CN201629806U - Mobile television analog-digital converter - Google Patents
Mobile television analog-digital converter Download PDFInfo
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- CN201629806U CN201629806U CN201020156416XU CN201020156416U CN201629806U CN 201629806 U CN201629806 U CN 201629806U CN 201020156416X U CN201020156416X U CN 201020156416XU CN 201020156416 U CN201020156416 U CN 201020156416U CN 201629806 U CN201629806 U CN 201629806U
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- analog
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- reference voltage
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- 238000001514 detection method Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000012937 correction Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Abstract
The utility model discloses a mobile television analog-digital converter, which comprises a source driver, a reference voltage display generation circuit, a selection circuit, an analog-digital converter and a digital tester. One end of the source driver outputs a reference voltage to the analog-digital converter by the reference voltage display generation circuit, while the other end thereof generates an output voltage to the analog-digital converter by the selection circuit. The analog-digital converter is connected with the digital tester. The analog-digital converter of the utility model can realize accurate digital to analog conversion, simultaneously compares the voltages output by the analog-digital converter by the digital tester so as to realize detection of the source driver, avoids the problem of adopting external equipment to carry out detection, reduces detection cost and detection process and improves product quality.
Description
Technical field
The utility model relates to mobile TV, particularly be a kind of mobile TV analog-digital converter.
Background technology
At present along with increasingly mature, the quick raising of computer process ability and the popularizing gradually of mobile TV of video coding and decoding technology, the trend that is combined into a kind of development of video coding and decoding technology and mobile TV, this mobile TV then are subjected to liking of user deeply with advantages such as mobility are strong, be convenient for carrying.
Present mobile TV is in manufacturing process, need carry out chip testing to the source driving chip in the mobile TV, because it is quite accurate that the aanalogvoltage of source driving chip output needs, therefore need to use very expensive simulation test machine that it is tested, to guarantee the quality of mobile TV.
Summary of the invention
For addressing the above problem, the purpose of this utility model is to provide a kind of mobile TV analog-digital converter, to realize the accurate detection to source driving chip in the mobile TV production process.
For achieving the above object, the utility model is mainly by the following technical solutions:
A kind of mobile TV analog-digital converter, produce circuit comprising having source electrode driver, reference voltage to show, select circuit, analog-digital converter and digital tester, described source electrode driver one end shows that by reference voltage producing circuit exports a reference voltage to analog-digital converter; Then by selecting circuit to produce an output voltage to analog-digital converter, described analog-digital converter is connected with digital tester the other end.
Wherein said analog-digital converter includes correcting unit, error amplifier, counter and ramp generator, and described correcting unit is connected with error amplifier, and error amplifier is connected with ramp generator by counter.
The utility model analog-digital converter can be realized the exact figure analog-converted, the voltage ratio of analog-digital converter being exported by digital tester can realize the detection to source electrode driver simultaneously, avoided the problem that adopts external equipment to detect, reduce detection cost and testing process, improved the quality of product.
Description of drawings
Fig. 1 is the utility model systematic schematic diagram.
Identifier declaration among the figure: source electrode driver 101, reference voltage show generation circuit 102, select circuit 103, correcting unit 104, error amplifier 105, counter 106, ramp generator 107, digital tester 108.
Embodiment
For setting forth thought of the present utility model and purpose, the utility model is described further below in conjunction with the drawings and specific embodiments.
See also shown in Figure 1, a kind of mobile TV analog-digital converter, it is characterized in that including source electrode driver 101, reference voltage demonstration generation circuit 102, select circuit 103, analog-digital converter and digital tester 108, described source electrode driver 101 1 ends show that by reference voltage producing circuit 102 exports a reference voltage to analog-digital converter; Then by selecting circuit to produce an output voltage to analog-digital converter, described analog-digital converter is connected with digital tester 108 other end.Described analog-digital converter includes correcting unit 104, error amplifier 105, counter 106 and ramp generator 107, and described correcting unit 104 is connected with error amplifier 105, and error amplifier 105 is connected with ramp generator 107 by counter 106.
The anode of wherein said error amplifier 105 is used to receive the voltage of selecting circuit 103 to be exported, and the negative terminal of error amplifier 105 is used to receive the reference voltage that reference voltage shows 102 outputs of generation circuit, when the voltage differences of exporting between source electrode driver 101 each pad pin is very little, above-mentioned difference value can be carried out processing and amplifying by error amplifier 105.
More than a kind of mobile TV analog-digital converter provided by the utility model is described in detail, this terminal system is installed on the structure of any television set or display, can be combined into a complete operational multimedia receiving said audiovisual equipment, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (2)
1. mobile TV analog-digital converter, it is characterized in that including source electrode driver (101), reference voltage demonstration generation circuit (102), select circuit (103), analog-digital converter and digital tester (108), described source electrode driver (101) one ends show that by reference voltage producing circuit (102) exports a reference voltage to analog-digital converter; Then by selecting circuit to produce an output voltage to analog-digital converter, described analog-digital converter is connected with digital tester (108) other end.
2. mobile TV analog-digital converter according to claim 1, it is characterized in that described analog-digital converter includes correcting unit (104), error amplifier (105), counter (106) and ramp generator (107), described correcting unit (104) is connected with error amplifier (105), and error amplifier (105) is connected with ramp generator (107) by counter (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020156416XU CN201629806U (en) | 2010-04-06 | 2010-04-06 | Mobile television analog-digital converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020156416XU CN201629806U (en) | 2010-04-06 | 2010-04-06 | Mobile television analog-digital converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629806U true CN201629806U (en) | 2010-11-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020156416XU Expired - Fee Related CN201629806U (en) | 2010-04-06 | 2010-04-06 | Mobile television analog-digital converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201629806U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542116A (en) * | 2020-12-14 | 2021-03-23 | 四川长虹电器股份有限公司 | Method for rapidly positioning display fault of TCONLESS liquid crystal display television |
-
2010
- 2010-04-06 CN CN201020156416XU patent/CN201629806U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542116A (en) * | 2020-12-14 | 2021-03-23 | 四川长虹电器股份有限公司 | Method for rapidly positioning display fault of TCONLESS liquid crystal display television |
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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: 20101110 Termination date: 20130406 |