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US5875000A Expired / Lapsed US ⏱️ 0.0 years remaining

Multi-picture television receiver

Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1995-12-07
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Granted: 1999-02-23
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Expires: 2015-12-07
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Abstract

Abstract A multi-picture television receiver simultaneously displays side-by-side pictures by first and second video signals of first and second video systems, respectively. The video systems can be PAL, SECAM or NTSC. Discriminating circuitry discriminates the system of the first and second video signals. Controlling circuitry controls a sub-picture video processing circuitry based on the results of the discriminating circuitry, so that, when the number of scanning lines of tie second video signal differs from the number of scanning lines of the first video signal, the main and/or the sub-picture are controlled.

Inventors

  • 👤 Koichi Yamaguchi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 22:31
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/01; H04N7/0117; H04N7/0122; H04N5/00; H04N5/44; H04N5/445; H04N5/45; H04N5/46

Claims Analysis

Total Claims: 27
Claim 1
Independent Claim 286 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing means whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing means including a first means compressing said second video signal in a horizontal direction and a second means whereby said second video signal can have the number of scanning lines reduced and can be compressed in a vertical direction; (C) first discriminating means discriminating the first video system of said first video signal; (D) second discriminating means discriminating the second video system of said second video signal; (E) controlling means controlling said sub-picture video processing means on the basis of the discriminating results of said first and said second discriminating means so that, when the number of scanning lines of said second video signal is larger than the number of scanning lines of said first video signal, said second video signal will be compressed in a vertical direction and, when the number of scanning lines of said second video signal and the number of scanning lines of said first video signal are equal to each other, said second video signal will not be compressed in the vertical direction and will be output; and (F) superimposing means whereby the output signal of said main picture video processing means and the output signal of said sub-picture video processing means are input and the respective output signals are selected, switched and fed to a displaying means.
Claim 2
Dependent Claim 286 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing means whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing means including a first means compressing said second video signal in a horizontal direction and a second means whereby said second video signal can have the number of scanning lines reduced and can be compressed in a vertical direction; (C) first discriminating means discriminating the first video system of said first video signal; (D) second discriminating means discriminating the second video system of said second video signal; (E) controlling means controlling said sub-picture video processing means on the basis of the discriminating results of said first and said second discriminating means so that, when the number of scanning lines of said second video signal is larger than the number of scanning lines of said first video signal, said second video signal will be compressed in a vertical direction and, when the number of scanning lines of said second video signal and the number of scanning lines of said first video signal are equal to each other, said second video signal will not be compressed in the vertical direction and will be output; and (F) superimposing means whereby the output signal of said main picture video processing means and the output signal of said sub-picture video processing means are input and the respective output signals are selected, switched and fed to a displaying means.
Claim 3
Dependent Claim 302 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing means whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing means including a first means compressing said second video signal in a horizontal direction and a second means whereby the video part in at least one of an upper part and lower part of said second video signal can be blanked, have the number of scanning lines reduced and be output; (C) first discriminating means discriminating the system of said first video signal; (D) second discriminating means discriminating the system of said second video signal; (E) controlling means controlling said sub-picture video processing means on the basis of the discriminating results of said first and second discriminating means so that, when the number of scanning lines of said second video signal is larger than the number of scanning lines of said first video signal, said second video signal will be blanked, will have the scanning lines reduced and will be output and, when the number of scanning lines of said second video signal and the number of scanning lines of said first video signal are equal to each other, said second video signal will not be blanked, will not have the scanning lines reduced and will be output; and (F) superimposing means whereby the output signal of said main picture video processing means and the output signal of said sub-picture video processing means are input and the respective output signals are selected, switched and fed to a displaying means.
Claim 4
Dependent Claim 302 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing means whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing means including a first means compressing said second video signal in a horizontal direction and a second means whereby the video part in at least one of an upper part and lower part of said second video signal can be blanked, have the number of scanning lines reduced and be output; (C) first discriminating means discriminating the system of said first video signal; (D) second discriminating means discriminating the system of said second video signal; (E) controlling means controlling said sub-picture video processing means on the basis of the discriminating results of said first and second discriminating means so that, when the number of scanning lines of said second video signal is larger than the number of scanning lines of said first video signal, said second video signal will be blanked, will have the scanning lines reduced and will be output and, when the number of scanning lines of said second video signal and the number of scanning lines of said first video signal are equal to each other, said second video signal will not be blanked, will not have the scanning lines reduced and will be output; and (F) superimposing means whereby the output signal of said main picture video processing means and the output signal of said sub-picture video processing means are input and the respective output signals are selected, switched and fed to a displaying means.
