CN101072293A - Device and method for automatically regulating television screen display - Google Patents
Device and method for automatically regulating television screen display Download PDFInfo
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Abstract
The device includes MCU, tuner, E2PROM, remote control receiving part, video and audio process, output part for video and audio, and distance measurement set. The method includes following steps: starting up range unit, measuring distance, contrasting data of distance, determining, and adjusting screen display. Based on distance for watching TV by audience, the invention can adjust size of TV display screen automatically. Features are: easy of operation, humanized TV set, and protecting eyesight of audience.
Description
[technical field]
The present invention relates to the image processing techniques of TV, especially can adjust the device and method of picture display size automatically according to user watched distance.
[background technology]
At present, the realization of HDTV (High-Definition Television), digital home, these dreams of multimedia hub will be depended on the development of Display Technique to a great extent, and these application are more clear except requiring, the display frame of more beautiful, also need picture dimension enough big.Therefore the maximization of display size also becomes the important development direction in demonstration field.Large screen television such as specifications such as 42 cun, 60 cun, 65 cun has appearred in the market, yet, the display device of these large-screens need use than the support of large space usually, if the space of being placed is spacious inadequately, visual effect is just undesirable, even hazy sensations is arranged, so long-term use will inevitably cause eyesight to descend.
Problem at viewing distance, at present more existing patent documentations disclose relevant technical scheme,, application number open as on April 10th, 1996 is that it passes through to install a distance alarm control circuit in television set for " television close distance alarm control circuit " for CN94103807.6, patent name, cross when near when spectators' viewing distance and just to report to the police automatically, control volume and interfering picture reach the purpose that allows spectators teleview thus in suitable scope.For another example, announce September 22 calendar year 2001, application number is that CN00134602.4, patent name are the patent of " with the method and apparatus of television set maintenance viewing distance ", by form by transducer, interface circuit apart from monitoring device, and be connected with the input/outlet of television set CPU, when the distance between spectators and television set during less than setting range, the captions prompting will appear on the screen of TV.Yet above-mentioned patent only is to send a warning signal to spectators, also needs spectators initiatively to carry out as for the adjusting of viewing distance.In the practical application, the user is the spacing between active adjustment oneself and the screen because distance is too short seldom.
Therefore be necessary to provide a kind of device and method that can regulate screen display according to distance between user and the screen automatically, to adapt to user's needs, for the user provides a kind of good visual effect and watches guarantee reliably.
[summary of the invention]
The object of the present invention is to provide a kind of device and method of automatic adjusting television screen display size; this device and method can be regulated the television screen display size automatically according to spectators' viewing distance; easy and simple to handle; allow television equipment develop on the one hand towards the direction of hommization more; allow the rating mode more scientific and reasonable on the other hand, thereby can reach the purpose of protection spectators eyesight.
Based on this, the present invention is achieved in that
The device that a kind of automatic adjusting screen shows comprises: MCU, tuner, E
2The output of PROM, remote control receiving unit, video and Audio Processing, Voice ﹠ Video, it is characterized in that this device also comprises distance-measuring device, wherein, range unit is used to obtain the viewing distance between TV and the user, send system MCU to, and by the work of MCU according to this viewing distance control of video processing and video output.
MCU is the commander in chief of system, the action of the device that other functional module of its control system links to each other with IO pin or the system bus of MCU; Image processing module is the concrete implementer to image processing, and it includes OSD control display module, ADC analog to digital converter, Video Decoder, input timing signal generator, motion compensation detecting module, image zoom Scaler module; Range unit is used to obtain the distance between TV and the user, and sends system MCU to.
Described range unit, it is infrared transmitter and receiver, can also be infrared, ultrasonic wave or other electron ray remote sensing range unit of other form.
Form the infrared remote sensing measuring system for infrared transmitter and infrared receiver, this infrared remote sensing measuring system comprises television screen, infrared transmitter, infrared receiver and remote controller, wherein, television screen and remote controller are as the target of infrared transmitter, receiver detection distance, and infrared transmitter herein is made up of light-emitting diode; Infrared receiver is meant the device that can launch a signal of telecommunication when receiving the enough big infrared radiation of intensity.Usually, these infrared receivers are made up of phototransistor or photodiode.
The front end of above-mentioned remote controller can be designed to arc groove shape, is convenient to received signal better.
