CN101795366A - Progressive channel switching method and television using same - Google Patents
Progressive channel switching method and television using same Download PDFInfo
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- CN101795366A CN101795366A CN200910014071A CN200910014071A CN101795366A CN 101795366 A CN101795366 A CN 101795366A CN 200910014071 A CN200910014071 A CN 200910014071A CN 200910014071 A CN200910014071 A CN 200910014071A CN 101795366 A CN101795366 A CN 101795366A
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Abstract
The invention discloses a progressive channel switching method and a television using the method. The method comprises the following steps: in the process of communication channel switch or frequency channel switch, displaying the image of the current communication channel or current frequency channel at first, then reading image information of the communication channel or frequency channel to be switched, and dividing the image of the communication channel or the frequency channel to be switched into N parts and processing one by one according to a sequence so as to replacing parts corresponding to the current image one by one until the image of the communication channel or the frequency channel to be switched is completely replaced by the current image. The progressive channel switching method provided by the invention adopts the image of the communication channel or the frequency channel to be switched to replace the image of the current communication channel or the frequency channel, thus achieving the display effect of image progressive switch in the process of channel switching, and overcoming the problems of flicker, monotone and the like in the channel switching method of the television. At the same time, the channel switching process is more humanized and interesting, thus being favor of boosting the whole performance quality of the television products.
Description
Technical field
The invention belongs to technical field of video image processing, specifically, relate to a kind of implementation method of progressive channel switching and the television set of adopting said method.
Background technology
Switching channels, conversion information source are TV user one of the most frequently used modes of operation that arrives when watching TV programme.Traditional television set, set-top box and other video display apparatus are in manufacturing and designing process, switch or change the realization of platform technology for channel, generally all be to adopt earlier fixing current channel or channel image, and then switch to the image that desire is set channel or channel; Perhaps first blank screen in channel or channel handoff procedure is treated that complete machine is finished and is shown that desire sets the designs such as image of channel or channel behind the change action again.Because phenomenons such as screen sudden strain of a muscle can take place in the moment in channel or channel switching, therefore, have had a strong impact on the visual experience of TV user.And this channel, channel switching mode are also relatively more dull, stiff, do not possess interest.
Summary of the invention
The present invention is in order to solve the problem that screen flicker easily takes place existing channel switching mode, a kind of implementation method of progressive channel switching is provided, utilize the image of desiring switching channels or channel to replace the image of current channel or channel gradually, gradual change type switches the effect that shows during channel, channel switch thereby reach, to avoid the generation of screen flicker.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of progressive channel switching method, in channel switching or channel handoff procedure, the image that at first shows current channel or current channel, read the image information of desiring switching channels or channel then, and the image that will desire switching channels or channel is divided into N part and processing one by one in order, and then replace part corresponding with it in the present image one by one, till the image of desiring switching channels or channel is replaced present image fully; Wherein, N is the natural number greater than 1.
Further, in the process that present image is replaced one by one, read each frame image information of desiring switching channels or channel, if the existing M of former frame image partly has been performed the processing replacement operation, at first handle the preceding M+1 part of described back one two field picture so for a two field picture thereafter, and the appropriate section of present image is replaced; And then handle follow-up various piece in order one by one and replace part corresponding with it in the present image one by one; Wherein, described M is the natural number smaller or equal to N.
Further again, the described replacement process of handling one by one can carry out according to predefined channel switch speed; Perhaps carry out according to the inbound pacing of the two field picture of desiring switching channels or channel.
Preferably, after the image of the described desire switching channels that reads or channel carried out line by line or get, handle by column selection, replace present image line by line or by row.
Based on above-mentioned gradual implementation method of changing platform, the present invention provides a kind of television set that adopts this gradual channel switching method again, comprises chief components such as video reception unit, video format processing converter, video memory, image-display units; Wherein,
The video reception unit is used for receiving the image information of current channel or channel, and when receiving channel switching or channel switching instruction, transfers to receive the image information from desiring switching channels or channel, and the generation data image signal is exported;
Video format is handled converter, be used in channel switching or channel handoff procedure, receive the data image signal of described video reception unit output, and two field picture is divided into N part, after choosing processing one by one in order, export video memory to, and then replace out part corresponding with it in the present image of described image memory stores one by one, till a certain two field picture of desiring switching channels or channel is replaced present image fully; Wherein, described N is the natural number greater than 1;
Image-display units is used for reading each frame image information of storing in the described video memory, and shows.
