CN101847316A - Infrared remote control system and remote control method for network television - Google Patents
Infrared remote control system and remote control method for network television Download PDFInfo
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Abstract
The invention discloses an infrared remote control system for a network television, which comprises an infrared receiving system and a remote controller. The infrared receiving system is arranged in the television; the remote controller is matched with the infrared receiving system; the infrared receiving system comprises a central processing unit, a remote controller position detection unit and a remote controller key detection unit; and the remote controller position detection unit and the remote controller key detection unit are electrically connected to the central processing unit. The invention also discloses a remote control method of the infrared remote control system for the network television. Once a user slightly shakes the remote controller towards a television screen, the remote control system can sense the space coordinate position of the remote controller and control a mouse pointer on the television screen to move correspondingly; and the mouse pointer is moved and positioned rapidly like a computer mouse so as to meet the requirements of man-machine interaction and remote control operation on the programs and games in the network television.
Description
Technical field
The present invention relates to a kind of digital audio-video product, especially relate to a kind of infrared remote control system, the invention still further relates to the remote control thereof of the infrared remote control system that utilizes this Web TV with Web TV of remote controller position measuring ability.
Background technology
Along with the development of Web TV, TV is the fixing playback terminal of TV programme just, but differentiation becomes comprehensive family multi-media recreation center and information center.In the Web TV epoch, the consumer not only can see traditional tv program in the past, also can utilize Web TV to obtain abundant program resource from the internet, and enjoy abundant network application such as information service, interactive game, electronic business transaction, video communication, long-distance education.
Because the function of Web TV is abundanter, tends to diversification more, the user interface of Web TV becomes multiwindow, hypertext, browser user interface from traditional menu interface, makes it more tend to a multimedia computer.But present Web TV still uses common button Infrared remote controller to operate, the user will be by repeatedly pressing the upper and lower, left and right operating key, progressively mouse pointer is moved to presumptive area, press acknowledgement key at last again and carry out function selecting, operation exception is loaded down with trivial details, can't carry out the fast moving location as the mouse that uses a computer, be difficult to adapt to interactivity very strong Web TV interactive application and service.
Summary of the invention
At above problem, the objective of the invention is to overcome the deficiency of existing network TV remote technical operation complexity, a kind of infrared remote control system with Web TV of remote controller position measuring ability is provided, the invention still further relates to the remote control thereof of the infrared remote control system that utilizes this Web TV.
The present invention realizes by following technical measures, a kind of infrared remote control system that is used for Web TV, comprise the infrared receiving system that is installed in the televisor and with the supporting telepilot of infrared receiving system, described infrared receiving system comprises CPU (central processing unit), is connected electrically in remote controller position detecting unit and remote controller key detecting unit on the CPU (central processing unit); Wherein,
Telepilot: also be provided with mouse button on the telecontrol panel, this mouse button is electrically connected with the pulsed infrared light luminescent device of fixed frequency, after pressing mouse button, the infrared light-emitting device that is electrically connected with it can send the pulsed infrared light of fixed frequency, detects tracking as positioned light source for the remote controller position detecting unit;
Remote controller key detecting unit: be used to detect the key-press status of telepilot, and corresponding keypress function signal is exported to CPU (central processing unit);
Remote controller position detecting unit: be used to detect the pulsed infrared light of following the tracks of the fixed frequency that telepilot sends, send X, the Y coordinate data of telepilot vertical direction to CPU (central processing unit), and detect the change in location of telepilot at vertical direction;
CPU (central processing unit): location status and the key-press status of accepting the next real-time vertical direction of telepilot of remote controller position detecting unit and remote controller key detecting unit transmission, the vertical direction location status real-time according to telepilot generates mouse pointer on television screen, and according to the change in displacement of telepilot rolling mouse pointer correspondingly, and send X, Y coordinate data and the key-press status of telepilot vertical direction to corresponding application software, thereby finish remote control process.
Above-mentioned infrared receiving system also can be arranged on the set-top box, player or the special-purpose remote control that are connected with televisor and receive in the host box.
Remote controller position detecting unit wherein comprises: vertically the measurement object lens that are provided with, measuring object lens rear array image sensor parallel and the image processing circuit that is electrically connected with array image sensor with the measurement object lens.
