CN201114436Y - TV image automatic control device - Google Patents
TV image automatic control device Download PDFInfo
- Publication number
- CN201114436Y CN201114436Y CNU200720200597XU CN200720200597U CN201114436Y CN 201114436 Y CN201114436 Y CN 201114436Y CN U200720200597X U CNU200720200597X U CN U200720200597XU CN 200720200597 U CN200720200597 U CN 200720200597U CN 201114436 Y CN201114436 Y CN 201114436Y
- Authority
- CN
- China
- Prior art keywords
- microprocessor
- image
- radio frequency
- circuit
- image control
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to an image control technique, in particular to the technology of controlling the quality of image according to the strength of radio frequency signals in a TV. Aiming at the disadvantages of inaccurate radio frequency detection, a few adjustable parameters and poor adjusting effect in a current image control system, the utility model discloses a TV image control device adopting digital technology. The technical proposal adopted by the TV image control device is that the TV image control device consists of a radio frequency detection circuit, a microprocessor and an image adjusting circuit, the radio frequency detection circuit is connected with the microprocessor and the microprocessor is connected with the image adjusting circuit; the TV image control device is characterized in that the radio frequency detection circuit consists of an A/D converter and a memory which are connected with the microprocessor. By adopting digital detection and control technology, the beneficial effects of, the TV image control device are accurate radio frequency detection and image control, a plurality of adjustable parameters and obvious image improvement effect.
Description
Technical field
The utility model relates to the image control technology, particularly in the television set, according to the technology of radio-frequency (RF) signal strength control picture quality.
Background technology
Continuous expansion along with the broadcast and television information net, the people who more and more comes is enjoying TV to own convenience and the enjoyment of bringing at aspects such as life, amusements, along with the raising of people's living standard and increasing of market brand of television, competition has spurred the demand of people to high-caliber video effect simultaneously.The television set of received RF (RF) TV signal, comprise by the space television signal of antenna reception and the TV signal of closed-circuit system transmission, the RF signal all will be through processes such as ovennodulation, transmission, acceptance, conversion of signals, in these processes, can be subjected to from environment, equipment, etc. the influence of aspect, tangible change can take place in the power of RF signal, thereby influences the TV program watching quality.The image modification system of existing television set mainly is by detecting the RF signal strength signal intensity, control the RF Amplifier Gain, reaching the purpose of regulating picture quality.The RF input inaccuracy of prior art, the image parameter of its control is very limited, weak effect.Along with the digital development of television set, particularly current popular panel TV set (as PDP, LCD etc.) has adopted digital processing technology, and traditional image control system can not satisfy the requirement of technical development.
The utility model content
Technical problem to be solved in the utility model is exactly at the conventional images control system, and radio frequency detects inaccuracy, and the adjusting parameter is few, and the shortcoming of regulating effect difference provides a kind of TV images control device that adopts digital technology.
The utility model solve the technical problem, and the technical scheme of employing is the TV images automatic control equipment, comprise the radio frequency testing circuit, microprocessor and image adjustment circuit, described radio frequency testing circuit is connected with microprocessor, and described microprocessor is connected with the image adjustment circuit; It is characterized in that described radio frequency testing circuit is made of A/D converter and memory; Described A/D converter and memory are connected with microprocessor;
Further, described image adjustment circuit is made of register, and described register is connected with microprocessor.
The beneficial effects of the utility model are, adopt digitlization detection, control technology, and radio frequency detects accurately, image control accurately, it is many to regulate parameter, the image enhancement effect is obvious.
Description of drawings
Fig. 1 is the circuit block diagram of embodiment.
Embodiment
Describe the technical solution of the utility model in detail below in conjunction with drawings and Examples.
TV images automatic control equipment of the present utility model, make full use of the achievement of digital television techniques, adopt digital technology that radiofrequency signal is detected, by microprocessor testing result is compared, the register that stores image parameter is adjusted by microprocessor according to comparative result, reached the purpose of adjusting image display effect.
Embodiment
The TV images automatic control equipment that this is routine, circuit structure as shown in Figure 1.Comprise the radio frequency testing circuit that constitutes by A/D converter and memory, the image adjustment circuit that constitutes by register, and microprocessor.Image adjustment circuit among the figure comprises the comb filter regulating circuit, is made of register 1; The color saturation regulating circuit is made of register 2; Color edge regulating circuit is made of register 3; Brightness edge regulating circuit is made of register 4.
When the RF signal changed, the index of reaction picture quality as the noise spot on the color saturation of image and color definition, edge definition, the image, light tone stalling characteristic etc., all may change.In digital television, above-mentioned image parameter is digitized as concrete value, be stored in the relevant register, and corresponding with the intensity of RF signal, by adjusting the value of corresponding registers, just can reach the effect of automatic adjustment picture quality.
Be example with colored edge regulating circuit below, operation principle of the present utility model is described.
After the RF signal is handled through prime, input a/d converter converts the data that reflect RF signal power to, and microprocessor compares the value in RF data and the memory, according to each image parameter data of current RF data correspondence, adjust the value of its corresponding register respectively.
