CN105100865A

CN105100865A - Multi-image display control method and apparatus

Info

Publication number: CN105100865A
Application number: CN201410198038.4A
Authority: CN
Inventors: 严方红; 王球
Original assignee: Shenzhen TCL New Technology Co Ltd
Current assignee: Shenzhen TCL New Technology Co Ltd
Priority date: 2014-05-12
Filing date: 2014-05-12
Publication date: 2015-11-25
Anticipated expiration: 2034-05-12
Also published as: CN105100865B

Abstract

The invention relates to a multi-image display control method. The method comprises the following steps of acquiring currently input source information when there are at least two source inputs and determining the number of display images and the resolution of each display image according to the currently input source information and the resolution of a display screen, wherein the display images include a master display image and a slave display image; comparing the resolution of the source image signal in each piece of source information and the resolution of a corresponding display image; extracting pixels from each source image signal according to the comparing result; merging each source image signal with pixels extracted to form a preset display image; and outputting and displaying the preset display image. Compared with a conventional multi-image display control method, the method makes the output image clearer and more lifelike on the basis that the original proportion format of the information source is maintained.

Description

The control method of multi-channel image processor and device

Technical field

The present invention relates to Display Technique field, particularly relate to a kind of control method and device of multi-channel image processor.

Background technology

Along with the development of science and technology, intelligent television is popularized, and existing intelligent television, except providing traditional television-viewing service, also can provide service on net, thus television set can obtain a lot of information sources.The control method of traditional TV set multi-picture display, processes for front end signal the time marquis of LCD screen display, causes display screen matrix to lose serious, information source definition is reduced, is unfavorable for the viewing of user.

Summary of the invention

Main purpose of the present invention is the device providing the control method of multi-channel image processor and identical inventive concept, the definition of picture when being intended to increase multihead display.

For achieving the above object, the control method of a kind of multi-channel image processor provided by the invention, comprises the following steps:

When there is the input of at least two information sources, obtain the information source information of current input, according to the information source information of current input and the quantity of resolution determination display frame of display screen and the resolution of each display frame; Described display frame comprises main display frame and sub-display frame;

The resolution of the picture signal of more each described information source and the resolution of corresponding display frame;

Pixel extraction is carried out according to the picture signal of the result compared to each described information source, if the Pixel Information that described pixel extraction is the often row pixel number of the picture signal of described information source or number of lines of pixels to be extracted the picture signal of described information source when being greater than often row pixel number or the number of lines of pixels of display frame is carried out merging and realized pixel extraction process, if the Pixel Information that when the often row pixel number of the picture signal of described information source or number of lines of pixels are less than often row pixel number or the number of lines of pixels of display frame, the picture signal of described information source extracts carries out separation realize pixel extraction process; Its intermediate-resolution=often row pixel number × number of lines of pixels;

The picture signal carrying out each described information source after pixel extraction is merged, forms preset display frame;

Export and show described preset display frame.

Preferably, obtain the information source information of current input, the quantity of resolution determination display frame and the resolution of each display frame of the described information source information according to current input and display screen comprise:

The first information source that receives is set as the main information source that main display frame is corresponding, and determines the number of sub-display frame according to the quantity of information source in current input information source information;

Obtain the ratio form of the picture signal of each information source in the information source information of described current input and the resolution of display screen;

Quantity according to the ratio form of the picture signal of described each information source, the resolution of display screen and sub-display frame determines the resolution of main display frame and the resolution of sub-display frame.

Preferably, the picture signal of the described result according to comparing to each described information source carries out pixel extraction and comprises:

When the pixel number of every a line of the picture signal of information source equals the pixel coordinate number of every a line of corresponding display frame; Extract the Pixel Information of the picture signal of described information source;

When the number of lines of pixels of each picture of the picture signal of information source equals the pixel column number of coordinates of corresponding display frame; Extract the Pixel Information of the picture signal of described information source;

When the pixel number of every a line of the picture signal of information source is greater than the pixel coordinate number of every a line of corresponding display frame; Extract the Pixel Information of the picture signal of described information source, pixel adjacent for same a line two is synthesized a pixel and carry out pixel synthesis process, equal the pixel coordinate number of every a line of corresponding display frame with the pixel number of the every a line making the picture signal of described information source;

When the pixel number of every a line of the picture signal of information source is less than the pixel coordinate number of every a line of corresponding display frame; Extract the Pixel Information of the picture signal of described information source, same a line pixel is divided into two adjacent pixels and carries out pixel separation process, equal the pixel coordinate number of every a line of corresponding display frame with the pixel number of the every a line making the picture signal of described information source;

When the number of lines of pixels of each picture of the picture signal of information source is greater than the pixel column number of coordinates of corresponding display frame; Extract the Pixel Information of the picture signal of described information source, pixel column adjacent for same picture two is synthesized a pixel column and carry out pixel synthesis process, equal the pixel column number of coordinates of corresponding display frame with the number of lines of pixels of the picture signal making described information source;

When the number of lines of pixels of each picture of the picture signal of information source is less than the pixel column number of coordinates of corresponding display frame; Extract the Pixel Information of the picture signal of described information source, same picture pixel column is divided into two adjacent pixel columns and carries out pixel separation process, equal the pixel column number of coordinates of corresponding display frame with the number of lines of pixels of the picture signal making described information source.

