JPH11232839A - Monitoring and recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitoring and recording device wherein no monitoring vacant time exists during long-time recording performed by automatically replacing a recording medium. SOLUTION: When the recording medium of a first recording means 2 is automatically replaced by an automatic changer 6 to record a monitoring video A for a long time, the monitoring video A is recorded by a second recording means 8 during replacing. Thus, the reproduction of the recording medium recorded by the first recording means 2 is changed to the recording state of the recording medium recorded by the second recording means 8, and thereby a better monitoring state than conventionally is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring and recording apparatus for performing a long-term monitoring and recording while exchanging a recording medium.

[0002]

2. Description of the Related Art As shown in FIG. 4, a surveillance place is photographed by a video camera 1 for the purpose of crime prevention or the like, and a surveillance image A photographed by the video camera 1 is a time-lapse video tape recorder (hereinafter referred to as a time-lapse VTR). A monitoring recording device that records data in step 2 is generally used.

[0003] The time-lapse VTR 2 performs intermittent recording at predetermined time intervals on a set tape cassette 3 to realize long-time recording without exchanging the tape cassette. Reference numeral 4 denotes a controller which supplies the monitor video A being recorded to the monitor display 5 and supplies a signal obtained by reproducing a recorded tape cassette by the time lapse VTR 2 to the display 5.

Conventionally, there is a monitoring and recording device equipped with an autochanger 6 as shown in FIG. 5 so that a supervisor can perform monitoring and recording for a longer time without having to replace a tape cassette. .

The time lapse VTR 2 and the autochanger 6 are operated by the controller 4 as follows. FIG. 6 shows a flowchart of the controller 4. When the magnetic tape of the tape cassette 3a being set in the time lapse VTR 2 and the recording is completed to the end, the time lapse VTR 2 outputs an end detection signal B to the controller 4.

The controller 4 detects in step S1 whether or not the end detection signal B has been generated. Until the end detection signal B is detected, the controller 4 executes step S2 to set the tape cassette set by the time lapse VTR 2, ie, the tape cassette. Then, the monitoring video A is intermittently recorded on the set tape cassette 3a.

When the generation of the termination detection signal B is detected in step S1, step S3 is executed to execute the time lapse VTR2.
To rewind the magnetic tape. In step S4, it is determined whether or not the rewind completion signal C is generated from the time lapse VTR 2. The routine of steps S3 and S4 is repeatedly executed until the rewind completion signal C is detected in step S4. When the return completion signal C is detected, step S5 is executed.

In step S5, an instruction is given to the autochanger 6 to replace the tape cassette. Upon detecting the tape cassette replacement instruction, the autochanger 6 takes out the tape cassette 3a of the time lapse VTR 2, stores it in the storage location 7a, takes out the unrecorded tape cassette 3b stocked in the storage location 7b, and takes out the time lapse VT.
Set to R2.

In step S6, it is checked whether or not the replacement of the tape cassette in the time lapse VTR 2 has been completed. When the completion of the replacement of the tape cassette is detected in step S6, the routine exits from the routine shown in FIG. It is repeatedly executed at specified time intervals to execute intermittent recording of the monitoring image A by the tape cassette 3b in the time lapse VTR2.

In this manner, each time the rewind completion signal C is generated in the time lapse VTR 2, the automatic change of the tape cassettes 3a, 3b, 3c... Is running.

[0011]

As described above, by using the automatic changer 6, long-time recording can be realized without manual replacement of the tape cassette. However, the rewind period of the used tape cassette and the auto changer 2
However, there is a monitoring blank time in which the recording is interrupted for a short time during the operation of exchanging tape cassettes.

An object of the present invention is to provide a monitoring and recording apparatus in which the above-mentioned monitoring blank time does not exist when a recording medium is automatically replaced and recording is performed for a long time.

[0013]

The recording monitoring apparatus of the present invention is provided with a second recording means separately from the first recording means for recording a monitoring video on a recording medium, and monitors the monitoring video while the recording medium is being switched. It is characterized by recording by the second recording means.

According to the present invention, when a recording medium is automatically replaced and recording is performed for a long time, monitoring recording without a monitoring blank time can be realized.

[0015]

1 is a block diagram showing a configuration of a monitoring and recording apparatus according to a first embodiment of the present invention;
First recording means for recording a monitoring image on a recording medium, exchange means for switching a recording medium on which recording is performed in the first recording means, and second recording means for recording a surveillance image while the recording medium is being switched by the exchange means. 2 recording means.

According to a second aspect of the present invention, there is provided a monitoring and recording apparatus.
Wherein a reproduction control unit is provided for switching from reproduction of the recording medium recorded by the first recording means to reproduction of the recording medium recorded by the second recording means.

