CN1294744C - Method and device for, realizing channel tuning uniformity between different TV sets - Google Patents
Method and device for, realizing channel tuning uniformity between different TV sets Download PDFInfo
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- CN1294744C CN1294744C CNB2004100533430A CN200410053343A CN1294744C CN 1294744 C CN1294744 C CN 1294744C CN B2004100533430 A CNB2004100533430 A CN B2004100533430A CN 200410053343 A CN200410053343 A CN 200410053343A CN 1294744 C CN1294744 C CN 1294744C
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Abstract
The present invention discloses a device for realizing the switching consistency of channels between different televisions, which comprises two television station searching appliances, a display and a remote controller, wherein the display is connected to the two television station searching appliances, the two station searching appliances receive common television signals, and the remote controller can transmit control signals to the two station searching appliances. High frequency heads of two television station searching appliances are controlled through frequency synthesis, and an I<2>C serial data communication path is connected between the two television station searching appliances; a time delay wire and a timing time sequence switch are connected in series at least between a CPU of the first station searching appliance and the high frequency head of the second station searching appliance, wherein the time delay wire is matched with data transmission in terms of time, and the timing time sequence switch ensures communication validity; time sequence switches for timing control are arranged in the remote controller and the first station searching appliance. The present invention also discloses a method for realizing the switching consistency of channels. After the technical scheme is used, the switching consistency of different television channels can be realized through one key.
Description
Technical field
The present invention relates to the handoff technique of television channel, more particularly, relate to the method and apparatus of between different television sets, realizing the channel switch unanimity, especially only just can realize the technology of channel switch unanimity by a key.
Background technology
Up to the present, realization channel switch unanimity still can not use " key conversion " to finish between different television sets, further, on television set with double vision window function, all can only realize the channel exchange between the double vision window between the double vision window of same TV, and can not be with the channel unanimity between key realization double vision window.Simultaneously, realize that with a key different TV channel conversion unanimities have the very big market demand again.The benefit of its maximum is to have made things convenient for that the consumer's use and appreciate TV programme.Such as: preview wishes that to good TV programme a key just can realize the transfer to the TV main frame on the subsidiary engine that spectators are televiewing.But this is in existing TV tech, comprises that double vision window TV can't realize.Therefore just need a kind of technology that can realize the channel switch unanimity between the different television sets by " key ".
Summary of the invention
Purpose of the present invention just provides a kind of method and apparatus of can " key " realizing the channel switch unanimity between the different television sets.
According to an aspect of the present invention, a kind of equipment of realizing the channel switch unanimity between different television sets is provided, comprise that two TVs search platform device and connected display, described two TVs are searched the platform device and are received common TV signal, also comprise a remote controller, remote controller can be searched platform device emissioning controling signal to two TVs, and wherein: the tuner that two TVs are searched the platform device all adopts frequency synthesis control, and two TVs are searched between the platform device and are connected with I
2The passage of C serial data communication, wherein, the timing sequence switch of the delay line that between CPU that first TV is searched the platform device and second TV are searched the tuner of platform device, is serially connected with matched data transmission in time at least and the validity of guaranteeing to communicate by letter; The remote controller and first TV are searched has time-controlled sequence switch in the platform device.
In above-mentioned equipment, described two TVs are searched between the platform device and can be adopted following connected mode: the switching on and shutting down control pin that first TV is searched the CPU of platform device is connected to first process chip; The CPU that first TV is searched the platform device also provides the bus communication data that comprise data line signal SDA and clock signal SCL by delay line to first process chip, and the bus communication data are forwarded to the tuner that second TV is searched the platform device by first process chip.
Comprise in described first process chip: the switching on and shutting down pin that first TV is searched the CPU of platform device links to each other and by first analog switch of its control; Second analog switch of the tuner transmit clock signal SCL of platform device is searched in control to second TV; The 3rd analog switch of the tuner transmission of data signals SDA of platform device is searched in control to second TV; And, be connected to a circuit and regularly by the 4th analog switch of its control.
And described remote controller comprises: control switch; Power supply circuits are connected to control switch, when control switch is pressed, be switched on and begin the power supply; Three timing circuits that link to each other successively, each timing circuit is connected to the standby switches control circuit by an analog switch, the disconnection and the conducting of control standby switches.According to one embodiment of the present of invention, the timing circuit of described remote controller is realized by interconnected first process chip, second process chip by resistance and electric capacity realization, analog switch and standby switches control circuit.
