CN101329459B - LCD device and apparatus for processing signals - Google Patents
LCD device and apparatus for processing signals Download PDFInfo
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Abstract
The invention discloses a liquid crystal display device, comprising a backlight source driver, a liquid crystal display screen and a signal processing device which is integrated by the following units: a first interface unit for converting an obtained digital RGB signal to a YUV signal; a first extraction unit for extracting a brightness data signal from the YUV signal; a brightness normalization coefficient calculation unit for calculating the brightness normalization coefficient according to the brightness data signal; a drive signal generation unit for generating a drive signal corresponding to the normalization coefficient; a second interface unit for converting the YUV signal to a signal which is in line with the preset format and carrying out the output; a third interface unit for outputting the drive signal to the corresponding backlight source driver; and a central processor for controlling other units according to a preset working procedure. The invention discloses a signal processing device simultaneously. An integrated structure of the signal processing device in the invention can reduce the hardware devices.
Description
Technical field
The present invention relates to electronic technology field, more particularly relate to a kind of liquid crystal indicator and signal processing apparatus that is applied in the LCD.
Background technology
Along with the continuous progress of electronic technology, the evolution and have portable characteristic gradually of heavy electronic product.Being reflected on the display device is that liquid crystal indicator (LCD) replaces traditional cathode ray tube (CRT) display device, becomes the main flow on the market.
The liquid crystal of liquid crystal indicator (as LCD TV) itself is not luminous, it belongs to the backlight display device, there is backlight behind at liquid crystal display, and LCD TV is to show or go back original picture by the light that evenly distributed tiny liquid crystal particle on the screen sends by " blocking-up " and " opening " backlight.In the starting stage, as long as the LCD energized, backlight is just in work, even picture displayed is the black full picture of a width of cloth, backlight is also in work.That is to say that the backlight of LCD TV is forever luminous.Because the transmittance of liquid crystal is extremely low, make the brightness of LCD TV reach the degree that is enough to perfect display frame, the brightness of backlight will be very high, so not only can shorten the serviceable life of the backlight of liquid crystal indicator, and make beholder's eyes become tired easily; And if reduce the brightness of backlight, then can reduce the contrast and the color saturation of shown image.
The appearance of regulation technology backlight and development address this problem to a certain extent, utilize regulation technology backlight dynamically to adjust backlight according to image content, concrete method is that backlight dynamic point brightening circuit system (generally adopting programmable logic device (PLD) and a plurality of hardware device) is set, according to image content backlight illumination is controlled, regulated to backlight, guarantee the contrast and the color saturation of image on the one hand, prolong the serviceable life of backlight on the other hand.
But, above a plurality of hardware devices of described Technology Need, also need extra control circuit to come backlight dynamic point brightening circuit module is controlled, make that liquid crystal indicator and signal processing apparatus are bulky, complex structure.
Summary of the invention
The invention provides a kind of liquid crystal indicator and signal processing apparatus, the backlight illumination of liquid crystal indicator is adjusted, solve available liquid crystal display device and bulky, the baroque problem of signal processing apparatus.
A kind of liquid crystal indicator of the present invention is achieved in that
This device comprises backlight driver and LCDs, also comprises signal processing apparatus, and this signal processing apparatus is integrated by following unit integral:
First interface unit becomes YUV signal with the digital rgb conversion of signals of obtaining;
First extraction unit extracts the brightness data signal in described YUV signal;
Brightness normalization coefficient computing unit is according to described brightness data calculated signals brightness normalization coefficient;
Driving signal generating unit generates and the corresponding drive signal of this brightness normalization coefficient;
Second interface unit converts YUV signal to meet the LCDs interface specification signal, and exports LCDs to;
The 3rd interface unit, output drive signal is given the backlight driver corresponding with the backlight subregion;
Central processing unit is controlled other unit except that described central processing unit in first interface unit, first extraction unit, brightness normalization coefficient computing unit, driving signal generating unit, second interface unit and the 3rd interface unit that comprise at least in the signal processing apparatus according to the working routine that sets in advance.
Preferably, described signal processing unit also comprises the dynamic partition unit, is used to described central processing unit that the subregion indication information is provided.
Preferably, described signal processing apparatus also comprises:
First storage unit is used for storing one or more of drive signal that brightness normalization coefficient that the YUV signal after described first interface unit conversion, the brightness data signal that described first extraction unit extracts, described brightness normalization coefficient computing unit calculate and described driving signal generating unit generate.
