KR19990015942A - Video head cleaning advisory device and method - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VCR, wherein a video head cleaning recommendation device is provided to prevent deterioration of image quality by displaying a cleaning time point of a head to a user, and further to prevent wear of the head in order to prolong life and improve convenience of use. And a video head cleaning recommendation apparatus comprising: a timer unit for checking a time from when the video apparatus starts to end an operation, and stores the use time of the video apparatus from the first head cleaning to the present time, A memory unit for storing the time checked by the memory, a reference value for determining the re-cleaning time interval of the head, and a microcomputer for controlling the entire system and controlling the entire system of the video device using time up to the present; Display notifying user of cleaner tape usage recommendation message It is configured to include portions.

Description

Video head cleaning advisory device and method

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to VCR. In particular, video head cleaning is suitable for preventing head wear and improving usability by checking a head cleaning point and outputting a recommendation message to a user. It is about a recommendation device.

In general, a VCR (Video Cassette Recorder) refers to a device that can insert a magnetic tape on which a video signal is recorded into a video deck and watch it on a TV.

The method of recording the video signal and the audio signal on the magnetic tape uses a technique called magnetic recording using the properties of magnets.

Here, magnetic recording is a technique of arranging magnets according to an electric signal on a magnetic tape. The strength of the signal is recorded as the strength of magnetization, the polarity of the signal as the direction of the magnet, and the frequency as the length of the magnet. . In other words, the head plays a role of making a micromagnet on the tape and conversely reading an array of micromagnets on the tape and converting them into an electrical signal.

The magnetic tape is coated on the surface of the magnetic tape so that the magnetic flux tends to magnetize the tape through the surface of the tape and form a micro magnet.

In this manner, the magnetic tape is lined up in sequence with the magnetized micromagnets according to the current flowing through the head, so that the signal is magnetically recorded. At the time of reproduction, the self-recorded tape is driven at the same speed as at the time of recording to generate an output voltage using the same head as at the time of recording. That is, since the leakage magnetic flux enters through the head from the micro-magnet recorded on the magnetic tape, the leakage magnetic flux changes as the tape travels, so that voltage is generated by electromagnetic induction and the recording signal is reproduced.

In such a general VCR, if a user performs recording and playback operations for too long or is left unused for too long, foreign matter may be attached to the video head. When foreign matter is generated in the video head, the head which plays an important function in recording and reproducing the video signal cannot function properly. Therefore, the screen is deteriorated. If the head is not cleaned, the head may be worn.

The wear of the head causes a deterioration of the image quality, and the user eventually sees the deterioration state of the screen and determines whether the current video head needs to be cleaned or may be cleaned later. Here, when the state of the screen becomes very poor, the user cleans the head using the video head cleaner. In other words, if the video head cleaner is inserted into the video deck and is driven for a certain time, the foreign material attached to the head is removed to compensate for the deterioration of image quality.

However, in such a conventional VCR, the cleaning time of the video head is simply determined based on the state of the image quality. However, when the quality of the image head is deteriorated, the head becomes excessively shortened and the life is shortened.

In addition, even if the deterioration of the image quality is simply a foreign matter attached to the head, if the user does not know this, there is another problem that may be cumbersome by requesting service without thinking about cleaning the head.

Accordingly, the present invention has been made to solve the above-mentioned problems, and checks the head cleaning time and displays a head cleaning recommendation message on the screen after a certain time has elapsed, thereby preventing the head from going too hard and improving the life of the head. It is an object of the present invention to provide a video head cleaning recommendation apparatus and method suitable for extending and improving the convenience of use.

1 is a block diagram of a video head cleaning recommendation apparatus according to the present invention.

2 is a flowchart illustrating a video head cleaning recommendation method of the present invention.

♣ Explanation of symbols for main part of drawing ♣

11 drive circuit portion 12 timer portion

13 memory unit 14 display unit

15: micom

A feature of the video head cleaning recommendation apparatus of the present invention for achieving the above object is a timer for checking the time from the start of the operation of the video device to the end of the operation, and the use time of the video device after the initial head cleaning to the present. A memory unit for storing and checking the time checked by the timer unit, a microcomputer for comparing the reference value defining the re-cleaning time interval of the head with the use time of video equipment stored in the memory unit and controlling the entire system; And a display unit for notifying the user of the head cleaner tape use recommendation message under the control of the microcomputer.

In addition, a feature of the video head cleaning recommendation method according to the present invention is to check the usage time of the video device up to the present after the initial head cleaning when the power of the video device is turned on, and the operation start time and the operation end time of the current video device. Checking the operation, subtracting an operation start time from an operation end time of the video device, calculating an operation time of the video device, calculating a total use time until the present time after the head cleaning, and the total use time. And comparing the cleaning time interval of the head and the reference value, determining whether the operation mode of the current video device is the recording mode if the total usage time is greater than the reference value, and recommending the use of the head cleaner tape if the recording mode is not. Characterized in that it comprises a display step.