Preferably, described will carry out each described information source after pixel extraction picture signal merge, also comprise before forming preset display frame:

With the pixel coordinate of each display frame for benchmark carries out scan calibration process to the pixel coordinate of the picture signal of each information source.

Preferably, described will carry out each described information source after pixel extraction picture signal merge, form preset display frame and comprise:

The Pixel Information of the picture signal being positioned at same a line is merged into same pixel column;

After each row potting gum of same display frame, form described preset display frame.

The present invention proposes a kind of control device of multi-channel image processor further, comprising:

Resolution determination module: for when there is the input of at least two information sources, obtain the information source information of current input, according to the information source information of current input and the quantity of resolution determination display frame of display screen and the resolution of each display frame; Described display frame comprises main display frame and sub-display frame;

Resolution comparison module: for the resolution of the picture signal of more each described information source and the resolution of corresponding display frame;

Pixel extraction module: for carrying out pixel extraction according to the picture signal of the result compared to each described information source, if the Pixel Information that described pixel extraction is the often row pixel number of the picture signal of described information source or number of lines of pixels to be extracted the picture signal of described information source when being greater than often row pixel number or the number of lines of pixels of display frame is carried out merging and is realized pixel extraction process, if the Pixel Information that when the often row pixel number of the picture signal of described information source or number of lines of pixels are less than often row pixel number or the number of lines of pixels of display frame, the picture signal of described information source extracts is carried out separation and is realized pixel extraction process, its intermediate-resolution=often row pixel number × number of lines of pixels,

Picture merges module: for being merged by the picture signal carrying out each described information source after pixel extraction, form preset display frame;

Picture output module: for exporting and showing described preset display frame.

Preferably, described resolution determination module specifically for:

Obtain the ratio form of the picture signal of each information source in the information source information of described current input and the resolution for the display screen that carries described display frame;

Preferably, described pixel extraction module specifically for:

When the pixel number of every a line of the picture signal of information source equals the pixel coordinate number of every a line of corresponding display frame; Extract the Pixel Information of every a line of picture signal of described information source;

Preferably, the control device of multi-channel image processor also comprises:

Correction module, for the pixel coordinate of each display frame for benchmark carries out scan calibration process to the pixel coordinate of the picture signal of each information source.

Preferably, described picture merge module specifically for:

The present invention is by first determining the resolution of main display frame and the resolution of sub-display frame according to the resolution of current input information source information and display screen, compare according to the resolution of the picture signal of the resolution of display frame each information source corresponding to it again, when the merging treatment of the Pixel Information extracted is carried out in display frame when often row pixel number or number of lines of pixels are greater than often row pixel number or the number of lines of pixels of the picture signal of information source, if when being less than, carry out the separating treatment of Pixel Information to make the Pixel Information of display frame corresponding with the Pixel Information of the picture signal of each information source, then the pixel on the main screen signal after pixel extraction in same a line and sprite signal is merged, then the main screen signal after output display merging and sprite signal.Compare the control method of traditional multi-channel image processor, on the basis keeping the original ratio form of information source, make the picture of output more clear true to nature.

Accompanying drawing explanation

Fig. 1 is the schematic flow sheet of the first embodiment of the control method of multi-channel image processor of the present invention;

Fig. 2 is the schematic flow sheet of the second embodiment of the control method of multi-channel image processor of the present invention;

Fig. 3 is the high-level schematic functional block diagram of the first embodiment of the control device of multi-channel image processor of the present invention;

Fig. 4 is the high-level schematic functional block diagram of the second embodiment of the control device of multi-channel image processor of the present invention.

In order to make technical scheme of the present invention clearly, understand, be described in further detail below in conjunction with accompanying drawing.

Embodiment

Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

The invention provides a kind of control method of multi-channel image processor.

With reference to the schematic flow sheet that Fig. 1, Fig. 1 are the first embodiment of the control method of multi-channel image processor.

In one embodiment, the control method of this multi-channel image processor comprises:

Step S10, obtains the information source information of current input, according to the information source information of current input and the quantity of resolution determination display frame of display screen and the resolution of each display frame; Display frame comprises main display frame and sub-display frame; Wherein the information source information of current input comprises quantity, the ratio form and resolution etc. of information source.

The resolution of main display frame and the resolution of sub-display frame all should be determined according to the resolution of information source and display screen.In the present embodiment, information source (can be analog TV, DTV, AV, HDMI, VGA, Internet video etc.) is divided into a main display frame and multiple sub-display frame on a display screen, the resolution of main display frame is first determined according to the resolution of information source and display screen, under the prerequisite of the resolution of the main display frame of preferential guarantee, then determine the resolution of sub-display frame.The pixel of information source picture signal and each parameter determine the ratio form before main screen signal and the adjustment of sprite signal and resolution, and the resolution of display screen limits the highest valid pixel of main screen signal and sprite signal.Therefore, the resolution of main display frame and the resolution of sub-display frame to be determined according to the resolution of information source and display screen.

