JPS59228480A - Printer device of television receiver - Google Patents

Abstract

PURPOSE:To interrupt the printing of the current picture on a screen and to start printing a new picture on the screen by generating a copy command when the picture to be printed appears during writing to a video memory and printing. CONSTITUTION:An A/D converter 1 samples a video signal (v) by using the pulse (p) of a clock pulse generator 7 and outputs a gradational density signal d1. A write control circuit 3 writes the signal d1 in the video memory 2 at the timing of the pulse (p) under a write command c2. The command c2 to the circuit 3 is generated by a CPU4 when a copy key 6 is operated. When the writing to the memory 2 is completed, the CPU4 supplies a address (a) to the memory 2 to read a signal d2 out and outputs print data d3 to a printer 5. If a picture to be printed appears during the writing to the memory 2 or printing-out operation, a copy key 6 is operated to generate a command c1. Then, the CPU4 stops the writing to and reading from the memory 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printer device for a television receiver.

Generally, when a cooking program is being broadcast on a television receiver, you may want to write down the menu list and ingredients displayed on the screen. This was extremely inconvenient as the person had to take notes on the menu list, ingredients, etc. while looking at the screen 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 present inventor has already developed a printer device for a television receiver that can automatically make a hard copy of the image on the television screen by writing the HWJ density signal of the image on the television screen into a RAM and then reading it out. We are developing.

By the way, it would be very convenient for the viewer if such a plink device of a television receiver could print out the new image to be copied when the image to be copied appears while printing out the television screen. .

SUMMARY OF THE INVENTION Therefore, the present invention provides a printer device for a television receiver, in which when a copy command is input during printout in the printer device as described above, printing of the previous screen is stopped and printing of a new screen is started. is intended to provide.

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

The drawing shows a printer device for a television receiver according to an embodiment of the present invention, in which 1 indicates a video signal V to A.
2 is a video memory that stores the gradation density signal d1, and 3 is sent to the video memory 2 in response to a write command c2. A write control circuit 4 provides a write command c2 to the write control circuit 3 in response to a copy command C from a copy key 6, and outputs a read address a to the video memory 2. This is a CPU that outputs the read data d2 from the video memory 2 as print data d3.When the above copy command C1 is input during writing to the video memory 2 or printing out, this CPU immediately stops this and outputs the data d2 read from the video memory 2 as print data d3. It is designed to write into the memory 2 and print it out. 5 is a printer that prints out the read print data d3.

Note that 7 is the A/D converter l and the write control circuit 3.
A clock pulse generating circuit sl and s2 are horizontal and vertical synchronizing signals, respectively.

Next, the operation will be explained. The A/D converter 1 samples the video signal (2) using the clock pulse p of the clock pulse generation circuit 7, and outputs a gradation density signal d1.

The write control circuit 3 writes the m-level density signal dl into the video memory 2 at the timing of the clock pulse p according to the write command C2. This write control circuit 3 uses horizontal and vertical synchronization signals S1 and S2 to
Control is performed to write gradation density signals for 234 lines in the direction of the 0 pixel pixel surface to the correct address in the video memory 2.

The write command c2 of the write control circuit 3 is issued 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 read address a to the video memory 2, and reads 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, so that the printer 5 prints out the image on the television screen.

During writing to the video memory 2 (however, this is very short compared to the printout period) or when the video that the viewer wants to print appears consecutively during the printout, the viewer operates the copy key 6 to issue a copy command. All you have to do is say cl. Then, the CPU 4 stops writing to the video memory 2 or reading from the memo I72, and issues a write command c2 again to the write control circuit 3. As a result, a new screen is written to the video memory 2 by the write control circuit 3. When the writing is started, the new screen is successively displayed by the CPU 4, and the new screen is continuously printed on the printer 5 from the middle of the previous screen.

As described above, according to the present invention, when a copy command is input during printout, copying is stopped and a new screen can be printed out, which is very convenient for the viewer. Since only the video memory for one image is used, its structure is also very simple.

[Brief explanation of the drawing]

The drawing is a block diagram showing a printer device for a television receiver according to an embodiment of the present invention. □'2...Video memory, 3...Writing control circuit, 4...CPU (reading control circuit), 6...Copy key, 5...Printer. Agent Masuo Oiwa

Claims (1)

[Claims] +1) A printer device that prints out video from a television receiver, 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 the tone density signal; and a central processing unit that receives a command from the copy key, outputs a write command to the write control circuit, and reads out the tone density signal in the video memory. , and a printer that prints out the read tone density signal, and the central processing unit immediately executes the writing or printing when receiving a command from the copy key while writing to the video memory or printing out by the printer. A printer device for a television receiver, characterized in that printing is stopped, a write command is output to the write control circuit, and a gradation density signal is read from a video memory.