JPH0484589A - Multiple picture synthesizer - Google Patents

Abstract

PURPOSE:To obtain detailed explanation relating to content of broadcast by synthesizing each TV signal of plural channels in multiple so as to be displayed on a screen of a reception terminal equipment and sending each simultaneously. CONSTITUTION:A transmission signal is converted into a digital signal by an A/D converter section 11 and number of scanning lines of the signal is decreased to the scanning line number to be displayed on a television pattern display section 21 by a scanning line compression section 12 and synthesized as a digital picture signal by a multiple picture synthesis section 13. In this case, a synchronizing signal is outputted from an internal synchronizing signal generating section 14 to a multiple picture synthesis section 13, received character information is generated by a character generating section 15 and synthesized with a synthesis picture signal from the multiple picture synthesis section 13. Then a scroll control section 17 scrolls only character information and a digital synthesis signal from the synthesis section 16 is converted into a base band NTSC signal by a D/A converter section and the result is sent to a CATV line and received patterns 22a-22l are displayed on a multiple synthesis screen section 22 of the television pattern display section 21. Thus, more detailed information guidance is implemented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multiple image synthesis device, and particularly relates to a multiple image synthesis device.
The present invention relates to a multiple image synthesizing device that synthesizes V signals into multiple images and transmits them to a line.

[Conventional technology]

Conventionally, this type of multiple image compositing device has multiple TVs.
It is configured so that multiple signals are combined into one screen signal, and the channel number of each 1V broadcast is superimposed on each TV signal to be sent out as a TV signal, and it can be used as a guide channel. It had become.

[Problem to be solved by the invention]

The conventional multiple image compositing device described above has multiple TVs.
It is configured to combine multiple signals into one screen signal, superimpose the channel number of each TV broadcast on each TV signal, and send it out as a TV signal, so it is possible to superimpose individual images. Since the characters displayed are small and the amount of information for explaining program-related information is small, there is a drawback that detailed explanations about the broadcast contents are insufficient.

[Means to solve the problem]

The multiple image synthesis device of the present invention includes a synthesis processing means for synthesizing TV signals of the plurality of display images in order to display the display images of the plurality of TV broadcasts independently on one display screen of a receiving terminal; information generating means for generating display image information while scrolling display image information regarding each of the plurality of display images; and composition control means for controlling the signal and the output composite image signal of the composition processing means to be combined into a single-screen signal for simultaneous display on the display screen and sent to a line connected to the receiving terminal. .

〔Example〕

Next, the present invention will be explained with reference to the drawings.

Fig. 1 is a block diagram showing one embodiment of the present invention, and Fig. 2 shows a plurality of images that are multiple compositely displayed on the TV screen display section of a television terminal that receives a TV signal transmitted using this embodiment. FIG. 3 is a diagram showing a divided display.

In FIG. 1, the multiple image synthesis device of this embodiment includes an A/D converter 11 that converts baseband NTSC signals of a plurality of TV broadcast reception signals and CAT broadcast transmission signals into respective digital signals. , multiple T
A scanning line compression unit 2 and a scanning line compression unit 12 are configured to reduce the total number of scans so that the received signals of V broadcasting and the transmitted signals of CATV broadcasting can be displayed multiple times on the TV screen display section of a television terminal. A multiple image synthesis unit 13 synthesizes compressed and digitized received signals of a plurality of TV broadcasts and transmission signals of CATV broadcasts using a synchronization signal generated by an internal frequency signal generation unit 14; A character generating section 15 generates character information regarding the original image to be displayed, and multiple image synthesis is performed so that the multiple image synthesized screen and the character information display screen are independently displayed on the TV screen display section of the television terminal. A synthesizing section 16 that synthesizes the signal and the display signal of character information, and a scroll that controls the character information from the character generating section 15 so that the character information generated by the character generating section 15 flows within the character information display screen. The control unit 17 converts the digital signal of the combined image signal from the combining unit 16 into a baseband NTSC signal and transmits it to CATV.
It also includes a D/A converter 18 that sends data to the line.

