JPS58213520A - Device for channel selection of television receiver - Google Patents

Abstract

PURPOSE:To select a channel selected prior to the channel selected at present with a simple operation and to select two optional channels alternately with a simple operation by providing the titled device with a prior channel storing part. CONSTITUTION:If a remote controller 1 is operated in order to select the 15th channel e.g. when the 48th channel is selected at present by the television receiver, a decoder 6 is kept in the state that a channel specifying signal to specify the 15th channel is stored in itself. Receiving said latch command signal from the decoder 6, a delay register 10 sends a channel specifying signal to display the 48th channel which has been already stored to a prior channel storing register 9 and stores a channel specifying signal to specify the 15th channel which is outputted from a selector 8. The prior channel storing register 9 receives and stores the channel specifying signal to specify the 48th channel which is sent from the selector 8.

Description

[Detailed Description of the Invention] Field of Application The present invention relates to a novel channel selection device for a television receiver.
In particular, it is possible to easily select the channel that was selected before the currently selected channel, and even to select any two channels.
An object of the present invention is to provide a novel channel selection device for a television receiver, which allows users to alternately select and watch two channels by simple operations.

Background When enjoying television broadcasts, it is not uncommon to select two channels alternately. For example, one channel is broadcasting a boxing title match, and another channel is broadcasting a professional baseball game, so during each round of boxing you watch boxing, and during the break between each round you watch professional baseball. This is the case. In such a case, conventionally, it was necessary to perform an operation to designate channel 7- every time the channel fA was changed. Moreover, switching channels can be surprisingly troublesome if done frequently. Particularly in television receivers of the type that use a numeric keypad to select channels, which is common in the United States, it is very troublesome because it is necessary to press the key switch twice to select one channel. Furthermore, in places like the United States where there are dozens of broadcasting channels, it is easy to forget or misremember which channel is broadcasting the program you want to watch. It is not uncommon to have to look at tables, etc.

Purpose: Therefore, the present invention makes it possible to select a channel that was selected before the currently selected channel with a simple operation, and furthermore, it is possible to switch arbitrary two channels by a simple operation. The present invention aims to provide a new channel selection device for a television receiver that can select a channel.

Technical Means for Achieving the Object The configuration of the present invention for achieving the above object includes a tuning operation section for specifying a channel to be selected by key operation, etc., and a channel selection operation section for specifying a channel to be selected from the tuning operation section. The channel selection control circuit includes a channel selection control circuit that controls the tuner according to the channel designation value. The memory content changes every time the current tuning changes, and a 111 channel storage section is provided to store a channel designation signal that designates the channel that was tuned before the current tuning. The η tuner is controlled by the channel designation signal.

Embodiments Below, the channel selection device for a television receiver of the present invention will be explained in detail according to embodiments shown in the accompanying drawings.

The drawing shows an example of the implementation of a channel selection device for a television receiver according to the present invention.

1 is a remote controller for specifying a selected channel, and is provided with ten key switches 20 to 29 and a previous channel selection switch 3.

Each of the ten key switches 20 to 29 is assigned a number from "0" to "9", and the assigned number is displayed on the top surface of each key switch. When one key switch 2 is pressed, an infrared numeric coded signal encoded with the same numerical value as the number assigned to that key switch 2 is emitted from the remote controller l. Further, when the previous channel selection switch 3 is pressed, a previous channel selection signal by infrared rays is emitted from the motor controller 1.

4 is a channel selection control circuit within the television receiver body;
TI is its remote control signal input terminal.

A photodiode PD is grounded between this remote control signal input terminal Tl and ground. This photodiode FD receives an infrared numeric coded signal or a previous channel selection signal from the remote controller 1, converts it into an electrical signal, and converts the converted numeric coded signal or previous channel selection signal into an electric signal. is input to the input circuit 5.

The input circuit 5 functions to convert the input signal into a signal of a predetermined level and send it to the decoder 6 one bit at a time.

The lever receives the numerically encoded signal or the previous channel selection signal sent from the input circuit 5, and functions to generate a latch command signal or a switching signal for selecting the previous channel, and 6a is a medium signal memory. Section 6b is a first-order signal storage section.

The signal input to the decoder 6 is first input to the first-order signal storage section 6b, regardless of whether it is a numerically coded signal or a previous channel selection signal. Then, in that state, decoder 6
When a new signal is input to the 1st place signal storage section 6b, the signal inputted to the 1st place signal storage section 6b is shifted to the 10th place signal storage section 6a, and the signal newly input to the Tekotaro is shifted to the 1st place signal storage section 6b.
is input. If the key switch 2 of the remote controller l is pressed twice, and as a result two numerically encoded signals are sequentially input to the decoder 6,
In the end, the numerically encoded signal generated by the first press of the key switch 2 is stored in the intermediate signal storage section 6a,
Further, the numerically coded signal generated by the next push of the key switch 2 is stored in the first signal storage section 6b. Then, the intermediate signal storage section 6a and the first signal storage section 6
A channel designation signal designating one channel is constructed by the two numerical codes No. 16 stored in "b" and "b". Therefore, this decoder 6 has two numbers.