Step S20, the resolution of the picture signal of more each information source and the resolution of corresponding display frame;

Due to resolution=often row pixel number × number of lines of pixels, the then resolution of the picture signal of more each information source and the resolution of corresponding display frame, the i.e. pixel number of often going of the picture signal of more main information source or the pixel number of often going of number of lines of pixels and corresponding main display frame or number of lines of pixels, compares often capable pixel number or the number of lines of pixels of the pixel number of often going of the picture signal of component source or number of lines of pixels and corresponding sub-display frame.In the present embodiment, display screen is provided with a main display frame A and two sub-display frame B and C, and input source signal comprises main screen signal A1, sprite signal B1 and C1.By the resolution of A and the resolution of A1, the resolution of B and the resolution of B1, the resolution of C and the resolution of C1 compare respectively.

Step S30, according to the result compared, pixel extraction is carried out to the picture signal of each information source, if the Pixel Information extracted the picture signal of information source when the often row pixel number of the picture signal of information source or number of lines of pixels are greater than often row pixel number or the number of lines of pixels of display frame is carried out merging and realized pixel extraction process, if the pixel that when the often row pixel number of the picture signal of described information source or number of lines of pixels are less than often row pixel number or the number of lines of pixels of display frame, the picture signal of described information source extracts carries out separation realize pixel extraction process;

The pixel of resolution to main screen signal according to main display frame adjusts, and makes the resolution match of the pixel of main screen signal and main display frame; Pixel according to the resolution sprite signal of sub-display frame adjusts, and makes the resolution match of the pixel of sprite signal and sub-display frame.

Step S40, merges the picture signal carrying out each information source after pixel extraction, forms preset display frame;

Same a line of the picture signal of main information source and the picture signal of component source and same row pixel are merged.

Step S50, exports and shows preset display frame.

In the present embodiment, by first determining the resolution of main display frame and the resolution of sub-display frame according to the resolution of current input information source information and display screen, compare according to the resolution of the picture signal of the resolution of display frame each information source corresponding to it again, when the merging treatment of the Pixel Information extracted is carried out in display frame when often row pixel number or number of lines of pixels are greater than often row pixel number or the number of lines of pixels of the picture signal of information source, if when being less than, carry out the separating treatment of Pixel Information to make the Pixel Information of display frame corresponding with the Pixel Information of the picture signal of each information source, then the pixel on the main screen signal after pixel extraction in same a line and sprite signal is merged, then the main screen signal after output display merging and sprite signal.Compare the control method of traditional multi-channel image processor, on the basis keeping the original ratio form of information source, make the picture of output more clear true to nature.

In the above-described embodiments, step S10 comprises:

The first picture signal receiving information source is set as the main information source that main display frame is corresponding, and determines the number of sub-display frame according to the number of signal sources in the information source information of current input;

Detect the information source entering panel TV, the sequencing first entered according to information source selectes main information source, then determines the number of sub-display frame according to the quantity of information source.In the present embodiment, according to testing result, selected first information source entering panel TV set is main information source, deducts the quantity of main information source, obtain the number of sub-display frame by the total quantity of information source.When user only accesses a vision signal, television set automatically detects access signal and belongs to 4:3 ratio or 16:9 ratio form, belong to 16:9 ratio form to be then displayed in full screen, belong to the show state that 4:3 ratio form then calls last memory, a kind of state is left and right stretching full screen display, another kind of state is according to the original ratio of signal, display in the middle of screen.When user continues access more than 2 input signals, television set using first access input signal as main information source, after first, the vision signal of access is as component source, or user interferes, reselect the display of main display frame, remaining signal is as the display of sub-display frame.As fruit display frame has not had position to hold, then according to the principle of first in first out, or user interferes, and selects certain sprite signal as preferential display.

Obtain the ratio form of the picture signal of each information source in the information source information of current input and the resolution for the display screen that carries display frame;

According to the result detected, after determining main information source, determine the ratio form of main screen signal again, in the present embodiment, (can be analog TV when the display video signal of new access being detected, DTV, AV, HDMI, VGA, Internet video etc.), the scan period of often going of the picture signal of the main information source of automatic detection and the scan period of every picture, thus calculate line frequency and field frequency, again in conjunction with the signalling channel at the picture signal place of main information source, to table look-up 1 (seeing attached list 1) according to line frequency and field frequency, the picture signal obtaining current main information source belongs to 4:3 or 16:9 ratio format signal, if current demand signal passage is at RGB (i.e. pcs signal), then all signal proportion forms are all 4:3, detect that line frequency and field frequency are 15.734KHz, 60Hz respectively if current demand signal passage is HDMI, MCU, then signal proportion form is 4:3, if line frequency and field frequency are 45KHz, 60Hz respectively, then signal proportion form is 16:9, i.e. in the information source information of current input, the line frequency of the picture signal of each information source and field frequency and signalling channel type are by searching preset map table determination ratio form.

