KR0144222B1 - Method of displaying running time in a video cassette recorder - Google Patents

Abstract

The present invention relates to a driving time display method of a video cassette recorder, and more particularly, to a driving time display method of a video cassette recorder for storing and displaying the actual use time detected by integration for each integration unit time. will be.

To this end, the present invention provides a driving time display method of a video cassette recorder which displays the total running time of a deck by storing the accumulated time for each preset accumulated unit time, and comprises: a first determining whether a key for driving a video head is pressed; Step 200; A second step 210 of determining whether a predetermined integration unit time has elapsed when the key for driving the video head is increased; A third step (220) of reading previously stored integration time data if a predetermined integration unit time has elapsed; A fourth step 230 of integrating and storing a predetermined integration unit time to the read previously stored integration time data; Determining whether the accumulated time stored in the fourth step is equal to a predetermined head cleaning timing time (240); A fifth system 250 for OSD processing to display the head cleaning time if the accumulated time stored in the fourth step is equal to the preset head cleaning time; A sixth step 260 of determining whether an integration time display key is pressed when the integration unit time preset in the second step has not elapsed; If the integration time display key is pressed, the LCD may include a seventh step (270, 280) for OSD processing to display the integration time by reading the integration time stored in the fourth step, thereby eliminating the need for a separate external device. Total driving time).

Description

How to display the driving time of a video cassette recorder

1 is a block diagram of hardware to which the present invention is applied

2 is a flowchart for performing a driving time display method 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: EEPROM 40: video signal processor

50: deck portion 60: OSD unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving time display method of a video cassette recorder (hereinafter referred to as D V-CAL), and more particularly, to store and display the total driving time of a deck detected by integration for each integration unit time. A traveling time display method of a video cassette recorder.

In general, VRT uses a tape counter and a real time counter to record and play back at a point in time where the recording and playback are performed on the magnetic tape. Running Time) is displayed.

However, the actual usage time of the V-C, that is, the total running time of the deck driven during recording and playback was not known, and only the mass production time of the V-C was known by the label attached to the V-C.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to store the total travel time of the deck accumulated and detected when the predetermined integration unit time elapses in the EEPROM, so that the head cleaning time and the deck travel time are maintained. The present invention provides a method of displaying a driving time of V-Cal for displaying.

V-real driving time display method according to the present invention is a V-real driving time display method for displaying the total running time of the deck by storing the accumulated time for each preset integration unit time, the key driving the video head is pressed A second step of determining whether the predetermined integration unit time has elapsed if it has been determined; Reading the stored accumulation time data if the predetermined integration time has elapsed; A fourth step of integrating and storing the predetermined integration unit time on the read-in previously stored integration time data; Determining whether the accumulated time stored in the fourth step is equal to a predetermined head cleaning timing time; A fifth step of OSD processing to display the head cleaning time if the accumulated time stored in the fourth step is equal to the predetermined head cleaning time; A sixth step of determining whether an integration time display key is pressed if the predetermined integration unit time has not elapsed in the second step; And if the integration time display key is pressed, an OSD process for reading out the integration time stored in the fourth step to display the integration time.

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 by those skilled in the art.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a configuration diagram of hardware to which the present invention is applied, and includes a key input unit 10, a microcomputer 20, an electrically erasable programmable ROM (EEPROM) 30, an image signal processing unit 40, a deck unit 50, and an OSDQN. (On Screen Display) (60).

The key input unit 10 is generally composed of key metrics, and outputs a predetermined key signal pressed by a user. The key input unit 10 includes a recording key and a playback key for recording and playing a V-Cal. The integrated time display key which shows the deck running time for this is added.

The microcomputer 20 outputs a control signal to drive the deck unit 50 in the recording mode when the signal corresponding to the predetermined key signal applied from the key input unit 10, that is, the predetermined key signal is a signal for the recording key. If the predetermined key signal is a signal for the reproduction key, a control signal is output to drive the deck unit 50 in the reproduction mode.

In addition, as shown in the description below, if the predetermined key signal applied from the key input unit 10 is a signal for the integration time display key, the microcomputer 20 does not require a backup battery, unlike the RAM. Unlike the EPROM, an on-screen display (OSD) which reads the accumulated time data stored in the EEPROM (Electrically erasable Programmable ROM) 30 that can be rewritten, that is, the total driving time data of the deck. 60) Roll out.