According to a further aspect in the invention, provide a kind of method that realizes the channel switch unanimity between different television sets, adopt above-mentioned equipment, it comprises the steps:
S1. thereby the control switch on the remote controller is pressed and receives the instruction of conversion;
S2. by the conducting successively of three timing circuits that link to each other successively in the remote controller standby switches is connected twice continuously;
S3. first TV is searched the start again under the control of standby switches of platform device, and wherein high level appears in first TV CPU switching on and shutting down control pin of searching the platform device when starting shooting again, and this high level will be controlled the first analog switch conducting in first process chip;
S4. second analog switch in first process chip and the conducting under the control of first analog switch of the 3rd analog switch, thus described data line signal SDA and described clock signal SCL are passed to the tuner that described second TV is searched the platform device;
S5. the timing circuit that is connected to first process chip regularly triggers the 4th analog switch, turn-offs the second and the 3rd analog switch in first process chip, thus the data communication that the end and second TV are searched the tuner of platform device.
When the remote controller in the aforesaid specific embodiment of employing, the process of step S2 comprises:
By a pin of described second process chip output high level, to the electric capacity charging in first, second and the 3rd timing circuit, the electric capacity in each timing circuit is full of the asynchronism(-nization) of electricity; First timing circuit at first triggers the analog switch closure in first process chip, thereby connects the standby switches that is attached thereto for the first time; Behind the electric capacity full charge of second timing circuit, trigger the analog switch in first process chip, thereby standby switches is disconnected; After the electric capacity of the 3rd timing circuit is full of electricity, triggers the analog switch in first process chip once more, thereby standby switches is connected for the second time.
After having adopted above-mentioned technical scheme, can realize that different TV channel conversions are consistent, thereby make many different television sets of a remote controller control become possibility, also make things convenient for different consumers to appreciate the demand of TV programme by " key ".
Description of drawings
Feature of the present invention and essence will become more obvious after the following detailed description to embodiment in conjunction with the accompanying drawings, wherein:
Fig. 1 is the structured flowchart according to the equipment of realization channel switch unanimity of the present invention;
Fig. 2 A is the circuit theory diagrams according to the remote controller in the equipment of realization channel switch unanimity of the present invention;
Fig. 2 B is an embodiment of the circuit of remote controller among the present invention.
Fig. 3 A is a circuit theory sketch of searching the platform device according to TV in the equipment of realization channel switch unanimity of the present invention;
Fig. 3 B is an embodiment of the circuit that TV is searched the platform device among the present invention.
Fig. 4 is the flow chart according to the method for realization channel switch unanimity of the present invention.
Embodiment
Further specify technical scheme of the present invention below in conjunction with embodiment.
At first referring to Fig. 1, Fig. 1 is the structured flowchart according to the equipment 100 of realization channel switch unanimity of the present invention.This equipment 100 comprises that first TV searches platform device 102, the first TVs and search platform device 102 is connected to first display 104 by the A/V output A/V input; Equally, also have one second TV to search platform device 106, the second TVs and search platform device 106 is connected to second display 108 by the A/V output A/V input.Platform device 102 searched by first TV and second TV is searched the platform device 106 same TV signal that receive from antenna 110, and a remote controller 112 can be searched platform device 102,106 emissioning controling signals to two TVs.First, second TV is searched between the platform device 102,106 has the I of being used for
2The passage of C universal serial bus efficient communication, wherein, at least between searching the tuner of platform device 106, CPU that first TV is searched platform device 102 and second TV be serially connected with the delay line of matched data transmission in time and the timing sequence switch of the validity of guaranteeing to communicate by letter, this point description in further detail below.The tuner that first and second TVs are searched the platform device all adopts frequency synthesis control.According to embodiments of the invention, search at remote controller 112 and first TV and all to have time-controlled sequence switch in the platform device 102.
