CN101296334B

CN101296334B - Method for switching TV channel

Info

Publication number: CN101296334B
Application number: CN2008100675961A
Authority: CN
Inventors: 张小钊
Original assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Current assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Priority date: 2008-06-06
Filing date: 2008-06-06
Publication date: 2010-06-02
Anticipated expiration: 2028-06-06
Also published as: CN101296334A

Abstract

The invention discloses a method for switching TV channels, which includes the following steps that: the times for pressing numeral keys are recorded and the count value is added by one when the numeral key is pressed once while the figure corresponding to the pressed numeral key is stored in a corresponding storage unit in a CPU; the timing time of the CPU is preset; the count value is then judged whether to be less than three and if the count value is less than three, the CPU can control a circuit to carry out the timing after the numeral key is pressed down; after the CPU finishes the timing or three numeral keys are being pressed, the CPU then reads the figures previously stored from the storage unit in sequence to be combined as channel numbers of targeted channels and switches the channels to the targeted ones so as to complete the switching of the TV channels. The method of the invention realizes that the digits can be selected without the help of a plurality of selection keys and 256 channels can be switched only with the numeral keys, which results in that people can conveniently switch each channel; the operation of users can be simplified and a plurality of selection keys can be spared from a remote controller so as to save the cost.

Description

A kind of method of switching TV channel

[technical field]

The present invention relates to technical field of television sets, particularly a kind of method of switching TV channel.

[background technology]

Development along with tv broadcasting technology, a lot of local tv stations are all brought into use the satellite transmission TV programme, the TV programme that the user can watch is also more and more, often all has tens even more, and this has also increased the trouble of user's switching channels in the audiovisual life of enriching the user.The changing method of present TV channel generally is to increase a multidigit options button on remote controller, switches the one-bit digital state by the multidigit options button, two digits state and three bit digital states.Wherein, when figure place is a state,, press the program that the corresponding digital key just can switch 0 to 9 channel again by the multidigit options button; And when figure place is two states, switch the multidigit options button, just can switch the program of 00 to 99 channel again by twice numerical key; In like manner, when figure place is three states, switch the multidigit options button, just can switch the program of 000 to 255 channel again by three numerical keys.Though do the switching that can realize 256 channels like this, need often to switch the multidigit options button before the switching channels, very inconvenient, and also to set a multidigit options button on the remote controller more, increased the manufacturing cost of television set.

[summary of the invention]

For addressing the above problem, main purpose of the present invention is to provide a kind of method of switching TV channel, need not set digit, only directly gets final product TV frequency channel switching with numerical key, make people can switch each channel easily, and reduced the cost of television set.

For achieving the above object, technical scheme of the present invention is:

A kind of method of switching TV channel comprises the steps:

The number of times of numerical key pressed in record, and numerical key is by then adding 1 with count value next time, and the value of the corresponding numeral of the numerical key of pressing is deposited in the memory cell of CPU correspondence;

Preestablish the CPU timing time, whether judge count value less than three, when count value less than three the time, press numerical key after, cpu control circuit carries out timing;

After the CPU timing finishes or has supressed three numerical keys, CPU from memory cell successively preface will before the numeral that deposit in read out, be combined as the channel of target channel, and channel switched to target channel, finish the switching of television channel.

Compared to prior art, the present invention only utilizes numerical key, realized that need not carry out figure place by the multidigit options button selects, only just can switch 256 channels with numerical key, make people can switch each channel easily, thereby both simplified user's operation, can remove the multidigit options button from remote controller again, saved the cost of remote controller.

[description of drawings]

Fig. 1 is the principle circle figure of the method for switching TV channel of the present invention.

Fig. 2 is the method flow diagram of switching TV channel of the present invention.