Following table is the memory data (just listing out the occurrence of color edge data in the table) of the television set of certain model:
| The RF data | Color edge data | Brightness edge data | The colour saturation degrees of data | The comb filter data |
| 0×02 | 0×42 | ---- | ---- | ---- |
| 0×04 | 0×43 | ---- | ---- | ---- |
| 0×07 | 0×53 | ---- | ---- | ---- |
| 0×0a | 0×63 | ---- | ---- | ---- |
| 0×0d | 0×73 | ---- | ---- | ---- |
| 0×10 | 0×83 | ---- | ---- | ---- |
| 0×13 | 0×84 | ---- | ---- | ---- |
| 0×17 | 0×94 | ---- | ---- | ---- |
| 0×1b | 0×95 | ---- | ---- | ---- |
| 0×20 | 0×a5 | ---- | ---- | ---- |
| 0×ff | 0×b5 | ---- | ---- | ---- |
The a certain moment is detected RF data value and the comparison of last table the first train value, if value less than first row, then continue down to search and compare, up to the value that finds more than or equal to first row, stop to search, microprocessor stores should value, and searches corresponding color edge data with delegation according to this value, as the value of regulating register 3, thereby regulate the image color edge parameters.For example detecting the RF data is 0 * 18, then searches as can be known in last table, and 0 * 1b is just greater than 0 * 18, meet the requirements, its corresponding color edge data are 0 * 95, and microprocessor is adjusted into 0 * 95 with the value of register 3, thereby finishes the adjustment of color edge parameter.The adjustment of other image parameters similarly.
In order to prevent that the fast-changing situation of RF data from causing the picture sudden change, adopted step by step transitional technology steadily in this device, promptly microprocessor is regulated the value of each register with step-by-step system.For example when the RF data that detect when 0 * 02 changes to 0 * 20, microprocessor can't be immediately directly be adjusted into 0 * a5 with the value of register 3 from 0 * 42, but the one-level one-level is provided with step by step, the big appointment of whole process continued about 5 seconds, in the time of so just can preventing that the RF signal from changing fast, the acute variation of image parameter.Simultaneously also can be after the RF signal short time change significantly and recover normally, image parameter can remain unchanged substantially.
Claims (3)
1. the TV images automatic control equipment comprises the radio frequency testing circuit, microprocessor and image adjustment circuit, and described radio frequency testing circuit is connected with microprocessor, and described microprocessor is connected with the image adjustment circuit; It is characterized in that described radio frequency testing circuit is made of A/D converter and memory; Described A/D converter and memory are connected with microprocessor.
2. TV images automatic control equipment according to claim 1 is characterized in that, described image adjustment circuit is made of register, and described register is connected with microprocessor.
3. TV images automatic control equipment according to claim 1 and 2 is characterized in that, described image adjustment circuit comprises comb filter regulating circuit, color saturation regulating circuit, color edge regulating circuit, brightness edge regulating circuit; Described comb filter regulating circuit, color saturation regulating circuit, color edge regulating circuit, brightness edge regulating circuit all are connected with microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720200597XU CN201114436Y (en) | 2007-07-03 | 2007-07-03 | TV image automatic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720200597XU CN201114436Y (en) | 2007-07-03 | 2007-07-03 | TV image automatic control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201114436Y true CN201114436Y (en) | 2008-09-10 |
Family
ID=39966184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720200597XU Expired - Lifetime CN201114436Y (en) | 2007-07-03 | 2007-07-03 | TV image automatic control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201114436Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578106A (en) * | 2016-01-28 | 2016-05-11 | 四川长虹电器股份有限公司 | Method for automatically adjusting noises and definitions of RF signals |
-
2007
- 2007-07-03 CN CNU200720200597XU patent/CN201114436Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578106A (en) * | 2016-01-28 | 2016-05-11 | 四川长虹电器股份有限公司 | Method for automatically adjusting noises and definitions of RF signals |
| CN105578106B (en) * | 2016-01-28 | 2018-05-01 | 四川长虹电器股份有限公司 | The method for automatically adjusting RF signal noises and clarity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106488157A (en) | Image display | |
| US8717341B2 (en) | Display apparatus which adjusts the responsivity of the display brightness to ambient lighting based on the time of day | |
| US20090213272A1 (en) | Video processing apparatus and method for processing video signal | |
| US20090219267A1 (en) | Video display apparatus and video display method | |
| US20090268960A1 (en) | Image display device and image display method | |
| US20100039566A1 (en) | Display system and method for switching display mode | |
| US20040100584A1 (en) | Video output device | |
| CN102402970B (en) | Method and device for adjusting contrast of display screen | |
| CN101394482A (en) | CMOS image sensor and automatic exposure control method | |
| KR102070322B1 (en) | Display apparatus and display panel driving method thereof | |
| US8319896B2 (en) | Image processing apparatus and method for controlling image processing apparatus | |
| CN104581132A (en) | Detection system and detection method | |
| CN201114436Y (en) | TV image automatic control device | |
| US20130135508A1 (en) | Personal image data acquisition apparatus and personal image data acquisition method | |
| CN103686423B (en) | For the collocation method and device of the visible image quality parameter of user | |
| CN113271422A (en) | Brightness adjusting method and device, television and computer readable storage medium | |
| US8456579B2 (en) | Dynamic RF AGC switch/mixer for optimal NTSC video detection | |
| EP2894846B1 (en) | Imaging device, imaging method, image processing device, and carrier means | |
| US20060234653A1 (en) | Antenna setting apparatus | |
| US7509665B2 (en) | Digital television broadcast signal receiver | |
| US8508665B2 (en) | Image processing apparatus and control method thereof | |
| EP1983502A2 (en) | Backlight control apparatus and backlight control method | |
| JP2011059389A (en) | Video display device | |
| US20080258972A1 (en) | Antenna System | |
| US20080218220A1 (en) | Signal converting apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080910 |