Table 1

Quantity according to the ratio form of each information source picture signal, the resolution of display screen and sub-display frame determines the resolution of main display frame and the resolution of sub-display frame.

Further, in the present embodiment, the resolution of main display frame is first determined according to the ratio form of main information source picture signal and the resolution of display screen, namely first determine that main display frame accounts for the area size of display screen, then determine the resolution of every sub-display frame according to area size, the ratio form of component source picture signal and the quantity of component source picture signal that display screen is left.

The ratio form of the picture signal of each information source obtained according to tabling look-up, the sub-display frame number detected, and the resolution of display screen divides the resolution of main display frame and the resolution of sub-display frame.In the present embodiment, display screen is resolution is 3840*2160, and ratio form is the LCD screen of 16:9.Namely the often row of display screen has 3840 pixels, and every picture has 2160 number of lines of pixels.

Pixel coordinate and number of lines of pixels: according to the resolution of display frame, be divided into some grids uniformly by display frame, and each grid represents a pixel coordinate, and each pixel coordinate represents the position that arranges pixel; Every a line grid represents a pixel column coordinate, and each pixel column coordinate represents the position that arranges pixel column.Such as, the resolution of display screen is 3840*2160, and the pixel coordinate number that so the often row of display screen just comprises 3840 pixel coordinates namely often capable is 3840, and the number of lines of pixels that display screen comprises 2160 pixel column coordinates and display screen is 2160 row.Wherein pixel comprises brightness value corresponding on pixel coordinate and this coordinate, the pixel number that namely the pixel coordinate number of often going often goes.

When ratio form main screen signal being detected is 4:3, calculate the resolution of main display frame according to 4:3:

With the pixel standard of behaviour, then the line number that main display frame comprises is 2160;

The pixel quantity that main display frame is often gone is 2160*4/3=2880, i.e. the resolution of main display frame is 2880*2160.

The pixel coordinate number of often going remaining after display screen deducting main display frame and number of lines of pixels are given sub-display frame, and remaining pixel coordinate number and number of lines of pixels are:

The pixel coordinate number that sub-display frame is often gone is: 3840-2880=960; The number of lines of pixels that sub-display frame comprises is 2160,

If when the ratio form of sprite signal being detected also for 4:3, when the number of sub-display frame is 1-3, the pixel coordinate number of often going of every sub-display frame is 960, and the line number of every sub-display frame is 960*3/4=720, i.e. the resolution of sub-display frame is 960*720;

When the number of group display frame is 4, in order to obtain more sub-display frame, with remaining line number for benchmark calculates, the line number of every sub-display frame is 2160/4=540; The pixel coordinate number of often going of every sub-display frame is 540*4/3=720, i.e. the resolution of sub-display frame is 720*540, the like;

If when the ratio form of sprite signal being detected also for 16:9, when the number of sub-display frame is 1-4, the pixel coordinate number of often going of every sub-display frame is 960, and the line number of every sub-display frame is 960*9/16=540, i.e. the resolution of sub-display frame is 960*540;

When the number of group display frame is 5, the line number of every sub-display frame is 2160/5=432; The pixel coordinate number of often going of every sub-display frame is 432*16/9=912, i.e. the resolution of sub-display frame is 912*432, the like.

When ratio form main screen signal being detected is 16:9, calculate the resolution of main display frame according to ratio form 16:9 according to foregoing description:

So that often row pixel is for benchmark, then the main display frame pixel coordinate number that often row comprises is 2880;

The number of lines of pixels of main display frame is 2880*9/16=1620, i.e. the resolution of main display frame is 2880*1620.

When being 16:9 by the ratio form of description main screen signal, determine the process of the resolution of sprite below:

The often row pixel coordinate remaining by display screen and pixel column coordinate give sub-display frame.Main display frame is arranged on the upper left side of display screen, the region be left on the right of display screen is set to Part I, region remaining below display screen is set to Part II.Sub-display frame, when selecting arrangement position, preferentially uses the Part I of display screen.

The pixel coordinate number that display screen is remaining and pixel column number of coordinates are:

Part I, the pixel coordinate number that sub-display frame is often gone is: 3840-2880=960; The number of lines of pixels comprised is 1620;

Part II, the pixel coordinate number that sub-display frame is often gone is 3840, and the pixel column number of coordinates comprised is 2160-1620=540;

If when ratio form sprite signal being detected is 4:3, the pixel coordinate number of often going of every sub-display frame of Part I is 960, and the row-coordinate number of every sub-display frame is 960*3/4=720, i.e. the resolution of sub-display frame is 960*720.Compare pixel coordinate number and the pixel column number of coordinates of display screen matrix number of coordinates and pixel column number of coordinates and every sub-display frame shared by Part I, 960*1620=960*720*2.25 namely Part I just can comprise the sub-display frame that 2.25 resolution are 960*720.

