KR0178613B1 - Method for automatically switching the reception mode of a cable tv - Google Patents

Abstract

According to the present invention, when one of the keys of the cable TV is input from the cable TV converter or the TV composite transmitter when watching a general TV broadcast, or a key other than the cable TV is input when the cable TV broadcast is watched, the user arbitrarily enters the microprocessor of the TV. By automatically switching to the arbitrary setting mode connected to the set high frequency channel 3 / high frequency channel 4 / VCR / other input terminal, it is possible to reduce the channel operation process in cable TV broadcasting and general TV broadcasting. The present invention relates to a method of automatically switching a reception mode of a cable TV, which is characterized by a first step of checking a current reception mode when there is an arbitrary key input, and the result of the check of the first step. Mode, the cable TV converter transmitter or the TV composite transmitter checks the key value of the cable TV to determine if there is a key input from the cable TV. A second step of changing the A / V switch control IC to a high frequency input terminal while simultaneously changing the channel selection data of the tuner to the cable TV channel reception data so that the user can select an arbitrarily set input terminal; In the first step, when the cable TV reception mode is input, it checks whether or not a general TV broadcasting channel key is input, and when there is a channel key input of the general TV, changes the channel selection data of the tuner to channel data before transferring to the cable TV, The third step is to switch the / V switch control IC to the high frequency input terminal.

Description

Receiving mode automatic switching method of cable TV

1 is a block diagram showing a part of a TV set for carrying out a method for automatically switching a reception mode of a cable TV according to the present invention.

2 is an operation flowchart showing an embodiment of a TV reception mode automatic switching method according to the present invention.

* Explanation of symbols for main parts of the drawings

1: transmitter receiver 3: key input

5: microprocessor 7: tuner

9: A / V input selector 11: Composite video signal processor

The present invention relates to a method for automatically switching a reception mode of a TV, and more particularly, when one of the keys of the cable TV is input from the cable TV converter or the composite TV transmitter when watching a general TV broadcast, or when the cable TV broadcast is watched. When a key other than the TV is input, the cable TV broadcast and general TV are automatically switched to a random setting mode connected to the high frequency channel 3 / high frequency channel 4 / VCR / other input terminals set by the user in the microprocessor of the TV. The present invention relates to a method of automatically switching a reception mode of a cable TV, which can give a user convenience by reducing a channel manipulation process when watching a broadcast.

Conventionally, since a cable TV outputs a signal of a channel selected using a separate converter to a high frequency channel 3 or a high frequency channel 4 and a video terminal, it is inconvenient to select one of the three outputs when the cable TV is to be selected and viewed. There was a ham. That is, when you want to watch cable TV broadcasting while watching TV, you can turn on the cable TV's converter and select the high frequency channel 3 or the high frequency channel 4 and the video terminal again connected to the input terminal of the TV. Since the channel of the cable TV had to be selected, in order to watch the cable TV broadcast according to the conventional technology as described above, the input terminal of the TV must be remembered and changed every time the cable TV is watched. There were many troublesome problems during the switchover.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to allow a user to easily change a cable TV channel and a channel while watching a general TV broadcast. It is to provide a mode automatic switching method.

In order to achieve the above object, a feature of the automatic switching mode of the reception mode of the cable TV according to the present invention is a first step of checking the current reception mode when there is any key input, and the check result of the first step. In TV receiving mode, the cable selector inputs the tuner's channel selection data so that the user can select an arbitrary set input terminal if there is a key input from the cable TV. The second step of changing the received data to the tuner and simultaneously switching the A / V switch control IC to the high-frequency input terminal, and checking whether the general TV broadcasting channel key is input in the cable TV receiving mode in the first step. If there is a channel key input from the TV, change the tuner's channel selection data to channel data before moving it to the cable TV. In the yirueojim while the A / V switch control IC in a third step of switching to a high frequency input terminal to the transmission.

Hereinafter, a preferred embodiment of a method of automatically switching a reception mode of a cable TV according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a part of a TV set for carrying out a method of automatically switching a reception mode of a cable TV according to the present invention. As shown in FIG. 1, the receiver receives data received from a cable TV converter transmitter or a TV composite transmitter. The transmitter receiver 1 for inputting the signal, the key input unit 3 for allowing a user to select a channel or a function switching operation from the outside, and the channel tuning from a high frequency signal coming from an antenna to tune a general TV broadcast signal (high frequency signal). Using the tuner unit 7 and the output of the transmitter receiver unit, the key input state of the cable TV from the cable TV converter transmitter or the composite TV transmitter is checked, and the tuner unit and the A / V input selection unit according to the check result. A microprocessor (5) for automatically controlling channel switching operation, and a high frequency input signal (RF IN) The A / V switch control IC outputs the composite video signal processing unit 11 arbitrarily selected by the control operation of the microprocessor and inputs signals through a number of external input terminals (VIDEO-1… S-VHS-1…). A / V selection input section 9 is provided.