Preferably, described signal processing apparatus also comprises:
The brightness correction unit is used to utilize the brightness normalization coefficient of described first cell stores that the YUV signal of described first cell stores is carried out brightness correction;
Described second interface unit also is used for being sent to LCDs with described through the YUV signal after the brightness correction.
Preferably, described signal processing unit also comprises:
Second extraction unit is used for from the YUV signal extraction chroma data signal of the process brightness correction of described first cell stores;
Second storage unit is used to store described chroma data signal;
Optimize the unit, be used to utilize the chroma data signal of described second cell stores, the YUV signal through brightness correction is carried out the colourity optimization process by a configurable two-dimentional reference table.
Preferably, described working routine that sets in advance and subregion indication information are kept in the 3rd storage unit.
The present invention also discloses a kind of signal processing apparatus, this signal processing apparatus is integrated by following unit integral:
First interface unit becomes YUV signal with the digital rgb conversion of signals of obtaining;
First extraction unit extracts the brightness data signal in described YUV signal;
Brightness normalization coefficient computing unit is according to described brightness data calculated signals brightness normalization coefficient;
Driving signal generating unit generates and the corresponding drive signal of this brightness normalization coefficient;
Second interface unit converts YUV signal to meet LCDs interface specification form signal, and exports LCDs to;
The 3rd interface unit exports drive signal to backlight driver;
Central processing unit is used for according to the working routine that sets in advance other unit except that central processing unit that comprise first interface unit, first extraction unit, brightness normalization coefficient computing unit, driving signal generating unit and second interface unit and the 3rd interface unit at least of this signal processing apparatus being controlled.
Preferably, described signal processing apparatus also comprises the dynamic partition unit, be used to described central processing unit that the subregion indication information is provided, calculate the brightness normalization coefficient of specifying the backlight subregion according to described subregion indication information so that described central processing unit is controlled described brightness normalization system-computed unit.
Preferably, described signal processing apparatus also comprises:
First storage unit is used for storing one or more of drive signal that YUV signal after described first interface unit conversion, brightness normalization coefficient that described brightness normalization coefficient computing unit calculates and described driving signal generating unit generate.
Preferably, described signal processing apparatus also comprises:
The brightness correction unit is used to utilize brightness normalization coefficient described in first storage unit that the YUV signal of described first cell stores is carried out brightness correction;
Described second interface unit also is used for being sent to LCDs with described through the YUV signal after the brightness correction.
Preferably, described signal processing apparatus also comprises:
Second extraction unit is used for from the YUV signal extraction chroma data signal of the process brightness correction of described first cell stores;
Second storage unit is used to store described chroma data signal;
Optimize the unit, be used to utilize the chroma data signal of described second cell stores, the YUV signal through brightness correction is carried out the colourity optimization process by a configurable two-dimentional reference table.
Preferably, described working routine that sets in advance and described subregion indication information are kept in the 3rd storage unit.
By technique scheme as can be known, the present invention does not need extra control circuit to control, signal processing apparatus wherein is with the SOC of integrated each functional unit (system on chip), central processing unit is wherein controlled other each unit according to the working routine that sets in advance and is carried out work, and this structure has the following advantages and characteristics compared to existing technology:
1, because each functional unit all is integrated on the chip, reduces hardware device, reduced circuit scale, saved and take up room, helped the miniaturization of product;
2, do not need circuit trace between each functional unit of signal processing apparatus, the delay problem of having avoided circuit trace to bring, the convenient image of realizing shows that lighting the synchronous of sequential with backlight cooperates.
Description of drawings
Fig. 1 is the structural representation of the embodiment one of liquid crystal indicator of the present invention;
Fig. 2 is the structural representation of the embodiment two of liquid crystal indicator of the present invention;
Fig. 3 is the structural representation of the embodiment three of liquid crystal indicator of the present invention;
Fig. 4 is the structural representation of the embodiment four of liquid crystal indicator of the present invention;
Fig. 5 is the structural representation of colourity processing unit of the embodiment four of liquid crystal indicator of the present invention;
Fig. 6 is the structural representation of the embodiment five of liquid crystal indicator of the present invention;
Fig. 7 is the structural representation of the embodiment one of signal processing apparatus of the present invention;
Fig. 8 is the structural representation of the embodiment two of signal processing apparatus of the present invention;
Fig. 9 is the structural representation of the embodiment three of signal processing apparatus of the present invention;
Figure 10 is the structural representation of the embodiment four of signal processing apparatus of the present invention;
Figure 11 is the structural representation of the colourity processing unit of the embodiment four of signal processing apparatus of the present invention;
Figure 12 is the structural representation of the embodiment five of signal processing apparatus of the present invention.
