KR19990056424A - Driving Method in the Outage and Restoration of Video Cassette Recorder - Google Patents

Abstract

The present invention relates to a method of driving a power failure and a power failure recovery of a video cassette recorder. The present invention relates to a method for storing power failure information during a power failure during scheduled recording of a video cassette recorder. It was configured to perform quickly.

That is, the present invention stores reservation recording information during power failure, and does not change the deck to an initial state by detecting the remaining recording time during power failure recovery, so that the remaining scheduled recording can be quickly performed after power failure recovery. .

Description

Driving method of power failure and recovery of power failure of video cassette recorder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video cassette recorder (hereinafter abbreviated as VSD), and more particularly, to a driving method during blackout and recovery of blackout during scheduled recording of VSI.

V-Cal is a device that records and outputs video and audio signals on video tape or reads and outputs video and audio signals recorded on the video tape by selectively magnetizing the video tape which is magnetic material by using the magnetic head mounted on the rotating head drum. to be.

These VRs have a number of features, such as screen navigation, scheduled recording, stereo and blackout compensation. Among these, the power failure compensation function refers to a function of storing the BC mode at the time of power failure in a separate memory unit, for example, an EEPROM, and restoring the VCA to the state before the power failure when the power failure occurs during the operation.

In addition, the conventional power failure compensation function performs an operation of unloading a video tape loaded in a VCD deck (a process of seating a video tape on a head drum in a deck) without performing recording immediately upon power failure recovery. I had to.

In other words, there is a problem in that unnecessary time is required to perform recording after power failure recovery.

Accordingly, the present invention has been made to solve such a problem, and stores the reservation information in the event of a power failure during scheduled recording of the BC-R, and performs a power failure of the V-CAL to quickly perform the remaining recording according to the position of the cam switch after the power failure is restored. And to provide a driving method in the restoration of power failure.

That is, the present invention provides a method of driving a power failure and recovery of a power failure for scheduled recording, comprising: determining whether the power failure is performed; Storing the recording information according to the scheduled recording and performing a power failure mode when a power failure occurs; Determining whether a power failure has been restored while performing the power failure mode; Reading out the recording information and determining whether there is a reserved recording remaining time of the recording information when the power failure is restored; Determining whether the VR is in the recording standby state when the reserved recording remaining time exists; When the VR is in the recording standby state, the method of driving the BC-AL according to the power failure and recovery of the power failure, comprising the step of recording and driving the VR to the remaining time.

1 is a block diagram of a video cassette recorder for carrying out the method according to the invention;

2 is a flowchart of a driving process during power failure and power failure recovery of a video cassette recorder according to the present invention;

<Explanation of symbols for main parts of the drawings>

10: key input unit 20: micom

30 memory unit 40 power failure determination unit

50: Deck 52: Cam Switch

The above objects and various advantages of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram of a VRC for carrying out the method according to the present invention. The key input unit 10, the microcomputer 20, the memory unit 30, the power failure determination unit 40, the deck 50, and the cam are shown. Switch 52.

As shown, the key input unit 10 includes a plurality of function keys (not shown) for controlling the operation of the V-Cal, such as a power on / off key, and corresponds to a key that is input, that is, pressed by a user. And apply the key signal to the microcomputer 20.

The microcomputer 20 according to the present invention selectively drives V-Cal according to the key signal from the key input unit 10 described above.

In addition, the microcomputer 20 is provided with a memory unit 30, and the memory unit 30 stores reservation information data (reservation start time, reservation end time, etc.) in a reserved recording state when the VCA is out of power. Such reservation information data is read out by the microcomputer 20.

At this time, the power failure determination unit 40 is connected to the microcomputer 20 to determine the power failure described above. That is, the power failure determination unit 40 determines the supply power from a power supply (not shown) and applies a power failure signal to the microcomputer 20 when the power is not supplied, and outputs a power failure recovery signal when the power is supplied. 20).

On the other hand, the deck 50 includes a capstan motor and a reel motor responsible for driving the video tape, and a video and audio head for recording and reading the video and audio signals, respectively. And to record the video signal of the recording processing system on the video tape under control.

In addition, a cam switch 52 is provided in the deck 50 as illustrated, and the microcomputer 20 may determine the driving mode of the deck 50 according to the switching state of the cam switch 52. That is, in the case of power failure, the driving mode of the current deck 50 is stored in the memory unit 30 as described above, and in the case of restoring the power failure, it is determined whether recording is possible according to the switching state of the cam switch 52. The detailed operation principle of the cam switch 52 can be easily understood by those skilled in the art, and a detailed description thereof is omitted.

Hereinafter, the above-described configuration will be described in detail with reference to the flowchart of FIG. 2 attached with a driving process during power failure and recovery of power failure according to the present invention.

Prior to the description, the flow chart assumes that the VRC is an operation process occurring at the time of reserved recording driving.

First, in step S100, the microcomputer 20 determines whether a power failure signal is generated from the power failure determination unit 40.

As a result of the determination in step S100, when the power failure signal is generated, the microcomputer 20 proceeds to step S102, and according to the switching state of the cam switch 52, the current driving mode of the deck 50, that is, reserved recording information (recording). Start time and end time) are temporarily stored in the memory unit 30, and a power failure mode is performed (S104).

During the power failure mode process, the microcomputer 20 determines whether a power failure recovery signal is applied from the power failure determination unit 40 (S106), and when the power failure recovery signal is applied, releases the power failure mode and is stored in the memory unit 30. After reading the reserved recording information (S108), the flow proceeds to step S110.

In step S110, the microcomputer 20 determines whether there is a remaining recording time in the read reservation recording information. As a result of the determination, if the remaining time does not exist, the process is terminated, and if the remaining time exists, the process proceeds to step S112.

In step S112, the microcomputer 20 determines whether the current deck 50 is in recording standby state according to the switching state of the cam switch 52.

As a result of the determination in step S112, if it is not in the recording standby state, the microcomputer 20 proceeds to step S114 to drive the cam switch 52 until the recording standby state.

If the recording standby state, the microcomputer 20 proceeds to step S116 to drive the deck 50 in the recording mode for the remaining time described above.

That is, the present invention stores reserved recording information in the event of a power failure, and performs the remaining reserved recording immediately without changing the deck 50 to the initialization state by detecting the remaining recording time when the power failure is restored.

As described above, there is an effect that the remaining reserved recording can be performed quickly.

Claims (3)

A driving method for power failure and power failure recovery of a video cassette recorder for performing scheduled recording, Determining whether the power is out of operation (S100); Storing the recording information according to the scheduled recording and performing a power failure mode when the power failure occurs (S102) (S104); Determining whether a power failure is restored during the power failure mode (S106); Reading the recording information and determining whether a reserved recording remaining time of the recording information exists (S108) (S110) when the power failure is restored; Determining whether the video cassette recorder is in a recording standby state when the reserved recording remaining time exists (S112); And driving (S116) the video cassette recorder for recording for the remaining time when the video cassette recorder is in a recording standby state. 2. The driving method according to claim 1, wherein the recording standby state is a position state when the cam switch in the video cassette recorder is in a recording mode. [4] The blackout and blackout of the videocassette recorder according to claim 1 or 2, further comprising the step (S114) of driving the cam switch to a recording mode position when the video cassette recorder is not in a recording standby state. How to drive.