Further, in the process that present image is replaced one by one, described video format is handled converter and is read each frame image information of desiring switching channels or channel, if the existing M of former frame image partly has been performed the processing replacement operation, at first handle the preceding M+1 part of described back one two field picture so for a two field picture thereafter, and export video memory to the appropriate section of the present image of its storage is replaced; And then handle follow-up various piece in order one by one and replace in the video memory part corresponding with it in the present image one by one; Wherein, described M is the natural number smaller or equal to N.
Further again, described video format is handled converter and is read appropriate section in described desire switching channels or this moment two field picture of channel according to predefined channel switch speed or according to the inbound pacing of the two field picture of desiring switching channels or channel, and export video memory after handling to, and then replace out part corresponding with it in the present image of described image memory stores.
Further, in the custom menu of described television set, be provided with the selection control switch that changes the platform mode, can change the platform mode according to the customer requirements adjustment.
Preferably, after described video format is handled that converter carries out line by line the image of the described desire switching channels that reads or channel or is got, handles by column selection, replace out part corresponding with it in the present image of described image memory stores line by line or by row, to realize that curtain-type changes the platform effect.
Compared with prior art, advantage of the present invention and good effect are: the progressive channel switching implementation method utilization desire switching channels proposed by the invention or the image of channel are replaced the image of current channel or channel gradually, thereby reached a kind of display effect of the progressive conversion of image when changing platform, overcome conventional television and changed problems such as platform flicker, dullness.Make that simultaneously changing the platform process has hommization, interest, helps to promote the complete machine performance quality of tv product.
After reading the detailed description of embodiment of the present invention in conjunction with the accompanying drawings, other characteristics of the present invention and advantage will become clearer.
Description of drawings
Fig. 1 is the schematic block circuit diagram of a kind of embodiment of the television set with progressive channel switching function proposed by the invention;
Fig. 2 is the program flow chart of a kind of embodiment of progressive channel switching implementation method proposed by the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.
The invention provides the display mode of a kind of video display apparatus image when channel switching or channel switching, be divided into several portions by the image that will desire switching channels or channel, and handle one by one according to a definite sequence, and then replace in the present image corresponding with it part one by one, till the image of desiring switching channels or channel is replaced present image fully, thereby realized a kind of display effect of desiring switching channels or channel image that carries out the transition to gradually from current channel or channel image, effectively avoided the generation of screen flicker, make that simultaneously the image switching process is more lively, have more interest.
Be that example elaborates the specific implementation process of described progressive channel switching implementation method and required hardware supports below with the television set.
Embodiment one, at first introduces the hardware composition into realizing that progressive channel switching function television set is required.Referring to shown in Figure 1, mainly comprise parts such as video reception unit, video format processing converter, video memory, image-display units and CPU.Below the concrete composition of each several part and the function of being finished are described in detail.
Described video reception unit is used for receiving the image information from different channels or channel, and generates data image signal output.Such as: the tuner that is used to receive the TV RF signals RF that TV station sends be can comprise, AV, YC, VGA or HDMI signal etc. perhaps are used for receiving from other video processing equipments or memory device (such as set-top box, video disc player or computer etc.).When TV user is selected TV reception, receive the RF radiofrequency signal that TV station sends by tuner, and then after the radiofrequency signal that receives carried out demodulation process, be separated into vision signal and audio signal is exported respectively.Wherein, for analog video signal, by analog to digital converter vision signal is become digital signal from analog signal conversion after, export follow-up television set main decoder plate to.When the user selects to watch image information from external video treatment facility or memory device, at first the video reception passage is switched to selected outside source.If the television set of present embodiment has the multiple signals passage, then a multi-channel switch circuit need be set in described video reception unit, control described switching circuit execution passage change action according to the outside source that the user selectes, to receive the picture signal of selected signal source output.Can be converted to after the digital signal line output again by analog to digital converter for analog picture signal; Can directly export follow-up main decoder plate for data image signal to handles.When TV user did not trigger channel switching or channel switching instruction, described video reception unit received the image information of current channel or channel, and after it was handled and changes, the output digital image signal was to television set main decoder plate.When the video reception unit receives that channel that TV user sends switches or during channel switching instruction, then receive from the image information of desiring switching channels or channel.Described channel or channel switching instruction trigger output by TV user by the keypad that is provided with on remote controller or the television set, after the identification of the CPU on the television set main decoder plate, handling, generate control signal corresponding and transfer to described video reception unit, carry out the correct switching of channel or channel to control described video reception unit.
