KR930003486B1 - Method for selecting tv channels by remote controller - Google Patents

Abstract

The method is for selecting a channel immediately on TV or VCR by pushing only one digit number (0-9) and up/down switch. The system comprises a step (1A) for keying the number key, a step (2A) for storing the first digit and counting the predetermined time, a step (3A) for checking the second digit keying, a step (4A) for recognizing it for the second digit channel keying at receiving the keying, a step (5A) for at no keying nd counting is finished, a step (6A) at receiving up/down keying, a step (7A) for checking the keying number whether correct channel or not, a step (8A) for resetting the keying input at incorrect channel, and a step (9A) for sending the data at correct channel.

Description

Tuning 1 Digit Channel Using Numeric Keys (0-9) on the Remote Control

1 is a schematic block diagram of a device required for channel tuning in a general TV or VCR.

2 is a flow chart for carrying out the method according to the invention.

* Explanation of symbols for main parts of the drawings

A10: Tuner A20: Timer Microcomputer

A30: Fluorescent display plate A40: KEY MATRIX

1: RAM 2: ROM

3: FLD drive 4: key input

5: phase locked loop output unit 6: central processing unit

7: Phase locked loop integrated circuit 8: Tuner

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for tuning a channel of a TV or a VCR set by a number key from 0 to 9 installed on a remote control in a TV or a VCR having a control function by a remote control. 1 digit channel by the number keys (0-9) of the remote control so that the channel can be tuned immediately by pressing the channel up / down switch after tuning using the number keys (0-9) on the remote control. It is about a station selection method.

In general, in the TV or VCR, channel selection involves pressing a channel that a user wants to watch using a remote control using numeric keys (0-9) installed on the remote control, and receiving a signal from the remote control outputted by the pressing. The TV or VCR receives and tunes the corresponding channel to tune the channel.

Conventionally, when a user selects a channel by pressing a numeric key (0-9) on the remote control when the user wants to switch channels while watching a TV or VCR, the microcomputer in the TV or VCR converts the tuned channel into 2 digits. When the user presses the numeric keys (0-9) and presses the 2 digits as shown in 02 to 09, the channel is immediately converted. If the 1 digit is pressed as shown in 2 to 9, the microcomputer in the TV or VCR is pressed. Waits for the second digit to be input after receiving the 1-digit signal, and performs channel tuning when there is no input. Since the wait time is set to about 2 seconds, the channel is tuned after the 1-digit channel tuning. There was a problem of waiting for the set time.

Accordingly, the present invention solves the above-mentioned disadvantages, and even if a 1-digit signal is applied during channel selection by the numeric keys (0-9) of the remote controller, when a channel up / down signal is subsequently received, the channel is immediately tuned and viewed. The purpose is to make it possible.

Hereinafter, with reference to the accompanying drawings, FIGS. 1 to 2 will be described in detail.

1 is a schematic block diagram of a device required for general channel tuning. The RAM 1, the ROM 2, and the central processing unit 6 are connected to the field drive 3, and the central processing unit 6 And a timer maker A20 configured to connect the phase-locked loop output unit 5 and the key input unit 4 to a fluorescent display panel A30 for displaying a channel tuned from the timer micom A20. A tuner section A10 comprising a tuner 8 for tuning a tuned channel and a phase locked loop integrated circuit 7, and a key matrix A40 for tuning the channel by a user.

2 is a process flow diagram embedded in the timer microcomputer A20 for carrying out the present invention, the process of starting the process of the present invention by inputting numeric keys 0-9 for channel selection (1A), and Inputting and storing digits and starting counting of a predetermined time (2A), determining whether a second digit is input (3A), tuning a 2 digit channel upon inputting a second digit (4A), In the absence of the second digit input, it is determined whether the count of the predetermined time is completed, and when the count ends, inserting 0 in front of the stored first digit to convert to a 2-digit channel (5A), and channel up in the state where the count is not finished. Step 6A of inserting 0 into the first digit channel input at the time of input / down key and converting it to 2 digit channels, and checking whether each channel is a normal channel number. A system 7A, a step 8A of resetting the key input in the case of an error channel, and a step 9A of outputting phase locked data of the corresponding channel in the case of a normal channel.

When explaining the present invention composed of the above-described processing flow in detail based on the action and effect as follows.

A key mattress (A40) installed inside the remote controller when the viewer tunes into another channel and selects channel 02-09 to watch using a number key (0-9) installed on the remote controller while receiving a TV broadcast. Is converted into a predetermined signal and transmitted to the predetermined signal, received by the key input unit 4 of the timer microcomputer A20 in the TV or VCR, and applied to the central processing unit 6.

At this time, the central processing unit 6 determines whether the input signal is the input of the numeric key according to the processing flow of the present invention stored in the ROM 2, and starts the processing of the present invention if the numeric key is input.

The first digit of the input numeric key is input and stored, and a predetermined count is started (2A).

Then, it determines whether there is a second digit input (3A), and if there is an input of the second digit, it recognizes it as a normal two digit channel with the data stored in the previous step (2A) and outputs phase locked data of the corresponding channel for tuning the actual channel. It branches to step 7A.

However, if the count set to the predetermined time without the input of the second digit ends, a zero is inserted before the stored first digit to convert to a 2 digit channel (5A), and if the count is not finished, the input of the channel up / down key is not performed. Check 6A.

At this time, if a channel up / down key is input by the user, the counting is not continued anymore, and the 1-digit channel (0-9) is converted (6A) into a 2-digit channel (00-09). The display outputs the displays 5A and 6A on the fluorescent display panel A30, and if there is no input of the channel up / down key, the step of checking the end of the predetermined time count again is branched.

Next, it is checked (7A) whether or not the channel obtained by the above steps 4A, 5A, and 6A is a channel number that normally exists.

If the channel is an error channel, the input is reset (8A). If the channel is a normal channel, the phase-locked data of the channel is output (9A) to the phase-locked loop output unit (5) so that the phase-locked loop data is tuner. It is output to A10 and the channel is tuned.

As described above, the present invention provides a predetermined delay for watching a tuned channel by switching the channel up / down continuously after switching the 1-digit channel when tuning 1-digit channel by the numeric key of the remote controller. By eliminating time, it is possible to eliminate boredom by the user and to reduce consumer doubts about the product due to time delay, thereby improving the reliability of the product.

Claims (1)

In a VCR and a TV with a built-in microcomputer, a step (1A) beginning with input of a numeric key (0-9) for channel selection, a step of inputting and storing a first digit (2A), and Determining whether the second digit is input (3A), recognizing the second digit channel input when the second digit is input (4A), and when the second digit input is absent, checking whether or not the count of the predetermined time has ended. Converting one digit to two digits (5A), and converting to a two digit channel by inserting a zero in front of the one digit channel input upon input of a channel up / down key without the count being completed (6A) And checking (7A) whether the channel from each of the steps (4A, 5A, 6A) is a normal channel number, resetting the key input (8A) in case of an error channel, and corresponding in the case of a normal channel. Output phase locked data of channel Step 1 digits (Digit) channel selection method of the number keys (0 to 9) on the remote control consisting of (9A) to.