Basic mentality of designing of the present invention is: when the CPU that searches the platform device when TV received from the standby command of remote controller, the switching on and shutting down control pin of CPU will present low level and remove to turn-off main power source, realizes standby; When the CPU that searches the platform device when TV received from the standby command of remote controller once more, its switching on and shutting down control pin high level will occur and remove to wake up main power source, realizes start.Simultaneously, when waking main power source up and realize starting shooting again, TV is searched the CPU of platform device can be with channel information data relevant before the shutdown, with I
2The mode of C serial data communication sends to tuner.If when the CPU that searches the platform device at first TV receives standby command, can effectively connect the tuner that second TV is searched the platform device, send I to realize tuner from the platform device to second TV that search
2The C data; Simultaneously do not allow first TV search the platform device again and holding state really occurs, then realize that with a key the consistent hope of different TV channel conversions just can realize.The CPU switching on and shutting down that the present invention utilizes first TV to search in the platform device 102 are just controlled pin in the process of start again, high level can occur when starting shooting again.This high level can be used as first TV and search the triggering signal that platform device 102 and second TV are searched open communication between the platform device 106.So, how to realize that the CPU that button once makes first TV search in the platform device 102 has started shooting again into the emphasis of design.
To this, the present invention adopts following remote control circuitry., be the circuit theory diagrams of remote controller of the present invention at first with reference to figure 2A.The operation principle of Fig. 2 A is such: when pressing " key transfer " key K1, additional power supply circuits 202 are switched on, and three timing circuits 204,206,208 are started working respectively, and the timing length of these three timing circuits is different.Worked by first timing circuit 204 at first, sequence switch K2 is switched on, and makes standby switches (POWER) the key K5 that is attached thereto in the remote controller be switched on triggering; Then, second timing circuit 206 works, and sequence switch K3 is switched on, this control end that just makes sequence switch K2 through K3 with " " UNICOM and be low level, cause sequence switch K2 to be cut off.The standby switches K5 that promptly is attached thereto is released; Then, worked by the 3rd timing circuit 208, sequence switch K4 is switched on, and the standby switches K5 that is attached thereto in the remote controller is switched on again; At last, the timer in the power supply circuits is to point, and power supply circuits cut off the power supply automatically, and sequence switch K4 is released, and the standby switches K5 that is attached thereto also is released.Through the effect of a series of like this timing sequence switch, trigger standby switches key K5 by twice automatically thereby finished automatically on remote controller.
If Fig. 2 B is a concrete circuit of implementing according to above-mentioned circuit theory diagrams.Among this embodiment, two sequence switch, standby switches control circuit and power supply circuits that process chip realizes simulating have been adopted.Wherein first process chip is " 4066 " chip, and second process chip is " 555 " chip.At first, when K1 sent the instruction of " key transfer " on pressing remote controller, the P22 pin of the power supply circuits of being made up of " 555 " time-base integrated circuit was by the K1 reset, P23 pin output high level, and adjunct circuit begins to obtain power supply.Do an explanation herein, three timing circuits all are to be added electric capacity and constituted by resistance among this embodiment, for the process of electric capacity charging is process regularly.Power moment, the resistance R 1 of first timing circuit also has little time capacitor C 1 charging, and capacitor C 1 two ends all present high level.I.e. " 4066 " chip simulation switch P 113 pin present high level, so the K2 closure of " 4066 " chip P11, P12 pin, the standby switches that is attached thereto (POWER) key K5 just is switched on.After having served as blink, the capacitor C 2 of second timing circuit is behind resistance R 2 full charges, the P112 pin of " 4066 " chip is high level, the K3 closure of " so 4066 " P110, P111 pin, thereby P 113 pin warp " 4066 " chip P110, the P111 pin of " 4066 " chip connect " " and reset.Promptly 13 pin of " 4066 " chip are low level again, reset so the K2 of " 4066 " chip P11, P12 pin disconnects immediately.The standby switches key K5 that is attached thereto also is disconnected immediately.After after the blink, the capacitor C 3 of the 3rd timing circuit is behind resistance R 3 full charges, and the P15 pin of " 4066 " chip is high level, so the K4 closure of " 4066 " P13, P14 pin, the standby switches key K5 that is attached thereto is switched on once more.After having spent blink again, the capacitor C 0 that links to each other with " 555 " time-base integrated circuit P26 pin is behind resistance R 0 full charge, promptly when the voltage of P26 pin during greater than 2/3rds supply power voltages, the P23 pin output of " 555 " time-base integrated circuit promptly transfers low level to, so power supply circuits stop powering to adjunct circuit.Regularly sequence circuit work is finished.The regularly effect of sequence circuit is exactly in order to realize automatically by twice standby switches key K5.