Described video memory is arranged on the television set main decoder plate, is used for storing each frame image information after the digitized processing.
Described image-display units is used for each frame image information of storing in the reading images memory, exports indicative control unit to after by digital to analog converter data image signal being converted to analog signal, with driving display spare display video programs.
Described video format is handled converter and is arranged on the television set main decoder plate, receive the data image signal of above-mentioned video reception unit output frame by frame, and when television set normal play video program, after the data image signal that receives carried out digitized processing, be stored in the video memory frame by frame.When TV user is carried out channel switching or channel handover operation, described video format is handled the data image signal from desire switching channels or channel that converter receives the output of above-mentioned video reception unit frame by frame, and a two field picture that will receive is divided into N part, after choosing processing one by one in order, export video memory to, and then replace out corresponding with it part in the present image of the original storage of described video memory one by one, till a certain two field picture of desiring switching channels or channel is replaced present image fully, thereby the image that presents a kind of current channel or channel is desired the gradual change type display effect that switching channels or channel image are replaced by part.Wherein, described N can get the natural number greater than 1.
Same, described channel or channel switching instruction trigger output by TV user by the keypad that is provided with on remote controller or the television set, after the identification of the CPU on the television set main decoder plate, handling, generate control signal corresponding and transfer to described video format processing converter, enter the progressive channel switching processing procedure to control it.
Specifically, described video format is handled converter and is read each frame image information of desiring switching channels or channel, if the existing M of former frame image partly has been performed the processing replacement operation, at first handle the preceding M+1 part of described back one two field picture so for a two field picture thereafter, and export video memory to the appropriate section of the present image of its storage is replaced; And then handle follow-up various piece in order one by one and replace in the video memory part corresponding with it in the present image one by one.In the present embodiment, described M gets the natural number smaller or equal to N.
It is to be noted: said here present image is before video memory writes data again, the view data of having preserved.Therefore, the present image here is constantly to change.Specifically, when television set is normally watched, change frame by frame, and be that a part part changes in channel switching or channel handoff procedure.
In the present embodiment, described video format is handled converter and is read appropriate section in described desire switching channels or this moment two field picture of channel according to predefined channel switch speed or according to the inbound pacing of the two field picture of desiring switching channels or channel, and export video memory after handling to, and then replace out part corresponding with it in the present image of described image memory stores.
Illustrate: described video format is handled converter and is being received that channel that TV user sends switches or during channel switching instruction, at first receive from first frame image information of desiring switching channels or channel, first two field picture is divided into the N part, such as N=100, read the also picture signal of digitized processing part 1 then, and then export video memory to, with the data of counterpart with it in current channel two field picture of replacing its original storage.Because image-display units is still by reads image data in the video memory and show, so, the image that shows in display device becomes: what show in the pairing position of part 1 is the image of desiring switching channels or channel, and is images of current channel in all the other position display.Then, video format handles that converter reads and the picture signal of digitized processing part 2, and then exports video memory to, with the data of counterpart with it in current channel two field picture of replacing its original storage.So, the image that shows by display device output becomes: the 1st, the pairing position of part 2 shows is the image of desiring switching channels or channel, what then show in the remaining pairing position of N-2 part is the image of current channel.And the like, just produce a kind of current channel or channel image and desired the display effect that the image of switching channels or channel is replaced by part.
