JPH0442680A - Video recorder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a video recording device that records video signals on a recording medium.

[Prior Art] VTRs are increasingly being used for learning and teaching purposes. For example, in golf, etc., one monitor screen has a VT
A device is being considered that displays a professional performance played back from R, and displays recorded images of the user's own actions on a separate monitor screen.

[Problems to be Solved by the Invention] However, in such a configuration, not only two monitor TVs and two VTRs are required, but also two VT monitors and two VTRs are required.
A drawback is that it is extremely difficult to synchronize the playback start point of R, that is, the start of the teacher's and student's movements.

Therefore, an object of the present invention is to provide a video recording device that can compare two images with a simpler configuration and operation.

[Means for Solving the Problems] A video recording device according to the present invention stores a first video signal in a memory means having a storage capacity for a plurality of screens,
The present invention is characterized in that the first video signal is read from the memory means at a predetermined timing, the second video signal and the first video signal are combined and recorded on the recording medium.

[Operation] With the above means, two video signals that are desired to be compared and referenced can be recorded on one recording medium. Therefore, two images can be compared in detail by very simple operations such as reproducing, slow reproducing, and still reproducing the recorded images on the recording medium.

Further, only one recording system for the recording medium and one monitor device for checking the reproduced image are required.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a block diagram of an embodiment of the present invention configured for golf practice. 26a is an input terminal for a television video signal, 26b is an input terminal for a video signal from a video camera, 26c is an input terminal for a video signal from an external video playback device, and 26d is a video signal from an electronic recording medium such as an IC card. This is the input terminal of Input terminals 26a, 26b
, 26c can be selected by the switch 24, and the selected signal is supplied to the recording circuit 22, the b contact of the switch 28, and the image signal processing circuit 44.

The recording circuit 22 is also supplied with image information stored in a memory 36 via a D/A converter 42, and TD words such as index information from a control ID generation circuit 38. 22 is a D/A converter 42
The image signal from the switch 24 and the video signal from the switch 24 can be combined. The output of the recording circuit 22 is amplified by an amplifier 18 and sent to the rotating magnetic heads 12a, 12b via a switch 14.
is applied and recorded on the magnetic tape 10. Here, it is assumed that the video signal and the ID word are recorded in separate areas on the tape 10. Note that under the control of the system control circuit 52, the switch 14 is connected to the a contact point during playback, and connected to the b contact point during recording.

Further, when reproducing a video signal recorded on the magnetic tape 10, the reproduction outputs of the rotating magnetic heads 12a and 12b are applied to the reproduction circuit 20 via the switch 14 and the amplifier 16. The reproduction circuit 20 supplies the reproduced video signal to the a contact of the switch 28 and the reproduced ID word to the control ID detection circuit 54, respectively. Control ID detection circuit 5
4 extracts index information from the ID word and supplies it to the system control circuit 52, which thereby controls the beginning of the magnetic tape 100 and the like.

The timing signal generation circuit 56 and the speech synthesis circuit 58 are
In accordance with the control signal from the system control circuit 52, a voice instruction signal (for example, " Please start swinging the driver now."
Alternatively, an oscillating sound signal is generated, and the user performs a predetermined operation or action in response to this audio instruction or oscillating sound from the speaker 60. The audio synthesis circuit 58 also generates audio signals of reminders, such as the points of the upcoming golf swing.

The timer 62 is provided to set a period for comparing the operation of the dexterity data and the training data.
The comparison period can be changed manually using the key 50.

The key 50 is an operation key that instructs the system control circuit 52 to operate, and further includes recording, playback, still, recording pause,
It is equipped with a plurality of keys such as index, start, etc. that are included in a normal VTR.

The switch 28 selects either the input video signal selected by the switch 24 or the reproduced video signal by the reproduction circuit 20, and the A/D converter 30 converts the analog signal selected by the switch 28 into a digital signal. The high-efficiency encoding circuit 32 encodes the digital video signal from the A/D converter 30 with high efficiency, for example, by using the I) CT (discrete cosine transform) method. Generally, high-efficiency encoded image data is stored in a recording medium such as an IC card, and the image data read from the storage medium can be inputted from the input terminal 26d. The switch 34 selects the output data of the high efficiency encoding circuit 32 or the image data from the input terminal 26d. The memory 36 has a storage capacity for a plurality of frames, and the image data selected by the switch 34 is stored in this memory 36 frame by frame. Address control circuit 40 controls write and read addresses of memory 36. The control ID generation circuit 38 generates inch and inch signals to be written into the memory 36. The inch code itself can be input from the index key of the operation key 50 and is supplied to the control ID generation circuit 38 via the system control circuit 52.

