KR19990001675A - How to Arrange Channels of VS Video Cassette Recorder - Google Patents

Abstract

The present invention relates to a channel alignment method of a VS video cassette recorder for rearranging each channel tuned in a VCR of a voltage synchronous (VS) tuning method in the order desired by the user. When a key signal for rearranging each channel is input in a state that is arbitrarily preset and stored in a memory, a first step of displaying each of the randomly set channel information menu screens, wherein each of the menu screens is for priority setting for each channel. A second step of respectively inputting priority information for each channel to each storage area on the menu screen according to a user's operation, and when the completion key signal of the channel rearrangement is inputted, Arbitrary set channel information is rearranged according to the input priority information. Sour, and a third step of turning off the channel information menu screen.

Description

How to Arrange Channels of VS Video Cassette Recorder

The present invention relates to a video cassette recorder (VCR) of a voltage synchronizing (VS) tuning method, and in particular, a VS video cassette suitable for rearranging channels selected in a VS VCR in an order desired by a user. A channel alignment method of a recorder.

In general, it has a channel automatic tuning function that can automatically search for a broadcast signal received by a TV or a VCR for each channel, thereby providing convenience of use, and this channel automatic tuning function is a broadcast signal input from all broadcast channels. By determining whether a channel is used or not and storing the channel to which each broadcast signal is input, the user switches up and down only the channels stored in the memory when switching channels, that is, when the channel is up or down. It is a function to facilitate.

On the other hand, channel automatic tuning method can be divided into FS (Frequency Synchronizing) method and VS (Voltage Synchronizing) method. In FS method, AFT (Automatic Fine Tunning) is used to tune the tuner of the receiver to the carrier frequency of each channel. Adjustment) The method of using voltage is adopted.

That is, when the PLL data for tuning the frequency of each channel is stored in the internal memory of the microcomputer of the receiving apparatus, and the user selects a predetermined channel by dialing, the microcomputer sends the PLL (Phase Lock Loop) data of the selected channel to the tuner. Is authorized.

A phase locked loop is formed in the tuner to control the oscillation frequency of the voltage controlled oscillator according to the PLL data, thereby receiving the frequency signal of the channel selected by the user.

On the other hand, in the VS method, the band (VHF LOW, VHF HIGH, UHF) switching voltage is selected, and the tuning voltage of the tuner is changed while increasing the tuning voltage from the reference tuning voltage by a predetermined step unit, and the broadcast signal of the tuner is intermediate. A method of finely changing the tuning voltage in accordance with the AFT voltage of the intermediate frequency signal by frequency processing is employed.

That is, if the video signal is separated from the broadcast signal of the set channel and the number of syncs separated from the video signal is included in the number of syncs corresponding to the normal broadcast signal, the PWM (pulse width modulation) signal is gradually increased. After that, the channel is set and stored according to the AFT curve that maintains the local oscillation frequency of the tuner, or the PWM is gradually increased by recognizing the AFT high voltage to detect and synchronize the channel to set and store the channel.

Unlike the FS system, the channel setting function in the conventional TV or VCR using the VS tuning system stores the tuned channel in a channel desired by the user, so there is no concept of a fixed channel, so that the set channel and the broadcasting program differ for each user. .

In addition, when a channel is automatically tuned in such a VS-type VCR, a broadcast program is arbitrarily set to each channel regardless of a user's intention. When the channel sorting function is added in such a VS-type VCR, a user wants a broadcast signal. Will be stored in the desired channel.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and the channel of the VS video cassette recorder can be easily switched by setting each channel automatically tuned to by a user in a VS VCR according to a desired order. The purpose is to provide a sorting method.

In order to achieve the above object, according to the present invention, when a key signal for realigning each channel is input in a state in which each channel is arbitrarily preset by a channel automatic tuning function and stored in a memory, the channel information menu screen may be changed. In the first step of displaying, the menu screen has respective storage areas for setting priority for each channel, and inputting priority information for each channel into each storage area on the menu screen according to a user operation. In a second step, when the completion key signal of the channel rearrangement is input, the third channel is configured to update the random set channel information stored in the memory to rearranged channel information according to the input priority information, and to turn off the channel information menu screen. Provided is a channel alignment method of a BS video cassette recorder.

1 is a block diagram of a main part of a V video cassette recorder suitable for performing a channel alignment method according to a preferred embodiment of the present invention;

2 is a view showing an example of a channel information screen displayed when aligning channels according to a preferred embodiment of the present invention;

3 is a flowchart illustrating a channel alignment process according to a preferred embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

10: key input unit 20: micom

30: memory 40: tuner

50: OSD unit 60: Image signal processing unit

70: monitor

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a main part suitable for performing a reserved channel setting method according to an exemplary embodiment of the present invention, and includes a key input unit 10, a microcomputer 20, a memory unit 30, a tuner 40, The image signal processor 50, the OSD unit 60, and the monitor 70 are included.

Referring to the drawings, the key input unit 10 is composed of key metrics and includes a plurality of keys such as channel selection keys and numeric keys according to channel selection, and a microcomputer for describing key signals corresponding to a user's key operation described later. Applied to (20), it detects and outputs a key signal carried on an infrared carrier wave from a remote controller using a remote controller that can be input at a remote location.

