JPS6150469A - Video tape recorder - Google Patents

Abstract

PURPOSE:To attain titling with one set of a VTR by displaying superimposingly an inputted title on a video image reproduced by the VTR, converting a coded title into serial data at the same time and recording the title on a linear sound track while using the after recording function of the VTR. CONSTITUTION:In titling to a video-recorded tape, a reproduced video input signal is inputted to a synchronizing signal separation circuit 1 and a superimposing circuit 2. When a character code is inputted from a keyboard 4, a control circuit 5 allows a character generator 3 to generate a character and the superimposing circuit 2 superimposes the character on the video signal by using the synchronizing signal. When title input is finished and an after recording switch is depressed, the circuit 5 receives the after recording signal, converts serially the inputted title and outputs it to a linear sound recording section.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a video tape recorder that superimposes a character title input from a keyboard onto a recorded video.

Conventional configurations and their problems In recent years, the popularity of video tape recorders has increased, and their uses have continued to expand. Tellopers have been used to add arbitrary titles to recorded video and edit it. This involves preparing a title, converting it to a video signal using a camera, and compositing it with the original image.Recently, products that can do this on personal computers have been commercialized, but in both cases, it is difficult to One videotape recorder must be provided.

There are also some cameras that can generate a text title on the camera body and superimpose it on the video, but this must be prepared in advance at the time of shooting. Titles added using these conventional methods have the problem that they are always displayed when the video tape recorder is played back and cannot be removed.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a video tape recorder that can add video titles to recorded tapes using a single video tape recorder.

Structure of the Invention The present invention provides a keyboard for inputting arbitrary characters, a character generator for generating characters according to a character signal input from the keyboard, a synchronization signal separation circuit for separating a synchronization signal from a video signal, and a synchronization signal separation circuit for separating a synchronization signal from a video signal. a control circuit that converts the character signal into serial data in synchronization with a synchronization signal and outputs the serial data to a linear audio recording section, and controls the character signal to be input to the character generator during playback; and the character signal and the video image. This video tape recorder is equipped with a superimpose circuit that superimposes the title input from the keyboard onto the video played by the video tape recorder, and simultaneously encodes the title. The title was converted to serial data, and the serial data was recorded on the linear audio track. When a tape is played back, a title corresponding to the serial data is generated by a character generator and displayed superimposed on the same played video, so that video titling can be done with a single video tape recorder.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a block diagram showing the main parts of a video tape recorder according to an embodiment of the present invention.

In FIG. 1, when a title is to be added to a recorded tape, a reproduced video input signal is input to a synchronization signal separation circuit 1 and a superfin pause circuit 2.

The synchronization signal separation circuit 1 extracts a vertical synchronization signal (VSync, ) and a horizontal synchronization signal (H5ync, ) from the composite video signal.
is separated and output to the character generator 3.

A character code address is output as a title from a keyboard 4, and a character input from the keyboard is generated. The generated character is superimposed on the video signal as a title by a superimpose circuit 2 using a synchronization signal and output.

When the title input from the keyboard 4 is completed and the dubbing switch (not shown) is pressed, a signal instructing the dubbing state is inputted to the control circuit 6. The control circuit 5 receives the dubbing signal, converts the title input from the keyboard 4 into serial data, and outputs the serial data to a linear audio recording section (not shown).

When the output is completed, the control circuit 6 outputs a signal for canceling the post-recording state to the system control circuit (not shown) of the video tape recorder, and ends the title recording.

Next, when reproducing a tape on which a title has already been recorded on a linear audio track, the title is input as serial data to the control circuit 5 via a linear audio reproducing section (not shown). The control circuit 6 outputs serial data and a character address to the character generator 3 to generate a title. Since the title is synchronized with the simultaneously reproduced video signal, it is superimposed and output by the superimpose circuit 2, and displayed on, for example, a television screen (not shown). Since the title is generated by the character generator 3, it can also be erased from the television screen using the display off switch 6.

Note that the audio is played from a high-fidelity audio track.

Effects of the Invention As described above, according to the present invention, video titles can be added to a recorded tape using one video tape recorder without using two video tape recorders.
Furthermore, even if you do not want to display the title, you can easily erase it from the screen.

[Brief explanation of the drawing]

The figure is a block diagram of the main parts of a video tape recorder according to an embodiment of the present invention, with titles showing the functional parts. 1... Synchronous signal separation circuit, 2... Superimpose circuit, 3... Character generator, 4...
...Keyboard, 5... Control circuit, 6...
...Display off switch.

Claims (1)

[Claims] a keyboard for inputting arbitrary characters; a character generator for generating characters according to character signals input from the keyboard; a synchronization signal separation circuit for separating a synchronization signal from a video signal; a control circuit that converts a character signal into serial data and outputs it to a linear audio recording section and inputs the character signal to the character generator during playback; and a superinput circuit that superimposes the character signal and the video signal. A video tape recorder comprising a pause circuit.