Embodiment
Basic thought of the present invention is: the signal processing apparatus of integrated a plurality of functional units is carried out a series of processing to rgb signal, draw the brightness normalization coefficient of signal, and utilize this brightness normalization coefficient to generate drive signal, backlight driver is controlled, adjusted the electric current of corresponding backlight.
Herein, rgb signal is exactly a colour-video signal, and a kind of colour coding method that YUV (also claiming YCrCb) is adopted by the eurovision system." Y " expression lightness (Luminance or Luma), just GTG value among the YUV; That " U " and " V " represents then is colourity (Chrominance or Chroma), and effect is to describe colors of image and saturation degree, is used to specify color of pixel.
Understand for those skilled in the art can have preferably technical solution of the present invention, technical solution of the present invention is described in detail below in conjunction with drawings and Examples.
Please refer to Fig. 1, be the structural representation of the embodiment one of a kind of liquid crystal indicator of the present invention.
The backlight of liquid crystal indicator is made up of a plurality of LED (light emitting diode), generally speaking, if liquid crystal indicator is divided into M * N zone, so Dui Ying backlight is divided into M * N corresponding zone, when M=N=1, described zone is exactly whole liquid crystal display area.
This liquid crystal indicator comprises: backlight driver 100, signal processing apparatus 200 and LCDs 300, described backlight driver 100 comprises a plurality of partition drivers, each partition drivers is corresponding one by one with described backlight subregion, is used for the electric current to the LED of this subregion; Described signal processing apparatus 200 comprises: first interface unit 201, first extraction unit 202, brightness normalization coefficient computing unit 203, driving signal generating unit 204, second interface unit 205, the 3rd interface unit 206 and central processing unit 207.
Described signal processing apparatus 200 is an integral structure, that is to say that described first interface unit 201, first extraction unit 202, brightness normalization coefficient computing unit 203, driving signal generating unit 204, second interface unit 205, the 3rd interface unit 206 and central processing unit 207 are integrated on the chip piece.
The course of work of this device is as follows:
Described first interface unit 201 obtains the digital rgb signal that the outside sends over, and (this digital rgb signal can be the digital signal that sends over from digital circuit, also can be to send from mimic channel, and the digital signal that obtains through analog to digital conversion), described first interface unit 201 is after receiving described digital rgb signal, under the control of described central processing unit 206, described digital rgb conversion of signals is become YUV signal.
After described first interface unit 201 obtained and the digital rgb conversion of signals become YUV signal, under the control of central processing unit 207, described first extraction unit 202 extracted brightness data signal (Y data-signal) from described YUV signal.
Described central controller 207 sends a control signal to described brightness normalization coefficient computing unit 203, and this brightness normalization coefficient computing unit 203 is according to the publish picture brightness normalization coefficient of picture of described brightness data calculated signals.
Described driving signal generating unit 204 generates and the corresponding drive signal of this brightness normalization coefficient, this drive signal is PWM (the pulse width modulation) signal (also being pulse width modulated signals) of certain dutycycle, described PWM drive signal is drive current just, because brightness is by the decision of the luminous flux of RGB-LED (RGB light emitting diode), and LED luminous flux and electric current are linear, are to be determined by drive current so also we can say brightness.
Described the 3rd interface unit 206, under the control of central controller 207, the drive signal that described driving signal generating unit 204 is generated sends to.
Described backlight driver 100 receives after the described drive signal, adjusts the electric current of corresponding LED according to described drive signal.
Under the control of central processing unit 207, YUV signal in described first interface unit 201 is sent to second interface unit 206, described second interface unit 206 converts described YUV signal to meet the LCDs interface specification signal, and is sent to described LCDs.
Need to prove that the signal that described drive signal is sent to backlight driver 100 and meets the LCDs interface specification is sent to LCDs and finishes synchronously.
As can be seen, the present invention calculates the brightness normalization coefficient of each frame image, generates drive signal according to this brightness normalization coefficient, and this drive signal is sent to backlight driver, by this backlight driver the electric current of the LED of correspondence is adjusted.
