Still picture broadcasting receiver

Claim 2

A receiver for receiving a composite still picture broadcasting signal having a multiplexed video signal and pulse code modulated audio signal, a first synchronizing signal synchronized with said pulse code modulated audio signal and a second synchronizing signal including a number of synchronizing signals required for the reproduction of said multiplexed video signal and pulse code modulated audio signal, one of said number of synchronizing signals being a horizontal synchronizIng signal, said video signal and said pulse code modulated audio signal being time division multiplexed in a predetermined sequence, wherein said first and said second synchronizing signals are inserted in predetermined positions in said video signal and in said pulse code modulated audio signal, said first and second synchronizing signals not being amplitude separable from said multiplexed video signal and pulse code modulated audio signal, said horizontal synchronizing signal being inserted in a predetermined position with respect to the position of said first synchronizing signal, comprising: first means for deriving and reproducing said first synchronizing signal synchronized with said pulse code modulated audio signal from said still picture broadcasting signal; second means for deriving and reproducing said horizontal synchronizing signal included in said second synchronizing signal and required for the reproduction of said video signal, said second means including means for using said reproduced first synchronizing signal as a reference signal and means for detecting said horizontal synchronizing signal included in said composite still picture broadcasting signal; third means for deriving said video signal from said composite still picture broadcasting signal; means for adding said reproduced horizontal synchronizing signal to said derived video signal, said reproduced horizontal synchronizing signal having a larger amplitude than that of said derived video signal, whereby said added horizontal synchronizing signal may be amplitude separated from said derived video signal; and means for recording and for repeatedly reproducing said derived video signal added with said reproduced horizontal synchronizing signal.

Claim 3

A receiver for receiving a composite still picture broadcasting signal having a multiplexed video signal and pulse code modulated audio signal, a first synchronizing signal synchronized with said pulse code modulated audio signal and a second synchronizing signal including a number of synchronizing signals required for the reproduction of said multiplexed video signal and pulse code modulated audio signal, one of said number of synchronizing signals being a horizontal synchronizing signal, another of said number of synchronizing signals being a frame synchronizing signal, said multiplexed video signal and pulse code modulated audio signal being time division multiplexed in a predetermined sequence, wherein said first and said second synchronizing signals are inserted in predetermined positions in said video signal and in said pulse code modulated audio signal, said first and second synchronizing signals not being amplitude separable from said multiplexed video signal and pulse code modulated audio signal, said horizontal and frame synchronizing signals being inserted in predetermined positions with respect to the position of said first synchronizing signal, comprising; first means for deriving and reproducing said first synchronizing signal synchronized with said pulse code modulated audio signal from said still picture broadcasting signal; second means for deriving and reproducing said horizontal synchronizing signal and said frame synchronizing signal included in said second synchronizing signal and required for the reproduction of said video signal, said second means including means for detecting said horizontal synchronizing signal and said frame synchronizing signal included in said still picture broadcasting signal and means for using said reproduced first synchronizing signal as a reference signal; means for obtaining a vertical synchronizing signal, said means for obtaining including a step down circuit, responsive to said reproduced horizontal synchronizing signal, for stepping down the frequency of said horizontal synchronizing signal, said step down circuit being responsive to said reproduced frame synchronizing signal for resetting said step down circuit; third means for deriving said video Signal from said still picture broadcasting signal; means for adding said reproduced horizontal synchronizing signal and said vertical synchronizing signal to said derived video signal, said reproduced horizontal synchronizing signal and said vertical synchronizing signal having larger amplitudes than that of said derived video signal, whereby said added horizontal synchronizing signal and vertical synchronizing signal may be amplitude separated from said derived video signal; and means for recording and for repeatedly reproducing said derived video signal, said reproduced horizontal synchronizing signal and said vertical synchronizing signal.