2 is an operation flowchart showing an embodiment of a method for automatically switching a reception mode of a cable TV according to the present invention. As shown in the drawing, the first step is a step performed when there is an arbitrary key input. Checking whether there is a key input of the general TV (S11), and if there is a key input, checking the current reception mode (S12), and the second step is the general TV reception mode as a result of the check of the first step. Checking the key value of the cable TV coming from the cable TV converter transmitter or the TV composite transmitter (S13), performing the operation according to the key control if it is not a key input of the cable TV, and returning to the first step (S14); If there is a key input of the cable TV, checking the user-specified random input terminal (S15), and selecting a channel of the tuner to select the user-specified random input terminal; Is converted into cable TV channel received data and transmitted to the tuner (S16), and the step of switching the A / V switch control IC to the high frequency input terminal (S17), and the third step is the cable in the first step Checking whether a general TV broadcasting channel key is input in the TV receiving mode (S18), performing an operation according to key control when the channel key input of the general TV is not input, and returning to the beginning (S19); If there is a channel key input of the step of changing the channel selection data of the tuner to the channel data before passing to the cable TV (S20) and the step of switching the A / V switch control IC to the high-frequency input terminal (S21) It is preferably made of.

Referring to the configuration as described above with reference to the operation of the automatic mode for receiving mode of the cable TV according to the present invention.

First of all, the present invention operates when there is an arbitrary key input for selecting a channel of a general TV broadcast or a cable TV while watching a cable TV or watching a general TV broadcast. 1) or check the key input section 3 (S11), and when any one of the keys is input, the current reception mode is checked immediately (S12) to determine whether it is a general TV broadcast reception state or a cable TV reception state. If the first step is performed and the check result of the first step is a normal TV reception mode (the AIR TV branch of S12), the key value of the cable TV coming from the cable TV converter transmitter or the TV composite transmitter is checked (S13) to input the key of the cable TV. If there is (Y branch of S13), the channel selection data of the tuner is converted to the cable TV channel reception data so that the user can check the arbitrary setting input terminal saved (S15) and select the corresponding terminal. Change and transmit to the tuner unit 7 (S16) and simultaneously switch the A / V switch control IC of the A / V input selector 9 to the high frequency input terminal (S17), on the contrary, In step 1, if the cable TV reception mode (CATV branch of S12) checks whether a general TV broadcasting channel key is input (S18), and if there is a channel key input of general TV (Y branch of S18), the channel selection data of the tuner is cabled. The third step of switching the A / V switch control IC of the A / V input selector 9 to the high frequency input terminal (S21) while changing to channel data before transferring to the TV (S20) is performed (S20). By doing so, the reception mode of the TV can be automatically switched by one key operation.

In other words, if you want to watch cable TV while watching a normal TV broadcast, check the code value of the power-on key (key of other cable TV) of the cable TV that supplies power to the cable TV converter. Is determined to be correct, and if so, it is automatically switched to any selected input terminal. For example, if the random input of the cable TV is currently selected as the second video terminal while receiving 13 channels of general TV broadcasting, select the A / V switch control IC as the second video terminal when checking the key input of the cable TV. It is possible to output the received contents. Also, if any input selection channel of the second video terminal and the cable TV is 4 channels, the tuner is changed to 4 channel data value when the key input of the cable TV is confirmed, and the A / V switch By selecting the control IC as a high frequency input terminal, automatic switching to general TV and cable TV is possible.

As described above, according to the cable TV reception mode automatic switching method according to the present invention, after the user selects an input terminal of the cable TV, the user does not have to remember which input terminal is input to the cable TV. It is useful to give convenience to use by minimizing the number of key presses when changing to.

Claims (1)

The first step of checking the current reception mode if there is any key input, and the cable TV from the cable TV converter transmitter or the TV composite transmitter When there is a key input, the channel selection data of the tuner is changed to the cable TV channel reception data so that the user can select the arbitrarily set input terminal that is saved, and the A / V switch control IC is switched to the high frequency input terminal at the same time. In the second step and the first step, in the cable TV reception mode, it is checked whether a general TV broadcasting channel key is input, and when there is a channel key input of the general TV, the channel selection data of the tuner is changed to the channel data before moving to the cable TV. 3 steps to switch A / V switch control IC to high frequency input terminal while transmitting to tuner Cable TV reception mode automatic switching method.