Every time a coded signal is received, one channel designation signal is assumed to have been manually input, and one false command signal is generated. One niJ channel selection switching signal is generated every time one ij channel selection signal is input manually.

7 is a buffer, and when the decoder 6 also receives the latch command signal, it takes in the channel designation m in the decoder 6. 8
is a selector which, when receiving a latch command signal from the decoder 6, selects the buffer 7 and takes in the channel designation signal stored therein, and when receiving a previous channel selection switching signal from the decoder 6, selects the previous channel. It functions to select the storage register 9 and take in the channel designation signal stored therein. Each time the previous channel storage register 9 receives a latch command signal or a previous channel selection switching signal from the decoder 6, the delay register 10
It performs f-movement to capture and store the channel designation signal from. Further, when the delay register 10 receives a latch command signal or a previous channel selection switching signal from the decoder 6, it sends the channel designation signal already stored in the register IO to the previous channel storage register 9, and also sends a new channel designation signal from the selector 8. It functions to capture and store channel designation signals. That is, the delay register 10 holds the channel designation signal to be stored in the previous channel 9.

11 is a frequency setting circuit that converts the channel designation signal sent from the selector 8 into a frequency control signal;
If ROM, its frequency control signal is added to the PLL channel selection circuit 12. The PLL tuning circuit 12 receives the frequency control signal and controls tuning of the tuner 13 of the television receiver.

14 is a numeric keypad input circuit which processes the numeric keypad human input signal generated by operating the numeric keypad provided on the main body of the television picture receiver; is processed in the same way as the signal.

The operation of the illustrated channel selection device will be explained below.

For example, when trying to select the 48th channel by operating the remote controller l, first press the key switch 2
to say something. Then, a numerically encoded infrared signal encoded with "4" is emitted from the remote controller l, and the signal is received by the photodiode PD. Then, the numerically coded signal is input to the input circuit 5.
The signal is then manually input to the first-order signal storage section 6b of the decoder 6.

Next, after pressing the key switch corresponding to the numerical value in the tens place of the channel, the key switch 2 corresponding to the numerical value in the negative place of the channel, in this example, "8" is pressed. Then, "8" is displayed from the remote controller.
An infrared numerically encoded signal is emitted, and the signal is received at the Fort Ty Auto FD. The signal is then input to the decoder 6 via the input circuit 5. Then, the numeric coded signal that encodes "4" stored in the negative signal storage section 6b is shifted to the intermediate signal storage section 6a, and encodes the newly input "8" to the Teko Taro. The resulting numerically encoded signal is stored in the first-place signal storage section 6b. Thus, the decoder 6 is in a state where a channel designation signal designating the 48th channel is stored. Then, the decoder 6 sends a latch command signal to the buffer 7, selector 8, delay register IO, and previous channel storage register 9.

In response to the latch command signal from the decoder 6, the /si/fa 7 enters a state where it takes in the channel designation signal stored in the decoder 6, and the selector 8 transfers the channel designation signal in the buffer 7 to the frequency setting circuit 11 and the delay register 1.
0, the channel designation signal designating the 48th channel in the decoder 6 is first loaded in parallel into the buffer 7, and then sent from the amplifier to the delay register 10 and the frequency setting circuit 11 via the selector 8. Ru. When the frequency setting circuit 11 receives a channel designation signal from the selector 8, it generates a frequency control signal corresponding to the signal and outputs it to the PLL cross-station synchronization circuit 12. Then, the PLL channel selection circuit 12 controls the tuner 13 to select the 48th channel. As a result, the television receiver becomes tuned to the 48th channel.

The latch command signal generated from the decoder 6 is also applied to the delay register 10, and upon receiving the latch command signal, the delay register IO transfers the channel designation signal stored as an existing number to the previous channel storage register. The delay register 10 functions to receive and store the channel designation signal sent from the selector 8 as well as to send it out.
is in a state where a channel designation signal designating the 48th channel is stored.

When the television receiver is in the state where the 48th channel is selected and the remote controller 1 is operated to select, for example, the 15th channel, the following will occur. That is, when selecting the i15 channel, first press the key switch 21 corresponding to the tens digit "l", then press the key switch 25 corresponding to the negative digit "5". I mutter. Then, as is clear from the above explanation, the intermediate signal storage section 6a of the decoder 6 stores a signal coded as rlJ, and the - signal storage section 6b stores a signal coded as "5", and the decoder 6 stores a signal coded as "5". 6 is in a state where a channel designation signal designating the 15th channel is stored. When this state is reached, a latch command signal is immediately sent from the decoder 6 to the buffer circuit 7, selector 8, etc., so that the channel designation signal that designates the 15th channel stored in the decoder 6 is sent to the buffer circuit 7, selector 8, etc.
is loaded into the frequency setting circuit 1 via the selector 8.
1 is loaded. Therefore, the tuner 13 of the television receiver is tuned to the broadcast wave of the 15th channel.