Claim 4

A receiver for receiving a composite still picture broadcasting signal having a multiplexed video signal and pulse code modulated audio signal, a first synchronizing signal synchronized with said pulse code modulated audio signal and a second synchronizing signal including a number of synchronizing signals required for the reproduction of said multiplexed video signal and pulse code modulated audio signal, one of said number of synchronizing signals being a horizontal synchronizing signal, another of said number of synchronizing signals being a frame synchronizing signal, said multiplexed video signal and pulse code modulated audio signal being time division multiplexed in a predetermined sequence, wherein said first and said second synchronizing signals are inserted in predetermined positions in said video signal and in said pulse code modulated audio signal, said first and second synchronizing signals not being amplitude separable from said multiplexed video signal and pulse code modulated audio signal, said horizontal and frame synchronizing signals being inserted in predetermined positions with respect to the position of said first synchronizing signal, comprising; first means for deriving and reproducing said first synchronizing signal synchronized with said pulse code modulated audio signal from said still picture broadcasting signal; second means for deriving and reproducing said horizontal synchronizing signal and said frame synchronizing signal included in said second synchronizing signal and required for the reproduction of said video signal, said second means including means for detecting said horizontal synchronizing signal and said frame synchronizing signal included in said still picture broadcasting signal and means for using said reproduced first synchronizing signal as a reference signal; means for obtaining a vertical synchronizing signal, said means for obtaining including a step down circuit, responsive to said reproduced horizontal synchronizing signal, for stepping down the frequency of said horizontal synchronizing signal, said step down circuit being responsive to said reproduced frame synchronizing signal for resetting said step down circuit; third means for deriving said video Signal from said still picture broadcasting signal; means for adding said reproduced horizontal synchronizing signal and said vertical synchronizing signal to said derived video signal, said reproduced horizontal synchronizing signal and said vertical synchronizing signal having larger amplitudes than that of said derived video signal, whereby said added horizontal synchronizing signal and vertical synchronizing signal may be amplitude separated from said derived video signal; and means for recording and for repeatedly reproducing said derived video signal, said reproduced horizontal synchronizing signal and said vertical synchronizing signal.

Claim 5

A receiver for receiving a composite still picture broadcasting signal having a multiplexed video signal and pulse code modulated audio signal, a first synchronizing signal synchronized with said pulse code modulated audio signal and a second synchronizing signal including a number of synchronizing signals required for the reproduction of said multiplexed video signal and pulse code modulated audio signal, one of said number of synchronizing signals being a horizontal synchronizing signal, another of said number of synchronizing signals being a frame synchronizing signal, said multiplexed video signal and pulse code modulated audio multiplex signal being time division multiplexed in a predetermined sequence, wherein said first and said second synchronizing signals are inserted in predetermined positions in said video signal and in said pulse code modulated audio signal, said first and second synchronizing signals not being amplitude separable from said multiplexed video signal and pulse code modulated audio signal, said horizonal and frame synchronizing signals being inserted in predetermined positions with respect to the position of said first synchronizing signal, comprising; first means for deriving and reproducing said first synchronizing signal synchronized with said pulse code modulated audio signal from said still picture broadcasting signal; second means for deriving and reproducing said horizontal synchronizing signal and said frame synchronizing signal included in said second synchronizing signal and required for the reproduction of said video signal, said second means including means for detecting said horizontal synchronizing signal and said frame synchronizing signal included in said still picture broadcasting signal and means for using said reproduced first synchronizing signal as a reference signal; means for obtaining a vertical synchronizing signal, said means for obtaining including a step down circuit, responsive to said reproduced horizonal synchronizing signal, for stepping down the frequency of said reproduced horizontal synchronizing signal, said step down circuit being responsive to said reproduced frame synchronizing signal for resetting said step down circuit; third means for deriving said video signal and said first and second synchronizing signals from said still picture broadcasting signal; means for eliminating said derived first and second synchronizing signals, said means for eliminating including means for generating a signal corresponding to said reproduced horizontal synchronizing signal and means for subtracting said generated signal from said derived first and second synchronizing signals; means for adding said reproduced horizontal synchronizing signal and said vertical synchronizing signal to the eliminated position of said derived first and second synchronizing signals, said reproduced horizontal synchronizing signal and said vertical synchronizing signal having larger amplitudes than that of said derived video signals; and means for recording and for repeatedly reproducing said derived video signal, said reproduced horizontal synchronizing signal and said vertical synchronizing signal.