The row-coordinate number of Part II every sub-display frame is 2160/4=540; The pixel coordinate number of often going of every sub-display frame is 540*4/3=720, namely the resolution of sub-display frame is 720*540,3840*540=720*540*5.3, namely Part II can comprise the sub-display frame that 5 resolution are 720*540, to sum up, display screen, except the main display frame comprising a 2880*1620, also can comprise the sub-display frame that sub-display frame that 2 resolution are 960*720 and 5 resolution are 720*540.

If when the ratio form of sprite signal being detected also for 16:9, the pixel coordinate number of often going of every sub-display frame is 960, and the row-coordinate number of every sub-display frame is 960*9/16=540, i.e. the resolution of sub-display frame is 960*540.The quantity of the sub-display frame that Part I comprises is that namely 960*1620=960*540*3 comprises 3 sub-display frames, and the sub-display frame quantity that the region of Part II comprises is 3840*540=960*4*540, namely comprises 4 sub-display frames.To sum up, when the ratio form of group picture signal is also 16:9, display screen is except comprising main display frame that a resolution is 2880*1620, Part I also can comprise the sub-display frame that 3 resolution are 960*540, and Part II can comprise the sub-display frame that 4 resolution are 960*540.

Certainly, also can with the signal source of 90% reproduction ratio display 16:9 ratio form, then every for vision signal every trade head and end of line are removed 5%, the source signal leaving 90% of centre carries out above-mentioned process, test proves, affect user so hardly and watch program, and the requirement of GB more than 90% reproduction ratio can be met.

The resolution of each display frame and the resolution of sub-display frame is determined by the ratio form according to each picture signal, the number of sub-display frame and the resolution of display screen, the resolution of sprite signal is determined again when especially formerly determining the resolution of main screen signal, under the prerequisite of the displaying ratio form and resolution that fully meet main display frame, the resolution of rational sub-display frame can be obtained.

In the above-described embodiments, step S30 specifically comprises:

When the pixel number of every a line of the picture signal of information source equals the pixel number of every a line of corresponding display frame; The pixel that the picture signal extracting information source is often gone;

When the number of lines of pixels of each picture of the picture signal of information source equals the number of lines of pixels of corresponding display frame; Extract the pixel of each pixel column of picture signal of information source;

Namely when the pixel number of often going of main information source picture signal equals the pixel number (also can be pixel coordinate number) of main display frame, when the number of lines of pixels of main information source picture signal equals the number of lines of pixels of main display frame, extract the pixel that main information source picture signal is often gone; When the pixel number of often going of component source picture signal equals the pixel number of often going of sub-display frame, when the number of lines of pixels of component source picture signal equals the number of lines of pixels of sub-display frame, extract the pixel of component source picture signal every pixel column.

When the pixel number of every a line of the picture signal of information source is greater than the pixel number of every a line of corresponding display frame; The pixel that the picture signal extracting information source is often gone, synthesizes a pixel and carries out pixel synthesis process, equal the pixel number of every a line of corresponding display frame with the pixel number of the every a line making the picture signal of information source by pixel adjacent for same a line two;

The pixel coordinate of the pixel of main screen signal and the main display frame of display screen is carried out scanning compare, when the pixel number of every a line of main screen signal is greater than the pixel number of every a line of main display frame, carry out the extraction of neighbor pixel.When the pixel number that main screen signal is often gone is greater than the pixel number that main display frame often goes, then two pixels of main screen signal drop on left side and the right side of a main display frame pixel coordinate, these two main screen signal pixel brightness values are respectively extracted 50%, the part that then will propose is added, and the brightness value corresponding as pixel coordinate is corresponding with a pixel coordinate of main display frame;

The pixel coordinate of the pixel coordinate of sprite signal and the sub-display frame of display screen is carried out scanning compare, when the pixel number of every a line of group picture signal is greater than the pixel number of every a line of sub-display frame, carry out the extraction of neighbor.When the pixel number that group picture signal is often gone is greater than the pixel number that sub-display frame often goes, then two pixels of sprite signal drop on left side and the right side of a display screen pixel coordinate, these two sub-picture signal pixel brightness values are respectively extracted 50%, then the part proposed is added, corresponding as a pixel and display screen pixel coordinate.

