JPH1051720A - Television camera system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the continuity of time in frame photographing recording and to generate a program without the feeling of incompatibility in frame photographing by comparatively precisely adjusting pictures by viewing the pictures by means of switching the picture of cut-out for photographing the previous frame and the picture which is to be cut in for photographing the next frame on the same picture monitor. SOLUTION: A switch circuit 1d changes over the output signal of a television camera 1a by an electronic switch operating by a switch control signal and a cut-out still picture for photographing the previous frame, which is read from a memory 1e. The output of the switch circuit 1d is sent to the picture monitor 4 through VTR 3 as main line output or sent to a view finder 1b through a D/A converter 1c. A camera operator views the view finder 1b, compares it with the cut-out picture for photographing the previous frame and corrects the magnification of the position lens of the camera. When correction terminates and the next frame is to be cut in, a camera picture signal is recorded in VTR 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a television program from images captured and recorded using a television camera and a VTR. This is a television camera system capable of recording with reduced errors.

[0002]

2. Description of the Related Art Production of television programs by time-lapse recording is a commonly used method. Hereinafter, a block diagram showing the entire configuration of the conventional technique of FIG. 2 will be described. The television camera 1a captures an image of the subject 2 and sends it as a digital signal to the VTR 3 for recording on a video tape. The recorded image can be monitored on the image monitor 4. The viewfinder 1b attached to the camera body 1
However, the digital output of the television camera 1a is D /
Since the output converted into the analog signal by the A converter 1c is supplied, the camera operator can monitor the captured image. At the time of program production, there is a recording person in charge of recording the shape, characteristics, and the like of the subject at the time of recording start (cut-in) and recording end (cut-out) of time-lapse recording. One thing to keep in mind when recording time-lapse is that the images between time-lapses are often continuous in time. To be continuous,
That is, it is necessary to make the image between them so that there is no difference.

Conventionally, in order to maintain time continuity between frame shots, there is a person in charge of a recording person who records the shape, characteristics, etc. of an image for each cut of a frame shot, and starts shooting the next frame. The subject is being reset or modified. However, there is a great deal of image information, and there is a limit for recording and memorizing by human beings, which places a heavy burden on recording personnel. If it is determined that the image reproduction of the previous frame is not sufficient, the recorded V
In some cases, the TR is reproduced, the cutout image of the previous frame is confirmed on the image monitor, and the image of the next frame is reproduced.
At this time, it was necessary to rewind and reproduce the recording tape of the VTR.

[0004]

In the prior art for producing a television program by time-lapse recording, when it is necessary to take temporal continuity, a recording clerk looks at a subject at a shooting site and cuts off the subject. Or the recorded VTR tape is played back to check the cutout image of the previous frame and correct the subject so that the cutout image becomes the same image.
This required skilled recording personnel. SUMMARY OF THE INVENTION It is an object of the present invention to eliminate these drawbacks and to easily confirm whether a cutout image in time-lapse recording matches a cut-in image in the next time-lapse recording.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention incorporates a memory for storing a still image of a cut-out portion of time-lapse shooting into a television camera device, and sets the memory when starting the next time-lapse shooting. The still image read from the memory and the image of the television camera to be shot next are switched and displayed on the image monitor, and when both images match to the extent that there is no problem, cut-in for frame shooting is started.
Here, the memory can perform high-speed operation and can be easily controlled.
For example, a semiconductor memory or the like is used. Thereby, the image of the cutout portion of the time-lapse shooting and the image of the cut-in of the next time-lapse shooting can be switched and viewed on the same image monitor, so that the difference between the images can be easily found.
When a semiconductor memory is used as a memory, writing and reading can be performed instantaneously, and therefore, the amount of work does not increase significantly.

[0006]

FIG. 1 is a block diagram showing the overall configuration of the present invention. The subject 2 is a television camera 1a
, And becomes a digital output signal, and enters the switch circuit 1d and the memory 1e. The operation mode of the memory 1e is determined by a write / read control signal, and at the time of cutout in time-lapse shooting, the memory 1e is in a write operation, and a still image at the time of cutout is recorded. At other times, the read operation is performed. Memory 1
By increasing the capacity of e, it is possible to record still images at the time of cutout of a number of time-lapse shots, and by specifying the address of the memory 1e, it is possible to read out still images of previous cutouts. Switch circuit 1d
Is an electronic switch operated by a switching control signal.
e and the cut-out still image of the previous frame shot read from e. The output signal of the television camera 1a is an image to be cut in for the next frame shooting.

[0007] The output of the switch circuit 1d is sent to the image monitor 4 via the VTR 3 as a main line output.
It is sent to the viewfinder 1b via the D / A converter 1c. The correction of the subject 2 at the time of cut-in is performed by a recording person who looks at the video monitor 4 and compares it with the cut-out image of the previous frame. The camera operator looks at the viewfinder 1b, compares the cutout image of the previous frame, and corrects the position of the camera, the magnification of the lens, and the like. When the correction is completed and cut-in of the next frame is started, the switching of the switch circuit 1d is operated by the switching control signal so as to be connected to the output side of the television camera 1a.
Recorded in TR3.

[0008]

According to the present invention, the cut-out image of the previous frame shooting and the image to be cut-in of the next frame shooting are switched and viewed on the same image monitor, so that it is relatively accurate. Images can be matched. As a result, time continuity in time-lapse recording is maintained, and it is possible to create a program that does not cause any discomfort even in time-lapse shooting.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the overall configuration of the present invention.

FIG. 2 is a block diagram showing the entire configuration of a conventional technique.

[Explanation of symbols]

1: camera body, 1a: television camera, 1b: viewfinder, 1d: switch circuit, 1e: memory,
3: VTR, 4: Image monitor.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical indication H04N 5/7826

Claims (3)

[Claims] 1. A television camera system for recording an image signal captured by a television camera in an image storage device such as a video tape recorder (hereinafter, referred to as a VTR) to create a program. A television camera system comprising: a memory for recording an image; and a controller for writing a captured image at a designated time to the memory and reading the image at a predetermined time. 2. The image processing apparatus according to claim 1, wherein the picked-up image and the image read from the memory unit are alternately switched, and this signal is output to the next monitor or a view finder of the television camera system as an output signal of the television camera. A television camera system comprising a transmitting unit. 3. A time-lapse image which is divided into many short time-lapse scenes and recorded is recorded in an image storage device such as a VTR, and the image storage device performs predetermined editing to produce a television program. At the start of the next frame capture, the still image at the end time portion of the previous frame capture is read out from the memory at the start of the next frame capture, and the still image at the end time portion of the predetermined frame capture is read from the memory. A television camera system characterized in that a start image is alternately switched and displayed on an image monitor, and by monitoring this, a mismatch point between the two images can be visually confirmed.