[embodiment]

See also shown in Figure 1ly, the method for a kind of switching TV channel of the present invention includes the remote controller that is used to receive the remote control mode that remote controller sends and receives head, remote controller is received decoding unit, the CPU processor that is connected with decoding unit and the timing circuit that is connected with the CPU processor, memory and the tuner that remote control mode that head receives is decoded.Wherein, remote controller sends remote control mode, receives after head is received remote control mode it to be passed to decoding unit, by decoding unit remote control mode is decoded, and will solve the corresponding key assignments of remote control mode and send to the CPU processor; The CPU processor is write the key assignments that obtains in the memory, and a count value is set, and starts timing circuit simultaneously, reaches at 3 o'clock in timing end or count value then value corresponding is read out from memory, be combined as channel after, write tuner.Described timing circuit just picks up counting after receiving the signal of CPU, sends a signal when timing finishes to CPU; Described memory is used for each numeral of programs stored; And after described tuner receives the program numerical value of CPU, forward the signal of output to corresponding channel, thereby finish the switching of television channel.

Figure 2 shows that the flow chart of switching TV channel method of the present invention, under the state of television startup and operate as normal, judged whether that numerical key is pressed.Described numerical key only is present on the remote controller, and after the user pressed numerical key on the remote controller, remote controller sent corresponding code value, after the remote controller on the television set receives head and receives signal, obtains concrete code value after being decoded by decoding unit; The number of times of numerical key pressed in record, and numerical key is by then adding 1 with count value next time, and the digital value of the numerical key correspondence of pressing is deposited in the memory cell of CPU correspondence; Judge that whether count value is less than three.Present general maximum 256 channels that have only of television set, so the numerical key switching channels is at most only just passable with pressing three keys, writes down with count value and supress several numerical keys continuously, after three numerical keys all are pressed, need not wait for that directly switching channels is just passable; When count value less than three the time, press numerical key after, cpu control circuit will pick up counting, and then has judged whether that numerical key is pressed, if there is not numerical key to be pressed, then CPU continues timing.Preestablish the CPU timing time, when the CPU timing reached predefined timing time, the CPU timing finished.When count value less than three the time, if there is numerical key to be pressed, then cpu control circuit restarts timing.After CPU timing end or user have supressed three numerical keys, CPU reads out according to the numeral that order will deposit in before from memory cell, respectively as hundred of target channel, ten and a position, then channel is switched to target channel, and with the count value zero clearing, thereby finish the switching of television channel.

In the practical operation, when the user need switch to the channel of one digit number, during as the channel of: 0-9, only need press corresponding key, wait for then (for example 3 seconds) behind the pre-set timing time, just can switch to target channel; Need switch to the channel of two figure places as the user, during as the channel of: 10-99, press the numerical key of ten correspondences of target channel earlier, then within timing time, press a target channel corresponding numerical key in position again, after behind the timing time that wait configures, just can switch to target channel; When the user need switch to three-figure channel, during as the channel of: 100-255, press target channel successively hundred, ten and the position a numeral, can not surpass the timing time that configures the blanking time of each button, after having pressed a numeral of position, just can be directly switch to target channel.Like this, only, just realized the switching of 256 channels by numerical key, simple to operate, quick, and more practical.

Most preferred embodiment described above only is that the present invention is set forth and illustrates, but is not limited to disclosed any concrete form, and it is possible carrying out many modifications and variations.

Claims

1. the method for a switching TV channel is characterized in that, comprises the steps:

2. the method for switching TV channel as claimed in claim 1 is characterized in that: when count value less than three the time, if there is not numerical key to be pressed, then CPU continues timing.

3. the method for switching TV channel as claimed in claim 1 is characterized in that: when count value less than three the time, if there is numerical key to be pressed, then cpu control circuit restarts timing.

4. as the method for any one described switching TV channel in the claim 1 to 3, it is characterized in that: preestablish the CPU timing time, when the CPU timing reached predefined timing time, the CPU timing finished.

5. the method for switching TV channel as claimed in claim 4, it is characterized in that: after CPU timing end or user have supressed three numerical keys, CPU from memory cell according to order will before the numeral that deposit in read out, respectively as hundred of target channel, ten and a position.

6. the method for switching TV channel as claimed in claim 5 is characterized in that: after channel is switched to target channel, and the count value zero clearing.