JPS59226577A - Printer of television receiver - Google Patents

Abstract

PURPOSE:To eliminate miscopying due to erroneous operation in a device that prints on image or character of character broadcasting by designing so that the content of display is copied by depressing either key when the character is displayed on a picture plane. CONSTITUTION:If the content of display of a CRT9 is only an image, a CPU6 outputs a print change-over signal for image even when either of two copy keys 4a, 4b is depressed, and consequently, multiplexers 7, 14 are switched to select output from an A/D converter 3 and clock pulse for image. When the content of display is only characters of character broadcasting, multiplexers 7, 14 are switched for character broadcasting when either of keys 4a,4b is depressed. The gradation density signal Vd of the video signal or character broadcasting signal D is written in an image memory 5, and read out by the CPU6 and printed out by a printer 8.

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 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 printer device for a television receiver that can automatically make a hard copy of television screen images by writing to AM and then reading it.

By the way, text broadcasting has recently been planned as a form of television broadcasting, and this will also broadcast text such as weather forecasts and news, and this will be superimposed on normal video on a cathode ray tube, or just the text will be projected. That is what it is. In such teletext broadcasting, the text information data is transmitted by inserting the text information digital data into the vertical blanking period of the television signal.
On the receiving side, on the other hand, these character information data are temporarily stored in the memory of a teletext decoder, and the decoder converts them into signals that can be displayed on a CRT and displays them on a screen.

The inventor of the present invention has already developed a device that can make hard copies of the text of such teletext using the above-mentioned printer device, and when using such a printer device, when it is desired to copy the video or the text of the teletext, it is necessary to I press the copy key for video 1 character broadcasting to print it out. However, with this device, if you accidentally press the copy key for text broadcasting when you want to copy the video displayed on the screen, a problem arises in that if you accidentally press the copy key for teletext, all (different characters) will be printed out from the desired video.

The present invention has been made in view of the above, and is a printer device that prints out text for video or teletext. When characters are displayed on the screen, press either of the above two copy keys to copy the displayed content, and the screen display is set to a multiplexed video (hereinafter referred to as super mode) that includes the video and teletext characters. ), by making the video or characters independently copied using the copy keys for the nine video character broadcasts, the desired image can be printed out with a simple copy command operation. It is an object of the present invention to provide a printer device for a television receiver that can eliminate copy mistakes caused by erroneous operations.

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 the figure, 1 is a television receiver circuit that extracts a video signal V from a composite video signal containing a video signal (■) and a teletext signal, and displays each signal on a CRT; 2 is a television receiver circuit that extracts a teletext signal from the composite video signal; This is a teletext decoder that decodes and supplies the above to the television receiver circuit 1 and generates display mode signals a and b. This is to inform the CPU 6, which will be described later, which of the super modes it is in. 3 is an A/D converter that converts the above-mentioned video signal ■ into a gradation density signal Vd, 4 is a copy key that gives a command to print out the video or text for teletext, 4a is for video, and 4b is for teletext. This is a copy key. 5 is a video memory for storing a video gradation density signal Vd or a teletext signal; 6 is a display mode signal and a copy key 4;
In response to the commands a and 4b, a print switching signal 20 is generated to select whether to print out the video or the text of the teletext 7, and the gradation density signal Vd or the teletext signal in the video memory 5 is generated. CPU, 7
is a first multiplexer which sends either the gradation density signal Vd from the A/D converter 3 or the teletext signal from the teletext decoder 2 to the video memory 5 in accordance with the print switching signal 20; be.

Further, 1O is a write address control circuit that provides a write address signal A to the video memory 5, and in this write address control circuit 10, 11 generates a timing for writing the gradation density signal Vd to the video memory 5. a video clock pulse generator; 12 a character clock pulse generator for generating timing for writing a teletext signal; 13 the clock pulse generator 11;
a write address counter that supplies the address signal A to the video memory 5 at any timing of ゜12;
Reference numeral 14 denotes a second multiplexer which supplies the write address counter 13 with the video clock pulse or the character clock pulse depending on the command from the changeover switch 4. 8 is a printer that prints out the signals read out by the CPU 6; 9 is a printer that prints out the signals read out by the CPU 6; It is a CRT that displays in the mode.

Next, the operation will be explained.

When the composite video signal is received by the television receiver, the signal is input to the teletext decoder 2 and the television receiver circuit 1, and the teletext decoder 2 converts the teletext signal into
Further, a video signal V is taken out in the television receiver circuit l. And the characters of the video 1 character broadcast selected by the selection switch.

Or both are displayed on the CRT 9. At this time, the teletext signal is inserted in the form of digital data into the vertical blanking period of the television signal, and after being stored in the memory of the decoder 2, the teletext signal is The signal is converted into a signal that can be displayed on the CRT 9 and displayed on the screen.