A kind of optimal way: array image sensor adopts cmos image sensor, and image processing circuit is made up of ARM7 microprocessor, CPLD CPLD and RAM.
The invention also discloses a kind of remote control thereof that is used for the infrared remote control system of Web TV, its job step is:
(1), during the mouse button on pressing telepilot, infrarede emitting diode on the telepilot at first sends remote signal notice CPU (central processing unit) and enters the mouse performance state, infrarede emitting diode sends the pulsed infrared light of fixed frequency then, carries out Position Tracking as pointolite for the remote controller position detecting unit;
(2), the remote controller position detecting unit can detect fixed frequency pulse infrared light that the infrarede emitting diode of telepilot sends in X, the Y coordinate data of vertical direction and send CPU (central processing unit) to;
(3), CPU (central processing unit) with previous step rapid in detected infrarede emitting diode change into the mouse pointer of corresponding X, Y coordinate on television screen in X, the Y coordinate data of vertical direction, when the infrarede emitting diode of telepilot when vertical X or Y direction move, the mouse pointer sign on television screen also carries out moving of equidirectional and corresponding proportion distance;
(4), when at the mouse performance state, when pressing the command key of the correspondence on the telepilot, infrarede emitting diode becomes the remote control coding pulse with the key bit code of corresponding button through inner telecommand coder transitions, coded pulse is carried out pulse amplitude modulation to carrier wave, and launches modulated coded pulse from infrarede emitting diode;
(5), the remote controller key detecting unit receives the modulated coded pulse that infrarede emitting diode is launched, after decoding, give CPU (central processing unit) with corresponding keypress function signal conveys, CPU (central processing unit) sends X, Y coordinate data and the keypress function signal of telepilot to corresponding application software, when X, Y coordinate data and the keypress function signal of telepilot corresponding with lawful order program in the application software, then application software initiated lawful order program;
When pressing the mouse button on the telepilot (6), once more, telepilot sends mouse dormancy instruction to CPU (central processing unit), and CPU (central processing unit) screen-concealing mouse pointer, telepilot enter normal remote control button Control work state.
The testing process of remote controller position detecting unit is in above-mentioned steps (2): the fixed frequency pulse infrared light that infrarede emitting diode sends forms a hot spot through measuring on the target surface of object lens at array image sensor, hot spot is corresponding in the X of vertical direction, position in the Y plane at the position on the target surface and telepilot, when telepilot moves up and down, hot spot is made corresponding mobile on target surface, array image sensor is given image processing circuit with this Digital Image Transmission; Image processing circuit at first will carry out noise filtering to image, image processing circuit carries out threshold process to the digital picture through noise filtering, obtain comprising the binary image of light spot shape and positional information, calculate the centroid position of hot spot at last, just can obtain X, the Y coordinate data of telepilot vertical direction.
A kind of optimal way, noise filtering adopts median filtering method, this median filtering method adopts a moving window that contains odd number point, the value of the window center point Mesophyticum with each point in the window is replaced, make pixel with the surrounding pixel value approaching pixel replacement bigger, thereby eliminate isolated noise spot with the difference of surrounding pixel gray-scale value.
The user only needs hand-held remote controller to face toward television screen to swing gently, telechirics is the volume coordinate position of energy perception telepilot just, and the mouse pointer on the control TV screen carries out corresponding mobile, carry out the fast moving location as the mouse that uses a computer, thereby satisfy the man-machine interaction and the straighforward operation demand of network TV program and recreation.
The present invention's advantage compared with prior art:
(1) infrared remote control system of the present invention has increased the remote controller position detecting unit, therefore can not only provide the remote controller key control signal, and can also obtain the remote controller position coordinate information.The user only needs telepilot is swung facing to the television screen upper and lower, left and right, just can carry out the fast moving location as the mouse that uses a computer, and can carry out the straighforward operation of network interactive television program, also can carry out the very strong game operation of interactivity.
(2) Infrared remote controller hardware configuration of the present invention and existing Infrared remote controller are identical, and a spare key that just has now on the Infrared remote controller is set to " mouse " key, does not increase the technology difficulty and the processing cost of telepilot.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structured flowchart of the infrared receiving system of the embodiment of the invention 1;
Fig. 3 is the structural representation of the embodiment of the invention 2;
Fig. 4 is the structured flowchart of the infrared receiving system of the embodiment of the invention 2.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention is described in further detail.