It is pointed out that described video format handle converter need according to predefined channel switch speed or according to the inbound pacing of the two field picture of desiring switching channels or channel read and the described desire switching channels of digitized processing or this moment two field picture of channel in appropriate section.Described channel switch speed should be less than the inbound pacing of two field picture.Such as: the inbound pacing of two field picture is 100 milliseconds, be per 100 milliseconds and receive a frame image information, the setting contents of channel conversion speed is 10 milliseconds, so, described video format is handled the per 10 milliseconds of picture signals that read an appropriate section in the current frame image of converter, carries out exporting video memory to after the digitized processing.When receiving the next frame image, if current frame image is treated and replaced M part wherein, so, for the next frame image, at first choose the preceding M+1 part of described next frame image, carry out digitized processing after, export video memory to, replace the image of current channel gradually.
Such as for receive from first frame image information of desiring switching channels or channel, at first 10 milliseconds, read and the picture signal of its part 1 of digitized processing, and then export video memory to the data of counterpart with it in current channel two field picture of replacing its original storage.At second 10 milliseconds, read the also picture signal of its part 2 of digitized processing, and then export video memory to corresponding partial data with part 2 in current channel two field picture of replacing its original storage.The rest may be inferred, during to the tenth 10 milliseconds, read and the picture signal of its 10th part of digitized processing, and then export to video memory with in current channel two field picture of replacing its original storage with the corresponding partial data of the 10th part.The image that shows thus is the progressive formation of replacing by part.Carve at this moment, described video format is handled converter and is received from second frame image information of desiring switching channels or channel, in the time of first 10 milliseconds, at first read and the picture signal of preceding 11 parts of this two field picture of digitized processing, so export to video memory with in the view data of replacing its original storage with the corresponding partial data of preceding 11 parts.Then, in 10 milliseconds of processes of afterwards each, choose the 12nd part, the 13rd part of second two field picture one by one ... the picture signal of the 20th part, after carrying out digitized processing respectively, export video memory to and replace in view data of its original storage the data of counterpart with it one by one.The image that shows thus is the content of at first quickly having replaced preceding 11 parts, and then is the fade effect of replacing by part.The rest may be inferred, till a certain frame image data of desiring switching channels or channel has been replaced the view data of original storage in the video memory fully.After this, described video format is handled converter and is read the view data of desiring switching channels or channel frame by frame, carry out digitized processing after, export described video memory frame by frame to.So, image-display units just can normally show channel after the switching or each frame image information of channel, finishes the complete machine task switching.
Certainly, also can read according to the inbound pacing of the two field picture of desiring switching channels or channel and the described desire switching channels of digitized processing or this moment two field picture of channel in appropriate section.Such as: handle converter when video format and receive when desiring first frame image information of switching channels or channel, at first read the picture signal of part 1, after carrying out digitized processing, export video memory to the data of counterpart with it in current channel two field picture of replacing its original storage.Then, read from second frame image information of desiring switching channels or channel, choose and digitized processing its 1st and the picture signal of part 2, and then export to video memory with in the view data of replacing its original storage with the 1st, the corresponding partial data of part 2.The rest may be inferred, till a certain frame image data of desiring switching channels or channel has been replaced the view data of original storage in the video memory fully.So, the image that shows by image-display units is and replaces more part of progressive formation in current channel or the channel image frame by frame.
In the present embodiment, preferably adopt line by line or pursue the form realization of row for the method for dividing from the two field picture of desiring switching channels or channel, promptly in channel or channel handoff procedure, replace the image of current channel or channel line by line or by row, change the display effect of platform to realize a kind of curtain-type.Certainly, described curtain-type change the platform effect can adopt from top to bottom, from top to bottom, from the centre to both sides, wait various ways from left to right or from right to left, present embodiment is not limited thereto.
