JPH04238469A - Magnetic video recording device provided with television camera - Google Patents

Abstract

PURPOSE:To reduce the consumption of a battery by automatically turning on a light illuminating an object if necessary and automatically turning off the light if not necessary in a magnetic video recording device provided with a television camera. CONSTITUTION:The light 2 illuminating the image pickup range of the television camera is provided on the case of the magnetic video recording device. A turning on switch 6 is automatically driven by interlocking it to the start and end of recording by the operation of a recording operation switch 8 and the light 2 is turned on only at the time of recording.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a magnetic recording device with a television camera that integrates a television camera and magnetic recording means for sequentially recording video output signals from the television camera on a magnetic tape. In particular, the present invention is characterized by a driving means for a light that illuminates the imaging range of the television camera.

0002

2. Description of the Related Art Conventionally, as shown in FIG. 2, a casing 1 of a magnetic recording device with a television camera is provided with a light 2 for illuminating the imaging range of the television camera. When necessary or unnecessary, the light 2 was turned on and off by operating a lighting switch 3 provided on the housing 1.

0003

[Problems to be Solved by the Invention] However, with the above configuration, there is no particular problem when shooting and recording continuously at night, but when shooting intermittently over a short period of time, the light 2 is turned on all the time. Doing so would result in unnecessary consumption of the limited battery, so it was necessary to operate the lighting switch 3 each time recording started and ended, which was a complicated operation.

The present invention aims to solve the above problems.

[0005]

[Means for Solving the Problems] A magnetic recording means with a television camera of the present invention is provided in a housing that houses a television camera and a magnetic recording means for sequentially recording video output from the television camera on a magnetic tape. The present invention is characterized in that a light is provided to illuminate the imaging range of the television camera, and the light is turned on and off in conjunction with recording start and end operations of the magnetic recording means.

[0006]

[Operation] According to this configuration, the light is automatically turned on and off in conjunction with the recording operation, so even when recording intermittently, the light can be turned on and off when recording is started or interrupted. There is no need to do this.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 2 denotes a light attached to the housing of a magnetic recording device with a television camera, and is connected to a battery 7, which serves as a power source for the magnetic recording device, through a power switch 5 and a lighting switch 6 in series. has been done.

Reference numeral 8 denotes a recording operation switch, and a recording operation is performed while the recording operation switch 8 is turned on.

When this recording operation switch 8 is turned on, 1
A recording operation signal is applied to the recording control circuit 10 via the delay circuit 9 having a delay time of seconds, and the recording operation is started. Further, when the recording operation switch 8 is turned on, the lighting switch 6 is turned on via a hysteresis circuit 11 having a 1 second hysteresis characteristic, and the lamp 2 is turned on.

That is, when the recording operation switch 8 is turned on, the lighting switch 6 is immediately turned on, and the lamp 2 is turned on to illuminate the subject. After the lamp 2 is turned on, actual recording is performed with a delay of the delay time of the delay circuit 9. During this delay time, the light image from the subject is received and the white balance circuit, AGC circuit, The control mechanism that automatically controls the functions of the television camera based on the imaging output of the TTL automatic focus control circuit, etc. is set to operate, and is configured so that recording is performed in good condition from the beginning of recording. .

When the recording operation switch 8 is turned OFF, the recording operation is immediately stopped, and the light 2 is turned off with a delay of one second by the hysteresis circuit 10 after the stopping operation.

[0013]

As described above, according to the present invention, since the light is automatically turned on and off in conjunction with the recording operation switch, the light can be turned on and off when recording intermittently. There is no need to perform any operations.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram showing the main parts of a magnetic recording device with a television camera according to an embodiment of the present invention.

[Fig. 2] A perspective view of a conventional television camera appendix device.

[Explanation of symbols]

2 Light 5 Power switch 6 Lighting switch 8 Recording operation switch 9 Delay circuit 10 Recording circuit 11 Hysteresis circuit

Claims (1)

[Claims] 1. A light for illuminating an imaging range of the television camera is provided on a housing housing a television camera and a magnetic recording means for sequentially recording video output from the television camera on a magnetic tape, A magnetic recording device with a television camera, characterized in that the light is turned on and off in conjunction with recording start and end operations of the magnetic recording means.