JPS60223390A - Printer of television signal - Google Patents

Abstract

PURPOSE:To prevent misoperation by avoiding print of a new pattern even when a copy command is inputted during print-out. CONSTITUTION:An A/D converter 1 uses a clock pulse (p) of a clock pulse generating circuit 7 so as to sample a video signal (v) and output a gradation density signal d1. A write command c2 of a write control circuit 3 is generated from a CPU4 when a viewer operates a copy key 6, and the gradation density signal d1 is written in a video memory 2 in the timing of the said clock pulse (p). Even when the copy key 6 is operated during the write to the video memory 2 (however, very short in comparison with print-out period) or during print-out, the CPU4 does not generate the write command c2 so as to continue the write to the video memory or print-out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a printer device for television signals.

[Prior art]

Generally, when using a Ten Vision receiver, for example, when a cooking program is being broadcast, you may want to write down the menu list, ingredients, etc. that are displayed on the screen. This was very inconvenient as the person had to take notes on the menu list, ingredients, etc. while looking at the uniform each time. In addition, if the cooking program mentioned above is recorded on a VTR, it can be played back again, but even in that case, it is necessary to search for the necessary screen and play it back statically, which is a cumbersome operation. .

Therefore, the inventor of the present invention has determined that the gradation density signal of the image on the television screen is R.
We have already developed a television signal printer device that can automatically make hard copies of television screen images by writing to AM and then reading them.

By the way, in such a television signal printer device, if you accidentally press the copy key while printing the television screen, the signal being printed will be interrupted and printing of a new screen will start, resulting in the desired information not being printed. There was a drawback that it was no longer possible.

[Summary of the Invention] The present invention provides a television signal printer as described above, which prevents printing of a new screen even if a copy command is input during print-adjustment. be.

[Embodiments of the invention] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In the figure, 1 is an A/D converter that A/D converts the video signal V and outputs, for example, a 4-pit gradation density signal di; 21-j a video memory that stores the gradation density signal 8dl; 3I'; In response to the i write command 02, the video memory 2
A write control circuit 4 controls writing to the write control circuit 3 in response to a copy command 01 from the copy key 6.
A central processing unit (a central processing unit) which gives a write command c2 to the video memory 2, outputs a read address a to the video memory 2, and outputs data d2 extracted from the video memory 2 as print data d3.
This FcPU (hereinafter referred to as FcPU) determines whether writing to the video memory 2 or printing is in progress, and if these are in operation, the above copy command c1 is executed.
The configuration is such that even if input is input, writing to the video memory 2 and printing thereof are not performed. 5 is a printer that prints out the read print data d3. Note that 7 is a tally pulse generating circuit for supplying tally pulses p to the A/D converter 1 and write control circuit 3, and B1.82 are horizontal and vertical synchronizing signals, respectively.

Next, the operation will be explained. The A/D converter 1 samples the video signal V using the tally pulse f of the tally pulse generating circuit 7, and outputs a gradation density signal d1.

The write control circuit 3 writes the gradation density signal d1 into the video memory 2 at the timing of the clock pulse p according to the write command 02. This write control circuit 3 uses horizontal and vertical synchronizing signals e1 and 82 to
Control is performed so that the gradation density signal for 0 pixel and 234 lines in the vertical direction is written to the correct address in the video memory 2.

And the write finger 4 of this write control circuit 3? c2 is generated from the CPU 4 when the viewer operates the copy key 6.

When the writing to the video memory 2 is completed, the CPU 4 gives the successive address a to the video memory 2, and writes the gradation density signal d2.
Read out. Then, the CPU 4 inputs the gradation density signal d2 as print data d3 to the printer 5, thereby printing out the image of the i-TV image on the printer 5.

Here, even if the copy key 6 is operated during writing to the video memory 2 (however, this is very short compared to the printout period) or during printing, the CPU 4 does not display the writing finger 4? If writing to the video memory 2 or printing out continues without issuing c2, the result is K.

(Effects of the Invention) As described above, according to the present invention, even if a copy command is input during printing, printing can be continued, and erroneous operations can be prevented.

[Brief explanation of the drawing]

The drawing is a block diagram showing a television signal printer apparatus according to an embodiment of the present invention. 2... Video memory, 3... Write control circuit, 4...
・CPU (Central Processing Unit), 6...Copy key, 5.
...Printer. Agent Masuo Oiwa

Claims (1)

[Claims] (1) A printer device that prints out video of a television signal, which includes a video memory that stores the gradation density signal of the video to be printed out, and a video memory that stores the gradation density signal of the video to be printed out, and a a write control circuit that controls writing of tone density signals; and a central processing unit that receives commands from the copy key, outputs write commands to the write control circuit, and outputs tone density signals in the video memory. and a printer that prints out the read tone density signal, and when the central processing unit receives a command from the copy key during writing to the video memory or printing out by the printer, the central processing unit prints out the read tone density signal. A television signal printer device characterized by not outputting a write command to a write control circuit.