In order to realize the progressive channel switching function of television set, CPU plays the central controlled effect of each several part functional module as the core component in the whole hardware cell, and its working procedure is stored in the FLASH memory of television set inside.After the television boot-strap operation, CPU calls and carries out this working procedure, enters normal operating conditions with the control complete machine.In described working procedure, include the custom menu display routine, in the present embodiment, change the selection control switch of platform mode by in custom menu, being provided with, can change the platform mode, can carry out tradition and change the platform mode or carry out gradual change type and change platform mode or the like according to the customer requirements adjustment.
Certainly, described CPU and video format are handled converter can specifically adopt two independently process chip realizations, the high integration decoding chip that can also adopt a present television set manufacturing industry generally to select for use realizes that present embodiment does not specifically limit this.
Briefly introduce the software program flow process of progressive channel switching implementation method below.This program module is embedded in the software systems of complete machine, when selecting the progressive channel switching option in TV user " switching mode " options in custom menu, the control command that real-time supervisory user is sent, and when receiving channel or channel switching instruction, call this program module.
The mode that the present embodiment employing is replaced current channel or channel image line by line with the predefined channel switch time is an example, elaborates the concrete steps that described progressive channel switching implementation method is comprised, referring to shown in Figure 2:
S201, module activate beginning;
S202, program initialization, defined variable n=0, m=0;
S203, judge whether to receive from the data of desiring switching channels or channel, if then continue to carry out subsequent step; Otherwise, redirect execution in step S208;
Here, described data from desire switching channels or channel refer to new frame image data; Can be if do not have in channel that desire is switched or the channel for the picture signal that shows, such as this channel no signal, then according to the inbound pacing of conventional two field picture, when arriving the time of reception of two field picture, the background image of setting with television set is represented the two field picture that receives to continue to carry out subsequent step;
S204、m＝n+1；
The capable view data of m is carried out digitized processing before S205, the selection;
S206, export the data after the digitized processing to video memory, replace in the present image before the pairing data of the capable image of m;
S207、n＝m；
S208, judge whether to arrive the channel switch time; If then carry out subsequent step; Otherwise, redirect execution in step S212;
S209、n＝n+1；
S210, the capable view data of selection n are carried out digitized processing;
S211, export the data after the digitized processing to video memory, replace the pairing data of the capable image of n in the present image;
S212, judge whether n equals total line number of a two field picture, whether the image of promptly judging current channel or channel has been desired the image of switching channels or channel is replaced fully; If then carry out subsequent step; Otherwise, return step S203;
S213, module finish.
The present invention adopts video format processing converter that image is carried out digital conversion, and stores in video memory, carries out gradual change type by software control during channel or channel switch and switches demonstration, to improve the interest that channel or channel switch.This progressive channel switching implementation method is equally applicable in the present set-top box product.
Certainly; the above only is a kind of preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. progressive channel switching method, it is characterized in that: in channel switching or channel handoff procedure, the image that at first shows current channel or current channel, read the image information of desiring switching channels or channel then, and the image that will desire switching channels or channel is divided into N part and processing one by one in order, and then replace part corresponding with it in the present image one by one, till the image of desiring switching channels or channel is replaced present image fully; Wherein, N is the natural number greater than 1.
2. progressive channel switching method according to claim 1, it is characterized in that: in the process that present image is replaced one by one, read each frame image information of desiring switching channels or channel, if the existing M of former frame image partly has been performed the processing replacement operation, at first handle the preceding M+1 part of described back one two field picture so for a two field picture thereafter, and the appropriate section of present image is replaced; And then handle follow-up various piece in order one by one and replace part corresponding with it in the present image one by one; Wherein, described M is the natural number smaller or equal to N.
3. progressive channel switching method according to claim 2 is characterized in that: the described replacement process of handling one by one carries out according to predefined channel switch speed.
4. progressive channel switching method according to claim 2 is characterized in that: the described replacement process of handling one by one carries out according to the inbound pacing of the two field picture of desiring switching channels or channel.
5. according to each described progressive channel switching method in the claim 1 to 4, it is characterized in that: after the image of the described desire switching channels that reads or channel is carried out line by line or gets, handles by column selection, replace present image line by line or by row.