Introduce TV of the present invention at 3A and 3B in conjunction with the accompanying drawings below and search platform device part, the operation principle that TV is searched the platform device is such: the present invention utilizes first TV to search the high level of CPU switching on and shutting down control pin appearance when starting shooting again for the second time of platform device 102, remove effectively to control timing circuit and open timing switch K6, thereby make positive supply (+V) through pull-up resistor and timing switch K6, directly be added to the control end of timing switch K7 and timing switch K8, cause K7 and K8 controlled conducting simultaneously, the tuner that this CPU that just searches the platform device for first TV searches the platform device to second TV transmits data provides communication port.After the CPU that searches the platform device when first TV searched the tuner transmission ED of platform device to second TV, timing circuit was to point, and timing switch K9 is switched on.This moment since K7 and K8 control end through K9 with " " be connected, the control end of K7 and K8 is low level, so being turned off of K7 and K8.The work overall process of " thereby key transfer " is finished.Above-mentioned respectively organizes in the switch, and the switching on and shutting down pin that K6 promptly is with first TV is searched the CPU of platform device links to each other and by first analog switch of its control; K7 is exactly the tuner transmit clock signal SCL of platform device is searched in second analog switch from control to second TV; K8 is exactly the tuner data line signal SDA of platform device is searched in the 3rd analog switch from control to second TV; And K9 is connected to a circuit and by the 4th analog switch of its control regularly.
Fig. 3 B is the specific embodiment according to the foregoing circuit schematic diagram.The concrete operation principle of Fig. 3 B is such: at first under holding state, when the CPU that first TV is searched the platform device received from the standby command of remote controller, the switching on and shutting down control pin of its CPU will transfer high level to by low level, thereby wakes the 12V main power source up.CPU also will transmit the I that is made of data wire SDA and clock SCL to tuner simultaneously
2C serial bus communication data.The high level that the CPU switching on and shutting down control pin that the present invention utilizes first TV to search the platform device just occurs when waking up, remove to act on analog switch K6 and timing circuit. make the P112 pin of first process chip " 4066 " analog switch be high level, thereby make the analog switch K6 closure of " 4066 " chip P110, P111 pin.At this moment, positive supply (+V) through pull-up resistor R5 and analog switch K6, act on the control pin P15 and the P113 of " 4066 " chip, make it be high level, thereby make the analog switch K8 of the analog switch K7 of P11, P12 pin of " 4066 " chip and P13, P 14 pin closed simultaneously.So just be CPU that first TV is searched the platform device searches tuner transmission I from the platform device to second TV
2The C data provide effective communication port.The CPU that searches the platform device when first TV searches the tuner transmission I of platform device to second TV
2The SCL of C universal serial bus and SDA ED, promptly just after having spent a period of time, capacitor C 6 in the timing circuit makes the P16 pin of " 4066 " chip be high level behind resistance R 6 full charges, thereby makes the P18 of " 4066 " chip, the analog switch K9 closure of P19 pin.Since the end of analog switch K9 connect " ", thus the P15, the P110 that cause linking to each other with the P16 pin on " 4066 " chip, P113 pin all because of connect " " reset.Thereby turn-offed the analog switch K8 of the analog switch K7 of " 4066 " chip P11, P12 pin and P13, P14 pin effectively.I
2The delay line that is connected in series on the C data line, purpose are to search SCL and SDA transfer of data between the platform device in order to mate two TVs in time, make transfer of data more effective and reliable.
Next again with reference to figure 4, Fig. 4 is that as shown in Figure 4, this method comprises following step according to the flow chart of the method for the realization channel switch unanimity of one embodiment of the present of invention:
S1. thereby the control switch on the remote controller is pressed and receives the instruction of conversion;
S2. by the conducting successively of three timing circuits that link to each other successively in the remote controller standby switches is connected twice continuously;
S3. first TV is searched the start again under the control of standby switches of platform device, and wherein high level appears in first TV CPU switching on and shutting down control pin of searching the platform device when starting shooting again, and this high level will be controlled the first analog switch conducting in first process chip;
S4. second analog switch in first process chip and the conducting under the control of first analog switch of the 3rd analog switch, thus data line signal SDA and clock signal SCL are passed to the tuner that second TV is searched the platform device;
S5. the timing circuit that is connected to first process chip regularly triggers the 4th analog switch, turn-offs the second and the 3rd analog switch in first process chip, thus the data communication that the end and second TV are searched the tuner of platform device.