A kind of method of automatic adjusting television screen display is characterized in that this method may further comprise the steps:
A, startup range unit start range unit by triggering button or remote controller signal;
B, measuring distance are by the distance between induced signal measurement remote controller and the television set;
C, range data contrast, range data sends MCU to, and MCU carries out distance versus;
Whether d, MCU judging distance are then to withdraw from processing greater than maximum distance, target screen are shown be made as demonstration all over the screen; , be then to withdraw from processing perhaps, target screen shown be transferred to minimum dimension less than minimum distance; Distance then need be calculated the conspicuous scale value of screen of adjustment if between maximum distance and minimum distance, and this desired value can be determined by following formula:
Size＝(Distance*39.37)/Y，
Wherein, Size is the conspicuous dimensioning of screen that will obtain; Distance is the distance value of measuring; 39.37 be the inch with meter the conversion relation constant; Y is a distance adjustment coefficient that adapts to human eye health;
E, regulating screen and show, show size according to above-mentioned target screen, is the center with the central point of screen, is the catercorner length that screen shows with Size, by adjusting zoom factor, adjusting the original position of picture, treated image size is shown on the screen.
The method of described a kind of automatic adjusting television screen display, its concrete performing step is:
(1) shows adjusting command by common infrared remote control mode to the automatic screen that the TV system sends by user remote controller;
(2) after the MCU of TV system receives that automatic screen that remote controller sends shows adjusting command, start the infrared remote sensing measuring system;
(3) the infrared remote sensing measuring system sends signal by infrared transmitter, and signal produces reflection after running into barrier, has part signal to be returned to infrared receiver again, and the infrared induction system calculates the distance between TV screen and the remote controller thus;
(4) the infrared ray Range Measurement System sends the range data that gets access to the MCU of TV system;
(5) MCU of TV enters following (6) step process after the range data of having obtained screen and user;
(6) if the distance that should measure greater than after the maximum distance, if current broadcast screen shows for all over the screen, then system withdraws from this section processes, otherwise, target screen shown be made as demonstration all over the screen;
(7) if the distance that should measure less than after the minimum distance, has been a minimum dimension if current broadcast screen shows, then tip distance is near excessively; If it also is not minimum dimension that current broadcast screen shows, then target screen is shown and be transferred to minimum dimension;
(8) if the distance value of this measurement between maximum distance and minimum distance, then need calculate the conspicuous scale value of screen of adjustment;
(9) according to the apparent size of above-mentioned target screen, system will be a central point with the central point of screen, be the catercorner length that screen shows with Size, by adjusting the inter-process flow processs such as original position of zoom factor, adjustment picture, treated image will be shown on the screen.
So far, screen shows automatic adjustment of size and is all over, and the user has also obtained the television screen display size of useful relatively human eye health.
The method of described automatic adjusting television screen display, this method be to launch a signal by remote controller to give television set, carries out TV and user distance location thus.
The method of described automatic adjusting television screen display can also make range unit regularly start, and the spectators or the barrier in infrared remote sensing device timing scan television set front judge whether to be necessary to adjust automatically its picture display size thus.
The method that disclosed automatic screen is regulated; make the user when watching TV; can regulate television screen automatically and show the size that adapts; adjustment that need not be meaningless; easy and simple to handle; allow television equipment develop on the one hand, allow the rating mode more scientific and reasonable on the other hand, thereby can reach the purpose of protection spectators eyesight towards the direction of hommization more.
In addition, the present invention be on the basis of existing television equipment by increasing Range Measurement System, and improve that existing control method reaches, its implementation is simple, cost performance is high, and uses operation also very convenient for the user.
[description of drawings]
Below in conjunction with accompanying drawing concrete enforcement of the present invention is described in further detail:
Fig. 1 is the related relevant system framework figure of the inventive method;
Fig. 2 is the Video processing schematic diagram of embodiment of the present invention;
Fig. 3 adopts the module map of infrared ray Range Measurement System for the present invention;
Fig. 4 is the flow chart of the inventive method.
[embodiment]
The present invention can be applied to multiple high-end Video processing scheme.Below, based on the Fli8532 of Genesis company Video processing IC, be example with these 60 cun panel TVs, specific embodiments of the present invention is described in detail.
Fig. 1 is the system framework schematic diagram of the inventive method embodiment on simulated television.This system comprises MCU, tuner, E
2The output of PROM, remote control receiving unit, video and Audio Processing, Voice ﹠ Video, and Range Measurement System or the like.MCU is the commander in chief of system, the action of the device that other functional module of its control system links to each other with IO pin or the system bus of MCU.Image processing module is the concrete implementer to image processing, wherein involved in the present invention to the Scaler module of adjustment screen size also be comprised in.Range unit is used to obtain the distance between TV and the user, and sends system MCU to.
