JPH0377493A - Video printer - Google Patents

Abstract

PURPOSE:To observe a picture during print at present and a picture inputted at present simultaneously by providing control means controlling a changeover circuit based on a prescribed synchronizing signal and outputting a synthesis video signal between a memory picture data and a picture data from the changeover circuit. CONSTITUTION:A picture data 7 inputted externally and a memory picture data 9 for print outputted from a memory circuit 2 are switched and fed to a changeover circuit 4 giving an output to a monitor and a control circuit 5 controlling the changeover circuit 4 is provided based on a synchronizing signal 8 from a video signal processing circuit 1, the picture during print at present is synthesized in matching with the timing of the picture inputted at present and outputted onto the monitor. Thus, the picture 14 in print at present and a picture 13 being inputted at present are observed simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a video printer device, and particularly to an improvement in its image display function during printing.

[Conventional technology]

FIG. 3 is a block circuit diagram showing the configuration of a conventional video printer device. In the figure, 1 is a video signal processing circuit that receives an input video signal 6, processes it and converts it into image data, and 2 is a video signal processing circuit that receives the input video signal 6 and processes it into image data. a memory circuit that stores image data 7;
4 is a switching circuit that switches between the memory image data 9 from the memory circuit 2 and the image data 7 and outputs the output video signal 11; 5 is a switching circuit that sends a memory control signal to the memory circuit 2 and a switching signal to the switching circuit 4; This is a control circuit that outputs 10 and controls these circuits. A transfer device 3 receives memory image data 9 and prints the image stored in the memory circuit 2 onto paper.

Next, the operation will be explained.

The video signal processing circuit 1 processes the input video signal 6 and converts it into image data 7, which is then sent to the memory circuit 2 and the switching circuit 4.
Enter. The memory circuit 2 stores the image data 7 in response to a memory control signal 12 from the control circuit 5. When printing, the memory image data 9 is transferred from the memory circuit 2.
is sent to the transfer device 3, and the image stored in the memory circuit 2 is printed on paper. Further, at this time, the switching circuit 4 switches between the memory image data 9 and the image data 7 based on the switching signal 10 from the control circuit 5, and outputs it as an output video signal 11 to a monitor (not shown).

[Problem to be solved by the invention]

However, since conventional video printer devices simply switch between memory image data 9 and image data 7 and output them to the monitor, there is a problem in that only one of memory image data 9 and image data 7 can be viewed. was there. In other words, when printing takes a long time, such as with a video printer, it is not possible to view the current print image (memory image) and the current input image (through image) at the same time. There was a problem in that it was very inconvenient to have to switch between the through image and the through image.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a video printer device in which an image currently being printed and an image currently being input can be viewed at the same time.

[Means to solve the problem]

The video printer device according to the present invention includes a switching circuit that switches between image data input from the outside and memory image data for printing output from the memory and outputs the same to a monitor. A control circuit is provided to control the switching circuit, and the memory image data and image data are combined.

[Operation] In this invention, since the image currently being printed and the image currently being input are combined at the same timing and output to the monitor, the print image being printed and the image currently being input are You can view the input image at the same time.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block circuit diagram showing the configuration of a video printer device according to an embodiment of the present invention. In the figure, the same symbols as in FIG. 3 indicate the same or corresponding parts, and 50 indicates a memory control signal to the memory circuit 2. 12 and also outputs a switching signal 10 based on the synchronization signal 8 from the video signal processing circuit 1 to the switching circuit 4. Here, the switching circuit 4 outputs the memory image data 9 and the image data as necessary. 7 and output the combined output video signal 11 to a monitor.

Next, the operation will be explained.

During printing, the control circuit 50 outputs the switching signal 10 in accordance with the timing of the synchronization signal 8, and the switching circuit 4 switches between the memory image data 9 and the image data 7 to produce an image (through image) corresponding to the image data. 13 and the image (memory image) 14 corresponding to the memory image data 9. Figure 2 is a diagram showing the combined image. Print image 1
4 is inserted.

In this way, in this embodiment, in addition to the switching circuit 4 that switches between the image data 7 input from the outside and the memory image data 9 for printing output from the memory circuit 2 and outputs the same to the monitor, the switching circuit 4 also performs video signal processing. Synchronization signal 8 from circuit l
A control circuit 50 is provided to control the switching circuit 4 based on the timing of the image currently being printed, and outputs the image to the monitor in accordance with the timing of the currently input image. You can view the image inside and the currently input image at the same time.

In the above embodiment, the image being printed (memory image) 14 is inserted into the image being input from the outside (through image) 13 and displayed, but this may be reversed; Through inside! 13 may be fitted, as long as both can be seen on the screen at the same time.

Further, in the above embodiment, the print image (memory image) that is displayed at the same time as the through image during printing is displayed as a still image, but the display of the print image may also be a display that changes the image according to the scanning of the print. good.

[Effects of the Invention] As described above, according to the present invention, in addition to the switching circuit that switches between image data input from the outside and memory image data for printing output from the memory and outputs the same to the monitor, , a control means for controlling the switching circuit based on a predetermined synchronization signal is provided, and a composite video signal of the memory image data and the image data is output from the switching circuit, so that the image currently being printed and the currently input image are output from the switching circuit. This has the effect of allowing you to view the current image at the same time, allowing you to know two pieces of video information at the same time. Particularly in the case of a video printer, since printing takes a long time, being able to view both images is very effective.

[Brief explanation of drawings]

FIG. 1 is a block circuit diagram of a video printer according to an embodiment of the present invention, FIG. 2 is a diagram for explaining image display during printing by the video printer according to an embodiment of the present invention, and FIG. FIG. 1 is a block circuit diagram showing 1Fli of a conventional video printer device. 1... Video signal processing circuit, 2... Memory circuit, 3.
...Transfer device, 4...Switching circuit, 50...Control circuit, 13...Currently input image (through image), 1
4... Image currently being printed (memory image). Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] (1) A video printer device that processes an input video signal to print an image and outputs image data to a monitor, comprising: a video signal processing circuit that processes the input video signal and outputs image data; a storage means for storing data; a printing means for receiving memory image data from the storage means and printing an image corresponding to the data on paper; and switching between the image data and the memory image data and outputting the same to the monitor. A video printer device comprising: a switching circuit, the switching circuit being controlled based on a synchronization signal from the video signal processing circuit to synthesize the memory image data and the image data.