At this time, the microcomputer 20 outputs a control signal for reading the travel time data of the deck stored in the EEPROM 30 when it is determined that the preset integration unit time has elapsed by an internal timer. Accordingly, the EEPROM 30 outputs the travel time data of the stored deck to the microcomputer 20, and the microcomputer 20 has a deck travel time in which the deck output from the EEPROM 30 adds the travel time data and the preset integration unit time. The microcomputer 20 outputs the data to the EEPROM 30 and stores the data. The microcomputer 20 outputs the OSD data to the OSD unit 60 when the deck driving time data stored in the EEPROM is equal to the preset head cleaning time. do.

In the specification of the present invention, those skilled in the art can easily understand that the integration unit time is a reference time for integrating the deck traveling time and storing it in the EEPROM. Could be.

When the image signal processor 40 processes the image signal output from the deck unit 50 under the control of the microcomputer 20 and outputs the image signal to the OSDQN 60, the OSD 60 controls the image under the control of the microcomputer 20. The signal processor 40 is configured to mix and output the video signal and OSD text data, that is, the total travel time data of the deck to the monitor.

2 is a flowchart for carrying out a method of displaying a driving time of V-Cal according to the present invention.

In step 200, is the key other than the stop mode key, that is, a key for setting the recording mode (Recording Mode) and the playback mode (Play, FF, REW, CUE, REV, SLOW, STILL, PAUSE) pressed? Judge.

As a result of the determination, if a key other than the stop mode key is not pressed, the operation is terminated. If a key other than the stop mode key is pressed, the process proceeds to step 210 to determine whether the predetermined integration unit time has elapsed.

As a result of the determination, if the predetermined integration unit time has elapsed, the process proceeds to step 220, and if the predetermined integration unit time has not elapsed, the process proceeds to step 260.

The microcomputer 20 proceeds to step 220 and reads the deck travel time data stored up to now from the EEPROM 30, and then proceeds to step 230 and integrates the integration unit time to the deck travel time data read in step 220. The one hour data is stored in the EEPROM 30 and the process proceeds to step 240.

In operation 240, the microcomputer 20 determines whether the preset head cleaning timing time is the same as the accumulated time stored in operation 230.

As a result of the determination, if the predetermined head cleaning timing time is the same as the accumulated time stored in step 230, the process proceeds to step 250, and when the preset head cleaning timing time and the accumulated time stored in the step 230 are not the same, the process returns.

The microcomputer 20 proceeds to step 250 and outputs OSD text data indicating the head cleaning time through the monitor and is finished.

On the other hand, the microcomputer 20 proceeds from step 210 to step 260 determines whether a predetermined key signal input from the key input unit 10 is an integration time display key. If it is determined that the predetermined key signal is not the signal for the integration time indicating key, the flow returns. If the predetermined key signal is the signal for the integration time indicating key, the flow proceeds to step 270.

In operation 270, the microcomputer 20 reads integration time data stored in the EEPROM 30 in operation 230, and proceeds to operation 280 to terminate the read integration time data after OSD processing.

As described above, the VRT driving time display method according to the present invention accumulates and stores the integrated unit time installed in the deck running time stored in the EEPROM when the predetermined integration unit time elapses, and preset head cleaning time notification. If the time is displayed on the screen, and the total running time of the accumulated deck is displayed on the screen, it is possible to determine the total running time of the V-DL deck without a separate external device.

While the invention has been shown and described with respect to certain preferred embodiments, those skilled in the art will recognize that various modifications and changes can occur without departing from the spirit and scope of the invention as set forth in the claims below.

Claims (3)

A driving time display method of a video cassette recorder displaying a total driving time of a deck by storing the accumulated time for each predetermined integration unit time, comprising: a first step (200) of determining whether a key for driving a video head is pressed; A second step (210) of determining whether the predetermined integration unit time has elapsed when a key for driving the video head is pressed; A third step (220) of reading previously stored integration time data if the predetermined integration unit time has elapsed; A fourth step (230) of integrating and storing the predetermined integration unit time to the read previously stored integration time data; Determining whether the accumulated time stored in the fourth step is equal to a predetermined head cleaning timing time (240); A fifth step (250) of OSD processing to display the head cleaning time when the accumulated time stored in the fourth step is equal to the predetermined head cleaning time; A sixth step 260 of determining whether an integration time display key is pressed if the predetermined integration unit time has not elapsed in the second step; And a seventh step (270, 280) of OSD processing to read out the integration time stored in the fourth step and display the integration time when the integration time display key is pressed. The method of claim 1, wherein the total travel time of the deck is stored in an EEPROM (30). The driving time display method of a video cassette recorder according to claim 1, wherein the key for driving the video head of the first step is a key other than a stop mode key.