Compared with prior art, the embodiment of the invention does not need extra control circuit to come backlight dynamic point brightening circuit module is controlled, signal processing apparatus wherein is with the SOC of integrated each functional unit (system on chip), central processing unit 207 is wherein controlled other each unit according to the working routine that sets in advance and is carried out work, the structure of this integration-in-one can reduce hardware device on the one hand, reduce circuit scale, save cost, on the other hand, this integral type makes that signal time delay is able to conveniently be controlled, be easy to realize that image shows that lighting the synchronous of sequential with backlight cooperates, and, owing to reduce hardware device, thereby reduced because the complicacy of system has also reduced the probability that breaks down.
Fig. 2 is the structural representation of the embodiment two of backlight regulation apparatus of the present invention.
When practical application, can as required image be divided into some subregions, and only a certain subregion of image be carried out the calculating of brightness normalization coefficient, number of partitions can be adjusted as required.
On the basis of the foregoing description, this backlight regulation apparatus can also comprise zoning unit 2071, be used to described central processing unit 207 that the subregion indication information is provided, after described central processing unit 207 obtains the subregion indication information from described zoning unit 2071, control described brightness normalization coefficient computing unit 203 calculates specified partition according to described indication information brightness normalization coefficient.
Fig. 3 shows the 3rd embodiment of backlight regulation apparatus of the present invention.
Under the situation of adjusting backlight, in order to keep or improve user's subjective contrast, guarantee that the image that LCDs shows can not reduce because of the reduction of backlight illumination, on the basis of the foregoing description, the embodiment of the invention can also comprise first storage unit 208 and brightness correction unit 209, described first storage unit 208 is stored the brightness normalization coefficient and the drive signal of described YUV signal, brightness data signal, each subregion under the control of central processing unit 207; Described brightness correction unit 209 utilizes the brightness normalization coefficient of each subregion that described YUV signal is revised.
Under the control of described central controller 207, YUV signal storage after first storage unit 208 is changed first interface unit 201, described first extraction unit 202 obtains the YUV signal of described first storage unit 208 storages, and the brightness data signal (Y-signal) of inciting somebody to action wherein separates, the described brightness data signal of first storage unit, 208 storages, brightness normalization coefficient computing unit 203 utilizes the brightness data calculated signals of described first storage unit 208 storages to go out the brightness normalization coefficient of each picture portion, the described brightness normalization coefficient of first storage unit, 208 storages, described brightness correction unit 209 utilizes this brightness normalization coefficient that YUV signal is carried out brightness correction, and 208 storages of first storage unit are through the YUV signal after the brightness correction; Described driving signal generating unit 204 generates the corresponding drive signal of brightness normalization coefficient of each picture portion of storing with described first storage unit 208, the described drive signal of described first storage unit, 208 storages.Described second interface unit 205 is sent to LCDs 300 with the YUV signal after the process brightness correction in first storage unit 208, shows.Described the 3rd interface unit 206 is sent to backlight driver 100 with the drive signal in first storage unit 208.
Described brightness normalization coefficient is generally speaking less than 1, the drive signal that described driving signal generating unit 204 generates is a drive current, the current value of this drive current equals the product of initial current and this brightness normalization coefficient, described initial current refers to the maximum current of LED work, and described brightness correction unit 209 with the brightness of described YUV signal divided by described brightness normalization coefficient.For example, when a certain subregion need reduce backlight illumination, multiply each other for the drive signal of backlight and the brightness normalization coefficient of this subregion, simultaneously, with this YUV signal in the brightness of the data of described subregion divided by described brightness normalization coefficient.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the structural representation of the 4th embodiment of liquid crystal indicator of the present invention, and Fig. 5 is the structural representation of the colourity processing unit of the 4th embodiment of liquid crystal indicator of the present invention.
In order to strengthen color saturation, on the basis of the foregoing description, the present invention can also comprise by second extraction unit 211, second storage unit 212 and optimize the colourity processing unit 210 that unit 213 is formed.
Under the control of central controller 207, described second extraction unit 211 is isolated chroma data signal (UV signal) from the YUV signal of first storage unit, 201 storages, and with described chroma data signal storage in described second storage unit 212, described optimization unit 213 is under the control of central controller 207, utilize the chroma data signal in described second storage unit 212, with reference to a configurable two-dimentional reference table, described YUV signal is carried out the colourity optimization process.