When the pixel number of every a line of the picture signal of information source is less than the pixel number of every a line of corresponding display frame; Extract the pixel that the picture signal of information source is often gone, same a line pixel is divided into two adjacent pixels and carries out pixel separation process, equal the pixel number of every a line of corresponding display frame with the pixel number of the every a line making the picture signal of information source;

The pixel coordinate of the pixel of main screen signal and the main display frame of display screen is carried out scanning compare, carry out the insertion of neighbor when the pixel number of every a line of main screen signal is less than pixel number (i.e. the pixel coordinate number) of every a line of main display frame.When the pixel number that main screen signal is often gone is less than the pixel number that main display frame often goes, then a pixel of main screen signal drops on the centre of display screen two pixel coordinates, now this main screen signal pixel is divided into two pixels, the brightness value of each pixel after point respectively accounts for 50%, two pixel coordinates of the main display frame of two pixels corresponding display screens of difference after point;

The pixel coordinate of the pixel of sprite signal and the sub-display frame of display screen is carried out scanning compare, when the pixel number of every a line of group picture signal is less than the pixel number of every a line of sub-display frame, carry out the insertion of neighbor pixel.When the pixel number that group picture signal is often gone is less than the pixel coordinate number that sub-display frame often goes, then a pixel of sprite signal drops on the centre of display screen two pixel coordinates, now this sub-picture signal pixel is divided into two pixels, the brightness value of each pixel after point respectively accounts for 50%, two pixel coordinates of the sub-display frame of two pixels corresponding display screens of difference after point.

When the number of lines of pixels of each picture of the picture signal of information source is greater than the pixel column number of coordinates of corresponding display frame; Extract the pixel of the every pixel column of picture signal of information source, pixel column adjacent for same picture two is synthesized a pixel column and carry out pixel synthesis process, equal the pixel column number of coordinates (i.e. number of lines of pixels) of corresponding display frame with the number of lines of pixels of the picture signal making information source;

The pixel column coordinate of the pixel column of main screen signal and the main display frame of display screen is carried out scanning compare, when the number of lines of pixels of each picture of main screen signal is greater than the pixel column number of coordinates of main display frame; Carry out the extraction of adjacent lines of pixels.When the number of lines of pixels that main screen signal is often gone is greater than the pixel column number of coordinates that main display frame often goes, then two pixel columns of main screen signal drop on left side and the right side of a display screen pixel column coordinate, these two main screen signal pixel column brightness values are respectively extracted 50%, then the part proposed is added, corresponding as a pixel column and display screen pixel column coordinate;

The pixel column coordinate of the pixel column of sprite signal and the sub-display frame of display screen is carried out scanning compare, when the number of lines of pixels of each picture of group picture signal is greater than the pixel column number of coordinates of sub-display frame, carry out the extraction of adjacent lines of pixels.When the pixel column number of the every picture of group picture signal is greater than the pixel column number of coordinates that sub-display frame often goes, then two pixel columns of sprite signal drop on left side and the right side of a display screen pixel column coordinate, these two sub-picture signal pixel column brightness values are respectively extracted 50%, then the part proposed is added, corresponding as a pixel column and display screen pixel column coordinate.

When the number of lines of pixels of each picture of the picture signal of information source is less than the pixel column number of coordinates of corresponding display frame; Extract the pixel of the every pixel column of picture signal of information source, same picture pixel column is divided into two adjacent pixel columns and carries out pixel separation process, equal the pixel column number of coordinates of corresponding display frame with the number of lines of pixels of the picture signal making information source;

The pixel column coordinate of the pixel column of main screen signal and the main display frame of display screen is carried out scanning compare, when the number of lines of pixels of each picture of main screen signal is less than the pixel column number of coordinates of main display frame, carry out the insertion of adjacent lines of pixels.When the number of lines of pixels of main screen signal is less than the pixel column number of coordinates that main display frame often goes, then a pixel column of main screen signal drops on the centre of display screen two pixel column coordinates, now this main screen signal pixel column is divided into two pixel columns, the brightness value of each pixel column after point respectively accounts for 50%, two pixel column coordinates of the main display frame of two pixel columns corresponding display screens of difference after point;

The pixel column coordinate of the pixel column of sprite signal and the sub-display frame of display screen is carried out scanning compare, when the number of lines of pixels of each picture of group picture signal is less than the pixel column number of coordinates of sub-display frame, carry out the insertion of adjacent lines of pixels.When the number of lines of pixels that group picture signal is often gone is less than the pixel column number of coordinates that sub-display frame often goes, then a pixel column of sprite signal drops on the centre of display screen two pixel column coordinates, now this sub-picture signal pixel column is divided into two pixel columns, the brightness value of each pixel column after point respectively accounts for 50%, two pixel column coordinates of the sub-display frame of two pixel columns corresponding display screens of difference after point.

By the resolution according to main display frame, pixel extraction is carried out to main screen signal, resolution sprite signal according to sub-display frame carries out pixel extraction, make the pixel coordinate of the main display frame of the pixel of main screen signal and display screen corresponding, make the pixel column coordinate of the main display frame of the pixel column of main screen signal and display screen corresponding; Make the pixel coordinate of the sub-display frame of the pixel of sprite signal and display screen corresponding, make the row-coordinate of the sub-display frame of the pixel column of sprite signal and display screen corresponding, have the definition utilizing and ensure main screen signal and sprite signal.

With reference to the schematic flow sheet that Fig. 2, Fig. 2 are the second embodiment of the control method of multi-channel image processor.