Claim 5
Dependent Claim 334 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing means whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing means whereby said second video signal can be converted to a digital signal, the digital signal can be written into a provided memory and the signal written into said memory can be read out, converted to an analog signal and be output; (C) first discriminating means discriminating the system of said first video signal; (D) second discriminating means discriminating the system of said second video signal; (E) controlling means controlling said sub-picture video processing means on the basis of the discriminating results of said first and second discriminating means so that, when the number of scanning lines of said second video signal is larger than the number of scanning lines of said first video signal, other than the video signal part corresponding to at least one of the upper part and lower part of the picture of the second video signal written into said memory will be read out and the number of scanning lines of the sub-picture will be controlled to be equal to the number of scanning lines of the main picture and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, all the video signal parts of the second video signal written into said memory will be controlled to be read out; and (F) superimposing means whereby the output signal of said main picture video processing means and the output signal of said sub-picture video processing means are input and the respective output signals are selected, switched and fed to a displaying means.
Claim 6
Dependent Claim 334 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing means whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing means whereby said second video signal can be converted to a digital signal, the digital signal can be written into a provided memory and the signal written into said memory can be read out, converted to an analog signal and be output; (C) first discriminating means discriminating the system of said first video signal; (D) second discriminating means discriminating the system of said second video signal; (E) controlling means controlling said sub-picture video processing means on the basis of the discriminating results of said first and second discriminating means so that, when the number of scanning lines of said second video signal is larger than the number of scanning lines of said first video signal, other than the video signal part corresponding to at least one of the upper part and lower part of the picture of the second video signal written into said memory will be read out and the number of scanning lines of the sub-picture will be controlled to be equal to the number of scanning lines of the main picture and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, all the video signal parts of the second video signal written into said memory will be controlled to be read out; and (F) superimposing means whereby the output signal of said main picture video processing means and the output signal of said sub-picture video processing means are input and the respective output signals are selected, switched and fed to a displaying means.
Claim 7
Dependent Claim 289 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing means whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing means including a first means compressing said second video signal in a horizontal direction and a second means whereby said second video signal can have another video signal added to increase the number of scanning lines and can be output; (C) first discriminating means discriminating the system of said first video signal; (D) second discriminating means discriminating the system of said second video signal; (E) controlling means controlling said sub-picture video processing means on the basis of the discriminating results of said first and second discriminating means so that, when the number of scanning lines of said second video signal is smaller than the number of scanning lines of said first video signal, said second video signal will have another video information added to increase the number of scanning lines and will be output and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, said second video signal will not have said another video information added and will be output; and (F) superimposing means whereby the output signal of said main picture video processing means and the output signal of said sub-picture video processing means are input and the respective output signals are selected, switched and fed to a displaying means.
Claim 8
Dependent Claim 289 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing means whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing means including a first means compressing said second video signal in a horizontal direction and a second means whereby said second video signal can have another video signal added to increase the number of scanning lines and can be output; (C) first discriminating means discriminating the system of said first video signal; (D) second discriminating means discriminating the system of said second video signal; (E) controlling means controlling said sub-picture video processing means on the basis of the discriminating results of said first and second discriminating means so that, when the number of scanning lines of said second video signal is smaller than the number of scanning lines of said first video signal, said second video signal will have another video information added to increase the number of scanning lines and will be output and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, said second video signal will not have said another video information added and will be output; and (F) superimposing means whereby the output signal of said main picture video processing means and the output signal of said sub-picture video processing means are input and the respective output signals are selected, switched and fed to a displaying means.
Claim 9
Dependent Claim 24 words
A multi-picture television receiver according to claim 4 wherein said added another video information is a DC component to give a specific brightness video.
Claim 10
Dependent Claim 34 words
A multi-picture television receiver according to claim 4 wherein said added another video information is a DC component including a color signal and luminance signal to give a color video by a specific brightness.
Claim 11
