JPH0831246B2 - Image information recording device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an image information recording apparatus having a function of recording a normal moving image and also a still image in parallel.

[Prior Art] For example, in a conventional VTR device for photographing, a function for photographing a still image is not particularly added, and when it is necessary to reproduce the still image, the still mode is set and the image is recorded on the tape. An image for one field or one frame was taken out from the recorded moving images.

[Problems to be Solved by the Invention] However, when a signal for one frame is extracted from a moving image signal and a still image is played back as described above, if the image is played back as a moving image signal, it is sufficiently endurable. Even if the image quality is still, if the image is a still image, the S / N is visually deteriorated and the image is blurred.

Therefore, it is possible to record a still image separately from recording a moving image. In this case, when recording a still image signal, it may be possible to digitize the image signal to prevent deterioration of image quality.

For example, a VTR for shooting has recently been downsized, and so-called 8 mm video has been developed. It is conceivable to record a still image signal in a PCM recording area defined in the 8 mm video format.

However, when the above-described method of separately recording a moving image signal and a still image signal on the same recording medium is used, still images cannot be searched unless the moving image portion and the still image portion are related to each other. It is difficult, and one still image screen may be recorded in an incomplete state. Further, if a user intentionally tries to take a still image while shooting a moving image, it may be distracting and the shooting may be difficult.

The present invention has been made in view of such a problem, and an object of the present invention is to provide an image information recording apparatus capable of recording a still image of high image quality associated with a moving image.

[Means for Solving Problems] In the image information recording apparatus of the present invention, a moving image signal composed of a plurality of moving image unit image signals and a still image signal of a single still image unit image signal are recorded on the same recording medium. An image information recording device for recording respectively, recording means for recording such that the time required for recording the still image unit image signal is longer than the time required for recording the moving image unit image signal, Regulating means for regulating the recording operation of the moving image signal in association with the recording operation of the still image signal, wherein the regulating means until the recording of the still image unit image signal ends It is characterized by continuing the recording of.

[Operation] According to the present invention, when the moving image signal and the still image signal are simultaneously recorded on the same recording medium, the end point of the moving image signal coincides with the end point of one-screen recording of the still image signal. You can always get a complete still image.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of a photographing VTR device according to an embodiment of the present invention.

In FIG. 1, 1 is a lens, and 2 is a Charge Coupled Device as an image sensor arranged at the focal point of the lens 1.
(Hereinafter referred to as CCD). Reference numeral 16 denotes a system controller, which has a Read Only Memory (hereinafter referred to as ROM) that stores a control procedure as shown in FIG. 2 described later. Fifteen
Is a sync signal generator (hereinafter referred to as SSG), which will be described later with a CCD driver 17, a picture memory driver 18,
The system controller 16 is supplied with signals necessary for controlling the mechanical control 14 and the like. The CCD driver 17 drives the CCD 2 based on the scan pulse from the system controller 16.

An analog signal processing circuit 3 converts the three primary color signals from the CCD 2 into a luminance signal Y and a color signal C.

4 is a luminance signal Y from the analog signal processing circuit 3,
This is an FM modulation circuit for performing FM modulation suitable for recording. Reference numeral 5 is a low frequency conversion circuit for converting the color signal from the analog signal processing circuit 3 into a low frequency suitable for recording.

6 is an analog / digital (A / D) converter, which is a CCD
The image pickup signal from 2 is converted into a digital signal.

A picture memory 7 stores the image pickup signal converted into a digital signal by the A / D converter (in units of frame period or field period).

A picture memory driver 18 drives the picture memory 7 based on a control signal from the system controller 16.

A Pulse Code Modulation (PCM) encoder 8 encodes the digital image pickup signal from the picture memory 7 so as to be suitable for recording on the magnetic tape 20 as a recording medium.

Reference numeral 9 denotes a microphone that picks up an audio signal.
Reference numeral 10 is a processing circuit for amplifying the signal from the microphone 9, and 11 is an FM modulation circuit for performing FM modulation on the signal from the processing circuit 10.

Reference numeral 13 is a rotary magnetic head, and 12 is a recording formatting circuit, which inputs the luminance signal from the FM modulation circuit 4 and the color signal from the low frequency conversion circuit 5 as a moving image signal, and a PCM.
The PCM signal from the encoder 8 is input as a still image signal, the audio signal from the FM modulation circuit 11 is further input, and these are formatted into a signal suitable for recording on the magnetic tape 20. For example, in the case of supporting the so-called 8 mm video standard, the moving image signal and the audio signal are frequency-multiplexed and the magnetic tape is rotated by the rotary magnetic head 13.
20 video + FM audio tracks are recorded, and still image signals are recorded on the magnetic tape 20 by the rotating magnetic head 13 as an extension of the video + FM audio tracks (PC
M audio track).

A mechanical control device 14 controls the running of the magnetic tape 20 and is controlled by the system controller 16.

A still image recording switch 19 is turned on at a desired moment to input its on signal to the system controller 16. Therefore, by pressing a switch or the like (not shown) for shooting a moving image to start shooting, and during shooting of the moving image, the system controller 16 inputs an ON signal of the switch 19 to cause one screen period (for example, one frame, or (1 field period) The picture memory driver 18 is controlled so that the image pickup signal from the A / D converter 6 is stored in the picture memory 7.

The still image signal stored in the picture memory 7 is
It is read by the picture memory driver 18 over a longer time than during recording, is converted by the PCM encoder 8 into a signal form suitable for the PCM format, and is sent to the recording formatting circuit 12, and is transferred via the head 13 to the tape 20. It is recorded as a still image on the extension track.

Since the still image signal is recorded concurrently with the recording of the moving image signal, a still image associated with the content of the moving image can be taken. Therefore, when it is necessary to play back a desired still image after recording a still image, when searching for a still image, the recording position of the desired still image signal can be known by playing the moving image signal at high speed. . Since the image signal is digitized and recorded, it is possible to record with high image quality.

When the switch 19 is not pressed, the system controller 16 continuously records the still image signal on the extended video track of the tape.

In that case, the image pickup signal is taken out for a longer time than when it is stored in the picture memory 7. Therefore, if the shooting of a moving image is stopped at an arbitrary moment, a still image signal is recorded on the tape 20. While recording, the recording may be stopped and one-screen recording of a still image may not be completed.

If shooting is resumed in a state where one-screen recording of a still image is not completed, the screen of the still image section is poorly connected and is difficult to see.

In view of this, in the present invention, a system is provided in which still image recording is started at the same time when moving image shooting is started, and the moving image shooting time is a natural multiple of the minimum time required to record one screen of a still image signal from the start of shooting. This VT by controller 16
R Controls the entire device (mechanical control device 14).

FIG. 2 is a flowchart showing the moving image shooting stop operation of the system controller 16 as described above.

In step 101, it is determined whether or not the moving image capturing switch (trigger switch) is "off". When the switch is off, the process proceeds to step 102 to determine from the end of still image recording. That is, from the time of switch-off, when the first time reaches a natural multiple of the minimum time required to record one screen of a still image signal from the start of shooting a moving image, the process proceeds to step 103, and the moving image recording and the still image recording are stopped. To do.

For example, to record a still image signal for one screen, 6
If the second is set, the recording time of the moving image signal is set to 6 × nsec (n is a natural number).

As described above, after passing through steps 101 and 102, the process proceeds to step 103 of recording stop, so that the recording is not stopped with the still image screen not completed.

Although the trigger switch for recording the moving image signal is not shown in FIG. 1, the switch 19 for the still image is not shown.
It is configured to operate in steps, and the first one-step pressing operation
The trigger switch for recording the moving image signal may be operated, and the switch 19 for recording the still image signal may be turned on by the pressing operation in the next stage.

The system controller 16 may use a counter instead of the one shown in FIG. 2, and if the number of still images is 6 seconds, a pulse may be output every 6 seconds.

[Effects of the Invention] As described above, according to the present invention, it is possible to provide an image information recording apparatus capable of recording a still image of high image quality associated with a moving image.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a flow chart showing an example of the operation of the system controller of the device of the present invention. 1 ... Lens, 2 ... CCD element, 3 ... Analog processing device, 4 ... FM modulation circuit, 5 ... Low-frequency conversion circuit, 6 ... A /
D converter, 7 ... Picture memory, 8 ... PCM encoder, 9 ... Microphone, 10 ... Voice processing circuit, 11 ...
FM modulation circuit, 12 ... Recording formatting circuit, 13 ...
Recording head, 14 Mechanical control device, 15 Synchronous signal generator, 16 System controller, 17 CC
D driver, 18 …… Picture memory driver, 1
9 …… switch, 20 …… tape.

Claims (1)

[Claims] 1. An image information recording apparatus for recording a moving image signal composed of a plurality of moving image unit image signals and a still image signal of a single still image unit image signal on the same recording medium, respectively. Recording means for recording such that the time required for recording the still image unit image signal is longer than the time required for recording the moving image unit image signal, and the recording operation for the moving image signal is performed for recording the still image signal. An image information recording apparatus comprising: a restricting unit that restricts the motion image signal in relation to an operation, and the restricting unit continues recording the moving image signal until the recording of the still image unit image signal is completed. .