JP2627977B2 - Video TV system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VTR (video tape recorder), a camera-integrated VTR (video movie),
A video device such as an LDP (laser disk player) is combined with a television receiver, and various states (operation mode, tape count value, remaining tape amount, etc.) from the video device to the video device are combined. Is displayed on a display screen of a television receiver.

[0002]

2. Description of the Related Art FIG. 4 is a block diagram showing an electrical configuration of a conventional video television system of this kind.

In the figure, A is a video device, B is a television receiver, 2 is a video tape, 4 is a magnetic head, 6
Is a video signal processing circuit, 8 is an audio signal processing circuit, 8a is an audio signal output terminal, 10 is a video signal processing circuit including a video mixing circuit 12, 10a is a video signal output terminal, 14 is
Is a microcomputer for system control (Syscon), 1
6 is a motor drive circuit, 18 is a mechanism state detector, 2
0 is a tape count value detection unit, 22 is a tape remaining amount detection unit, 24 is a display unit such as an LCD (liquid crystal display device), 26
Is an operation unit, 30 is a tuner, 30a is an antenna input terminal, 32 is a video signal and audio signal detection circuit, 34 is a microcomputer for system control, 36 is a remote control receiving unit, 38 is a remote control amplifier circuit, 40 is a display data processing circuit, 42 is an audio signal switching / amplifying circuit, 42a is an audio signal input terminal, 44 is a video signal switching / amplifying circuit, 44a is a video signal input terminal,
46 is an audio signal connection cable, 48 is a video signal connection cable, 50 is an audio signal output terminal, 52 is a video signal output terminal, 54 is an audio signal output circuit, 56 is a video amplification circuit,
8 is a video mixing circuit, 60 is a video signal output circuit, 6
Reference numeral 2 denotes an operation unit.

In the display mode of television broadcasting, a television broadcasting signal input from an antenna input terminal 30a is selected by a tuner 30 and separated into a television audio signal and a television video signal by a detection circuit 32. The selection is made by the switching / amplifying circuit 42 and the video signal switching / amplifying circuit 44. The audio signal is guided to a speaker from an audio signal output circuit 54, and the video signal is displayed on a screen of a cathode ray tube via a video amplification circuit 56, a video mixing circuit 58, and a video signal output circuit 60. By operating the operation unit 62,
Display data processing circuit 4 via microcomputer 34 for syscon
0, a video signal for on-screen display such as a reception channel and time is generated.
At 8, the video signal is superimposed with the video signal of the television broadcast and displayed on the screen.

Next, the operation of the video television system during video playback will be described.

The microcomputer 14 for the system controller drives the motor drive circuit 16 based on a command from the operation section 26 to control the running of the video tape 2, and also detects a mechanism state detection section 18, a tape count value detection section 20, a tape remaining section, and the like. Information on the operation mode, the tape count value, and the remaining amount of the tape is fetched from the amount detection unit 22 and sent to the display unit 24 to be displayed, while being sent to the video mixing circuit 12 for superimposing.

A video signal picked up from the video tape 2 via the magnetic head 4 is demodulated in a video signal processing circuit 6. The demodulated signal is separated into an audio signal and a video signal by the audio signal processing circuit 8 and the video signal processing circuit 10. The audio signal undergoes a series of processes in the audio signal processing circuit 8 and is sent from the audio signal output terminal 8a to the audio signal input terminal 42a of the television receiver B via the audio signal connection cable 46. The video signal processing circuit 10
The reproduced video signal from the video tape 2 and the video device status video signal from the microcomputer 14 are superimposed. The superimposed video signal is sent from the video signal output terminal 10a to the video signal input terminal 44a of the television receiver B via the video signal connection cable 48.

On the television receiver B side, an audio signal switching / amplifying circuit 42,
The video signal switching / amplifying circuit 44 is switched to the video reproducing side. Further, an external dubbing VTR (not shown) and another display monitor (not shown) are connected to the audio signal output terminal 50 and the video signal output terminal 52. The audio signal input from the audio signal input terminal 42a is amplified by the audio signal switching / amplifying circuit 42, and then the audio signal output circuit 54
Is transmitted to a speaker (not shown), while being transmitted to a display monitor or a dubbing VTR via an audio signal output terminal 50.

The superimposed video signal input from the video signal input terminal 44a is supplied to the video signal switching / amplifying circuit 4
4 is displayed on a CRT via a video amplifying circuit 56, a video mixing circuit 58, and a video signal output circuit 60, and from a video signal output terminal 52 to a display monitor or a dubbing VTR (not shown).
Sent to

The video projected on the cathode ray tube of the television receiver B includes the video reproduced from the video tape 2 and the various states (operation mode, tape count value, etc.) of the video equipment A transmitted from the microcomputer 14 for the system controller. , Tape remaining amount, etc.) are superimposed images. While looking at the video image of the video device status, a tape point at which dubbing should be started is searched for, and a pause state is set.
By turning off the operation button of the on-screen display in the operation unit 26 in order to avoid recording in the above, the superimposition of the video device state video signal in the video mixing circuit 12 is released.

As a result, the video signal processing circuit 10 outputs only the reproduced video signal from the video tape 2. The reproduced video signal is transmitted to the dubbing VTR via the video signal output terminal 52, and dubbed and recorded. At this time, only the reproduced video from the video tape 2 is displayed on the CRT of the television receiver B, and the video device state video is not displayed.

A tape point at which dubbing recording should be stopped is confirmed in advance, and a tape point to be stopped is confirmed based on the tape count value and the remaining tape amount displayed on the display unit 24, and recording is performed on the dubbing VTR. When the tape point is reached, the dubbing V
Stop recording of TR.

[0013]

However, the prior art having such a configuration has the following problems.

When the video device A is a video movie, the display section 24 is usually constituted by an LCD (Liquid Crystal Display) and is difficult to see because the display area is small due to space restrictions. . Some video movie models do not have the display unit 24, in which case the end tape point of dubbing recording cannot be determined. After the extra dubbing recording, it is played back and stopped at a desired tape point, and the duplication recording is performed again. In the dubbing editing, since a number of splicing shots are performed, the operation is performed while switching ON / OFF of the operation buttons of the on-screen display each time, which is very troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and makes it easier to see a video image of a video device status by increasing the display size, and transmits a reproduced video signal to a dubbing VTR or the like. The video device status video can be viewed even in the state, and the troublesome operation of repeatedly turning on / off the on-screen display during dubbing recording can be eliminated.
The purpose is to provide a system.

[0016]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a television receiver which converts a video signal reproduced by a video device and a video device status video signal produced by the same video device. A video television system configured to be displayed in a superimposed state on the screen of the above, and configured to be able to take out a video signal from a video signal output terminal of a television receiver to the outside, wherein the video device The state video signal is transmitted from the video device to the television receiver by wireless transmission on a separate path from the reproduced video signal, and the video signal from the video device and the video device status video signal from the wireless transmission are transmitted to the television receiver. Superimposed and configured to be displayed on the screen of the television receiver, and From the image signal output terminal is characterized in that it has configured to retrieve the reproduced video signal received from the superimposition previous video equipment to the outside.

[0017]

According to the above arrangement of the present invention, the video signal of the video equipment status is transmitted from the video equipment to the television receiver by a different path from the reproduced video signal, that is, by wireless transmission, and the superimposed video to be displayed on the screen is displayed. The signal is generated not in the video equipment but in the television receiver, and the reproduced video signal before superimposition is separated from the video equipment status video signal, taken out from the video signal output terminal and supplied to a dubbing VTR or the like. Therefore, a reproduced video signal that does not include the video device status video signal is supplied to the dubbing VTR or the like while the on-screen display is specified and the video device status video is displayed together with the reproduced video.

[0018]

FIG. 1 is a block diagram showing an electric configuration of a video television system according to one embodiment of the present invention.

In FIG. 1, the same reference numerals as those of the prior art shown in FIG. 4 indicate the same parts, parts, and the like indicated by the reference numerals in the present embodiment, and therefore, the description thereof is omitted here. . In the present embodiment, the configuration different from the conventional example is as follows.

In the video equipment A, digital data of a video equipment status video signal is outputted from the microcomputer 14 for the system to a light emitting element 70 such as an infrared light emitting diode. In the case of the conventional example, the video mixing circuit 12 provided in the video signal processing circuit 10 is not adopted in principle. Also, the presence or absence of the display unit 24 does not matter.

In the television receiver B, the remote control receiver 36 receives an infrared remote control signal from a remote control device (not shown) to control the television receiver B.
The remote control receiving unit 36 also receives digital data of a video device status video signal wirelessly transmitted from the light emitting element 70 of the video device A. Of course, the positional relationship between the light emitting element 70 and the remote control receiver 36 is determined so as to be within a line-of-sight range where digital data can reach.

The digital data received by the remote control receiver 36 is converted into an analog video device state video signal by the display data processing circuit 40 and then sent to the video mixing circuit 58. The video device status image generated in this way is set in advance so as to be displayed at a designated position for each item on the CRT screen 80 of the television receiver B as shown in FIG. .

FIGS. 3A to 3C show an example of a digital data format of a video device status video signal.

When the command bit is 00, an operation mode, a tape running speed, a timer, and a dew state are displayed. As shown in FIG. 3B, the operation modes include eight modes such as stop, playback, rewind, and fast forward.
It is determined by bit data. Figure 3
As shown in (c), the standard mode and the triple mode are defined by 4-bit data. The use, non-use and presence / absence of dew of the timer are also determined by 4 bits as in the case of the speed.

When the command bit is 01, a tape count value is displayed. The tape count value is a number from 0 to 9
Is determined by 4 bits, and is represented by a total of 5 digits (20 bits). When the command bit is 10, the remaining tape amount is displayed. The remaining tape capacity represents one digit with 4 bits, and 1
The three digits of the 00 minute unit, the 10 minute unit, and the 1 minute unit are displayed. When the command bit is 11, it indicates the selected channel of "video", which is the display mode of the reproduced video signal from the video device A, or when the displayed video is a television broadcast.

Next, the operation of the video television system configured as described above will be described.

In the video equipment A, a video signal picked up from the video tape 2 via the magnetic head 4 is demodulated in a video signal processing circuit 6, separated into a video signal in a video signal processing circuit 10, and output to a video signal output terminal 10a. The video signal is transmitted to the video signal input terminal 44a of the television receiver B via the video signal connection cable 48. In the television receiver B, the input reproduced video signal is amplified by the video signal switching / amplifying circuit 44 and then supplied from the video signal output terminal 52 to the external dubbing V.
The signal is supplied to a TR and a display monitor, and is also supplied to a video mixing circuit 58 via a video amplification circuit 56.

On the other hand, in the video device A, the microcomputer 14 for the system controller includes a command given to the motor drive circuit 16 and a mechanism state detecting unit 18 and a tape count value detecting unit 2.
0, digital data of a video device state video signal such as an operation mode, a tape count value, and a remaining tape amount is created in accordance with the state obtained from the remaining tape amount detecting unit 22 and transmitted to the light emitting element 70. The light emitting element 70 performs an ON / OFF (flashing) operation according to the digital data, and transmits an infrared remote control signal to the remote control receiving unit 36 of the television receiver B. Digital data corresponding to the infrared remote control signal received by the remote control amplifier circuit 38 is generated, amplified by the remote control amplifier circuit 38, and an analog video device state video signal is generated by the display data processing circuit 40. Then, the video device state video signal is supplied to the video mixing circuit 58.

The video mixing circuit 58 superimposes the reproduced video signal input from the video signal switching / amplifying circuit 44 and the video device status video signal input from the display data processing circuit 40. The superimposed video signal is sent to the CRT screen 8 via the video signal output circuit 60.
It is projected on 0.

As described above, the video signal switching / amplifying circuit 4
4 is supplied to the video signal output terminal 52 and supplied to an external dubbing VTR or the like, is only the reproduced video signal from the video tape 2 and is independent of the video device status video signal. The video device status video signal is transmitted by digital data wireless communication between the light emitting element 70 and the remote control receiver 36 to the television receiver B.
The video signal is superimposed on the reproduced video signal in a video mixing circuit 58 arranged at a position not directly related to the video signal output terminal 52 in terms of the circuit configuration. Therefore, as shown in FIG. 2, the video device status image is displayed on the CRT screen 80 in a large size, and the reproduced video signal is output from the dubbing VTR connected to the video signal output terminal 52 while the video device status image is displayed as such. Even if dubbing recording is performed, recording that does not include the video device status video can be performed. Since dubbing recording can be performed while the video device state video is displayed, the operation unit 26 is operated as in the conventional example.
ON of the on-screen display operation button
It is not necessary to perform a troublesome operation such as repeating / OFF.

The operation of the operation unit 62 allows the video device A to display the video device status image from the video device A side.
It is possible to arbitrarily switch between a state in which the reception channel of the television receiver B is displayed and a state in which nothing is displayed. In addition, the light emitting element 70 is operated by the operation unit 26.
It is also possible to stop the wireless transmission of the video device status video signal from.

In addition to the structure for transmitting the digital data of the video equipment status video signal from the light emitting element 70, the video equipment status video signal is converted to a video signal processing circuit as shown by a two-dot chain line in FIG. 10 may be configured to be input to a built-in video mixing circuit (not shown).

[0033]

As described above, according to the present invention, the video equipment status video signal is transmitted from the video equipment to the television receiver by wireless transmission, which is a different path from the reproduced video signal, and is displayed on the screen. Since the superimposed video signal to be produced is created not in the video equipment but in the television receiver, the superimposed video signal is displayed on the screen of the television receiver together with the video equipment status video on-screen. The reproduced video signal before the pause can be separated from the video device status video signal and supplied to a dubbing VTR or the like. In addition, the video device status image is displayed on the screen of the television receiver having a sufficiently large display area, so that the image can be sufficiently viewed. Then, since the dubbing recording can be performed with the video device state video being displayed, the end tape point of the dubbing recording can be recognized at a glance, and the on / off display operation button does not need to be repeatedly turned on / off. Dubbing editing work can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical configuration of a video television system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a display position of a video device status image on a CRT screen of a television receiver in the embodiment.

FIG. 3 shows a format of digital data of a video device status video signal wirelessly transmitted in the embodiment.

FIG. 4 is a block diagram showing an electrical configuration of a conventional video television system.

[Explanation of symbols]

 Reference Signs List A video equipment B television receiver 10 video signal processing circuit 14 microcomputer for syscon 16 motor drive circuit 18 mechanism state detecting section 20 tape count value detecting section 22 remaining tape detecting section 34 microcomputer for syscon 36 remote control receiving section 40 display data processing Circuit 44 Video signal switching / amplifying circuit 52 Video signal output terminal 58 Video mixing circuit 70 Light emitting element 80 CRT screen

Claims (1)

(57) [Claims] 1. A television device, wherein a video signal reproduced by a video device and a video device status video signal created by the same video device are displayed in a superimposed state on a screen of a television receiver. A video television system configured so that a video signal can be taken out from a video signal output terminal of a John receiver,
The video device status video signal is transmitted from the video device to the television receiver by wireless transmission on a separate path from the playback video signal, and the video signal from the video device and the video device status video signal from the wireless transmission are transmitted to the television receiver. Superimposed on the receiver and configured to be displayed on the screen of the television receiver,
A video television system wherein a reproduced video signal received from a video device before superimposition is taken out from the video signal output terminal.