In this embodiment, two display areas 48a and 48b are set on the screen of one monitor device 48 to display independent images, and the image processing circuit 44 receives the image signal from the frame memory 36. The monitor device 48 synthesizes and displays image signals from a video camera, etc., and sets the display position, display size, etc. Further, 46 is an electronic view finder installed in a video camera or the like, and is used to check individual images.

The operation of this embodiment will be explained according to the operation flowchart in FIG. Note that FIG. 2 also shows the display contents on the screen of the monitor device 48 corresponding to each operation. First, text data is stored in the memory 36 (Sl). If the text data is stored in the IC card, connect the switch 34 to the b contact and input the switch from the input terminal 26d.
It is applied to the memory 36 via the sochi 34. text·
If it is data or a video signal from the outside, connect the Sui-Sochi 34 to the A contact and the switch 28 to the B contact, select the video source with the switch 24, and connect the video signal from the outside to the switch 24, 28, the memory 3 via the A/D converter 302, the high-efficiency encoding circuit 32, and the sui-nochi 34.
6. The image written to the memory 36 is D/
The signal is supplied to the image processing circuit 44 via the A converter 42 and displayed on the display area 48a of the monitor device 48. Also, E
It can also be observed with VF46.

Next, while observing the images sequentially read out from the memory 36 in the display area 48a,
An index signal is input using the key (S2). That is, when the system control circuit 52 detects that the index key has been pressed, the control ID generation circuit 38
A command is sent to generate an index signal, and this inch sox signal is written into memory 36.

The system control circuit 52 connects the switch 24 to the input terminal 26b of the video signal from the video camera, and instructs the image processing circuit 44 to send the video signal from the Sochi 24 to the display area 48b of the monitor device 48. The image processing circuit 44 is set to display the image (S3). Wait for the start button (operation key 50) to be turned on, which instructs the start of the comparison operation between the text data and training data (S4).
), when the start button is turned on, the system control circuit 52 starts the voice synthesis circuit 58 and the timing signal generation circuit 5.
6, an instruction voice or oscillation sound to start the operation is generated (S5). The person training starts the movement in response to the end of the instruction voice or oscillation sound.

The movements of the person undergoing training are photographed by the video camera and displayed as training data in the display area 48b by the image processing circuit 44 (S6). At this time, the recording circuit 22 and the magnetic tape 10 are on standby in a so-called recording pause state.

When the instruction voice or oscillation sound ends (S7), the person training starts his/her own movement. At the same time, the text data images in the memory 36 are sequentially read out,
Together with the images from the video camera, they are displayed on the display areas 48b and 48a of the monitor device 48, and the recording circuit 22 and magnetic tape 10 are put into recording mode, and the video signal (i.e., text data) of the display contents of the monitor device 48 is displayed. and the training data image) is applied to the rotating magnetic heads 12a and 12b via the recording circuit 22, amplifier 18, and switch 14, and is recorded on the magnetic tape 10 (S8).

The set time of the timer 50 elapses, or the memory 36
S8 is continued until all stored images have been read out, and the process proceeds to the next job due to the passage of time or the memory limit being exceeded (S9). Instead of specifying the recording period using the timer 50, index hoods may be inserted at the beginning and end of the text data, thereby controlling the recording on the magnetic tape 10.

As the memory 36, it goes without saying that other recording media or storage media that can be read and written at a predetermined rate can be used. Also, other recording/storage media can be used instead of the magnetic tape 10.

[Effects of the Invention] As can be easily understood from the above explanation, according to the present invention, two moving images that refer to each other can be reliably synchronized,
Moreover, simultaneous recording is possible on one recording medium. Therefore, it becomes very easy to compare two moving images in detail. Furthermore, since only one monitoring device and one recording system are required, there is an advantage that the configuration can be made at low cost.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the configuration of an embodiment of the present invention, FIG. 2 is an operation flowchart of FIG. 1, 10: Magnetic tape 12
a, 12b rotating magnetic head 22: recording circuit 20:
Regeneration circuit 26a. 26b, 26c, 26d: Input terminal 32: High efficiency encoding circuit 36: Frame memory 38: Control ID generation circuit 40 Near address control circuit 44: Image signal processing circuit 46: Electronic view finder 48: Monitor device 5o: Operation Key 52 system control circuit 54
: Control ID detection circuit 56: Timing signal generation circuit 58: Voice synthesis circuit 60: Speaker 62: Timer.

Claims (1)

[Claims] A first video signal is stored in a memory means having a storage capacity for multiple screens, and the first video signal is read out from the memory means at a predetermined timing, and the second video signal and the first video signal are read out from the memory means at a predetermined timing. A video recording device characterized by compositing and recording on a recording medium.