In FIG. 2, the television image signal transmitted from this embodiment is transmitted to the television screen display section 2 of the television terminal.
1 is displayed. The TV screen display section 21- displays multiple TVs.
Broadcast, CA, TV broadcast reception screens 22a, 22b-22
It is comprised of a multiple composite screen section 22 consisting of ρ, and a text information screen section 23 that displays explanations of these received screens as text information.

Next, the operation of this embodiment will be explained with reference to FIGS. 1 and 2.

A case will be described in which this embodiment is applied to guide channel broadcasting of multi-channel TV broadcasting at a CATV station.

The CATV station to which this embodiment is applied combines the guide channel screen with the multiple composite image section 22 and the text information screen section 23, as shown in FIG. 2, and sends it to each subscriber's television terminal via the CATV line. shall be sent.

The baseband NTSC signals of the plurality of TV broadcast reception signals received by the CATV station and the CATV broadcast transmission signals produced by the CATV station are processed by the A/D converter 1.
1, the scanning line compression unit 12 reduces the number of scanning lines necessary for display on the television screen display unit 2J shown in FIG. 2, and the multiple image synthesis unit 13 converts the signal into a digital image signal. be synthesized. At that time, a synchronization signal is output from the internal periodic signal generator 14 to maintain synchronization between each screen as a composite screen.
It is supplied to the multiple image composition section 1-3.

Separately, the screen of multiple TV broadcasts received and the T of your station
The text information of the explanation for the V broadcast screen is sent to the text generation unit 15.
The image signal is generated by the combining section 16 and combined with the combined image signal from the multiple image combining section]3. At this time, only the character information is scrolled by the scroll control section]7.

Synthesizer] The digital composite signal from 6 is sent to D/A converter 1
8, the signal is converted to a baseband NTSC signal and sent to the CATV line.

In each subscriber's television terminal connected to the CATV line, as shown in FIG.
TV broadcasts, CA, TV transmitted from ATV lines
The broadcast reception screens 22a to 22ρ are displayed at once, and their explanations and the like are displayed on the text information screen section 23.

〔Effect of the invention〕

As explained above, the present invention enables the receiving terminal to display each TV signal on the receiving terminal side in order to introduce information by multiple-combining the respective TV signals of a plurality of channels and transmitting them simultaneously so as to display them on one screen of the receiving terminal. This has the advantage that a plurality of TV signals can be viewed at once without having to select a signal. In addition, CA, which conducts multi-channel TV broadcasting,
When a TV station is used as a guide channel, the subscriber can easily search for a desired program without having to switch channels or look at a program guide on the subscriber's receiving terminal. Furthermore, by displaying information regarding individual TV signals using characters, two figures, etc. on the text information screen section of the receiving terminal, it is possible to introduce information regarding image contents in more detail than before. Also, CATV
When used in a station, it has the effect of displaying information controlled by the station, such as subscriber notifications and local advertisements, on the text information screen.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing one embodiment of the present invention, and Fig. 2 shows a plurality of images that are multiple compositely displayed on the TV screen display section of a television terminal that receives a TV signal transmitted using this embodiment. FIG. 3 is a diagram showing a divided display. ]]...A/D conversion section, ]2...Scanning line compression section, 1
3...Multiple image synthesis section, 14...Internal same signal generation section, ]5...Character generation section, 16...Composition section, 1
7... Scroll control section, 18... D/A conversion section,
21... Television screen display section, 22... Multiple composition screen section, 23... Text information screen section, 22a, 2
2b to 22ρ... TV broadcast and CATV broadcast reception screen.

Claims (1)

[Claims] a synthesis processing means for synthesizing TV signals of the plurality of display images in order to independently display the display images of the plurality of TV broadcasts on one display screen of a receiving terminal; and a display image related to each of the plurality of display images. an information generation means that generates information while scrolling the information; and an output composition of the image signal of the display image information and the composition processing means in order to collectively display the display image information on an information display section within the one display screen; A multiple image synthesizing device comprising a synthesis control means for controlling the synthesis of image signals and image signals into a single screen signal to be simultaneously displayed on the display screen and sending the signal to a line connected to the receiving terminal.