As shown in Figure 1 and Figure 2, a kind of infrared remote control system that is used for Web TV, comprise the infrared receiving system that is installed in the televisor 1 and with the supporting telepilot 7 of infrared receiving system, described infrared receiving system comprises televisor CPU (central processing unit) 101, is connected electrically in remote controller position detecting unit 4 and remote controller key detecting unit 3 on the televisor CPU (central processing unit) 101; Wherein,
Telepilot 7: the principle of work of telepilot 7 and existing telepilot are identical, mainly are made up of keyboard matrix, telepilot special IC, driver and infrarede emitting diode 5 etc.During any button on pressing telepilot 7, the telepilot special IC becomes the remote control coding pulse with the key bit code of button through inner telecommand coder transitions, coded pulse is carried out pulse amplitude modulation to the carrier wave of 38MHz, modulated coded pulse excitation infrarede emitting diode 5, making it is that the infrared light of 940nm sends infrared remote-controlled signal with centre wavelength; Also be provided with mouse button 6 on telepilot 7 panels, this mouse button 6 is electrically connected with the pulsed infrared light luminescent device 5 of fixed frequency, after pressing mouse button 6, the infrared light-emitting device 5 that is electrically connected with it can send the pulsed infrared light of fixed frequency, detects tracking as positioned light source for remote controller position detecting unit 4;
Remote controller key detecting unit 3: be used to detect the key-press status of telepilot 7, and corresponding keypress function signal is exported to televisor CPU (central processing unit) 101;
Remote controller position detecting unit 4: comprise vertical setting measurement object lens 403, measuring parallel cmos image sensor 402 of object lens 403 rears and measurement object lens 403 and the image processing circuit 401 that is electrically connected with cmos image sensor 402; Be used to detect the pulsed infrared light of following the tracks of the fixed frequency that telepilot 7 sends, send X, the Y coordinate data of telepilot 7 vertical directions to televisor CPU (central processing unit) 101, and detect the change in location of telepilot 7 at vertical direction; Image processing circuit 401 is made up of ARM7 microprocessor, CPLD CPLD and RAM;
Televisor CPU (central processing unit) 101: location status and the key-press status of accepting the next telepilot 7 real-time vertical directions of remote controller position detecting unit 4 and 3 transmission of remote controller key detecting unit, on televisor 1 screen, generate mouse pointer 2 according to telepilot 7 real-time vertical direction location statuss, and according to the change in displacement of telepilot 7 rolling mouse pointer 2 correspondingly, and send X, Y coordinate data and the key-press status of telepilot 7 vertical directions to corresponding application software, thereby finish remote control process.
Use the remote control thereof of the infrared remote control system of Web TV, its job step is:
(1), during the mouse button 6 on pressing telepilot 7, infrarede emitting diode 5 on the telepilot 7 at first sends remote signal and enters the mouse performance state by remote controller key detecting unit 3 notice televisor CPU (central processing unit) 101, infrarede emitting diode 5 sends the pulsed infrared light of fixed frequency then, carries out Position Tracking as pointolite for remote controller position detecting unit 4;
(2), the fixed frequency pulse infrared light that sends of infrarede emitting diode 5 forms a hot spot through measuring object lens 403 on the target surface of cmos image sensor 402, hot spot is corresponding in the X of vertical direction, position in the Y plane at the position on the target surface and telepilot 7, when telepilot 7 moves up and down, hot spot is made corresponding mobile on target surface, cmos image sensor 402 is given image processing circuit 401 with this Digital Image Transmission; Image processing circuit 401 at first will carry out noise filtering to image, 401 pairs of digital pictures through noise filtering of image processing circuit are carried out threshold process, obtain comprising the binary image of light spot shape and positional information, calculate the centroid position of hot spot at last, just can obtain X, the Y coordinate data of telepilot 7 vertical directions, and with X, the Y number of coordinates of telepilot 7 vertical directions and send televisor CPU (central processing unit) 101 to;