When only the video or only the text of the teletext is displayed on the screen, the display mode signals a and b of the teletext decoder 2 are "L", "L", "H", and 'H, respectively.
'' is output and receives such a display mode signal (i is any copy key 4a for video 2 and 1 character broadcasting.

Even if 4b is pressed, a print switching signal 20 corresponding to the display contents on the screen is output.

In other words, if the current display content on the CRT9 is only video, the CP
In response, U6 outputs a video print switching signal regardless of which of the two copy keys 4a and 4b is pressed,
As a result, the first multiplexer 7 is connected to the A/D converter 3.
and the second multiplexer 14 is switched to select the clock pulses for the video. The video signal (2) from the television receiver circuit 1 is then converted into a gradation density signal V by the A/D converter 3.
d and is input to the video memory 5 through the first multiplexer 7. And this gradation density signal Vd
is written into the video memo IJ 5 at the timing of the pulse by the write address counter 13 that counts video clock pulses. The gradation density signal Vd in the video memory 5 is read out by the CPU 6 and printed out by the printer 8.

Further, if the display content of the CRT 9 is only the characters of the teletext broadcast, the CPU 6 outputs the teletext print switching signal in response to whichever of the two copy keys 4a, 4b is pressed. 1 multiplexer-7
selects the output of teletext decoder 2, and
The multiplexers 14 are each switched to select the character clock pulse. In this state, the teletext signal, which is digital data separated by the teletext decoder 2, is directly input to the video memory 5 through the first multiplexer 7. This teletext signal I] is written into the video memory 5 at the timing of the pulses by the write address counter 13 that counts the character clock pulses. The subsequent reading and printing operations are the same as above.

Next, when the CRT screen is in super mode, the display mode signals a and b of the teletext decoder 2 are "H" and 'L'.
In this case, the CPU 6 is configured so that when the video copy key 4a is pressed, only the video on the screen is copied, and when the teletext copy key 4b is pressed, only the text of the teletext on the screen is copied. 1 above so that it is copied.
．． A print switching signal 20 is output to the second multiplexer 7.14.

The switching operations, writing, and reading operations at this time are exactly the same as those in the case where only the video or text of the teletext broadcast is displayed on the screen described above.

In the device of this embodiment, when the display content on the CR7 screen is only video or teletext text, the display content is copied by pressing either of the two video text text broadcast copy keys. When the viewer wants to print out the CR7 screen, there is no need to distinguish between the two copy keys, and the viewer can simply press either copy key to print out the desired image. In addition, when the display content is in super mode, you can obtain the desired printout of the video or text of the teletext by pressing the copy key of the 9 video text copy keys that you want to output. It's convenient.

As described above, according to the present invention, in a printer device that prints out characters of video or teletext, CR7
When the display content on the screen is a video or text for teletext, pressing any of the copy keys for video single character broadcast will copy the display content, and if the display content is in super mode, the above video will be copied. Since the video or the characters of the teletext are independently copied using the copy keys for two teletexts, it is possible to print out a desired image with a simple copying operation.

[Brief explanation of drawings]

The drawing is a block diagram of a printer device for a television digital receiver according to an embodiment of the present invention. 1... Television receiver circuit, 2... Teletext decoder,
3... A/D converter, 4a, 4b... Copy key for video single character broadcasting (first and second copy keys), 5.
...Video memory, 6...CPU (switching control means, readout control means), 7...(first) multiplexer,
8...Printer, 10...Write address control circuit. Agent Masuo Oiwa

Claims (1)

[Claims] (1) A printer device that prints out images from a television receiver or text from teletext, which extracts a video signal from a composite video signal. A television receiver circuit that displays a teletext signal or a multiplexed video signal of both on a picture tube, and a television receiver circuit that extracts a teletext signal from the composite video signal, decodes it, and supplies it to the television receiver circuit, and displays the content currently displayed on the picture tube. a teletext decoder that generates a display mode signal indicating whether the video is a single teletext character or a multiplexed video of both; an A/D converter that converts the video signal into a gradation density signal; The first step is to give a command to print out the text of the broadcast. A second copy key, a video memory for storing a video gradation density signal or a teletext signal, and when the display mode signal is input and the display content of the picture tube is either video or teletext characters, Above 1. When any command of the second copy key is input, a print switching signal for the display content is generated, and when the display content is a multiplex video, a print switching signal for video or teletext is generated in accordance with the command of the copy key. a multiplexer for sending the gradation density signal from the A/D converter or the teletext signal from the teletext decoder to the video memory in response to the print switching signal; A write address control circuit for supplying a write address signal to the video memory, readout control means for reading out the gradation density signal or teletext signal in the video memory, and a printer for printing out the readout signal. printer device for television receivers.