Dependent Claim 293 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing means whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing means including a first means compressing said second video signal in a horizontal direction and a second means whereby said second video signal can have another video information added to increase the number of scanning lines and can be output; (C) means generating text information; (D) first discriminating means discriminating the system of said first video signal; (E) second discriminating means discriminating the system of said second video signal; (F) controlling means controlling said sub-picture video processing means on the basis of the discriminating results of said first and second discriminating means so that, when the number of scanning lines of said second video signal is smaller than the number of scanning lines of said first video signal, said second video signal will have said text information added to increase the number of scanning lines and will be output and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, said second video signal will not have said text information added and will be output; and (G) superimposing means whereby the output signal of said main picture video processing means and the output signal of said sub-picture video processing means are input and the respective output signals are selected, switched and fed to a displaying means.
Claim 12
Dependent Claim 293 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing means whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing means including a first means compressing said second video signal in a horizontal direction and a second means whereby said second video signal can have another video information added to increase the number of scanning lines and can be output; (C) means generating text information; (D) first discriminating means discriminating the system of said first video signal; (E) second discriminating means discriminating the system of said second video signal; (F) controlling means controlling said sub-picture video processing means on the basis of the discriminating results of said first and second discriminating means so that, when the number of scanning lines of said second video signal is smaller than the number of scanning lines of said first video signal, said second video signal will have said text information added to increase the number of scanning lines and will be output and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, said second video signal will not have said text information added and will be output; and (G) superimposing means whereby the output signal of said main picture video processing means and the output signal of said sub-picture video processing means are input and the respective output signals are selected, switched and fed to a displaying means.
Claim 13
Dependent Claim 35 words
A multi-picture television receiver according to claim 7 wherein said means generating text information is a decoder decoding a character broadcast signal or character screen broadcast signal superimposed on said first or second video signal.
Claim 14
Dependent Claim 301 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing circuitry constructed and adapted whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing circuitry including first circuitry constructed and adapted to compress said second video signal in a horizontal direction and a second circuitry constructed and adapted whereby said second video signal can have the number of scanning lines reduced and can be compressed in a vertical direction; (C) first discriminating circuitry constructed and adapted to discriminate said first video signal system; (D) second discriminating circuitry constructed and adapted to discriminate said second video signal system; (E) controlling circuitry constructed and adapted to control said sub-picture video processing circuitry on the basis of the discriminating results of said first and second discriminating circuitry so that, when the number of scanning lines of said second video signal is larger than he number of scanning lines of said first video signal, said second video signal will be compressed in a vertical direction and, when the number of scanning lines of said second video signal and the number of scanning lines of said first video signal are equal to each other, said second video signal will not be compressed in the vertical direction and will be output; and (F) superimposing circuitry constructed and adapted whereby the output signal of said main picture video processing circuitry and the output signal of said sub-picture video processing circuitry are input and the respective output signals are selected, switched and fed to a display circuitry.
Claim 15
Dependent Claim 301 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing circuitry constructed and adapted whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing circuitry including first circuitry constructed and adapted to compress said second video signal in a horizontal direction and a second circuitry constructed and adapted whereby said second video signal can have the number of scanning lines reduced and can be compressed in a vertical direction; (C) first discriminating circuitry constructed and adapted to discriminate said first video signal system; (D) second discriminating circuitry constructed and adapted to discriminate said second video signal system; (E) controlling circuitry constructed and adapted to control said sub-picture video processing circuitry on the basis of the discriminating results of said first and second discriminating circuitry so that, when the number of scanning lines of said second video signal is larger than he number of scanning lines of said first video signal, said second video signal will be compressed in a vertical direction and, when the number of scanning lines of said second video signal and the number of scanning lines of said first video signal are equal to each other, said second video signal will not be compressed in the vertical direction and will be output; and (F) superimposing circuitry constructed and adapted whereby the output signal of said main picture video processing circuitry and the output signal of said sub-picture video processing circuitry are input and the respective output signals are selected, switched and fed to a display circuitry.
Claim 16
Dependent Claim 325 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing circuitry constructed and adapted whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing circuitry including a first circuitry constructed and adapted to compress said second video signal in a horizontal direction and second circuitry constructed and adapted whereby the video part in at least one of an upper part and lower part of said second video signal can be blanked, have the number of scanning lines reduced and be output; (C) first discriminating circuitry constructed and adapted to discriminate the system of said first video signal; (D) second discriminating circuitry constructed and adapted to discriminate the system of said second video signal; (E) controlling circuitry constructed and adapted to control said sub-picture video processing circuitry on the basis of the discriminating results of said first and second discriminating circuitry so that, when the number of scanning lines of said second video signal is larger than the number of scanning lines of said first video signal, said second video signal will be blanked, will have the scanning lines reduced and will be output and, when the number of scanning lines of said second video signal and the number of scanning lines of said first video signal are equal to each other, said second video signal will not be blanked, will not have the scanning lines reduced and will be output; and (F) superimposing circuitry constructed and adapted whereby the output signal of said main picture video processing circuitry and the output signal of said sub-picture video processing circuitry are input and the respective output signals are selected, switched and fed to displaying circuitry.