Hereinafter, an embodiment of a video head cleaning recommendation apparatus and method of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating a video head cleaning recommendation apparatus according to the present invention. Referring to FIG. 1, a driving circuit unit 11 for driving a video device and a power supply of the video device are turned on. A timer unit 12 for checking the operation time of the video device after being turned on, a memory unit 13 for storing the operation time of the video device, i.e., the time according to recording and playback, until the present time after the head cleaning, and a schedule; In other words, the display unit 14 outputs a head cleaner tape recommendation message when the head cleaner tape is to be used, and a microcomputer 15 for controlling the entire system.

Here, when the power of the video device is turned on (ON), the timer unit 12 operates according to the control signal of the microcomputer 15 and checks the time until the operation ends.

When the operation of the video device ends, the microcomputer 15 stores the time checked by the timer unit 12 until then, and resets the timer unit 12 again.

As described above, each time the video apparatus is operated, the time is checked by using the timer unit 12, the time is stored in the memory unit 13, and the cumulative time is calculated and compared with the time interval to use the head cleaner tape.

The display unit 14 includes a display unit of a video device or a CRT of a TV.

A video head cleaning recommendation method according to the present invention configured as described above will be described with reference to the accompanying drawings.

2 is a flowchart illustrating a video head cleaning recommendation method according to the present invention.

First, when the power of the video device is turned on, the use time T1 of the video device is checked up to the present after the initial head cleaning (100).

Thereafter, it is checked whether the video device is operating in the playback mode (101), and in the playback mode, the start time (A) is stored (102). If the video device is not in the playback mode, it is checked whether it is the recording mode (103). As a result of the check, as in the reproducing mode, in the recording mode, the start time A is stored in the memory unit (102). Otherwise, in the recording mode, the current operation is maintained (104).

Subsequently, it is checked if the operation of the video device is stopped (105), and if it is stopped, the stop time (B) is stored (106).

Thereafter, the microcomputer 15 calculates how long the operation time of the video device is. That is, by subtracting the start time A from the stop time B, the operation time C of the video device can be obtained. In operation 108, the total usage time (T) of the video device from the first head cleaning to the present is calculated. That is, the total usage time T of the video apparatus is calculated using the following equation.

T = T1 + C

Where T is the total usage time of the video equipment since the first cleaning of the head, and T1 is the cumulative time of use of the video equipment since the first cleaning of the head, and C is the power of the video equipment. The elapsed time until the operation ends.

Subsequently, after the head is cleaned for the first time, the total use time T of the video equipment up to now is compared with a reference value (109). Here, the reference value refers to the time to be cleaned again after the head cleaning once, in the present invention, for example, 50 hours is set as the reference value.

If the total use time of video equipment after cleaning the head for the first time is less than the above standard value, it is recognized that it is not time to clean yet, and the current operation is performed. If the head is cleaned for the first time, If the total usage time is greater than the reference value, it is checked whether the current video device is operating in the recording mode (110). This is because recording is not possible if the head is cleaned while the video device is in the recording mode. Therefore, after the recording is finished, it is determined whether the recording has ended (111). When the recording is finished, the user is notified of the recommendation message to clean the head using the video head cleaner tape through the display unit 14 of the TV screen or the video device. (112).

As described above, the video head cleaning recommendation apparatus and method of the present invention can extend the service life by preventing the wear of the head by checking the usage time up to the present after cleaning and comparing the reference value with the reference value. It has an effect.

In addition, when the cause of deterioration of image quality is simply attached to the foreign matter of the head, the head cleaner tape can be used, there is an advantage that can be quickly responded.

Claims (5)

In a video device having a head, A timer unit for checking a time from when the video apparatus starts to end an operation; A memory unit for storing the time of use of the video device up to the present after the first head cleaning and the time checked by the timer unit; A microcomputer that compares the reference value defining the recleaning time interval of the head with the video device usage time to date stored in the memory unit and controls the entire system; And a display unit for notifying the user of the head cleaner tape use recommendation message under the control of the microcomputer. The video head cleaning recommendation apparatus according to claim 1, wherein the display unit comprises a CRT of a TV connected to a video apparatus or a display unit of a video apparatus. According to claim 1, wherein the microcomputer, if the timer checks the time until the end time after the operation of the video device starts, and stores it in the memory unit and compares the time stored in the memory unit with the reference value Head cleaning advisory device. In the head cleaning method of a video device having a head, Checking the usage time of the video device up to the present after the initial head cleaning when the video device is powered on; Checking the start time and the end time of the current video device; Calculating an operation time of the video device by subtracting the operation start time from the operation end time of the video device; Calculating the total usage time since the first time of the head cleaning, Comparing the total use time and the cleaning time interval of the head with a reference value determined; Determining whether an operation mode of a current video device is a recording mode when the total usage time is greater than a reference value; And if not in the recording mode, displaying the head cleaner tape use recommendation message. 5. The video head according to claim 4, wherein the total use time until the present time after the initial cleaning is calculated by summing the operating time of the video device after the power is turned on and the accumulated time according to the recording and playback up to the present. Cleaning recommendations.