JPH0564133A - Recording or reproducing device - Google Patents

Abstract

PURPOSE:To record a high picture quality still picture at a prescribed period at the same time as moving picture recording. CONSTITUTION:A moving picture signal is recorded on an inclined track on a recording tape and a still picture signal is recorded onto a track prolonged from the inclined track based on the moving picture signal stored in a picture memory 9 at a rate of one pattern per plural tracks, and the still picture signal is recorded repetitively for a prescribed period based on a timing from a recording timing generator 14 during the recording of the moving picture signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus capable of recording / reproducing still images as well as moving images.

[0002]

2. Description of the Related Art In recent years, in the field of magnetic recording, the demand for high-density recording has increased, and a video tape recorder (V
Also in (TR), the running speed of the tape is reduced to achieve higher density magnetic recording. When the running speed of the tape decreases, for example, when an audio signal is recorded by using a fixed head, the relative speed cannot be made large and the reproduced sound quality deteriorates. As one means for solving this, there is a method in which the length of the track scanned by the rotary head is made longer than in the conventional case and the time-axis-compressed audio signal is sequentially recorded in the extended portion. Specifically, a rotary 2-head helical scan type VTR
In the conventional method, the magnetic tape was wound around the rotating cylinder by 180 degrees or more, whereas in this method, the rotating cylinder is wound by (180 + θ) degrees or more, and the extra winding “θ” is PCMized and time-axis compressed. This is a method for recording the audio signal that has been recorded.

FIG. 2 is a diagram showing a tape traveling system of such a VTR, and FIG. 3 is a diagram showing recording tracks on a magnetic tape by the VTR shown in FIG. In FIG. 2, 19 is a magnetic tape, 21 is a rotary cylinder, 20A and 20B are heads mounted on the cylinder 21, 22 is a video signal recording area portion of a track formed on the magnetic tape 19, and 23.
Is also a PCM signal recording area portion.

The video signal recording area 22 is a rotary cylinder 2.
The head 20A, 20B traces 180 ° of 1 and the PCM signal recording area 23 is traced by θ of the rotary cylinder 21.

As an example of applying the method of recording a PCM signal in another area while recording a video signal as described above, a still image is recorded in the PCM signal recording area 23 by a PC.
It is proposed to record with the M signal. If the image is a still image, it is possible to record all the information on the magnetic tape by scanning the PCM recording area a plurality of times. According to this method, it is possible to stop running of the tape in the conventional VTR and obtain a still image having a higher image quality than a still image obtained by reproducing the video of the same track.

[0006] A digital high-quality still image is displayed on a VTR.
Considering a system for recording in a PCM recording area of a tape, a release button for recording a PCM still image such as a release button of a camera is provided in addition to a recording button for a normal moving image.

[0007]

However, the scene to be left as a PCM still image is not only the scene in which the release button is pushed and captured by one's own will, but there are many occasions where a valuable scene is encountered at an unexpected time.
It may be left behind in the M still image.

Therefore, an object of the present invention is to provide a recording or reproducing apparatus which solves the above problems.

[0009]

In order to achieve the above object, the present invention is directed to recording a moving picture signal on an inclined track of a recording tape and providing a plurality of still picture signals based on the moving picture signal in an extended area of the inclined track. A recording device for recording one screen on a track is characterized by comprising still image recording control means for repeatedly recording a still image signal at a constant period during recording of a moving image signal, and further, a moving image on a recording tape. Reproduction means for reproducing the still picture signal recorded in the extended area of the inclined track in which the signal is recorded, detection means for detecting an identification signal from the still picture reproduced by the reproduction means, and output of the detection means And display means for displaying.

[0010]

According to the present invention, recording of a still image is repeated at a constant period while recording a moving image, and still image recording can be performed at a desired timing. In addition, recording of a desired timing can be performed during reproduction. Still images are identified.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows an example in which the present invention is implemented in a VTR with a built-in camera. An image is converted into an electric signal by the CCD 1 which is the image pickup device, converted into a digital signal by the sample hold circuit 2 and the AD conversion circuit 3, and then in the digital camera signal processing circuit 4, γ correction processing, matrix processing for producing luminance and color difference, etc. Then, the DA conversion circuit 5 converts the analog signal to produce a video recording signal, the video recording processing circuit 6 converts the analog signal into a signal suitable for recording, and the signal is connected to the adder 16.