Claim 17
Dependent Claim 325 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing circuitry constructed and adapted whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing circuitry including a first circuitry constructed and adapted to compress said second video signal in a horizontal direction and second circuitry constructed and adapted whereby the video part in at least one of an upper part and lower part of said second video signal can be blanked, have the number of scanning lines reduced and be output; (C) first discriminating circuitry constructed and adapted to discriminate the system of said first video signal; (D) second discriminating circuitry constructed and adapted to discriminate the system of said second video signal; (E) controlling circuitry constructed and adapted to control said sub-picture video processing circuitry on the basis of the discriminating results of said first and second discriminating circuitry so that, when the number of scanning lines of said second video signal is larger than the number of scanning lines of said first video signal, said second video signal will be blanked, will have the scanning lines reduced and will be output and, when the number of scanning lines of said second video signal and the number of scanning lines of said first video signal are equal to each other, said second video signal will not be blanked, will not have the scanning lines reduced and will be output; and (F) superimposing circuitry constructed and adapted whereby the output signal of said main picture video processing circuitry and the output signal of said sub-picture video processing circuitry are input and the respective output signals are selected, switched and fed to displaying circuitry.
Claim 18
Dependent Claim 358 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing circuitry constructed and adapted whereby said first video signal can be input, be compressed in a horizontal direction and be output; (B) sub-picture video processing circuitry constructed and adapted whereby said second video signal can be converted to a digital signal, the digital signal can be written into a provided memory and the signal written into said memory can be read out, can be converted to an analog signal and can be output; (C) first discriminating circuitry constructed and adapted to discriminate the system of said first video signal; (D) second discriminate circuitry constructed and adapted to discriminate the system of said second video signal; (E) controlling circuitry constructed and adapted to control said sub-picture video processing circuitry on the basis of the discriminating results of said first and second discriminating circuitry so that, when the number of scanning lines of said second video signal is larger than the number of scanning lines of said first video signal, others than the video signal part corresponding to at least one of the upper part and lower part of the picture of the second video signal written into said memory will be read out and the number of scanning lines of the sub-picture will be controlled to be equal to the number of scanning lines of the main picture and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, all the video signal parts of the second video signal written into said memory will be controlled to be read out; and (F) superimposing circuitry constructed and adapted whereby the output signal of said main picture video processing circuitry and the output signal of said sub-picture video processing circuitry are input and the respective output signals are selected, switched and fed to displaying circuitry.
Claim 19
Dependent Claim 358 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing circuitry constructed and adapted whereby said first video signal can be input, be compressed in a horizontal direction and be output; (B) sub-picture video processing circuitry constructed and adapted whereby said second video signal can be converted to a digital signal, the digital signal can be written into a provided memory and the signal written into said memory can be read out, can be converted to an analog signal and can be output; (C) first discriminating circuitry constructed and adapted to discriminate the system of said first video signal; (D) second discriminate circuitry constructed and adapted to discriminate the system of said second video signal; (E) controlling circuitry constructed and adapted to control said sub-picture video processing circuitry on the basis of the discriminating results of said first and second discriminating circuitry so that, when the number of scanning lines of said second video signal is larger than the number of scanning lines of said first video signal, others than the video signal part corresponding to at least one of the upper part and lower part of the picture of the second video signal written into said memory will be read out and the number of scanning lines of the sub-picture will be controlled to be equal to the number of scanning lines of the main picture and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, all the video signal parts of the second video signal written into said memory will be controlled to be read out; and (F) superimposing circuitry constructed and adapted whereby the output signal of said main picture video processing circuitry and the output signal of said sub-picture video processing circuitry are input and the respective output signals are selected, switched and fed to displaying circuitry.
Claim 20
Dependent Claim 313 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing circuitry constructed and adapted whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing circuitry including a first circuitry constructed and adapted to compress said second video signal in a horizontal direction and a second circuitry constructed and adapted whereby said second video signal can have another video signal added to increase the number of scanning lines and can be output; (C) first discriminating circuitry constructed and adapted to discriminate the system of said first video signal; (D) second discriminating circuitry constructed and adapted to discriminate the system of said second video signal; (E) controlling circuitry constructed and adapted to control said sub-picture video processing circuitry on the basis of the discriminating results of said first and second discriminating circuitry so that, when the number of scanning lines of said second video signal is smaller than the number of scanning lines of said first video signal, said second video signal will have another video information added to increase the number of scanning lines and will be output and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, said second video signal will not have said another video information added and will be output; and (F) superimposing circuitry constructed and adapted whereby the output signal of said main picture video processing circuitry and the output signal of said sub-picture video processing circuitry are input and the respective output signals are selected, switched and fed to displaying circuitry.
