set as required.
As shown in Figure 4 and Figure 5, rgb signal composite module 22 comprises signal combination unit 221, parameter configuration unit 222 and parameter display unit 223 as shown in Figure 4, wherein: signal combination unit 221 is used to receive rgb signal, and rgb signal combination, arrangement be odd field rgb signal and even field rgb signal, will make up, put in order rgb signal input TV signal conversion module 23 afterwards then; Parameter configuration unit 222 is used for the image parameter of the rgb signal after 221 combinations of configuration signal assembled unit, the arrangement; Parameter display unit 223 is used for the image parameter of the rgb signal after 221 combinations of shows signal assembled unit, the arrangement.
Parameter configuration unit 222 can be set to several buttons in the present embodiment, and operating personnel can regulate image parameter by the mode of pressing button.Parameter display unit 223 can adopt small-sized liquid crystal display screen, so that the tester observes in the rgb signal composite module 22 image parameter in the rgb signals and the situation of change of image parameter.
Signal combination unit 221 be field programmable gate array (Field-Programmable Gate Array, FPGA).Field programmable gate array not only have the design cycle short, development cost are low, low in energy consumption and characteristics that risk is little, and can significantly improve level of integrated system, reliability.Certainly, signal combination unit 221 also can adopt other electronic devices of similar programmable gate array in the present embodiment.
Signal combination unit 221 is a Lattice XP2 chip.Lattice XP2 chip has high-performance, low cost, advantage that fail safe is good, and Lattice XP2 chip also supports to adopt the field upgrade (LiveUpdates) of TransFR, 128 AES to encrypt and the dual boot technology.Certainly, signal combination unit 221 also can adopt other field programmable gate arrays of similar Lattice XP2 chip or the electronic device of similar field programmable gate array in the present embodiment.
Circuit board 5 is the mainboard of television set.The mainboard of television set is the important devices in the television set, and mainboard is provided with multiple power consumption device, and the suitable circuit board testing circuit that adopts the utility model embodiment to be provided is tested.Certainly, the circuit board testing circuit that provided of the utility model embodiment can also be applied to test the circuit board of similar TV SKD in other circuit boards in the television set and other household electrical appliance.
The television set that the utility model embodiment is provided comprises the circuit board testing circuit that above-mentioned the utility model embodiment is provided.
Because the identical technical characterictic of circuit board testing circuit that is provided with above-mentioned the utility model embodiment is provided the utility model embodiment, so also can produce identical technique effect, solves identical technical problem.
The above; it only is embodiment of the present utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.

Claims (10)

1. circuit board testing circuit is characterized in that: comprise signal conversion module, television set and power supply, wherein:
Described signal conversion module links to each other with the LVDS interface of circuit board, be used for receiving the LVDS signal that described circuit board sends from described LVDS interface, and described LVDS signal is converted into the described television set of input behind the form that general television set can play, play by described television set.
2. circuit board testing circuit according to claim 1 is characterized in that: the form that described general television set can be play is DVI signal or HDMI signal.
3. circuit board testing circuit according to claim 1 is characterized in that: described signal conversion module comprises RGB conversion module, rgb signal composite module and TV signal conversion module, wherein:
Described RGB conversion module is used for the LVDS signal is converted into rgb signal and described rgb signal is imported described rgb signal composite module;
Described rgb signal composite module is used to receive described rgb signal, and described rgb signal combination, arrangement are odd field rgb signal and even field rgb signal, and the rgb signal after will making up then, putting in order is imported described TV signal conversion module;
Described TV signal conversion module is used to receive the rgb signal after described rgb signal composite module combination, the arrangement and described rgb signal is converted into the described television set of input behind DVI signal or the HDMI signal.
4. circuit board testing circuit according to claim 3 is characterized in that: described RGB conversion module is the DS90CF388 chip.
5. circuit board testing circuit according to claim 3 is characterized in that: described TV signal conversion module is the Si11160 chip.
6. circuit board testing circuit according to claim 3 is characterized in that: described rgb signal composite module comprises signal combination unit, parameter configuration unit and parameter display unit, wherein:
Described signal combination unit is used to receive described rgb signal, and described rgb signal combination, arrangement are odd field rgb signal and even field rgb signal, and the rgb signal after will making up then, putting in order is imported described TV signal conversion module;
Described parameter configuration unit is used for disposing the image parameter of described signal combination unit combination, arrangement rgb signal afterwards;
Described parameter display unit is used for showing the image parameter of described signal combination unit combination, arrangement rgb signal afterwards.
7. circuit board testing circuit according to claim 6 is characterized in that: described signal combination unit is a field programmable gate array.
8. circuit board testing circuit according to claim 7 is characterized in that: described signal combination unit is a Lattice XP2 chip.
9. circuit board testing circuit according to claim 1 is characterized in that: described circuit board is the mainboard of television set.
10. a television set is characterized in that: comprise the arbitrary described circuit board testing circuit of claim 1 to 9.
CN2010200013070U 2010-01-04 2010-01-04 Circuit board test circuit and television set Expired - Fee Related CN201571168U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010200013070U CN201571168U (en) 2010-01-04 2010-01-04 Circuit board test circuit and television set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010200013070U CN201571168U (en) 2010-01-04 2010-01-04 Circuit board test circuit and television set