(3), televisor CPU (central processing unit) 101 with previous step rapid in detected infrarede emitting diode 5 change into the mouse pointer 2 of corresponding X, Y coordinate on televisor 1 screen in X, the Y coordinate data of vertical direction, when the infrarede emitting diode 6 of telepilot 7 when vertical X or Y direction move, the mouse pointer sign 2 on televisor 1 screen also carries out moving of equidirectional and corresponding proportion distance;
(4), when at the mouse performance state, when pressing the OK command key 8 of the correspondence on the telepilot 7, infrarede emitting diode 5 becomes the remote control coding pulse with the key bit code of corresponding OK command key 8 through inner telecommand coder transitions, coded pulse is carried out pulse amplitude modulation to carrier wave, and launches modulated coded pulse from infrarede emitting diode 5;
(5), remote controller key detecting unit 3 receives the modulated coded pulse that infrarede emitting diode 5 is launched, after decoding, give televisor CPU (central processing unit) 101 with corresponding OK command key 8 signal conveys, televisor CPU (central processing unit) 101 sends X, Y coordinate data and OK command key 8 signals of telepilot 7 to corresponding application software, when X, Y coordinate data and OK command key 8 signals of telepilot 7 corresponding with lawful order program in the application software, then application software initiated lawful order program;
When pressing the mouse button 6 on the telepilot 7 (6), once more, 7 pairs of televisor CPU (central processing unit) 101 of telepilot are sent mouse dormancy instruction, and televisor CPU (central processing unit) 101 screen-concealing mouse pointers 2, telepilot 7 enter normal remote control button Control work state.
As Figure 31, shown in Figure 4, a kind of set-top box infrared remote control system that is used for Web TV, comprise the infrared receiving system that is installed in the set-top box that is electrically connected with televisor 19 and with the supporting telepilot 7 of infrared receiving system, described infrared receiving system comprises set-top box CPU (central processing unit) 901, is connected electrically in remote controller position detecting unit 4 and remote controller key detecting unit 3 on the set-top box CPU (central processing unit) 901; Wherein,
Telepilot 7: the principle of work of telepilot 7 and existing telepilot are identical, mainly are made up of keyboard matrix, telepilot special IC, driver and infrarede emitting diode 5 etc.During any button on pressing telepilot 7, the telepilot special IC becomes the remote control coding pulse with the key bit code of button through inner telecommand coder transitions, coded pulse is carried out pulse amplitude modulation to the carrier wave of 38MHz, modulated coded pulse excitation infrarede emitting diode 5, making it is that the infrared light of 940nm sends infrared remote-controlled signal with centre wavelength; Also be provided with mouse button 6 on telepilot 7 panels, this mouse button 6 is electrically connected with the pulsed infrared light luminescent device 5 of fixed frequency, after pressing mouse button 6, the infrared light-emitting device 5 that is electrically connected with it can send the pulsed infrared light of fixed frequency, detects tracking as positioned light source for remote controller position detecting unit 4;
Remote controller key detecting unit 3: be used to detect the key-press status of telepilot 7, and corresponding keypress function signal is exported to set-top box CPU (central processing unit) 901;
Remote controller position detecting unit 4: comprise vertical setting measurement object lens 403, measuring parallel cmos image sensor 402 of object lens 403 rears and measurement object lens 403 and the image processing circuit 401 that is electrically connected with cmos image sensor 402; Be used to detect the pulsed infrared light of following the tracks of the fixed frequency that telepilot 7 sends, send X, the Y coordinate data of telepilot 7 vertical directions to set-top box CPU (central processing unit) 901, and detect the change in location of telepilot 7 at vertical direction; Image processing circuit 401 is made up of ARM7 microprocessor, CPLD CPLD and RAM;
Set-top box CPU (central processing unit) 901: location status and the key-press status of accepting the next telepilot 7 real-time vertical directions of remote controller position detecting unit 4 and 3 transmission of remote controller key detecting unit, on televisor 1 screen, generate mouse pointer 2 according to telepilot 7 real-time vertical direction location statuss, and according to the change in displacement of telepilot 7 rolling mouse pointer 2 correspondingly, and send X, Y coordinate data and the key-press status of telepilot 7 vertical directions to corresponding application software, thereby finish remote control process.