Claim 21
Dependent Claim 313 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing circuitry constructed and adapted whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing circuitry including a first circuitry constructed and adapted to compress said second video signal in a horizontal direction and a second circuitry constructed and adapted whereby said second video signal can have another video signal added to increase the number of scanning lines and can be output; (C) first discriminating circuitry constructed and adapted to discriminate the system of said first video signal; (D) second discriminating circuitry constructed and adapted to discriminate the system of said second video signal; (E) controlling circuitry constructed and adapted to control said sub-picture video processing circuitry on the basis of the discriminating results of said first and second discriminating circuitry so that, when the number of scanning lines of said second video signal is smaller than the number of scanning lines of said first video signal, said second video signal will have another video information added to increase the number of scanning lines and will be output and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, said second video signal will not have said another video information added and will be output; and (F) superimposing circuitry constructed and adapted whereby the output signal of said main picture video processing circuitry and the output signal of said sub-picture video processing circuitry are input and the respective output signals are selected, switched and fed to displaying circuitry.
Claim 22
Dependent Claim 24 words
A multi-picture television receiver according to claim 12 wherein said added another video information is a DC component to give a specific brightness video.
Claim 23
Dependent Claim 34 words
A multi-picture television receiver according to claim 12 wherein said added another video information is a DC component including a color signal and luminance signal to give a color video by a specific brightness.
Claim 24
Dependent Claim 321 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing circuitry constructed and adapted whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing circuitry including a first circuitry constructed and adapted to compress said second video signal in a horizontal direction and a second circuitry constructed and adapted whereby said second video signal can have another video information added to increase the number of scanning lines and can be output; (C) circuitry constructed and adapted to generate text information; (D) first discriminating circuitry constructed and adapted to discriminate the system of said first video signal; (E) second discriminating circuitry constructed and adapted to discriminate the system of said second video signal; (F) controlling circuitry constructed and adapted to control said sub-picture video processing circuitry on the basis of the discriminating results of said first and second discriminating circuitry so that, when the number of scanning lines of said second video signal is smaller than the number of scanning lines of said first video signal, said second video signal will have said text information added to increase the number of scanning lines and will be output and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, said second video signal will not have said text information added and will be output; and (G) superimposing circuitry constructed and adapted whereby the output signal of said main picture video processing circuitry and the output signal of said sub-picture video processing circuitry are input and the respective output signals are selected, switched and fed to displaying circuitry.
Claim 25
Dependent Claim 321 words
A multi-picture television receiver wherein a main picture by a first video signal of a first video system and a sub-picture by a second video signal of a second video system can be displayed simultaneously on the left and right sides of a display, the receiver comprising: (A) main picture video processing circuitry constructed and adapted whereby said first video signal can be input, compressed in a horizontal direction and be output; (B) sub-picture video processing circuitry including a first circuitry constructed and adapted to compress said second video signal in a horizontal direction and a second circuitry constructed and adapted whereby said second video signal can have another video information added to increase the number of scanning lines and can be output; (C) circuitry constructed and adapted to generate text information; (D) first discriminating circuitry constructed and adapted to discriminate the system of said first video signal; (E) second discriminating circuitry constructed and adapted to discriminate the system of said second video signal; (F) controlling circuitry constructed and adapted to control said sub-picture video processing circuitry on the basis of the discriminating results of said first and second discriminating circuitry so that, when the number of scanning lines of said second video signal is smaller than the number of scanning lines of said first video signal, said second video signal will have said text information added to increase the number of scanning lines and will be output and, when the number of scanning lines of said second video signal is equal to the number of scanning lines of said first video signal, said second video signal will not have said text information added and will be output; and (G) superimposing circuitry constructed and adapted whereby the output signal of said main picture video processing circuitry and the output signal of said sub-picture video processing circuitry are input and the respective output signals are selected, switched and fed to displaying circuitry.
Claim 26
Dependent Claim 36 words
A multi-picture television receiver according to claim 15 wherein said circuitry generating text information is a decoder decoding a character broadcast signal or character screen broadcast signal superimposed on said first or said second video signal.
Claim 27
Dependent Claim 40 words
A receiver as in any one of claims 1-16 wherein said first video system is selected from the group comprising PAL, SECAM and NTSC, and wherein said second video system is selected from the group comprising PAL, SECAM and NTSC.

References Cited (Backward Citations)

US5500683A Cited
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