On the other hand, when the delay register 10 receives the latch command signal generated from the decoder 6, the
A channel designation signal for displaying the 8th channel is sent to the previous channel storage register 9, and a channel designation signal for designating the 15th channel from the selector 8 is stored. Further, the previous channel storage register 9 receives and stores a channel designation signal sent from the selector 8 that designates the 48th channel. Thus, the previous channel storage register 9 stores a channel designation signal designating the channel selected before the current channel selection, that is, the 48th channel.

Next, when the front channel designation switch 3 of the remote controller l is pressed, a front channel selection signal is emitted from the remote controller l, and the front channel selection signal is received by the foI diode FD. The previous channel selection signal is inputted to the first-order signal storage section 6b of the decoder 6 via the input circuit 5, and as a result, the previous channel selection switching signal is sent from the decoder 6 to the selector 8, decoder storage register 9, and delay register 10. or sent.

When the selector 8 receives the previous channel selection switching signal, it selects the previous channel storage register 9, takes in the channel designation signal stored therein, that is, the channel designation signal designating the 48th channel, and sends it to the frequency setting circuit. 11 and delay register IO. As a result, the television receiver changes from a state where the 15th channel is selected to a state where the 48th channel is selected.

On the other hand, upon receiving the previous channel selection switching signal, the delay register 10 sends a channel designation signal specifying the 15th channel stored at that time to the previous channel storage register 9, and at the same time, the delay register 1O sends out a channel designation signal designating the 15th channel stored at that time to the previous channel storage register 9. A channel designation signal designating the 48th channel is stored. Further, the previous channel storage register 9 receives the previous channel selection switching signal and stores the delay register lO.
Since the channel designation signal sent from the channel designation signal is stored, the content of the stored channel designation signal changes from the 48th channel to the 15th channel.

Next, when the previous channel selection switch 3 of the remote controller l is pressed again, the channel designation signal that designates the 15th channel stored in the previous channel storage register 9 is sent to the frequency setting circuit 11 through the selector 8. , the television receiver is 48
The state where the channel is selected changes to the state where the 15th channel is selected. At the same time, the delay register l
The memory content of O changes from the channel designation value, number, which specifies the 48th channel, to the channel designation number, number 44, which designates the 15th channel, and the memory content of the previous channel memory register 9 changes from the channel designation value, No. 44, which designates the 15th channel. The designation signal changes to a channel designation signal that designates the 48th channel.

By pressing the front channel selection switch 3, the 48th channel and the 15th channel can be selected alternately.

In addition, if you stop alternately selecting the 48th channel and the 15th channel and select another channel, the number corresponding to the tens place value of the new channel you are trying to select. Needless to say, it is sufficient to press the key switch 2 corresponding to the numerical value in the negative place, and then press the key switch 2 corresponding to the numerical value in the negative place.

Application example The operation of the channel selection device has been explained using the case where the remote controller 1 is operated as an example, but the channel selection device also operates when the key switch or previous channel selection switch on the main body of the television receiver is operated. The operation is completely the same as when operating the remote controller l.

Effects As described above, the channel selection device of the television receiver according to the present invention includes a channel selection operation section for specifying a channel selection by key operation, etc., and a channel selection operation section for specifying a channel selection from the channel selection operation section. The channel selection control circuit includes a channel selection control circuit that controls the tuner according to a specified signal, the channel selection operation section is provided with a previous channel selection switch, and the channel selection control circuit is provided with a channel selection switch that controls the tuner every time the channel to which the television receiver is tuned changes. A previous channel storage section is provided for storing a channel designation signal whose memory content changes and designates the channel tuned before the current tuning, and when the previous channel designation switch is operated, the channel designation stored in the previous channel section tU is stored. It is characterized in that the tuner is controlled by the signal, and the channel selection control circuit is provided with a previous channel storage section for storing a signal specifying a channel tuned before the current tuning. , When the previous channel selection switch is operated, the channel designation 4 stored in the previous channel storage unit is selected.
Since the tuner is controlled by No. 8,
By operating the n11 channel selection switch, a previously tuned channel can be easily selected, and two channels can also be easily selected alternately.

[Brief explanation of drawings]

The drawing is a block diagram showing an example of an embodiment of a channel selection device for a television receiver according to the present invention. Explanation of symbols 1...Tuning operation unit, 2...Key, 3...Previous channel selection switch, 4...Tuning control circuit, 9Φ,...
Front channel storage unit, 13ψ...Tuner applicant Sony Corporation

Claims (1)

[Claims] (1) Consisting of a tuning operation unit that specifies the selected channel by key operation, etc., and a tuning control circuit that controls the tuner in response to a channel designation signal that specifies the selected channel from the tuning operation unit, The channel selection operation section is provided with a previous channel selection switch, and the channel selection control circuit is configured to change the memory contents each time the channel to be tuned on the television receiver changes and designate the channel tuned before the current tuning. The tuner is characterized in that the tuner is provided with a previous channel storage section for storing a channel designation signal stored in the previous channel storage section, and when the previous channel designation switch is operated, the tuner is controlled by the channel designation signal stored in the previous channel storage section. Television receiver channel selection device