KR100529135B1 - Self diagnosis method in a single unit timelapse image recording and reproducing apparatus - Google Patents

Abstract

The present invention integrates a mux unit for multiplexing video signals input from a plurality of cameras, a time-lapse VCR unit for recording a video signal multiplexed by the mux, and a monitor unit for reproducing the recorded video signal on a video screen. A self-diagnostic method in a time-lapse video recording / reproducing apparatus, comprising: a first step of checking drum motor FG and capstan motor FG in a time-lapse VCR unit in response to input of a self-diagnostic key signal; and total recording of the time-lapse VCR unit; Checking the time and if the total recording time checked exceeds the preset time, the second step of displaying the replacement message of the drum motor and the capstan motor through the monitor unit, and tapping / video tape inserted into the time-lapse VCR unit. The third step to determine the presence of a message and to display a corresponding message if the tab does not exist; A fourth step of checking the VCR recording signal V-sync of the switch portion and the monitor signal V-sync and displaying a mux error message when each of the checked V-syncs exceeds a preset value; and H- provided from the monitor portion. Integral time lapse if the conditions of steps 5 to 5 are checked if the drive / V-drive signal is checked and if the checked drive signal exceeds the preset frequency band and a monitor error message is displayed. And a sixth step of maintaining the video recording and reproducing apparatus in the standby state. According to the present invention, it is possible to quickly and accurately check the abnormal state of the device in the integrated time-lapse video recording / playback apparatus, thereby improving the user satisfaction.

Description

SELF DIAGNOSIS METHOD IN A SINGLE UNIT TIMELAPSE IMAGE RECORDING AND REPRODUCING APPARATUS}

The present invention relates to an integrated time-lapse video recording and playback device (Timelapse VCR), in particular to diagnose the abnormality of each function in the time-lapse video recording and playback device integrating a time-lapse VCR, MUX (Multixer), a monitor The present invention relates to a self-diagnostic method in an integrated time-lapse video recording and reproducing apparatus.

In general, the time-lapse video recording / reproducing apparatus does not record the entire video screen transmitted from an external camera, but instead inputs a plurality of cameras at every predetermined interval of the real-time video screens transmitted while repeating driving and stopping of the recording tape. By multiplexing and recording video signals in field or frame units, a device is implemented to allow simultaneous recording and long-time surveillance recording of video signals input from multiple cameras using a single recording tape. As it is installed in major areas requiring security, it is widely used as a video recording / reproducing device for long-term surveillance observation to prevent theft.

However, such a time-lapse recording / playback apparatus stores a video signal multiplexed from the mux and a mux that multiplexes / demultiplexes a video signal from an external camera in a storage device such as a recording tape or a hard disk, and the corresponding time of the playback time required. The time-lapse VCR that allows video signals to be played by mux and the monitor that displays them on a video screen are separately installed in each set, and the price increases, and there is a complicated problem in the installation and connection setup between devices.

In order to solve this problem, as a conventional method, a mux for multiplexing video signals input from multiple cameras, a time-lapse VCR for storing them in a memory, and a monitor for reproducing a recorded video signal as an image are integrated into one. A time-lapse video recording / playback apparatus has been proposed.

However, in spite of the advantage that the integrated time-lapse video recording / reproducing device has been eliminated from wiring, there are a number of incidental problems caused by combining into one function.

In other words, the integration of the three functions into one, making the internal circuitry complicated, making it difficult for users to check the functions one by one.

The present invention has been implemented to solve the problems of the prior art, by providing a separate self-diagnostic key, when the user presses the self-diagnostic key, whether or not the function of the Time Lapse VCR, replacement of consumables, abnormal function of the mux It is an object of the present invention to provide a self-diagnosis method in an integrated time-lapse video recording and reproducing apparatus which self-diagnoses the presence or absence of a malfunction of a monitor and informs a user of the result.

