Multi-picture television receiver

Claim 2

A multi-picture television receiver wherein a main picture by a first video signal and a sub-picture by a second video signal can be displayed simultaneously on the left and right, comprising: a main picture video processing means (10, 62, 63, 64) whereby said first video signal can be input, can be compressed in an horizontal direction and can be output; a sub-picture video processing means (1, 2, 29, 3, 4, 5, 6) including a first means (4) compressing said second video signal in a horizontal direction and a second means (29) whereby the video part in at least one of an upper part and lower part of said second video signal can be blanked, can have the number of scanning lines reduced and can be output; a first discriminating means (26) discriminating the system of said first video signal; a second discriminating means (25) discriminating the system of said second video signal; a controlling means (9B) controlling said sub-picture video processing means (1, 2, 29, 3, 4, 5, 6) on the basis of the discriminating results of said first and second discriminating means (26, 25) so that, in case 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, in case 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 a superimposing means (12) whereby the output signal of said main picture video processing means (10, 62, 63, 64) and the output signal of said sub-picture video processing means (1, 2, 29, 3, 4, 5, 6) are input and the respective output signals are selected, switched and fed to a displaying means (14).

Claim 3

A multi-picture television receiver wherein a main picture by a first video signal and a sub-picture by a second video signal can be displayed simultaneously on the left and right, comprising: a main picture video processing means (10, 62, 63, 64) whereby said first video signal can be input, can be compressed in a horizontal direction and can be output; a sub-picture video processing means (1, 2, 3, 4, 5, 6) whereby said second video signal can be converted to a digital signal, the digital signal can be written into a provided memory (4) and the signal written into said memory (4) can be read out, can be converted to an analogue signal and can be output; a first discriminating means (26) discriminating the system of said first video signal; a second discriminating means (25) discriminating the system of said second video signal; a controlling means (9C) controlling said sub-picture video processing means (1, 2, 3, 4, 5, 6) on the basis of the discriminating results of said first and second discriminating means (26, 25) so that, in case 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 (4) 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 video and, in case 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 (4) will be controlled to be read out; and a superimposing (12) means whereby the output signal of said main picture video processing means (10, 62, 63, 64) and the output signal of said sub-picture video processing means (1, 2, 3, 4, 5, 6) are input and the respective output signals are selected, switched and fed to a displaying means (14).

Claim 4

A multi-picture television receiver wherein a main picture by a first video signal and a sub-picture by a second video signal can be displayed simultaneously on the left and right, comprising: a main picture video processing means (10, 62, 63, 64) whereby said first video signal can be input, can be compressed in a horizontal direction and can be output; a sub-picture video processing means (1, 2, 3, 4, 5, 32, 6) including a first means (4) compressing said second video signal in a horizontal direction and a second means (32) whereby said second video signal can have another video signal added to increase the number of scanning lines and can be output; a first discriminating means (26) discriminating the system of said first video signal; a second discriminating means (25) discriminating the system of said second video signal; a controlling means (9D) controlling said sub-picture video processing means (1, 2, 3, 4, 5, 32, 6) on the basis of the discriminating results of said first and second discriminating means (26, 25) so that, in case 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, in case 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 a superimposing means (12) whereby the output signal of said main picture video processing means (10, 62, 63, 64) and the output signal of said sub-picture video processing means (1, 2, 3, 4, 5, 32, 6) are input and the respective output signals are selected, switched and fed to a displaying means (14).

Claim 5

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 6

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 7

A multi-picture television receiver wherein a main picture by a first video signal and a sub-picture by a second video signal can be displayed simultaneously on the left and right, comprising: a main picture video processing means (10, 62, 63, 64) whereby said first video signal can be input, can be compressed in a horizontal direction and can be output; a sub-picture video processing means (1, 2, 3, 4, 5, 12A, 6) including a first means (4) compressing said second video signal in a horizontal direction and a second means (12A) whereby said second video signal can have another video information added to increase the number of scanning lines and can be output; a means (34) generating text information; a first discriminating means (26) discriminating the system of said first video signal; a second discriminating means (25) discriminating the system of said second video signal; a controlling means (9E) controlling said sub-picture video processing means (1, 2, 3, 4, 5, 12A, 6) on the basis of the discriminating results of said first and second discriminating means (26, 25) so that, in case 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, in case 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 a superimposing means (12A) whereby the output signal of said main picture video processing means (10, 62, 63, 64) and the output signal of said sub-picture video processing means (1, 2, 3, 4, 5, 12A, 6) are input and the respective output signals are selected, switched and fed to a displaying means (14).

Claim 8

A multi-picture television receiver according to claim 7 wherein said means (34) generating text information is a decoder (34A) decoding a character broadcast signal or character screen broadcast signal superimposed on said first or second video signal.