On the basis of above-described embodiment, before execution step S40, the control method of multi-channel image processor of the present invention also comprises:

Step S60: with the pixel coordinate of each display frame for benchmark carries out scan calibration process to the pixel coordinate of the picture signal of each information source;

In the above-described embodiments, make the quantity of pixel coordinate in winner's display frame equal with pixel number on the picture signal of main information source, in sub-display frame, the quantity of pixel coordinate is equal with pixel number on sprite signal.But each pixel on main screen signal is not necessarily aimed at each pixel coordinate just, now, with the pixel coordinate of the main display frame of display screen for benchmark, carry out scan calibration to the pixel that main screen signal is often gone, the pixel coordinate making it display frame main with display screen is aimed at.In like manner, each pixel on sprite signal is not necessarily aimed at each pixel coordinate just, now, with the pixel coordinate of often going of the sub-display frame of display screen for benchmark, the pixel coordinate that sprite signal is often gone carries out scan calibration, and the pixel coordinate that sprite signal is often gone is aimed at the pixel coordinate of the sub-display frame of display screen.

In the present embodiment, by the pixel coordinate scan calibration to main screen signal, make the pixel coordinate one_to_one corresponding of each pixel coordinate of main screen signal and the main display frame of display screen; By the pixel coordinate scan calibration of sprite signal, make the pixel coordinate one_to_one corresponding of each pixel coordinate of sprite signal and the sub-display frame of display screen.Be conducive to the potting gum to main screen signal and sprite signal.

On the basis of above-described embodiment, step S40 specifically comprises:

The potting gum of the picture signal being positioned at same a line is become same pixel column; After each row potting gum of same display frame, form preset display frame;

At the pixel of main screen signal and the pixel coordinate one_to_one corresponding of the main display frame of display screen, after the pixel coordinate one_to_one corresponding of the pixel coordinate of sprite signal and the sub-display frame of display screen, display screen is combined with the picture element scan in a line, makes display screen becomes a pixel column with the potting gum in a line; When the pixel of row all on display screen all merges well, all pixel columns are combined, and form the preset display frame for exporting.

By by after all potting gum in every a line, form a complete exportable preset display frame, be conducive to the output that main screen signal is complete together with sprite signal.

The present invention further provides a kind of control device of multi-channel image processor.

With reference to the high-level schematic functional block diagram that Fig. 3, Fig. 3 are control device first embodiment of multi-channel image processor of the present invention.

In one embodiment, the control device of multi-channel image processor comprises:

Resolution determination module 10: for obtaining the information source information of current input, according to the information source information of current input and the quantity of resolution determination display frame of display screen and the resolution of each display frame; Display frame comprises main display frame and sub-display frame; Wherein the information source information of current input comprises quantity, the ratio form and resolution etc. of information source.

Resolution comparison module 20: for the resolution of the picture signal of more each information source and the resolution of corresponding display frame;

Pixel extraction module 30: for carrying out pixel extraction according to the result compared to the picture signal of each information source, if the Pixel Information extracted the picture signal of information source when the often row pixel number of the picture signal of information source or number of lines of pixels are greater than often row pixel number or the number of lines of pixels of display frame is carried out merging and realized pixel extraction process, if the pixel that when the often row pixel number of the picture signal of described information source or number of lines of pixels are less than often row pixel number or the number of lines of pixels of display frame, the picture signal of described information source extracts carries out separation realize pixel extraction process;

Picture merges module 40: for being merged by the picture signal carrying out each information source after pixel extraction, form preset display frame;

Picture output module 50: for exporting and showing preset display frame.

By first determining the resolution of main display frame and the resolution of sub-display frame according to the resolution of current input information source information and display screen, compare according to the resolution of the picture signal of the resolution of display frame each information source corresponding to it again, when the merging treatment of the Pixel Information extracted is carried out in display frame when often row pixel number or number of lines of pixels are greater than often row pixel number or the number of lines of pixels of the picture signal of information source, if when being less than, carry out the separating treatment of Pixel Information to make the Pixel Information of display frame corresponding with the Pixel Information of the picture signal of each information source, then the pixel on the main screen signal after pixel extraction in same a line and sprite signal is merged, then the main screen signal after output display merging and sprite signal.Compare the control device of traditional multi-channel image processor, on the basis keeping the original ratio form of information source, make the picture of output more clear true to nature.

In the present embodiment, resolution determination module 10 specifically for:

Detect the information source entering panel TV, the sequencing first entered according to information source selectes main information source, then determines the number of sub-display frame according to the quantity of information source.In the present embodiment, according to testing result, selected first information source entering panel TV set is main information source, deducts the quantity of main information source, obtain the number of sub-display frame by the total quantity of information source.When user only accesses a vision signal, television set automatically detects access signal and belongs to 4:3 ratio or 16:9 ratio form, belong to 16:9 ratio form to be then displayed in full screen, belong to the show state that 4:3 ratio form then calls last memory, a kind of state is left and right stretching full screen display, another kind of state is according to the original ratio of signal, display in the middle of screen.When user continues access more than 2 input signals, television set using first access input signal as main display frame, after first, the vision signal of access is as sub-display frame, or user interferes, reselect the display of main display frame, remaining signal is as sub-display frame.As fruit display frame has not had position to hold, then according to the principle of first in first out, or user interferes, and selects certain sprite signal as preferential display.