According to a preferred embodiment of the present invention for achieving the above object, a mux unit for multiplexing video signals input from a plurality of cameras, a time-lapse VCR unit for recording a video signal multiplexed by the mux unit, A self-diagnostic method in an integrated time-lapse video recording / reproducing apparatus in which a monitor unit for reproducing a recorded video signal as a video screen is integrated into a single unit, wherein the drum motor FG and the capstan motor of the time-lapse VCR unit respond to input of a self-diagnostic key signal. A first step of checking the FG, and checking the total recording time of the time-lapse VCR unit and displaying replacement guidance texts of the drum motor and the capstan motor if the total recording time checked exceeds the preset time. Step 2, determine whether or not the tap of the video tape inserted into the time-lapse VCR unit and tap If there is not present, the third step of displaying the corresponding guidance message, and if the VCR recording signal V-sync and the monitor signal V-sync of the MUX unit is checked and each of the checked V-sync exceeds a preset value, a mux error A fourth step of displaying a message; a fifth step of checking an H-drive / V-drive signal provided from the monitor unit and displaying a monitor error message if the checked drive signal exceeds a preset frequency band; And a sixth step of maintaining the integrated time-lapse video recording and reproducing apparatus in a standby state when the conditions of the second to fifth steps are not satisfied. To provide.

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

FIG. 1 illustrates a detailed block diagram of a self-diagnosis system of an integrated time-lapse image recording / reproducing apparatus according to an exemplary embodiment of the present invention. Hereinafter, the operation of each part of the self-diagnosis system of the integrated time-lapse video recording / playback apparatus will be described in detail with reference to FIG. 1.

The key input unit 100 is a key input means for providing a key signal for the overall driving, for example, the reproduction driving of the time-lapse VCR unit 400, and generates a key signal corresponding to the user's key button input action. The key input unit 100 is provided with a "self-diagnostic key (not shown)" according to the present embodiment, and checks for abnormality of the integrated time-lapse video recording and reproducing apparatus as the self-diagnostic key is pressed by the user. To execute self-diagnostic mode.

The camera group 200 is installed at various external locations to perform security monitoring, for example, in an apartment parking lot, in an elevator, in a company office, etc., and inputs image information of a corresponding region. )

The mux unit 300 is connected to cameras installed at a specific regional location designated by the operator, and multiplexes video signals from multiple cameras into video frames for each camera, and applies them to the time-lapse VCR unit 400. The multiplexed video signal read and applied from the time-lapse VCR unit 400 is demultiplexed and reproduced by the CRT monitor 52 according to an operator's reproduction request.

The time-lapse VCR unit 400 may be largely divided into the control unit 42 and the deck unit 44, and the control unit 42 captures images from the external surveillance camera group 200 that are multiplexed and input from the mux unit 300. The stored video signal to a storage device provided therein, such as a hard disk, and when there is a playback request from the system operator through the key input unit 100, the video signal of the playback time requested is read from the storage device and the mux unit is read. To 300. Accordingly, the mux unit 300 demultiplexes the multiplexed video signal applied from the time-lapse VCR unit 400 to display an image photographed for each camera at the corresponding time through the screen display unit 500.

At this time, the drum motor / capstan motor FG from the deck unit 44 is applied to the control unit 42, and the VCR recording signal V-sink from the mux unit 300 is applied to the deck unit 44, respectively. These values are used as check data for self-diagnosis in the time-lapse image recording and reproducing apparatus, as described later.

The screen display unit 500 includes a CRT monitor 52 for displaying an image captured by the camera group 200, an FBT & CRT driver 54 for driving the CRT monitor 52, and a time-lapse VCR unit 400. The FBT & CRT driver 54 is controlled according to a playback command from the controller 42 so that the video signal from the camera group 200 applied from the MUX unit 300 is displayed on the CRT monitor 52. The monitor control unit 56 is configured to control the surveillance video captured on a multi-screen or a single screen for each camera according to the playback mode set by the operator for the demultiplexed camera-specific video signal applied from the mux unit 300. Display.

The recording safety switch 600 is a device for determining the presence or absence of a tap of a video tape inserted into the time-lapse VCR unit 400. The signal according to the on / off operation of the switch 600 is controlled by the controller 42. As applied to, the controller 42 determines whether a recording tap exists on the video tape.

Hereinafter, the self-diagnostic process in the integrated time-lapse video recording and reproducing apparatus according to the preferred embodiment of the present invention will be described in detail with reference to the flowchart of FIG. 2.

First, in step S300, the controller 42 determines whether a self-diagnostic key signal is input through the key input unit 100, and when the self-diagnostic key signal is input, proceeds to step S302 to execute the self-diagnostic mode. .