Claim 6

A receiver for receiving a composite still picture broadcasting signal having a multiplexed video signal and pulse code modulated audio signal, a first synchronizing signal synchronized with said pulse code modulated audio signal and a second synchronizing signal including a number of synchronizing signals required for the reproduction of said multiplexed video signal and pulse code modulated audio signal, one of said number of synchronizing signals being a horizontal synchronizing signal, another of said number of synchronizing signals being a frame synchronizing signal, said multiplexed video signal and pulse code modulated audio multiplex signal being time division multiplexed in a predetermined sequence, wherein said first and said second synchronizing signals are inserted in predetermined positions in said video signal and in said pulse code modulated audio signal, said first and second synchronizing signals not being amplitude separable from said multiplexed video signal and pulse code modulated audio signal, said horizonal and frame synchronizing signals being inserted in predetermined positions with respect to the position of said first synchronizing signal, comprising; first means for deriving and reproducing said first synchronizing signal synchronized with said pulse code modulated audio signal from said still picture broadcasting signal; second means for deriving and reproducing said horizontal synchronizing signal and said frame synchronizing signal included in said second synchronizing signal and required for the reproduction of said video signal, said second means including means for detecting said horizontal synchronizing signal and said frame synchronizing signal included in said still picture broadcasting signal and means for using said reproduced first synchronizing signal as a reference signal; means for obtaining a vertical synchronizing signal, said means for obtaining including a step down circuit, responsive to said reproduced horizonal synchronizing signal, for stepping down the frequency of said reproduced horizontal synchronizing signal, said step down circuit being responsive to said reproduced frame synchronizing signal for resetting said step down circuit; third means for deriving said video signal and said first and second synchronizing signals from said still picture broadcasting signal; means for eliminating said derived first and second synchronizing signals, said means for eliminating including means for generating a signal corresponding to said reproduced horizontal synchronizing signal and means for subtracting said generated signal from said derived first and second synchronizing signals; means for adding said reproduced horizontal synchronizing signal and said vertical synchronizing signal to the eliminated position of said derived first and second synchronizing signals, said reproduced horizontal synchronizing signal and said vertical synchronizing signal having larger amplitudes than that of said derived video signals; and means for recording and for repeatedly reproducing said derived video signal, said reproduced horizontal synchronizing signal and said vertical synchronizing signal.

Claim 7

A receiver as claimed in claim 3 wherein said means for recording and for repeatedly reproducing said derived video signal, said reproduced horizontal synchronizing signal and said vertical synchronizing signal comprises a frame memory having a magnetic disc.

Claim 8

A receiver for receiving a composite still picture broadcasting signal having a multiplexed video signal and pulse code modulated audio signal, a first synchronizing signal synchronized with said pulse code modulated audio signal and a second synchronizing signal including a number of synchronizing signals required for the reproduction of said multiplexed video signal and pulse code modulated audio signal, one of said number of synchronizing signals being a horizontal synchronizing signal, said multiplexed video signal and pulse code modulated audio signal being time division multiplexed in a predetermined sequence, wherein said first and said second synchronizing signals are inserted in predetermined positions in said video signal and in said pulse code modulated audio signal, said first and second synchronizing signals not being amplitude separable from said multiplexed video signal and pulse code modulated audio signal, comprising: first means for deriving the first synchronizing signal synchronized with said pulse code modulated audio signal from said still picture broadcasting signal; a coincidence circuit, responsive to said derived first synchronizing signal, for generating a horizontal synchronizing coincidence pulse, said coincidence pulse being generated at a predetermined time with respect to receipt by said receiver of said second synchronizing signal; a horizontal synchronizing signal generator means, synchronized with said horizontal synchronizing coincidence pulse, for reproducing said horizontal synchronizing signal; second means for deriving said video signal from said still picture broadcasting signal; means for adding said reproduced horizontal synchronizing signal to said derived video signal, said reproduced horizontal synchronizing signal having a larger amplitude than that of said derived video signal; and means for recording and for repeatedly reproducing said derived video signal and said reproduced horizontal synchronizing signal.