The AFM recording processing circuit 7 produces an audio recording signal, the ATF recording processing circuit 8 produces a tracking pilot signal, and both signals are mixed with a video recording signal by an adder 16 to produce a recording amplifier 18. Sent to.

The recording timing generator 14 generates a timing from capturing a still image to recording data in the PCM recording area 23. Reference numeral 13 is a release button, 15 is a system controller (system controller) for controlling the entire apparatus, 24 is an identification signal generator, and 25 is a switch (SW).

In the case of the recording operation at any time, a still image recording instruction is issued from the recording timing generator 14 together with the moving image recording instruction. First, a luminance signal and a color difference signal for one screen are taken into the image memory 9 from the digital camera signal processing circuit 4.
Information from the memory 9 is rate-converted by the rate conversion circuit 10 so that it can be recorded on a plurality of tracks in the PCM recording area 23, data compression is performed by the compression circuit 11, and then PCM.
In the recording processing circuit 12, error detection, correction code, ID, block address and the like are added and interleave processing is performed, the ATF signal is mixed with an adder 17 via an adder 26 and sent to a recording amplifier 18, and the head 20A. , 20B are recorded on a plurality of tracks in the PCM recording area 23. Assuming that the number of tracks required for recording one screen of a still image is N tracks including the guard track, still images are taken in at intervals of the time required for recording N tracks, and the same processing is repeatedly performed to continue the recording operation at any time. ..

FIG. 4 shows a recording state on the magnetic tape when a temporary recording moving image is made. In FIG. 4, the still image A ₁ image is taken into the memory 9 together with the moving image recording instruction, and is recorded over the N tracks of the PCM recording area 23 through the above processing so that the still image A ₂ image can be continuously recorded. The A ₂ image is taken into the memory 9. During movie recording, A ₃
Picture, continue to perform the A ₄ stroke and at any time the recording operation. However, when it is desired to record a still image at the moment of my intention, the release button 13 is pressed to perform the temporary recording operation.

When the release button 13 is pressed, the still image is taken into the memory 9 even if the time required for N-track recording has not elapsed from the still image taking timing of the recording operation at any time. For example, in FIG. 4, if the release button 13 is pressed during recording of A ₆ image data, B _{1 is} stored in the memory 9.
The image is taken in, and after the above processing, even if the recording of A ₆ is not completed up to N tracks, the data recording of B ₁ image is started. At the same time, the SW 25 is closed and the signal from the identification signal generator 24 is added to the B ₁ image data via the adder 26 and recorded. The signal of the identification signal generator 24 may be, for example, an ATF signal or a pilot signal of a single frequency that does not affect the PCM data.

In FIG. 4, the transition point of each still image data and the still image capturing point are represented at the same point. However, as shown in FIG. 5, even if the transition point of the still image data and the still image capturing point move forward or backward. Similar functions are obtained (even if they are deviated).

6 and 7 show the operation at the end of recording.

During the recording operation at any time, A _n
Also to stop the recording not be in image data recording is completed, the recording from the temporary recording operation in the recording stop instruction is B _m picture B _m-image data when being recorded in the data even recording is completed Stop.

FIG. 8 shows a block diagram of the reproducing system. The signals obtained by the heads 20A and 20B are amplified by the reproduction amplifier 31, and the signals in the video signal area 22 are ATF reproduction processing circuit 32, AFM reproduction processing circuit 34, and video reproduction processing circuit 3.
5 and video and audio are obtained.

On the other hand, the signal in the PCM recording area 23 is sent to the PCM reproduction processing circuit 36 and the identification signal detection circuit 41. P
The CM reproduction processing circuit 36 performs error detection, correction, deinterleaving, etc., and the still image decoder 37 and the image memory 38 restore the original still image. The DA conversion circuit 39 converts the information from the image memory 38 into a signal suitable for output, for example, a composite signal, and sends the signal to a moving image / still image select switch (SW) 44. Playback timing generator 4
0 controls the operation timing of each of the above components 36, 37, 38, 39. The video output terminal 45 is an output terminal common to moving images and still images.

The identification signal detection circuit 41 is composed of a bandpass filter, a detection circuit, etc., and detects the identification signal.
By displaying the result on the display unit 43, it is possible to determine whether the still image data is temporary recording data or occasional recording data.