Table 1

The ratio form of the main screen signal obtained according to tabling look-up, the sub-display frame number detected, and the resolution of display screen divides the resolution of main display frame and the resolution of sub-display frame.In the present embodiment, display screen is resolution is 3840*2160, and ratio form is the LCD screen of 16:9.Namely the often row of display screen has 3840 pixels, and every picture has 2160 number of lines of pixels.

Pixel extraction module 30 specifically for:

With reference to the schematic flow sheet that Fig. 4, Fig. 4 are the second embodiment of the control device of multi-channel image processor.

On the basis of above-described embodiment, the control device of multi-channel image processor of the present invention also comprises:

Correction module 60: for the pixel coordinate of each display frame for benchmark carries out scan calibration process to the pixel coordinate of the picture signal of each information source;

On the basis of above-described embodiment, merge module specifically for:

These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.

Claims

1. a control method for multi-channel image processor, is characterized in that, comprising:

The resolution of the picture signal of information source described in more each described information source information and the resolution of corresponding display frame;

Pixel extraction is carried out according to the picture signal of the result compared to each described information source, if the pixel that described pixel extraction is the often row pixel number of the picture signal of described information source or number of lines of pixels to be extracted the picture signal of described information source when being greater than often row pixel number or the number of lines of pixels of display frame is carried out merging and realized pixel extraction process, if the pixel that when the often row pixel number of the picture signal of described information source or number of lines of pixels are less than often row pixel number or the number of lines of pixels of display frame, the picture signal of described information source extracts carries out separation realize pixel extraction process; Its intermediate-resolution=often row pixel number × number of lines of pixels;

Export and show described preset display frame.

2. method according to claim 1, is characterized in that, obtains the information source information of current input, and the quantity of resolution determination display frame and the resolution of each display frame of the described information source information according to current input and display screen comprise:

3. method according to claim 2, is characterized in that, the picture signal of the described result according to comparing to each described information source carries out pixel extraction and specifically comprise:

When the pixel number of every a line of the picture signal of information source equals the pixel number of every a line of corresponding display frame; The pixel that the picture signal extracting described information source is often gone;

When the number of lines of pixels of each picture of the picture signal of information source equals the number of lines of pixels of corresponding display frame; Extract the pixel of each pixel column of picture signal of described information source;

When the pixel number of every a line of the picture signal of information source is greater than the pixel number of every a line of corresponding display frame; The pixel that the picture signal extracting described information source is often gone, pixel adjacent for same a line two is synthesized a pixel and carry out pixel synthesis process, equal the pixel number of every a line of corresponding display frame with the pixel number of the every a line making the picture signal of described information source;

When the pixel number of every a line of the picture signal of information source is less than the pixel number of every a line of corresponding display frame; Extract the pixel of often going of the picture signal of described information source, same a line pixel is divided into two adjacent pixels and carries out pixel separation process, equal the pixel number of every a line of corresponding display frame with the pixel number of the every a line making the picture signal of described information source;

When the number of lines of pixels of each picture of the picture signal of information source is greater than the number of lines of pixels of corresponding display frame; Extract the pixel of every pixel column of the picture signal of described information source, pixel column adjacent for same picture two is synthesized a pixel column and carry out pixel synthesis process, equal the number of lines of pixels of corresponding display frame with the number of lines of pixels of the picture signal making described information source;

When the number of lines of pixels of each picture of the picture signal of information source is less than the number of lines of pixels of corresponding display frame; Extract the pixel of every pixel column of the picture signal of described information source, same picture pixel column is divided into two adjacent pixel columns and carries out pixel separation process, equal the number of lines of pixels of corresponding display frame with the number of lines of pixels of the picture signal making described information source.

4. method according to claim 3, is characterized in that, described will carry out each described information source after pixel extraction picture signal merge, also comprise before forming preset display frame:

5. method according to claim 4, is characterized in that, described will carry out each described information source after pixel extraction picture signal merge, form preset display frame and comprise:

6. a control device for multi-channel image processor, is characterized in that, comprising:

7. the control device of multi-channel image processor according to claim 6, is characterized in that, described resolution determination module specifically for:

8. the control device of multi-channel image processor according to claim 7, is characterized in that, described pixel extraction module specifically for:

When the number of lines of pixels of each picture of the picture signal of information source equals the number of lines of pixels of corresponding display frame; Extract the pixel of each pixel of picture signal of described information source;

9. the control device of multi-channel image processor according to claim 8, is characterized in that, also comprises:

10. the control device of multi-channel image processor according to claim 9, is characterized in that, described picture merge module specifically for: