KR19980078935A - Drum replacement time alarm system of VSI copier - Google Patents

Abstract

The present invention stores the experimental drum warranty time in a memory that stores data even at power-off, and accumulates and compares the absolute time that the drum is used so far, and provides the drum replacement information about the drum replacement information. Regarding the drum replacement time alarm system of the copier.

To this end, the present invention includes a control pulse amplifier for amplifying a predetermined level so that the microprocessor can read the control pulse recorded or reproduced in the control head; A memory unit for storing the drum guarantee time and the absolute use time so far known experimentally and storing the contents without erasing the stored contents even at power-off; Read and compare the time data stored in the memory unit and check the control pulse when the operation mode in which the actual drum is used progresses, accumulating and counting the absolute usage time data of the memory unit and exceeding the upper limit. A microprocessor to drive alarms if; And an alarm display unit which outputs a message indicating a drum replacement time by operating according to a control signal of the microprocessor.

Description

Drum replacement time alarm system of VSI copier

The present invention relates to an alarm system capable of accurately determining the drum replacement time of a VSI copier, and to notify the outside. More specifically, the drum warranty time is experimentally known in advance, and the absolute drum use time is sensed. When the drum warranty time is reached, an alarm is displayed to indicate when it is time to replace the drum, allowing the data management to accurately manage the drum replacement time. Replacement timing alarm system.

Conventional VDS copiers adopt a plurality of deck units in one master VSI, and each of the deck units separates a luminance signal and a color signal from an input video signal as shown in FIG. 1 to perform low pass filtering and frequency modulation on the luminance signal. And the high frequency conversion, and then the color signal is subjected to the band filtering, the low frequency conversion and the low frequency filtering, and then the video circuit unit 30 for synthesizing the two signals and outputting the video recording signal, and the video recording signal of the video circuit unit. A pre-amplification unit 20 for amplifying to a predetermined level, a control pulse amplifying unit 40 for amplifying a predetermined level of a control pulse which is a reference when reproducing a video signal, and a video recording signal amplified by the preamplifying unit. In the video head 10A and the control pulse amplifier for recording or reproducing And a control head (10B) for recording or reproducing the control pulse to the tape.

In addition, the microprocessor 70 may control the operation of the entire system according to the determination result by checking the key input state or the outputs of the sensors, and the key may be input from an external user through a key matrix. The key input unit 60 is configured to control the operation of the microprocessor, and the deck drive unit 50 is provided to operate the deck mechanism related to recording and playback.

By the way, in the deck unit having the above configuration, if the drum is used excessively by using VSI copier, the tape copied to the aged drum (head) cannot expect high quality.

Therefore, some of conventional VD copiers have a means for detecting an old state of the drum, and in particular, a means for determining the drum replacement time by using a mercury timer so that an external manager can check the drum replacement time arbitrarily. .

That is, the mercury timer, which is used as a means for determining the drum replacement timing, generally measures the drum replacement timing using current and time, and displays it on a scale. In this case, the mercury timer setting is calculated. do.

Therefore, the drum replacement time obtained by the means for determining the drum replacement time of the VSI copier using the mercury timer has a significant error from the absolute time using the actual drum, and thus, the accuracy of the drum replacement is poor. Not only is it set up with accurate field data, but it is set up computationally, and the error rate of the mercury timer itself is significant, which makes it difficult for a company to make tapes using VSI copiers. There was a problem.

Therefore, the present invention has been made to solve the above problems, and the present invention includes a memory means which does not erase the contents even when the power is turned off in each deck unit of the VSI copier, and stores the drum guarantee time known experimentally. Accurate data about actual drum replacement time in the tape making field by allowing the microprocessor to accumulate the absolute time the actual drum is used in the deck unit and to inform drum replacement information when the drum warranty time is reached. The aim is to provide a drum replacement time alarm system for VSI copiers that can be managed to improve the efficiency of tape production.

In order to achieve the above object, the present invention provides a control pulse amplifying unit which amplifies a predetermined level so that a microprocessor can read a control pulse recorded or reproduced in a control head; A memory unit for storing the drum guarantee time and the absolute use time so far known experimentally and storing the contents without erasing the stored contents even at power-off; Read and compare the time data stored in the memory unit and check the control pulse when the operation mode in which the actual drum is used progresses, accumulating and counting the absolute usage time data of the memory unit and exceeding the upper limit. A microprocessor to drive alarms if; And a warning display unit for outputting a message indicating a drum replacement time by operating in accordance with a control signal of the microprocessor.

Figure 1 is a block diagram showing a part of the configuration of the conventional BD copier

Figure 2 is a block diagram showing a part of the configuration of the BCial copier according to an embodiment of the present invention

3 is an operation flowchart for explaining a process of the drum replacement time warning system of the BC Copier according to the present invention;

* Explanation of symbols for the main parts of the drawings *

10A: video head 10B: control head

20: preamplifier 30: video circuit

40: control pulse amplifying unit 50: deck driving unit

60: key input unit 70, 70A: microprocessor

80: memory part (EPROM) 90: alarm display part

91 buzzer driving unit 92 light emitting unit

Hereinafter, the configuration of the drum replacement time alarm system of the VSI copier according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram showing only a part of the configuration of a plurality of deck unit having a BCial copier according to an embodiment of the present invention.

As shown in the drawing, each deck unit includes a video circuit unit 30 for separately processing a luminance signal and a color signal from an input video signal, recombining the same, and outputting a video recording signal, and a transposition for amplifying the video recording signal at the video circuit unit to a predetermined level. Amplifying section 20, a control pulse amplifying section 40 for amplifying a predetermined level of a control pulse as a reference for reproducing a video signal, and a video recording or reproducing a video recording signal amplified by the preamplifying section on a tape The head 10A and the control head 10B for recording or reproducing the control pulse amplified by the control pulse amplifying unit on a tape are constituted in the same manner as in the conventional case.

In addition, a key input unit 60 that enables key input from an external user through a key matrix or the like and controls the operation of the microprocessor, and a deck drive unit 50 for operating a deck mechanism related to recording or playback are provided. It is configured to include.

In addition, VSI copier according to the present invention is composed of memory elements such as EPROM, which does not delete data even when the power plug is unplugged, so that the drum guarantee time and the absolute use time that are known experimentally can be stored. The memory unit 80 stores the stored contents without erasing the memory even when the power is turned off, and determines the operation state of each part by checking the key input state or the outputs of the sensors, and controls the operation of the entire system according to the determination result. In particular, the time data stored in the memory unit is read and compared, and when the operation mode using the actual drum progresses, the control pulse is counted and coded as hours / minutes / second to accumulate in the absolute usage time data of the memory unit to the present time. If the used time exceeds the upper limit, it will trigger an alarm and stop using the drum or turn off the power. The microprocessor 70A stops counting and writes the count value to the pyramid, and intermittent buzzer sound, light-emitting diode flickering operation, or any other method in accordance with the control signal of the microprocessor. The buzzer driving unit 91 and the light emitting unit 92 may be configured to include an alarm display unit 90 which outputs a message indicating the drum replacement time to the outside through a buzzer sound or a light emitting diode.

FIG. 3 is an operation flowchart for explaining a process of a drum replacement time alarm system of a BC copier according to the present invention, and schematically shows an alarm control program executed by a microprocessor of each deck unit.

As shown in the drawing, the first step is a step performed when the power of the BD copier is turned on, and reads the time data (drum guarantee time and absolute use time data) stored in the memory (S111, S112), and In step S113, it is determined whether the absolute time used so far exceeds the drum guarantee time.

The second step is performed when the time used so far does not exceed the drum guarantee time as a result of the determination of the first step, and checks whether the playback mode or the recording mode is used (S114, S115) and the actual drum as a result of the check. When it is determined that the used reproducing operation or the recording operation is in progress, the control pulse is checked to accumulate count the absolute drum time read from the memory, and to return to the first step (S116).

In the third step, when the absolute time used up to the present time exceeds the drum guarantee time as a result of the determination of the first or second step, the alarm is driven and terminated for a predetermined time (S120, S121).

In addition, the alarm control program of the microprocessor stops counting the absolute time and updates and stores the absolute time counted to the present time in the memory when the drum use is stopped after the operation mode in which the actual drum is used is performed in the second step (S117). It is also preferable to include the step (S118, S119).

The operation of the present invention as described above is as follows.

First, when the VSI copier is powered on, the microprocessor 70A reads the time data (drum guarantee time and absolute use time data) stored in the memory unit (S112), and compares the absolute time used to date with the drum guarantee time. The first step of determining whether or not to exceed (S113) is performed.

As a result of the determination at this time, if the time used so far does not exceed the drum guarantee time (N branch of S113), the microprocessor 70A checks whether the deck mechanism is in the playback mode (S114) or the recording mode (S115). It judges whether or not the actual drum is used, and if the deck mechanism is operating in the playback mode or the recording mode (Y branch of S114 or Y branch of S115), the control pulse is counted and coded in hours / minutes / seconds. After the cumulative count (S116) to the absolute drum time, a second step of returning to the time data comparison step of the first step is performed.

At this time, if the use of the drum is stopped after the operation mode in which the actual drum is used in the second step (Y quarter in S117), the absolute time count is stopped (S118) and the absolute time counted to date is updated and stored in the memory. (S119) is carried out to end.

If the absolute time used up to the present time exceeds the drum guarantee time (Y quarter in S113) as a result of the determination of the first or second step, the alarm is driven while counting a predetermined time (can be arbitrarily designated) (S120). When the time elapses, the operation can be terminated. On the other hand, if any key operation occurs while the alarm is being driven, the operation can be terminated.

According to the present invention as described above, each deck unit of the BC Copier has a memory means that the memory contents are not erased even when the power is turned off. By counting and allowing drum replacement information to be notified when the drum warranty time expires, it is possible to perform drum replacement with data that most closely matches the actual drum replacement time of VSI Copier during tape production. There is usefulness that can be improved.

Claims (5)

A control pulse amplifier for amplifying a predetermined level so that the microprocessor can read the control pulse recorded or reproduced by the control head; A memory unit for storing the drum guarantee time and the absolute use time so far known experimentally and storing the contents without erasing the stored contents even at power-off; Read and compare the time data stored in the memory unit and check the control pulse when the operation mode in which the actual drum is used progresses, accumulating and counting the absolute usage time data of the memory unit and exceeding the upper limit. A microprocessor to drive alarms if; And a warning display unit for outputting a message indicating a drum replacement time by operating in accordance with a control signal of the microprocessor. 2. The drum replacement time alarm system of a BD copier according to claim 1, wherein the alarm display unit comprises a buzzer driver (91) which operates in accordance with a control signal of the microprocessor to generate intermittent buzzer sounds. The drum replacement time alarm system of a BC copier according to claim 1, wherein the alarm display unit comprises a light emitting unit (92) which operates in accordance with a control signal of the microprocessor to flash a light emitting diode. The method of claim 1, wherein the microprocessor comprises: a first step of, when the power is turned on, reading and comparing the drum warranty time and absolute usage time data stored in the memory to determine whether the time used up to now exceeds the drum warranty time; As a result of the determination in the first step, if the time used up to now does not exceed the drum guarantee time, it is checked whether the operation mode in which the actual drum is used is in progress and accumulatively counts the absolute usage time data of the memory, and the upper limit of the time the drum has been used so far. Re-determining whether or not exceeding; And a series of alarm control programs comprising a third step of driving and terminating the alarm for a predetermined time when the absolute time used so far exceeds the drum guarantee time as a result of the determination of the first step or the second step. Alarm system when the drum in the copier is replaced. The method of claim 4, wherein the microprocessor stops counting the absolute time and updates and stores the absolute time counted in the memory if the drum is stopped after the operation mode in which the actual drum is used is performed in the second step. A drum replacement timing alarm system of a BC Copier, characterized by having an alarm control program comprising.