Fig. 2 is the block diagram that interior video is handled in this embodiment.We are example with the TV processor Fli8532 of Genesis company, are illustrated supporting the present invention to shield apparent scale adjusting method.As shown in Figure 2, some processing modules of Fli8532 inside comprise: OSD control display module, ADC analog to digital converter, Video Decoder, input timing signal generator, motion compensation detecting module, image zoom Scaler module etc.Wherein, the image zoom module is that treatment circuit is dwindled in a kind of vision signal amplification, is integrated in the integrated circuit usually at present.By Fig. 2, we can be clear that video is being entered by each information source port, through inter-process such as a series of decodings, convergent-divergents, output to the sequential process of display terminal at last.
In the specific embodiment of the present invention, we give television set by user's emission one signal that uses a teleswitch, and carry out TV and user distance location thus.So what this moment, in fact Range Measurement System obtained is distance between TV and the remote controller.And concrete distance measurement method also can adopt multiple different form, can be infrared transmitter and receiver all on television set, with remote controller as reverberation; Can be infrared transmitter and receiver all on remote controller, with video screen as reverberation; Can also be infrared, the ultrasonic wave of other form or other electron ray remote sensing range finding or the like.
Fig. 3 is the simple schematic diagram of infrared ray Range Measurement System.In the embodiments of the present invention, we take to be provided with on television set infrared transmitter and infrared receiver composition infrared remote sensing measuring system is carried out range measurement.This infrared remote sensing measuring system comprises television screen 1, infrared transmitter 2, infrared receiver 3 and user remote controller 4.Wherein, infrared transmitter 2 herein is made up of light-emitting diode; Infrared receiver 3 is meant the device that can launch a signal of telecommunication when receiving the enough big infrared radiation of intensity.Usually, these infrared receivers are made up of phototransistor or photodiode, and its operation principle converts infrared ray to voltage exactly.In fact, the infrared rays survey technology is comparative maturity, has been public's technology, repeats no more once more.In addition, for can be better to the receiving system reflected signal, the front end of user remote controller 4 can be designed to arc groove shape.
Fig. 4 is the flow chart that television system of the present invention is carried out screen adjustment automatically.
(1) shows adjusting command by common infrared remote control mode to the automatic screen that the TV system sends by user remote controller.
(2) after the MCU of TV system receives that automatic screen that remote controller sends shows adjusting command, start the infrared remote sensing measuring system.
(3) the infrared remote sensing measuring system sends signal by infrared transmitter, signal produces reflection after running into barrier, have part signal to be returned to infrared receiver again, the infrared induction system calculates the distance between TV screen and the remote controller (being the user) thus.
(4) the infrared ray Range Measurement System sends the range data that gets access to the MCU of TV system.
(5) MCU of TV enters following (6) step process after the range data of having obtained screen and user.
(6) if the distance that should measure greater than maximum distance (as 3.9 meters) afterwards, is (60 cun) all over the screen if current broadcast screen shows, then system withdraws from this section processes, otherwise, target screen shown be made as demonstration all over the screen.
(7) if the distance that should measure less than minimum distance (as 1.3 meters) afterwards, has been minimum dimension (as 20 cun) if current broadcast screen shows, then tip distance is near excessively; If it also is not minimum dimension that current broadcast screen shows, then target screen is shown and be transferred to minimum dimension (as 20 cun).
(8) if the distance value of this measurement between maximum distance and minimum distance, then need calculate the conspicuous scale value of screen of adjustment.For obtaining this value, we determine by following formula: Size=(Distance*39.37)/Y, and wherein, Size is the conspicuous dimensioning of screen that will obtain; Distance is the distance value of measuring; 39.37 be the inch with meter the conversion relation constant; Y is a distance adjustment coefficient that adapts to human eye health, is set at 2.6 herein, and in use, it is selected that this adjustment factor can be looked concrete condition by the engineer of this area.
(9) show size according to above-mentioned target screen, system will be a central point with the central point of screen, with Size is the catercorner length that screen shows, and by the zoom factor of adjusting Scaler, the inter-process flow processs such as original position of adjusting picture, treated image is shown on the screen.
(10) so far, screen shows automatic adjustment of size and is all over, and the user has also obtained the television screen display size of useful relatively human eye health.
In the above-mentioned embodiment, announcement be a kind ofly initiatively to send order by remote controller by the user, carry out user watched range measurement to activate the TV system, screen shows operations such as adjusting.In fact, utilize the present invention can also realize TV the system spectators or the barrier in device timing scan television set front through infrared remote sensing, judge whether to be necessary to adjust automatically its picture display size thus.