According to a third aspect of the present invention, there is provided a monitoring and recording apparatus.
Wherein the first recording means comprises a time-lapse video recorder for recording the recording time together with the monitoring video, and the reproduction control section controls the recording time written to the recording end of the magnetic tape being reproduced by the first recording means. And a corresponding portion of the recording medium of the second recording means is reproduced.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
It will be described based on. It is to be noted that components having the same functions as those in FIG.

FIG. 1 shows a monitoring and recording apparatus according to the present invention. This monitoring and recording apparatus has an auxiliary time lapse VTR 8 added to the monitoring and recording apparatus with an autochanger shown in FIG. 5, and the configuration of the controller 4 is changed as shown in FIG. The outline of this change is that a routine for recording the monitoring video A by the auxiliary time lapse VTR 8 is interposed between steps S1 and S3 of the conventional flowchart shown in FIG.

More specifically, the recording control section of the controller 4 is configured as shown in FIG. Controller 4
In step S1, the time lapse V as the first recording means
The presence / absence of the end detection signal B generated from TR2 is detected. Until the detection of the end detection signal B is detected, step S2 is executed, and the tape cassette set by the time lapse VTR2, here, is set. The monitoring video A is intermittently recorded on the tape cassette 3a.

When the generation of the end detection signal B is detected in step S1, step S7 is executed to instruct the auxiliary time lapse VTR 8 as the second recording means to intermittently record the monitoring image A. The auxiliary time lapse VTR 8 immediately executes the intermittent recording of the monitoring image A on the tape cassette 9.

In step S3, a command is issued to the time lapse VTR 2 to rewind the magnetic tape. In step S4, it is determined whether or not the rewind completion signal C is generated from the time lapse VTR 2. The routine of steps S3 and S4 is repeatedly executed until the rewind completion signal C is detected in step S4. When the return completion signal C is detected, step S5 is executed.

In step S5, an instruction is given to the autochanger 6 to replace the tape cassette. Upon detecting the tape cassette replacement instruction, the autochanger 6 takes out the tape cassette 3a of the time lapse VTR 2, stores it in the storage location 7a, takes out the unrecorded tape cassette 3b stocked in the storage location 7b, and takes out the time lapse VT.
Set to R2.

In step S6, it is checked whether or not the replacement of the tape cassette in the time lapse VTR 2 has been completed. If the completion of the replacement of the tape cassette is detected in step S6, the routine exits from the routine shown in FIG. It is repeatedly executed at specified time intervals to execute intermittent recording of the monitoring image A by the tape cassette 3b in the time lapse VTR2.

In this manner, every time the rewind completion signal C is generated in the time lapse VTR 2, the automatic change of the tape cassettes 3a, 3b, 3c... Is executed, and the tape cassette 3 recorded to the end is
monitoring video A1 in the section where a is replaced with tape cassette 3b
Is recorded intermittently in the tape cassette 9 of the auxiliary time lapse VTR 8, and after the tape cassette 9, a monitoring video A2 of a section in which the tape cassette 3b recorded to the end is replaced with the tape cassette 3c is recorded. Shows a monitoring video A3 of a section in which the tape cassette 3c recorded up to the end is replaced with the tape cassette 3d,
Thereafter, recording is similarly performed on the tape cassette 9.

The monitor images A1, A2, A3,... Are a monitor image of the tape cassette rewinding time recorded to the end and the recorded tape cassette is taken out of the time-lapse VTR 2 by the autochanger 6 and stored in a storage location. It comprises a monitor video of a tape cassette replacement time required to take out the next unrecorded tape cassette from the storage location, set it in the time lapse VTR 2 and start recording.

The time lapse VTR 2 and the auxiliary time lapse VTR 8 as the first and second recording means record recording time data together with the recording time data at predetermined positions in the recording format.

The reproduction control section of the controller 4 is configured as shown in FIG. In step S8, the tape cassette 3a is reproduced by the time lapse VTR 2 and displayed on the display 5. This reproduction is continued until the generation of the end detection signal B from the time lapse VTR 2 is detected in step S9. When the generation of the end detection signal B is detected in step S9, the auxiliary time lapse VTR is detected in step S10.
8 is instructed to start playback of the monitoring video A1. The reproduced monitoring video A1 is displayed on the display 5.

In step S11, the time lapse VTR2
To rewind the magnetic tape. In step S12, it is determined whether or not the rewind completion signal C has been generated from the time lapse VTR 2. The routine of steps S11 and S12 is repeatedly executed until the rewind completion signal C is detected in step S12. When the return completion signal C is detected, step S13 is executed.

In step S13, an instruction is given to the autochanger 6 to replace the tape cassette. The autochanger 6, which first detects the instruction to replace the tape cassette,
The tape cassette 3a of the time lapse VTR 2 is taken out and stored in the storage location 7a, and the recorded tape cassette 3b stocked in the storage location 7b is taken out and set in the time lapse VTR 2.