Use the remote control thereof of the set-top box infrared remote control system of Web TV, its job step is:
(1), during the mouse button 6 on pressing telepilot 7, infrarede emitting diode 5 on the telepilot 7 at first sends remote signal and enters the mouse performance state by remote controller key detecting unit 3 announcement machine top box CPU (central processing unit) 901, infrarede emitting diode 5 sends the pulsed infrared light of fixed frequency then, carries out Position Tracking as pointolite for remote controller position detecting unit 4;
(2), the fixed frequency pulse infrared light that sends of infrarede emitting diode 5 forms a hot spot through measuring object lens 403 on the target surface of cmos image sensor 402, hot spot is corresponding in the X of vertical direction, position in the Y plane at the position on the target surface and telepilot 7, when telepilot 7 moves up and down, hot spot is made corresponding mobile on target surface, cmos image sensor 402 is given image processing circuit 401 with this Digital Image Transmission; Image processing circuit 401 at first will carry out the median filtering method noise filtering to image, 401 pairs of digital pictures through the median filtering method noise filtering of image processing circuit are carried out threshold process, obtain comprising the binary image of light spot shape and positional information, calculate the centroid position of hot spot at last, just can obtain X, the Y coordinate data of telepilot 7 vertical directions, and with X, the Y number of coordinates of telepilot 7 vertical directions and send set-top box CPU (central processing unit) 901 to;
(3), set-top box CPU (central processing unit) 901 with previous step rapid in detected infrarede emitting diode 5 change into the mouse pointer 2 of corresponding X, Y coordinate on televisor 1 screen in X, the Y coordinate data of vertical direction, when the infrarede emitting diode 6 of telepilot 7 when vertical X or Y direction move, the mouse pointer sign 2 on televisor 1 screen also carries out moving of equidirectional and corresponding proportion distance;
(4), when at the mouse performance state, when pressing the OK command key 8 of the correspondence on the telepilot 7, infrarede emitting diode 5 becomes the remote control coding pulse with the key bit code of corresponding OK command key 8 through inner telecommand coder transitions, coded pulse is carried out pulse amplitude modulation to carrier wave, and launches modulated coded pulse from infrarede emitting diode 5;
(5), remote controller key detecting unit 3 receives the modulated coded pulse that infrarede emitting diode 5 is launched, after decoding, give set-top box CPU (central processing unit) 901 with corresponding OK command key 8 signal conveys, set-top box CPU (central processing unit) 901 sends X, Y coordinate data and OK command key 8 signals of telepilot 7 to corresponding application software, when X, Y coordinate data and OK command key 8 signals of telepilot 7 corresponding with lawful order program in the application software, then application software initiated lawful order program;
When pressing the mouse button 6 on the telepilot 7 (6), once more, 7 pairs of set-top box CPU (central processing unit) 901 of telepilot are sent mouse dormancy instruction, and set-top box CPU (central processing unit) 901 screen-concealing mouse pointers 2, telepilot 7 enter normal remote control button Control work state.
More than be that the infrared remote control system that the present invention is used for Web TV is set forth; be used for helping to understand the present invention; but embodiments of the present invention are not restricted to the described embodiments; any change that does not deviate under the principle of the invention to be done, modification, substitute, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. infrared remote control system that is used for Web TV, comprise the infrared receiving system that is installed in the televisor and with the supporting telepilot of infrared receiving system, it is characterized in that: infrared receiving system comprises CPU (central processing unit), is connected electrically in remote controller position detecting unit and remote controller key detecting unit on the CPU (central processing unit); Wherein,
Telepilot: telecontrol panel is provided with mouse button, this mouse button is electrically connected with the pulsed infrared light luminescent device of fixed frequency, after pressing mouse button, the infrared light-emitting device that is electrically connected with it can send the pulsed infrared light of fixed frequency, detects tracking as positioned light source for the remote controller position detecting unit;
Remote controller key detecting unit: be used to detect the key-press status of telepilot, and corresponding keypress function signal is exported to CPU (central processing unit);
Remote controller position detecting unit: be used to detect the pulsed infrared light of following the tracks of the fixed frequency that telepilot sends, send X, the Y coordinate data of telepilot vertical direction to CPU (central processing unit), and detect the change in location of telepilot at vertical direction;
CPU (central processing unit): location status and the key-press status of accepting the next real-time vertical direction of telepilot of remote controller position detecting unit and remote controller key detecting unit transmission, the vertical direction location status real-time according to telepilot generates mouse pointer on television screen, and according to the change in displacement of telepilot rolling mouse pointer correspondingly, and send X, Y coordinate data and the key-press status of telepilot vertical direction to corresponding application software, thereby finish remote control process.