The experience ginseng values that obtain by a large amount of subjective evaluation and tests during parameter values in the described configurable two-dimentional reference table.
Need to prove, more than among all embodiment, the subregion indication information that the described working routine that sets in advance, configurable two-dimentional reference table and described zoning unit 2071 provide all can be arranged in the 3rd storage unit 214, as shown in Figure 6, structural representation for fifth embodiment of the invention, described CPU (central processing unit) 207 reads the working routine in described the 3rd storage unit 214 in real time, and the work of other functional units in the signal processing apparatus 200 is controlled according to this working routine, control them and when start, when stop.For the ease of revising or upgrading, described the 3rd storage unit 214 can be EEPROM (electrically erasable programmable read-only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)), the staff can be according to user's request modification program, simple and fast, easy to maintenance.
Fig. 7 is embodiment one structural representation of signal processing apparatus of the present invention.
The present invention discloses a kind of signal processing apparatus, comprising: first interface unit 201, first extraction unit 202, brightness normalization coefficient computing unit 203, driving signal generating unit 204, second interface unit 205, the 3rd interface unit 206 and central processing unit 207.
Described signal processing apparatus 200 is an integral structure, that is to say that described first interface unit 201, first extraction unit 202, brightness normalization coefficient computing unit 203, driving signal generating unit 204, second interface unit 205, the 3rd interface unit 206 and central processing unit 207 are integrated on the chip piece.
The course of work of this device is as follows:
Described first interface unit 201 obtains the digital rgb signal that the outside sends over, and (this digital rgb signal can be the digital signal that sends over from digital circuit, also can be to send from mimic channel, and the digital signal that obtains through analog to digital conversion), described first interface unit 201 is after receiving described digital rgb signal, under the control of described central processing unit 207, described digital rgb conversion of signals is become YUV signal.
After described first interface unit 201 obtained and the digital rgb conversion of signals become YUV signal, under the control of central processing unit 207, described first extraction unit 202 extracted brightness data signal (Y data-signal) from described YUV signal.
Described central controller 207 sends a control signal to described brightness normalization coefficient computing unit 203, and this brightness normalization coefficient computing unit 203 goes out the brightness normalization coefficient of each picture portion according to described brightness data calculated signals.The tool computation process of the brightness normalization coefficient of each picture portion partly has a detailed description at above-mentioned liquid crystal indicator, does not repeat them here.
Described driving signal generating unit 204 generates and the corresponding drive signal of this brightness normalization coefficient, this drive signal is PWM (the pulse width modulation) signal (also being pulse width modulated signals) of certain dutycycle, described PWM drive signal is drive current just, because brightness is by the decision of the luminous flux of RGB-LED (RGB light emitting diode), and LED luminous flux and electric current are linear, are to be determined by drive current so also we can say brightness.Described the 3rd interface unit 206 is carried described drive signal.Described second interface unit 206 converts described YUV signal the signal of default specification to, and carries.
Fig. 8 is the structural representation of the embodiment two of backlight regulation apparatus of the present invention.
On the basis of the foregoing description, this backlight regulation apparatus can also comprise zoning unit 2071, be used to described central processing unit 207 that the subregion indication information is provided, after described central processing unit 207 obtains the subregion indication information from described zoning unit 2071, control described brightness normalization coefficient computing unit 203 calculates specified partition according to described indication information brightness normalization coefficient.
Fig. 9 is the structural representation of the embodiment three of signal processing apparatus of the present invention.
On the basis of the foregoing description, the embodiment of the invention can also comprise first storage unit 208 and brightness correction unit 209, described first storage unit 208 is stored the brightness normalization coefficient and the drive signal of described YUV signal, brightness data signal, each subregion under the control of central processing unit 207; Described brightness correction unit 209 utilizes the brightness normalization coefficient of each subregion that described YUV signal is revised.
Calculate process and the method that described YUV signal revises and partly have a detailed description, do not repeat them here at above-mentioned liquid crystal indicator.
Please refer to Figure 10 and Figure 11, Figure 10 is the structural representation of the embodiment four of signal processing apparatus of the present invention, and Figure 11 is the structural representation of the colourity processing unit of the embodiment four of signal processing apparatus of the present invention.
On the basis of the foregoing description, the present invention can also comprise by second extraction unit 211, second storage unit 212 and optimize the colourity processing unit 210 that unit 213 is formed.