In step S14, the time lapse VTR2
It is checked whether or not the replacement of the tape cassette has been completed at step S14. If the completion of the replacement of the tape cassette is detected at step S14, the auxiliary time lapse V
TR8 is instructed to stop playback, auxiliary time-lapse VTR
8 is the surveillance video A recorded on the tape cassette 9
At the end of 1, it stops at the start position of the monitoring video A2.

When step 15 is completed, the process immediately returns to step S8, where a command is issued to the time-lapse VTR 2 to reproduce the tape cassette 3b until the end detection signal B is detected in step S9. In the next step S10, a playback start is instructed to the auxiliary time lapse VTR 8,
The auxiliary time lapse VTR 8 reproduces the monitoring video A2 recorded on the tape cassette 9. During this time, the tape cassette 3b of the time-lapse VTR 2 is moved to the tape cassette 3 by steps S11 to S14.
c, and in step S15, the auxiliary time lapse V
TR8 is instructed to stop playback, auxiliary time-lapse VTR
8 is the surveillance video A recorded on the tape cassette 9
At the end of 2, it stops at the start position of the monitoring video A3. Less than,
Similarly, steps S8 to S15 are executed, and the auxiliary time-lapse VTR 8 performs a reproducing operation even during the tape cassette replacement period of the time-lapse VTR 2, so that the intermittently recorded monitoring video is displayed on the display 5 without interruption.

In the above embodiment, the monitoring image is recorded by the time-lapse VTR 2 as the first recording means, and the recording medium is a magnetic tape stored in a tape cassette. However, the recording medium is limited to a magnetic tape. Not something
A hard disk or a magneto-optical disk used as a storage device of a personal computer can also be used. Similarly, the recording medium of the second recording means was a magnetic tape stored in a tape cassette, but the recording medium is not limited to a magnetic tape, and a hard disk or a hard disk used as a storage device of a personal computer may be used. A magneto-optical disk or the like may be used.

In the above embodiment, when the recording medium being reproduced by the first recording means reaches the end of recording, reproduction of the recording medium of the second recording means is started, and the recording medium by the first recording means is started. When the recording medium reaches the end of the recording after the switching, the reproduction of the recording medium of the second recording means is started from the recording track immediately after the previous recording track, but when the monitoring video is recorded, the reproduction is performed on the same recording medium. On the basis of the recorded recording time, the recording time written to the recording medium of the second recording means is searched according to the recording time of the recording end portion of the first recording means, and The reproduction of the second recording means can be started from the monitoring video of the recording time immediately after the recording time of the recording end part.

[0035]

As described above, according to the present invention, the first recording means for recording the monitoring video on the recording medium, the exchange means for switching the recording medium on which the first recording means performs recording, and the exchange means And a second recording means for recording the monitoring video while the recording medium is being switched by the means.
When recording is performed for a long time by automatically exchanging the recording medium, it is possible to realize monitoring recording in which there is no monitoring blank time, and from the reproduction of the recording medium recorded by the first recording unit to the recording recorded by the second recording unit. By switching to the medium reproduction state and performing reproduction, it is possible to contribute to realizing a better monitoring state than before.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a monitoring recording device according to the present invention.

FIG. 2 is a flowchart diagram of the controller according to the embodiment at the time of recording.

FIG. 3 is a flowchart at the time of reproduction of the controller of the embodiment.

FIG. 4 is a configuration diagram of a conventional monitoring and recording device.

FIG. 5 is a configuration diagram of a conventional monitoring recording device with an autochanger.

FIG. 6 is a flowchart at the time of reproduction of the conventional controller of FIG. 5;

[Explanation of symbols]

1 Video camera 2 Time lapse VTR 3a, 3b, 3c Tape cassette (Time lapse V
TR2 recording medium 4 Controller 5 Display 6 Autochanger (exchange means) 8 Auxiliary time lapse VTR (First recording means) 9 Tape cassette (Auxiliary time lapse VTR8 recording medium) A Monitoring video B End detection signal C Rewind complete signal

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI // G11B 17/22 G11B 17/22 19/02 501 19/02 501B

Claims (3)

[Claims] A first recording unit for recording a monitoring video on a recording medium; an exchange unit for switching a recording medium on which recording is performed in the first recording unit; and a monitoring unit for switching the recording medium by the exchange unit. A monitoring recording device provided with a second recording means for recording a video. 2. The monitoring and recording apparatus according to claim 1, further comprising a reproduction control unit for switching from reproduction of the recording medium recorded by the first recording means to reproduction of the recording medium recorded by the second recording means. 3. A first recording means comprising a time lapse video recorder for recording a recording time together with a monitoring video, and a reproduction control section being written to a recording end of the magnetic tape being reproduced by the first recording means. 3. The monitoring and recording apparatus according to claim 2, wherein a corresponding portion of the recording medium of the second recording means is reproduced corresponding to the recording time.