2. the infrared remote control system that is used for Web TV according to claim 1 is characterized in that: described infrared receiving system is arranged on the set-top box, player or the special-purpose remote control that are connected with televisor and receives in the host box.
3. the infrared remote control system that is used for Web TV according to claim 1 and 2 is characterized in that: described remote controller position detecting unit comprises: vertically the measurement object lens that are provided with, measuring object lens rear array image sensor parallel and the image processing circuit that is electrically connected with array image sensor with the measurement object lens.
4. the infrared remote control system that is used for Web TV according to claim 3, it is characterized in that: described array image sensor adopts cmos image sensor, and image processing circuit is made up of ARM7 microprocessor, CPLD CPLD and RAM.
5. the remote control thereof that is used for the infrared remote control system of Web TV according to claim 1 and 2 is characterized in that job step is:
(1), during the mouse button on pressing telepilot, infrarede emitting diode on the telepilot at first sends remote signal notice CPU (central processing unit) and enters the mouse performance state, infrarede emitting diode sends the pulsed infrared light of fixed frequency then, carries out Position Tracking as pointolite for the remote controller position detecting unit;
(2), the remote controller position detecting unit can detect fixed frequency pulse infrared light that the infrarede emitting diode of telepilot sends in X, the Y coordinate data of vertical direction and send CPU (central processing unit) to;
(3), CPU (central processing unit) with previous step rapid in detected infrarede emitting diode change into the mouse pointer of corresponding X, Y coordinate on television screen in X, the Y coordinate data of vertical direction, when the infrarede emitting diode of telepilot when vertical X or Y direction move, the mouse pointer sign on television screen also carries out moving of equidirectional and corresponding proportion distance;
(4), when at the mouse performance state, when pressing the command key of the correspondence on the telepilot, infrarede emitting diode becomes the remote control coding pulse with the key bit code of corresponding button through inner telecommand coder transitions, coded pulse is carried out pulse amplitude modulation to carrier wave, and launches modulated coded pulse from infrarede emitting diode;
(5), the remote controller key detecting unit receives the modulated coded pulse that infrarede emitting diode is launched, after decoding, give CPU (central processing unit) with corresponding keypress function signal conveys, CPU (central processing unit) sends X, Y coordinate data and the keypress function signal of telepilot to corresponding application software, when X, Y coordinate data and the keypress function signal of telepilot corresponding with lawful order program in the application software, then application software initiated lawful order program;
When pressing the mouse button on the telepilot (6), once more, telepilot sends mouse dormancy instruction to CPU (central processing unit), and CPU (central processing unit) screen-concealing mouse pointer, telepilot enter normal remote control button Control work state.
6. remote control thereof according to claim 5, it is characterized in that: remote controller position detecting unit testing process is in the described step (2): the fixed frequency pulse infrared light that infrarede emitting diode sends forms a hot spot through measuring on the target surface of object lens at array image sensor, hot spot is corresponding in the X of vertical direction, position in the Y plane at the position on the target surface and telepilot, when telepilot moves up and down, hot spot is made corresponding mobile on target surface, array image sensor is given image processing circuit with this Digital Image Transmission; Image processing circuit at first will carry out noise filtering to image, image processing circuit carries out threshold process to the digital picture through noise filtering, obtain comprising the binary image of light spot shape and positional information, calculate the centroid position of hot spot at last, just can obtain X, the Y coordinate data of telepilot vertical direction.
7. remote control thereof according to claim 6, it is characterized in that: described noise filtering adopts median filtering method, this median filtering method adopts a moving window that contains odd number point, the value of the window center point Mesophyticum with each point in the window is replaced, make pixel with the surrounding pixel value approaching pixel replacement bigger, thereby eliminate isolated noise spot with the difference of surrounding pixel gray-scale value.
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