When the circuit shown in the embodiment above the employing, the process of step S2 comprises:
By a pin of second process chip output high level, to the electric capacity charging in first, second and the 3rd timing circuit, the electric capacity in the timing circuit is full of the asynchronism(-nization) of electricity; First timing circuit at first triggers the analog switch closure in first process chip, thereby connects the standby switches that is attached thereto for the first time; Behind the electric capacity full charge of second timing circuit, trigger the analog switch in first process chip, thereby standby switches is disconnected; After the electric capacity of the 3rd timing circuit is full of electricity, triggers the analog switch in first process chip once more, thereby standby switches is connected for the second time.Concrete process explains in conjunction with Fig. 3 B in the above, has just no longer repeated here.
After having adopted above-mentioned technical scheme, can realize that different TV channel conversions are consistent, thereby make many different television sets of a remote controller control become possibility, also make things convenient for different consumers to appreciate the demand of TV programme by " key ".
The foregoing description provides to being familiar with the person in the art and realizes or use of the present invention; those skilled in the art can be under the situation that does not break away from invention thought of the present invention; the foregoing description is made various modifications or variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (7)
1. equipment of between different television sets, realizing the channel switch unanimity, comprise that two TVs search platform device and connected display, described two TVs are searched the platform device and are received common TV signal, also comprise a remote controller, remote controller can be searched platform device emissioning controling signal to two TVs, it is characterized in that
The tuner that described two TVs are searched the platform device all adopts frequency synthesis control, and two TVs are searched between the platform device and are connected with I
2The passage of C serial data communication, wherein, the timing sequence switch of the delay line that between CPU that first TV is searched the platform device and second TV are searched the tuner of platform device, is serially connected with matched data transmission in time at least and the validity of guaranteeing to communicate by letter;
The remote controller and first TV are searched has time-controlled sequence switch in the platform device.
2. equipment as claimed in claim 1 is characterized in that, described two TVs are searched between the platform device and can be adopted following connected mode,
The switching on and shutting down control pin that first TV is searched the CPU of platform device is connected to first process chip; The CPU that first TV is searched the platform device also provides the bus communication data that comprise data line signal SDA and clock signal SCL by delay line to first process chip, and the bus communication data are forwarded to the tuner that second TV is searched the platform device by first process chip.
3. equipment as claimed in claim 2 is characterized in that, comprises in described first process chip,
Link to each other with switching on and shutting down pin that first TV is searched the CPU of platform device and by first analog switch of its control;
Second analog switch of the tuner transmit clock signal SCL of platform device is searched in control to second TV;
The 3rd analog switch of the tuner data line signal SDA of platform device is searched in control to second TV; And
Be connected to a circuit and regularly by the 4th analog switch of its control.
4. equipment as claimed in claim 1 is characterized in that, described remote controller comprises,
Control switch;
Power supply circuits are connected to control switch, when described control switch is pressed, be switched on and begin the power supply;
First timing circuit of Xiang Lianing, second timing circuit and the 3rd timing circuit successively, each timing circuit is connected to the standby switches control circuit by an analog switch, controls the disconnection and the conducting of described standby switches.
5. equipment as claimed in claim 4 is characterized in that, the timing circuit of described remote controller is realized by interconnected first process chip, second process chip by resistance and electric capacity realization, analog switch and standby switches control circuit.
6. a method that realizes the channel switch unanimity between different television sets adopts equipment as claimed in claim 1, it is characterized in that, comprises the steps:
S1. thereby the control switch on the remote controller is pressed and receives the instruction of conversion;
S2. by the conducting successively of three timing circuits that link to each other successively in the remote controller standby switches is connected twice continuously;
S3. first TV is searched the start again under the control of standby switches of platform device, and wherein high level appears in first TV CPU switching on and shutting down control pin of searching the platform device when starting shooting again, and this high level will be controlled the first analog switch conducting in first process chip;
S4. second analog switch in first process chip and the conducting under the control of first analog switch of the 3rd analog switch, thus data line signal SDA and clock signal SCL are passed to the tuner that second TV is searched the platform device;
S5. the timing circuit that is connected to first process chip regularly triggers the 4th analog switch, turn-offs the second and the 3rd analog switch in first process chip, thus the data communication that the end and second TV are searched the tuner of platform device.