Under the control of central controller 207, described second extraction unit 211 is isolated chroma data signal (UV signal) from the YUV signal of first storage unit, 201 storages, and with described chroma data signal storage in described second storage unit 212, described optimization unit 213 is under the control of central controller 207, utilize the chroma data signal in described second storage unit 212, with reference to a configurable two-dimentional reference table, described YUV signal is carried out the colourity optimization process.
Need to prove the experience ginseng values that obtain by a large amount of subjective evaluation and tests during parameter values in the described configurable two-dimentional reference table.Concrete colourity optimization process partly has a detailed description at above-mentioned liquid crystal indicator, repeats no more equally at this.
The subregion indication information that the described working routine that sets in advance, configurable two-dimentional reference table and described zoning unit 2071 provide all can be arranged in the 3rd storage unit 214, as shown in figure 12, structural representation for the embodiment of the invention five, described CPU (central processing unit) 207 reads the working routine in described the 3rd storage unit 214 in real time, and the work of other functional units in the signal processing apparatus 200 is controlled according to this working routine, control them and when start, when stop.For the ease of revising or upgrading, described the 3rd storage unit 214 can be EEPROM (electrically erasable programmableread-only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)), the staff can be according to user's request modification program, simple and fast, easy to maintenance.
The embodiment of the invention is the SOC (system on chip) of integrated each functional unit, central processing unit 207 is wherein controlled other each unit according to the working routine that sets in advance and is carried out work, the structure of this integration-in-one can reduce hardware device on the one hand, save cost, on the other hand, this integral type makes that signal time delay is able to conveniently be controlled, and is easy to realize that image shows that lighting the synchronous of sequential with backlight cooperates.And, owing to reduce hardware device, reduced circuit scale, also reduced complicacy, and then reduced the probability that breaks down owing to system, in addition, utilize the erasable characteristic of EEPROM to make this device be easy to management, be convenient to upgrading.
More than disclosed only be preferred implementation of the present invention; but the present invention is not limited thereto; any those skilled in the art can think do not have a creationary variation, and, all should drop in protection scope of the present invention not breaking away from some improvements and modifications of being done under the principle of the invention prerequisite.
Claims (10)
1. a liquid crystal indicator comprises backlight driver and LCDs, it is characterized in that, also comprises signal processing apparatus, and this signal processing apparatus is integrated by following unit integral:
First interface unit becomes YUV signal with the digital rgb conversion of signals of obtaining;
First extraction unit extracts the brightness data signal in described YUV signal;
Brightness normalization coefficient computing unit is according to described brightness data calculated signals brightness normalization coefficient;
Driving signal generating unit generates and the corresponding drive signal of this brightness normalization coefficient;
Second interface unit converts YUV signal to meet the LCDs interface specification signal, and exports LCDs to;
The 3rd interface unit, output drive signal is given the backlight driver corresponding with the backlight subregion;
Central processing unit is controlled other unit except that described central processing unit in first interface unit, first extraction unit, brightness normalization coefficient computing unit, driving signal generating unit, second interface unit and the 3rd interface unit that comprise at least in the signal processing apparatus according to the working routine that sets in advance.
2. device as claimed in claim 1 is characterized in that, described signal processing apparatus also comprises:
First storage unit is used for storing one or more of drive signal that brightness normalization coefficient that the YUV signal after described first interface unit conversion, the brightness data signal that described first extraction unit extracts, described brightness normalization coefficient computing unit calculate and described driving signal generating unit generate.
3. device as claimed in claim 2 is characterized in that, described signal processing apparatus also comprises:
The brightness correction unit is used to utilize the brightness normalization coefficient of described first cell stores that the YUV signal of described first cell stores is carried out brightness correction;
Described second interface unit also is used for being sent to LCDs with described through the YUV signal after the brightness correction.
4. device as claimed in claim 3 is characterized in that, also comprises:
Second extraction unit is used for from the YUV signal extraction chroma data signal of the process brightness correction of described first cell stores;
Second storage unit is used to store described chroma data signal;
Optimize the unit, be used to utilize the chroma data signal of described second cell stores, the YUV signal through brightness correction is carried out the colourity optimization process by a configurable two-dimentional reference table.
5. device as claimed in claim 4 is characterized in that, also comprises zoning unit and the 3rd storage unit;
Wherein, described zoning unit provides the subregion indication information for described central processing unit, calculates the brightness normalization coefficient of specifying the backlight subregion according to described subregion indication information so that described central processing unit is controlled described brightness normalization system-computed unit;
Described working routine that sets in advance and subregion indication information are kept in the 3rd storage unit.