6. television set comprises:
The video reception unit receives the image information of current channel or channel, and when receiving channel switching or channel switching instruction, transfer to receive the image information from desiring switching channels or channel, and the generation data image signal is exported;
Video format is handled converter, in channel switching or channel handoff procedure, receive the data image signal of described video reception unit output, and two field picture is divided into N part, after choosing processing one by one in order, export video memory to, and then replace out part corresponding with it in the present image of described image memory stores one by one, till a certain two field picture of desiring switching channels or channel is replaced present image fully;
Image-display units reads each frame image information in the described video memory, and shows;
Wherein, described N is the natural number greater than 1.
7. television set according to claim 8, it is characterized in that: in the process that present image is replaced one by one, described video format is handled converter and is read each frame image information of desiring switching channels or channel, if the existing M of former frame image partly has been performed the processing replacement operation, at first handle the preceding M+1 part of described back one two field picture so for a two field picture thereafter, and export video memory to the appropriate section of the present image of its storage is replaced; And then handle follow-up various piece in order one by one and replace in the video memory part corresponding with it in the present image one by one; Wherein, described M is the natural number smaller or equal to N.
8. television set according to claim 8, it is characterized in that: described video format is handled converter and is read the appropriate section of desiring in switching channels or this moment two field picture of channel according to predefined channel switch speed or according to the inbound pacing of the two field picture of desiring switching channels or channel, and export video memory after handling to, and then replace out part corresponding with it in the present image of described image memory stores.
9. television set according to claim 8 is characterized in that: be provided with the selection control switch that changes the platform mode in the custom menu of described television set, the platform mode is changed in adjustment according to customer requirements.
10. according to each described television set in the claim 6 to 9, it is characterized in that: after described video format is handled that converter carries out line by line the image of the described desire switching channels that reads or channel or got, handles by column selection, line by line or replace out corresponding with it part in the present image of described image memory stores by row.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103493501A (en) * | 2011-08-09 | 2014-01-01 | 华为技术有限公司 | Method and apparatus for realising image display effects when web tv changing channels |
| CN103796075A (en) * | 2014-02-27 | 2014-05-14 | 广州视源电子科技股份有限公司 | Method and device for switching television channels and channels |
| CN108495041A (en) * | 2018-04-18 | 2018-09-04 | 许培培 | A kind of image procossing and display methods, device for electric terminal |
| CN108604252A (en) * | 2016-01-05 | 2018-09-28 | 格雷斯诺特公司 | Computing system with the triggering feature based on channel change |
| CN113411669A (en) * | 2021-06-16 | 2021-09-17 | 浙江大华技术股份有限公司 | Video special effect processing method and device |
| CN113596566A (en) * | 2021-07-08 | 2021-11-02 | 深圳爱特天翔科技有限公司 | Method, device and system for downloading picture by image processing device |
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2009
- 2009-02-04 CN CN200910014071A patent/CN101795366A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103493501A (en) * | 2011-08-09 | 2014-01-01 | 华为技术有限公司 | Method and apparatus for realising image display effects when web tv changing channels |
| CN103796075A (en) * | 2014-02-27 | 2014-05-14 | 广州视源电子科技股份有限公司 | Method and device for switching television channels and channels |
| CN108604252A (en) * | 2016-01-05 | 2018-09-28 | 格雷斯诺特公司 | Computing system with the triggering feature based on channel change |
| US11778285B2 (en) | 2016-01-05 | 2023-10-03 | Roku, Inc. | Computing system with channel-change-based trigger feature |
| CN108495041A (en) * | 2018-04-18 | 2018-09-04 | 许培培 | A kind of image procossing and display methods, device for electric terminal |
| CN108495041B (en) * | 2018-04-18 | 2020-09-29 | 国之云(山东)信息科技有限公司 | Image processing and displaying method and device for electronic terminal |
| CN113411669A (en) * | 2021-06-16 | 2021-09-17 | 浙江大华技术股份有限公司 | Video special effect processing method and device |
| CN113596566A (en) * | 2021-07-08 | 2021-11-02 | 深圳爱特天翔科技有限公司 | Method, device and system for downloading picture by image processing device |
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