Publications (1)

Publication Number Publication Date
CN201571168U true CN201571168U (en) 2010-09-01

Family

ID=42663469

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010200013070U Expired - Fee Related CN201571168U (en) 2010-01-04 2010-01-04 Circuit board test circuit and television set

Country Status (1)

Country Link
CN (1) CN201571168U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105450968A (en) * 2014-08-29 2016-03-30 深圳Tcl新技术有限公司 Modular television and television signal processing method thereof
CN103581600B (en) * 2013-09-25 2017-01-04 武汉精立电子技术有限公司 LVDS video signal is converted to 8LANE odd even split screen MIPI video signal method
WO2017113704A1 (en) * 2015-12-31 2017-07-06 乐视控股（北京）有限公司 Television core board testing apparatus
CN107592524A (en) * 2017-08-24 2018-01-16 康佳集团股份有限公司 Intelligent television automation test method, system and storage device based on matrix
CN111459005A (en) * 2020-04-22 2020-07-28 北京航空航天大学 Space division multiplexing color holographic reproduction system and implementation method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103581600B (en) * 2013-09-25 2017-01-04 武汉精立电子技术有限公司 LVDS video signal is converted to 8LANE odd even split screen MIPI video signal method
CN105450968A (en) * 2014-08-29 2016-03-30 深圳Tcl新技术有限公司 Modular television and television signal processing method thereof
CN105450968B (en) * 2014-08-29 2019-06-21 深圳Tcl新技术有限公司 Module TV and its TV signal processing method
WO2017113704A1 (en) * 2015-12-31 2017-07-06 乐视控股（北京）有限公司 Television core board testing apparatus
CN107592524A (en) * 2017-08-24 2018-01-16 康佳集团股份有限公司 Intelligent television automation test method, system and storage device based on matrix
CN111459005A (en) * 2020-04-22 2020-07-28 北京航空航天大学 Space division multiplexing color holographic reproduction system and implementation method
CN111459005B (en) * 2020-04-22 2021-08-27 北京航空航天大学 Space division multiplexing color holographic reproduction system and implementation method

Similar Documents

Publication Publication Date Title
CN201571168U (en) Circuit board test circuit and television set
CN201577167U (en) Circuit board selectively-cutting testing circuit and a television testing circuit
CN105304000B (en) Liquid crystal display die set aging testing system
CN104536707A (en) Display apparatus for displaying video input through various ports
CN202363090U (en) Multi-screen display device
CN105047146A (en) Display device
CN107241562A (en) Ultra high-definition LCD TV circuit system and interface
CN103065595B (en) Drive method and drive circuit of liquid crystal display panel and liquid crystal display device
US9179142B2 (en) Image processing apparatus and inspecting method thereof
CN105093589B (en) Liquid crystal display die set aging testing system
CN201035944Y (en) Interface circuit compatible with multi-format display screen
CN105516753A (en) Liquid crystal display television apparatus and liquid crystal display television system
CN203416348U (en) Display device and display system
CN102097049B (en) Signal self-adaption device and method for liquid crystal module testing
KR20110138007A (en) Multi display
CN203870352U (en) Display module testing and displaying system
CN105427773B (en) Liquid crystal display die set aging testing system
CN202058409U (en) Automatic video signal and picture signal switching LCM test device
CN105516626B (en) Content providing, liquid crystal display device and display system
CN202261584U (en) Flat-panel television display screen compatible device
CN204090054U (en) The standardized module TV of a kind of interface structure
CN106953616A (en) A kind of digital signal generator
CN103391405A (en) Signal switching device and electronic device with signal switching device
CN101312030B (en) Video signal source generating device carried out by programmable logic gate array
CN202004765U (en) Parameter injector

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100901

Termination date: 20130104