6. a signal processing apparatus is characterized in that, this signal processing apparatus is integrated by following unit integral:
First interface unit becomes YUV signal with the digital rgb conversion of signals of obtaining;
First extraction unit extracts the brightness data signal in described YUV signal;
Brightness normalization coefficient computing unit is according to described brightness data calculated signals brightness normalization coefficient;
Driving signal generating unit generates and the corresponding drive signal of this brightness normalization coefficient;
Second interface unit converts YUV signal to meet the LCDs interface specification signal, and exports LCDs to;
The 3rd interface unit exports drive signal to backlight driver;
Central processing unit is used for according to the working routine that sets in advance other unit except that central processing unit that comprise first interface unit, first extraction unit, brightness normalization coefficient computing unit, driving signal generating unit and second interface unit and the 3rd interface unit at least of this signal processing apparatus being controlled.
7. device as claimed in claim 6 is characterized in that, also comprises:
First storage unit is used for storing one or more of drive signal that YUV signal after described first interface unit conversion, brightness normalization coefficient that described brightness normalization coefficient computing unit calculates and described driving signal generating unit generate.
8. device as claimed in claim 7 is characterized in that, described signal processing apparatus also comprises:
The brightness correction unit is used to utilize brightness normalization coefficient described in first storage unit that the YUV signal of described first cell stores is carried out brightness correction;
Described second interface unit also is used for being sent to LCDs with described through the YUV signal after the brightness correction.
9. device as claimed in claim 8 is characterized in that, also comprises:
Second extraction unit is used for from the YUV signal extraction chroma data signal of the process brightness correction of described first cell stores;
Second storage unit is used to store described chroma data signal;
Optimize the unit, be used to utilize the chroma data signal of described second cell stores, the YUV signal through brightness correction is carried out the colourity optimization process by a configurable two-dimentional reference table.
10. device as claimed in claim 9 is characterized in that, also comprises zoning unit and the 3rd storage unit;
Wherein, described zoning unit provides the subregion indication information for described central processing unit, calculates the brightness normalization coefficient of specifying the backlight subregion according to described subregion indication information so that described central processing unit is controlled described brightness normalization system-computed unit;
Described working routine that sets in advance and described subregion indication information are kept in the 3rd storage unit.
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| CN102270928A (en) * | 2010-06-07 | 2011-12-07 | 联咏科技股份有限公司 | Power conversion device and power conversion method |
| CN110473498A (en) * | 2018-05-11 | 2019-11-19 | 京东方科技集团股份有限公司 | For the method for adjusting display brightness, equipment, display device and storage medium |
| CN111400218B (en) * | 2020-03-10 | 2021-08-27 | 武汉精立电子技术有限公司 | MIPI high-speed signal generation method and system compatible with multiple data formats |
| US11475865B2 (en) | 2020-08-28 | 2022-10-18 | Apple Inc. | Backlight reconstruction and compensation |
| CN114257774A (en) * | 2022-01-29 | 2022-03-29 | 京东方科技集团股份有限公司 | Display processing method, display processing device, display device and readable storage medium |
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| JP2004061612A (en) * | 2002-07-25 | 2004-02-26 | Seiko Epson Corp | Semiconductor integrated circuit device, microcomputer and electronic equipment |
| CN1770248A (en) * | 2004-11-03 | 2006-05-10 | 上海华园微电子技术有限公司 | Display drive circuit for liquid crystal on silicon based on large-scale integrated circuit |
| CN1881011A (en) * | 2005-06-14 | 2006-12-20 | 群康科技(深圳)有限公司 | Backlight open control circuit |
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| JP2004061612A (en) * | 2002-07-25 | 2004-02-26 | Seiko Epson Corp | Semiconductor integrated circuit device, microcomputer and electronic equipment |
| CN1770248A (en) * | 2004-11-03 | 2006-05-10 | 上海华园微电子技术有限公司 | Display drive circuit for liquid crystal on silicon based on large-scale integrated circuit |
| CN1881011A (en) * | 2005-06-14 | 2006-12-20 | 群康科技(深圳)有限公司 | Backlight open control circuit |
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Address after: 266555, No. 218, Bay Road, Qingdao economic and Technological Development Zone, Shandong Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555, No. 218, Bay Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |