Method and device for changing a simultaneous television signal to a line sequential signal and vice versa

Claim 3

A system as claimed in claim 1 wherein said adding means comprises means for adding said line-synchronizing pulses to only one of said partial signals.

Claim 4

A system as claimed in claim 2 wherein n 2 and said partial signals comprise luminance and brightness signals respectively, and said adding means adds said line-synchronizing pulses to said luminance signal.

Claim 5

A system as claimed in claim 1 further comprising means coupled between said adding and switch means for delaying the partial signals containing said line-synchronizing signals by a time substantially equal To one-hundredth of a line period.

Claim 6

A system as claimed in claim 1 wherein said second recited applying means starts said ring counter approximately 20 line periods after the beginning of said field-synchronizing pulse.

Claim 7

A system as claimed in claim 1 wherein said second recited applying means sets said ring counter to close said switch to transmit a selected partial component upon the occurrence of said field-syncrhonizing pulses.

Claim 10

A system as claimed in claim 7 further comprising means for generating a complete synchronization signal from the synchronization signals within said delayed partial signals and means for generating an additional control signal for said ring counter from the synchronization signal in at least one delayed partial signal.

Claim 11

A system as claimed in claim 8 wherein said separating means provides said synchronization signals from all of said delayed partial signals and said addition control signal generating means generates said additional control signal from only one delayed partial signals.

Claim 12

A system as claimed in claim 7 further comprising additional delay means each coupled to said (n-1) delay means and having a time delay substantially equal to one-hundredth of a line period.

Claim 13

A system as claimed in claim 7 wherein said second recited applying means starts said ring counter approximately 20 line periods after the beginning of said field-synchronizing pulse.

Claim 14

A system as claimed in claim 7 further comprising means for setting said counter to transmit a selected partial signal upon the occurrence of a synchronization pulse within a selected partial signal.

Claim 15

A system as claimed in claim 7 further comprising blocking means coupled to receive said field-synchronizing signals for fixing the position of said switch upon the occurrence of said synchronizing signals.

Claim 16

A television signal transmission system comprising a signal converter and a signal reconverter adapted to receive the output of said converter, said signal converter comprising a source of n simultaneous partial television signals, an output circuit, first switch means connected to sequentially apply said partial signals to said output circuit, a source of line and field-synchronizing pulses, first ring-counter means connected to control said first switch means, means applying said line pulses to said first counter means whereby said first switch means is stepped in synchronism with said line pulses, means applying said field pulses to said first counter means whereby said first switch means is reset to a predetermined position in response to said field pulses, and means adding said line pulses to at least one but less than n of said partial signals; said reconverting means comprising an input ciRcuit, (n-1) delay means connected to said input circuit, second switch means connected to sequentially scan said input circuit and the outputs of said delay means whereby said simultaneous signals are reproduced in the output of said second switch means, second ring-counter means connected to said second switch means, means for deriving line and field pulses from the inputs of said second switch means, means applying said derived line pulses to said second counter means whereby said second switch means is stepped in synchronism with said derived line pulses, and means applying said derived field pulses to said second counter means for resetting said second counter means to a predetermined position in response to said derived field pulses.

Claim 17

A television signal transmission system comprising a signal converter and a signal reconverter adapted to receive the output of said converter, said signal converter comprising a source of n simultaneous partial television signals, an output circuit, first switch means connected to sequentially apply said partial signals to said output circuit, a source of line and field-synchronizing pulses, first ring-counter means connected to control said first switch means, means applying said line pulses to said first counter means whereby said first switch means is stepped in synchronism with said line pulses, means applying said field pulses to said first counter means whereby said first switch means is reset to a predetermined position in response to said field pulses, and means adding said line pulses to at least one but less than n of said partial signals; said reconverting means comprising an input ciRcuit, (n-1) delay means connected to said input circuit, second switch means connected to sequentially scan said input circuit and the outputs of said delay means whereby said simultaneous signals are reproduced in the output of said second switch means, second ring-counter means connected to said second switch means, means for deriving line and field pulses from the inputs of said second switch means, means applying said derived line pulses to said second counter means whereby said second switch means is stepped in synchronism with said derived line pulses, and means applying said derived field pulses to said second counter means for resetting said second counter means to a predetermined position in response to said derived field pulses.

Claim 18

A system as claimed in claim 14 further comprising means for generating a complete synchronization signal from the synchronization signals within said delayed partial signals and means for generating an additional control signal for said second ring counter from the synchronization signal in at least one delayed partial signal.

Claim 19

A system as claimed in claim 15 wherein said deriving means derives said synchronization signals from all of said delayed partial signals and said additional control-signal-generating means generates said additional control signal from only one delayed partial signals.

Claim 20

A system as claimed in claim 14 further comprising additional delay means each coupled to said (n-1) delay means and having a time delay substantially equal to one-hundredth of a line period.

Claim 21

A system as claimed in claim 14 wherein said fourth recited applying means starts said second ring counter approximately 20 line periods after the beginning of said field-synchronizing pulse.

Claim 22

A system as claimed in claim 14 further comprising means for setting said second counter to transmit a selected partial signal upon the occurrence of a synchronization pulse within a selected partial signal.

Claim 23

A system as claimed in claim 14 further comprising blocking means coupled to receive said field-synchronizing signals for fixing the position of said second switch upon the occurrence of said field-synchronizing signals.