It is also possible to retrieve only the temporarily recorded data at high speed. That is, it is possible to retrieve only the still image of the temporary recording by moving the tape at a high speed and stopping the tape running when the tape running control circuit 42 detects the identification signal of the temporary recording and reproducing from the beginning of the data.

In the above embodiment, the example in which the identification signal is superimposed on the entire still image data has been described. However, as shown in FIG. 9, the same effect can be obtained by superimposing the identification signal before and after the data or before the data.

Further, although a pilot signal of a single frequency is used as the identification signal in the above embodiment, the same effect can be obtained by including the identification signal in the ID code data.

In the above embodiment, the still image recording method using the camera-integrated VTR has been described. However, the image captured in the image memory 9 may be a signal from a TV tuner or a TV signal input from a line, so that it is so-called stationary. The present invention can also be applied to a type VTR.

[0028]

As described above, according to the present invention, it is possible to record a still image together with a moving image at a constant cycle, and it is possible to greatly reduce the failure to leave a valuable scene in the still image. Still image recording can also be performed at a desired timing.

Further, at the time of reproduction, it is possible to retrieve only the still image recorded at the desired timing based on the identification signal between the still image recorded at the desired timing and the still image recorded at the constant period.

[Brief description of drawings]

FIG. 1 is a block diagram of a camera-integrated VTR embodying the present invention.

FIG. 2 is a diagram showing a tape running system in which a tape is wound up to a PCM recording area.

FIG. 3 is a diagram showing a recording track on a tape.

FIG. 4 is a diagram showing a recording state on a tape.

FIG. 5 is a diagram showing a recording state on a tape.

FIG. 6 is a diagram showing a recording state on a tape when recording is stopped.

FIG. 7 is a diagram showing another recording state on the tape when recording is stopped.

FIG. 8 is a block diagram of a VTR reproducing system embodying the present invention.

FIG. 9 is a diagram showing a state of an identification signal on a tape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CCD image pickup device 2 Sample hold circuit 3 AD conversion circuit 4 Digital camera signal processing circuit 5 DA conversion circuit 6 Video recording processing circuit 7 AFM recording processing circuit 8 ATF recording processing circuit 9 Image memory 10 Rate conversion circuit 11 Compression circuit 12 PCM recording Processing circuit 13 Release button 14 Recording timing generation circuit 15 Syscon circuit 16 Adder 17 Adder 18 Recording amplifier circuit 19 Magnetic tape 20A, 20B head 21 Drum 22 Video recording area 23 PCM recording area

Claims (8)

[Claims] 1. A moving image signal is recorded on a slanted track of a recording tape, and a still image signal based on the moving image signal is recorded on a plurality of tracks in an extended area of the slanted track.
A recording device for recording at a ratio of a screen portion, comprising a still image recording control means for repeatedly recording a still image signal at a constant period during recording of a moving image signal. 2. The still image recording control means has an instructing means for instructing recording of a desired still image, and when instructed by the instructing means, does not wait for completion of a fixed period still image recording operation. The recording apparatus according to claim 1, further comprising: recording a still image signal according to the instruction. 3. The recording apparatus according to claim 2, wherein the still image recording control means shifts to the still image recording operation of the constant cycle after the completion of the still image recording operation according to the instruction. 4. The still image recording control means stops the still image recording without waiting for the completion of the still image recording operation of the constant cycle when a moving image signal recording stop instruction is given. The recording device according to 1. 5. The still image recording control means stops the recording of the moving image signal after the still image recording is completed during the still image recording operation instructed by the instructing means even if there is an instruction to stop recording the moving image signal. The recording apparatus according to claim 2, wherein: 6. The recording apparatus according to claim 2, wherein the still image recording control unit records the still image signal according to the instruction of the instruction unit by superimposing an identification signal on the signal. 7. A reproducing means for reproducing a still picture signal recorded in an extended area of an inclined track in which a moving picture signal of a recording tape is recorded, and an identification signal is detected from the still picture reproduced by the reproducing means. A reproducing apparatus comprising a detection means and a display means for displaying an output of the detection means. 8. The reproducing apparatus according to claim 7, wherein the running control of the recording tape is performed based on the output result of the detecting means.