In step S302, the control unit 42 checks the drum motor / capstan motor FG provided from the deck unit 44. That is, the number of FG pulses fed back after driving 30Hz with drum PWM and capstan PWM is checked.

In addition, in step S304, the controller 42 checks the total recording time of the time-lapse VCR unit 400. This recording time data can be recorded in a memory means (not shown). When the self-diagnosis mode is set, the controller 42 checks the recorded recording time data.

Then, in step S306, the controller 42 determines whether the total recording time exceeds a predetermined time, for example, 8000 hours. If the time exceeds 8000 hours, the controller 42 proceeds to step S308 and displays the replacement guidance message between the drum motor and the capstan motor. Display through the display unit 500.

In addition, in step S310, the controller 42 determines whether or not there is a tap of the inserted video tape according to the switching signal from the recording safety switch 600, and outputs a guide message when it is determined that the tap does not exist (S312). (S314).

Meanwhile, the control unit 42 includes the VCR recording signal V-sync of the mux unit 300 provided through the deck unit 44 as in step S316, and the mux unit 300 provided through the monitor control unit 56. Check the monitor signal V-sync.

In step S318, it is determined whether these V-sinks exceed a reference value, for example, 16.67 msec, and if the reference value is exceeded, the process proceeds to step S320 to display a mux error message to the outside.

In step S322, the controller 42 checks the H-drive / V-drive signals provided from the monitor controller 56 and determines whether these signals exceed a reference value, for example, 15 KHz (S324). At this time, the V-drive signal is provided to the controller 42 after the signal is extracted by the comparator. The waveforms of these H-drive signals and V-drive signals are as shown in FIG.

As a result of the determination in step S324, if the reference value is exceeded, the process proceeds to step S326 to display the monitor error message to the outside.

On the other hand, as a result of the determination in the above-described steps (S306, S312, S318, S324), if the predetermined value does not deviate or there is no abnormality, the process proceeds to step S328 to maintain the integrated time-lapse video recording and playback apparatus in the standby state. .

According to the present invention, it is possible to quickly and accurately check the abnormal state of the device in the integrated time-lapse video recording / playback apparatus, thereby improving the user satisfaction.

As mentioned above, although this invention was concretely demonstrated based on the Example, this invention is not limited to this Example, Of course, various changes are possible within the range which does not deviate from the summary.

1 is a block diagram of a self-diagnosis system of an integrated time-lapse video recording / playback apparatus according to an embodiment of the present invention;

2 is a flowchart illustrating a self-diagnosis process performed in an integrated time-lapse video recording / reproducing apparatus according to an embodiment of the present invention;

3 is an output waveform diagram of an H-drive signal and a V-drive signal output from the monitor controller of FIG. 1.

<Explanation of symbols for the main parts of the drawings>

100: key input unit 200: camera group

300: mux part 400: time-lapse VCR part

500: screen display unit 600: recording safety switch

Claims (2)

delete An integrated unit which integrates a mux unit for multiplexing video signals input from a plurality of cameras, a time-lapse VCR unit for recording a video signal multiplexed by the mux unit, and a monitor unit for reproducing the recorded video signal on a video screen. As a self-diagnosis method in a time-lapse video recording / playback apparatus, A first step of checking the drum motor FG and the capstan motor FG of the time-lapse VCR unit in response to the input of the self-diagnostic key signal; A second step of checking the total recording time of the time-lapse VCR unit and displaying replacement guidance texts of the drum motor and the capstan motor if the total recording time checked exceeds the preset time; A third step of determining whether or not there is a tap of a video tape inserted into the time-lapse VCR unit, and if a tap does not exist, displaying a corresponding guide message; A fourth step of checking the VCR recording signal V-sync and the monitor signal V-sync of the mux unit and displaying a mux error message if each of the checked V-syncs exceeds a preset value; A fifth step of checking the H-drive / V-drive signal provided from the monitor unit and displaying a monitor error message if the checked drive signal exceeds a preset frequency band; A sixth step of maintaining the integrated time-lapse video recording and reproducing apparatus in a standby state when the conditions of the second to fifth steps are not satisfied; Self-diagnostic method in the integrated time-lapse video recording / playback device comprising a.