Claims (9)
1, the apparent device of a kind of automatic adjusting screen comprises: MCU, tuner, E
2The output of PROM, remote control receiving unit, video and Audio Processing, Voice ﹠ Video, it is characterized in that this device also comprises distance-measuring device, wherein, range unit is used to obtain the viewing distance between TV and the user, send system MCU to, and by the work of MCU according to this viewing distance control of video processing and video output.
2, the device that shows of automatic adjusting screen as claimed in claim 1 is characterized in that range unit, and it is infrared transmitter and receiver, can also be infrared, ultrasonic wave or other electron ray remote sensing range unit of other form.
3, the apparent device of automatic adjusting screen as claimed in claim 2, it is characterized in that forming the infrared remote sensing measuring system for infrared transmitter and infrared receiver, this infrared remote sensing measuring system comprises television screen, infrared transmitter, infrared receiver and remote controller, wherein, television screen and remote controller are as the target of infrared transmitter, receiver detection distance, and infrared transmitter herein is made up of light-emitting diode; Infrared receiver is meant the device that can launch a signal of telecommunication when receiving the enough big infrared radiation of intensity.
4, the device that shows of automatic adjusting screen as claimed in claim 3 is characterized in that infrared receiver is made up of phototransistor or photodiode,
5, the apparent device of automatic adjusting screen as claimed in claim 3 is characterized in that the front end of above-mentioned remote controller can be designed to arc groove shape.
6, a kind of method of automatic adjusting television screen display is characterized in that this method may further comprise the steps:
A, startup range unit start range unit by triggering button or remote controller signal;
B, measuring distance are by the distance between induced signal measurement remote controller and the television set;
C, range data contrast, range data sends MCU to, and MCU carries out distance versus;
Whether d, MCU judging distance are then to withdraw from processing greater than maximum distance, target screen are shown be made as demonstration all over the screen; , be then to withdraw from processing perhaps, target screen shown be transferred to minimum dimension less than minimum distance; Distance then need be calculated the conspicuous scale value of screen of adjustment if between maximum distance and minimum distance, and this desired value can be determined by following formula:
Size＝(Distance*39.37)/Y，
Wherein, Size is the conspicuous dimensioning of screen that will obtain; Distance is the distance value of measuring; 39.37 be the inch with meter the conversion relation constant; Y is a distance adjustment coefficient that adapts to human eye health;
E, regulating screen and show, show size according to above-mentioned target screen, is the center with the central point of screen, is the catercorner length that screen shows with Size, by adjusting zoom factor, adjusting the original position of picture, treated image size is shown on the screen.
7, the method for automatic adjusting television screen display as claimed in claim 6 is characterized in that concrete performing step is:
(1) shows adjusting command by common infrared remote control mode to the automatic screen that the TV system sends by user remote controller;
(2) after the MCU of TV system receives that automatic screen that remote controller sends shows adjusting command, start the infrared remote sensing measuring system;
(3) the infrared remote sensing measuring system sends signal by infrared transmitter, and signal produces reflection after running into barrier, has part signal to be returned to infrared receiver again, and the infrared induction system calculates the distance between TV screen and the remote controller thus;
(4) the infrared ray Range Measurement System sends the range data that gets access to the MCU of TV system;
(5) MCU of TV enters following (6) step process after the range data of having obtained screen and user;
(6) if the distance that should measure greater than after the maximum distance, if current broadcast screen shows for all over the screen, then system withdraws from this section processes, otherwise, target screen shown be made as demonstration all over the screen;
(7) if the distance that should measure less than after the minimum distance, has been a minimum dimension if current broadcast screen shows, then tip distance is near excessively; If it also is not minimum dimension that current broadcast screen shows, then target screen is shown and be transferred to minimum dimension;
(8) if the distance value of this measurement between maximum distance and minimum distance, then need calculate the conspicuous scale value of screen of adjustment;
(9) according to the apparent size of above-mentioned target screen, system will be a central point with the central point of screen, be the catercorner length that screen shows with Size, by adjusting the inter-process flow processs such as original position of zoom factor, adjustment picture, treated image will be shown on the screen.
8, the method for automatic adjusting television screen display as claimed in claim 6 is characterized in that this method is to launch a signal by remote controller to give television set, carries out TV and user distance location thus.
9, the method for automatic adjusting television screen display as claimed in claim 6, it is characterized in that to make range unit regularly to start, the spectators or the barrier in infrared remote sensing device timing scan television set front judge whether to be necessary to adjust automatically its picture display size thus.
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