JPS63297046A - Frame memory device in video printer - Google Patents

Abstract

PURPOSE:To enable graphics or characters to be written on an obtained image plane by a printer etc., by a method wherein an input means rewriting the information of an image memory is provided and a control circuit rewrites the data of a static image plane stored in the image memory according to a signal inputted by the input means. CONSTITUTION:Composite signals imparted by a television receiver etc. are separated per color, converted to digital signals by every color signal in an A/D conversion circuit 1, stored in an image memory 2, converted again to analog signals in a D/A conversion circuit 3, and outputted. To a control circuit 4, an input means 5 is connected for rewriting the information in the image memory 2. As the input means 5, for example, a joy stick device is used. The input means 5 shifts a cursor, which was displayed according to data for one static image plane stored in a frame memory device on an image plane of a monitor connected to, for example, a video printer, and outputs a signal for drawing graphics or characters on the image plane to the control circuit 4. In this manner, arbitrary graphics or characters can be inserted into the static image plane to be printed out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a frame memory device used in a video printer, etc., and more particularly to a frame memory device for a video printer that can write a single figure, character, etc. on a still screen. It is something.

C Conventional Example] In recent years, various video printers have been proposed for new media. This video printer uses an A/D conversion circuit to digitize a composite signal obtained by, for example, a television receiver or the like for each color signal such as R, G, and B, and stores it in an image memory. The stored one still screen is converted back into an analog signal by the D/A conversion circuit and output. Conversion timing of these A/D conversion circuits and D/A conversion circuits, writing of image memory,
Read control is performed by a control circuit (CPU). One still screen obtained in this manner is printed out using a video printer.

[Problems to be Solved by the Invention] Incidentally, in devices such as video game devices, the contents of the screen can be easily controlled using a simple input device I (for example, a joystick device). ,
The video printer described above stores one still screen based on the composite signal input in the frame memory device, and outputs that one still screen as it is, so any figure can be printed on that one still screen. I was unable to enter characters. In particular, this can be a drawback for video printers aiming for new media.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a frame memory device that allows figures, characters, etc. to be written on a screen obtained by a printer or the like.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides an A/D that converts a color signal obtained by color-separating a composite signal into a digital signal.
a conversion circuit, an image memory for storing one screen of the digitized composite signal, a D/A conversion circuit for converting the stored digital signal into an analog signal, and the A/D conversion and D/A conversion circuit; A frame memory device for a video printer, comprising a control circuit for controlling conversion timing, writing and reading of the image memory, etc., and comprising input means for rewriting the contents of the image memory. , the control circuit is.

The still screen data stored in the image memory is rewritten based on the signal input by the input means.

[Function] That is, among the screens displayed on the monitor device using the input composite signal, one still screen printed out by the frame memory device of the video printer becomes a frame.
stored in a memory device.

The contents of the frame memory device are rewritten using the input means. In this case, data such as figures and characters are written into the frame memory device by operating the input means.

[Example] Embodiments of the present invention will be described below based on the drawings.

In the figure, the composite signal obtained by a television receiver, etc. is separated into colors, and each color signal such as R, G, B, etc.
The image is digitized by the /D conversion circuit 1 and stored in the image memory 2. The stored data for one still screen is D
/A conversion circuit 3 converts the signal into an analog signal again and outputs it. These A/D conversion circuits 1. Conversion timing of the D/A conversion circuit 3 and control of writing and reading of the image memory 2 are performed by a control circuit (CPU) 4.

An input means for rewriting the contents of the image memory 2 is connected to the control circuit 4. In addition.

This input means 5 may be, for example, a joystick device currently available on the market. ! 5 is displayed based on one still screen worth of data stored in the frame memory device.
For example, a signal for moving a cursor on the screen of a monitor device (not shown) connected to a video printer and drawing figures or characters on the screen is output to the control circuit 4. Further, the sub-bus 4a of the control circuit 4 is provided with a working memory 6 that temporarily stores still screen data stored in the image memory 2 when the joystick device 5 is operated.

Next, the operation of the frame memory device of the video printer configured as described above will be explained.

First, under the control of the control circuit 4, an input composite signal (video signal) is sampled by the A/D conversion circuit 1 and converted into a digital signal, and data for one still screen of the digitized composite signal is used for image processing. memory 2
The data for one still screen is stored in D.
/A conversion circuit 3 and converted into an analog signal.

The composite signal passed through this frame memory device is
input to a monitor device connected to a video printer.

That is, the frame memory device stores data for one still screen printed by a video printer,
The first still screen is displayed on the monitor device.

In such a state, the joystick device 5 is operated, for example, the joystick device 5 is operated. [If you press the push button provided in 5, a processing menu will be displayed on the screen of the monitor device. The joystick device 1i5
When, for example, character insertion processing is selected in the operation, the cursor spot on the screen of the monitor device moves according to the operation of the stick of the joystick device 5, and the trajectory of the movement is displayed on the screen, and the image memory 2. The contents of the image memory 2 are previously stored in the working memory 6 before the rewriting operation. Therefore, if you make a mistake in operating the joystick device 5, in order to restore the screen of the monitor device displayed by the operation to its original state, the data temporarily stored in the working memory 6 is used to restore the image memory 2. is rewritten.

By operating the joystick device 11E) in this way,
When you have finished writing the desired figures, 5 characters, etc. on the still screen to be printed on the video printer,
A push button provided on the joystick device 5 is operated. Then, what is displayed on the screen of the monitor device is determined to be the image to be printed by the video printer.

Therefore, if you insert arbitrary characters, such as words such as "Summer Greetings," into a still screen of a television or video that is being input to a video printer, the still screen containing the "Summer Greetings" will be printed out.

[Effects of the Invention] As explained above, according to the frame memory device of the present invention, arbitrary figures and characters can be inserted into a still screen printed by a video printer, etc., and the use of the video printer, etc. It has the great effect of expanding the range.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a frame memory device showing one embodiment of the present invention. In the figure, 1 is an A/D conversion circuit, 2 is an image memory, and 3 is a D
/A conversion circuit, 4 is a control circuit (CPU). 5 is a joystick device M (input means), and 6 is a working memory. Patent applicant Fujitsu General Co., Ltd. Agent Patent attorney Taku Ohara Yaguchi 8

Claims (2)

[Claims] (1) an A/D conversion circuit that converts a color signal obtained by color-separating a composite signal into a digital signal; and an image memory that stores one screen worth of the digitized composite signal;
D converting the stored digital signal into an analog signal
1. A frame memory device for a video printer, comprising: a /A conversion circuit; and a control circuit that controls timing of the A/D conversion and D/A conversion, writing and reading of the image memory, etc. , further comprising an input means for rewriting the contents of the image memory, and the control circuit rewrites still screen data stored in the image memory based on a signal inputted by the input means. A frame memory device for a video printer, characterized in that: (2) In claim (1), the input means is a joystick device, and the input means is a joystick device, and the image data is inputted using data such as a cursor position on a still screen displayed on a monitor device based on data in the image memory. A frame memory device for a video printer that rewrites the memory contents.