7. method as claimed in claim 6 is characterized in that, when adopting equipment as claimed in claim 5, the process of step S2 comprises:
By a pin of second process chip output high level, to the electric capacity charging in first, second and the 3rd timing circuit, the electric capacity in each timing circuit is full of the asynchronism(-nization) of electricity; First timing circuit at first triggers the analog switch closure in first process chip, thereby connects the standby switches that is attached thereto for the first time; Behind the electric capacity full charge of second timing circuit, trigger the analog switch in first process chip, thereby standby switches is disconnected; After the electric capacity of the 3rd timing circuit is full of electricity, triggers the analog switch in first process chip once more, thereby standby switches is connected for the second time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100533430A CN1294744C (en) | 2004-07-30 | 2004-07-30 | Method and device for, realizing channel tuning uniformity between different TV sets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100533430A CN1294744C (en) | 2004-07-30 | 2004-07-30 | Method and device for, realizing channel tuning uniformity between different TV sets |
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| CN1588996A CN1588996A (en) | 2005-03-02 |
| CN1294744C true CN1294744C (en) | 2007-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100533430A Expired - Fee Related CN1294744C (en) | 2004-07-30 | 2004-07-30 | Method and device for, realizing channel tuning uniformity between different TV sets |
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| CN114374865A (en) * | 2022-01-04 | 2022-04-19 | 珠海市金品创业共享平台科技有限公司 | Television remote controller and signal switching circuit thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5268712A (en) * | 1991-05-03 | 1993-12-07 | Deutsche Itt Industries Gmbh | Apparatus and method for search tuning of satellite television sound carriers |
| CN1347244A (en) * | 1999-10-06 | 2002-05-01 | Lg电子株式会社 | Device and method for channel control of digital TV |
| CN1402535A (en) * | 2001-08-11 | 2003-03-12 | 三星电子株式会社 | System and method for displaying searched channel during automatic searching |
| CN1413031A (en) * | 2001-10-15 | 2003-04-23 | 汤姆森许可贸易公司 | Method for testing transmission channel and receiver using said method |
| JP2003189200A (en) * | 1994-05-20 | 2003-07-04 | News America Publications Inc | Electronic television program guide |
| CN1455586A (en) * | 2002-05-02 | 2003-11-12 | 三星电子株式会社 | Multi-tuner television network information receiving apparatus and channel searching method |
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2004
- 2004-07-30 CN CNB2004100533430A patent/CN1294744C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5268712A (en) * | 1991-05-03 | 1993-12-07 | Deutsche Itt Industries Gmbh | Apparatus and method for search tuning of satellite television sound carriers |
| JP2003189200A (en) * | 1994-05-20 | 2003-07-04 | News America Publications Inc | Electronic television program guide |
| CN1347244A (en) * | 1999-10-06 | 2002-05-01 | Lg电子株式会社 | Device and method for channel control of digital TV |
| CN1402535A (en) * | 2001-08-11 | 2003-03-12 | 三星电子株式会社 | System and method for displaying searched channel during automatic searching |
| CN1413031A (en) * | 2001-10-15 | 2003-04-23 | 汤姆森许可贸易公司 | Method for testing transmission channel and receiver using said method |
| CN1455586A (en) * | 2002-05-02 | 2003-11-12 | 三星电子株式会社 | Multi-tuner television network information receiving apparatus and channel searching method |
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| CN1588996A (en) | 2005-03-02 |
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Assignee: SHANGHAI SUOGUANG VISUAL PRODUCTS CO.,LTD. Assignor: Central Research Institute of Shanghai radio and television (Group) Co.,Ltd. Contract fulfillment period: 2007.2.1 to 2012.2.15 Contract record no.: 2008310000114 Denomination of invention: Method and device for, realizing channel tuning uniformity between different TV sets Granted publication date: 20070110 License type: Exclusive license Record date: 20081006 |
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