The microcomputer 20 controls the overall operation of the VCR. When the signal for the channel selection key and the number key according to the channel selection is input from the key input unit 10, the microcomputer 20 integrates a DC voltage obtained by integrating the PWM signal corresponding to the input channel. Output to tuner 40.

Accordingly, the tuner 40 tunes a broadcast signal received through the antenna according to a change in the DC voltage output from the microcomputer 20, and tunes the broadcast signal of the tuned channel to the microcomputer 20 and the video signal processor 50. The video signal processor 50 displays the video signal for the tuned channel and the OSD menu screen to be described later on the monitor 70 through a predetermined conversion process.

The VS tuning system includes a channel automatic tuning function. When the user presses an automatic channel tuning button provided in the key input unit 10, the microcomputer 20 gradually adjusts the DC voltage based on an applied key signal. The sequential conversion is provided to the tuner 40, and the tuner 40 automatically tunes a channel for each broadcast signal based on a tuning voltage applied step by step.

At this time, the tuned channel is stored in the memory unit 30 by the microcomputer 20 again. As described above, since the tuning system of the VS method does not have a fixed channel concept, each tuned channel is a memory unit in an arbitrary order. 30 is stored.

In the above-described process, each channel is automatically tuned and stored in the memory unit 30 in an arbitrary order so that the user inputs a channel alignment key signal to align each channel tuned in the desired order. 10, the microcomputer 20 reads each channel stored in the memory unit 30 and drives the OSD unit 60 to monitor the channel alignment menu screen as shown in FIG. 2A. 70).

Accordingly, the user rearranges the channel in the order desired by referring to each channel displayed on the monitor 70. This channel rearrangement uses the numeric keys provided in the key input unit 10 to prioritize each channel. Will be entered.

Referring to the drawings in detail, the currently set channel is set in the same order as BBC1 at 01, BBC2 at 02, and ITV at 03, as shown in the diagram, and the user sets the order of the channels. In order to change the priority, such as '02' for BBC1, '03' for BBC2, and '01' for ITV, and then inputs the channel alignment complete key button provided in the key input unit 10, the microcomputer 20 ) Reorders each currently set channel based on the priority input by the user in the order shown in FIG. 2B and stores them in the memory unit 30.

Therefore, when the user presses the channel number '02' through the key input unit 10 to switch channels in the state where each channel is rearranged by the user, the broadcast signal of 'BBC1' set in the channel '02' is tuned. And displayed on the monitor 70.

3 is a flowchart illustrating a channel alignment process according to a preferred embodiment of the present invention. A channel alignment process of a video cassette recorder according to the present invention will be described in detail with reference to the accompanying drawings.

When a channel reordering key signal for reordering each currently set channel is input from the key input unit 10 (step 103), the microcomputer 20 reads out each channel information stored in the current memory unit 30 and monitors 70. Is displayed (step 105).

At this time, when the user inputs a new priority for realigning each channel by referring to the channel information displayed on the monitor 70 (step 107), the priority of the corresponding channel is stored in the memory unit 30 by the microcomputer 20. (Step 113).

If the channel priority is not input for a predetermined time set in the above-described step 107 (step 109), the channel information screen displayed on the monitor 70 under the control of the microcomputer 20 is turned off (step 111). ), The channel setting key signal is detected.

On the other hand, after the priority of the channel input from the user is stored in step 113, the microcomputer 20 detects the presence or absence of the channel alignment completion key signal (step 115), in which case the channel alignment completion key signal is not detected. When a priority for another channel is input through the key input unit 10, the process after step 107 is repeated to store the priority input by the user in the memory unit 30.

If the channel alignment completion key signal inputted by the user through the key input unit 10 is detected in the above-described step 115, each channel is controlled based on the priority input by the user under the control of the microcomputer 20. The channel information screen rearranged and stored in the memory unit 30 and displayed on the monitor 70 is turned off (step 117).

Therefore, if a user inputs a channel number after each channel is rearranged through the above-described process, the corresponding channel is tuned in the rearranged state and the broadcast signal received from the tuner 40 is transmitted to the image signal processor 50. Display on the monitor 70.

As described above, according to the present invention, each channel can be easily recognized by rearranging and storing each channel in the order desired by the channel auto-tuning function in the VS tuning system. Accordingly, it is possible to provide convenience of using the product, and to satisfy various needs of the user.

Claims (2)

In the channel sorting method of the VS type video cassette recorder in which the channel auto tuning function is set, A first step of displaying the randomly set channel information menu screen when a key signal for rearranging each channel is input in a state where each channel is arbitrarily preset by the channel automatic tuning function and stored in a memory; The menu screen has respective storage areas for setting the priority for each channel, and inputting priority information for each channel to each storage area on the menu screen according to a user's operation; And a third step of updating the arbitrary channel information stored in the memory with the rearranged channel information according to the input priority information and turning off the channel information menu screen when the channel realignment completion key signal is input. How to sort channels in S-method video cassette recorder. The method of claim 1, wherein the second step, And turning off the channel information menu screen if the priority information for realigning the channels is not input within a predetermined time period.