Claim 9

A receiver for receiving a composite still picture broadcasting signal having a multiplexed video signal and pulse code modulated audio signal, a first synchronizing signal synchronized with said pulse code modulated audio signal and a second synchronizing signal including a number of synchronizing signals required for the reproduction of said multiplexed video signal and pulse code modulated audio signal, one of said number of synchronizing signals being a horizontal synchronizing signal, said multiplexed video signal and pulse code modulated audio signal being time division multiplexed in a predetermined sequence, wherein said first and said second synchronizing signals are inserted in predetermined positions in said video signal and in said pulse code modulated audio signal, said first and second synchronizing signals not being amplitude separable from said multiplexed video signal and pulse code modulated audio signal, comprising: first means for deriving the first synchronizing signal synchronized with said pulse code modulated audio signal from said still picture broadcasting signal; a coincidence circuit, responsive to said derived first synchronizing signal, for generating a horizontal synchronizing coincidence pulse, said coincidence pulse being generated at a predetermined time with respect to receipt by said receiver of said second synchronizing signal; a horizontal synchronizing signal generator means, synchronized with said horizontal synchronizing coincidence pulse, for reproducing said horizontal synchronizing signal; second means for deriving said video signal from said still picture broadcasting signal; means for adding said reproduced horizontal synchronizing signal to said derived video signal, said reproduced horizontal synchronizing signal having a larger amplitude than that of said derived video signal; and means for recording and for repeatedly reproducing said derived video signal and said reproduced horizontal synchronizing signal.

Claim 10

A receiver for receiving a composite still picture broadcasting signal having a multiplexed video signal and pulse code modulated audio signal, a first synchronizing signal synchronized with said pulse code modulated audio signal and a second synchronizing signal including a number of synchronizing signals required for the reproduction of said multiplexed video signal and pulse code modulated audio signal, one of said number of synchronizing signals being a horizontal synchronizing signal, another of said number of synchronizing signals being a frame synchronizing signal, said multiplexed video signal and pulse code modulated audio signal being time division multiplexed in a predetermined sequence, wherein said first and second synchronizing signals are inserted in predetermined positions in said video signal and in said pulse code modulated audio signal, said first and second synchronizing signals not being amplitude separable from said multiplexed video signal and pulse code modulated audio signal, comprising: first means for deriving the first synchronizing signal synchronized with said pulse code modulated audio signal from said still picture broadcasting signal; a coincidence circuit, responsive to said derived first synchronizing signal, for generating a coincidence pulse at a time when said derived first synchronizing signal is supplied thereto; a plurality of shift registers, said registers receiving said composite still picture broadcasting signal and shifting said composite broadcasting signal at each bit into said registers a first AND gate having a first input terminal connected to an output terminal of one of said shift registers and a second input terminal supplied with said coincidence pulse, said first AND gate generating said horizontal synchronizing signal at an output of said first AND gate; a second AND gate having a firsT input terminal connected to an output terminal of another of said shift registers and a second input terminal supplied with said coincidence signal, said second AND gate generating said frame synchronizing signal at an output of said second AND gate; means for obtaining a vertical synchronizing signal, said means for obtaining including a step down circuit, responsive to said generated horizontal synchronizing signal, for stepping down the frequency of said generated horizontal synchronizing signal, said step down circuit being responsive to said generated frame synchronizing signal for resetting said step down circuit; second means for deriving said video signal from said still picture broadcasting signal; means for adding said generated horizontal synchronizing signal and said vertical synchronizing signal to said derived video signal, said generated horizontal synchronizing signal and said vertical synchronizing signal having larger amplitudes than that of said derived video signal, whereby said added horizontal synchronizing signal and vertical synchronizing signal may be amplitude separated from said derived video signal; and means for recording and for repeatedly reproducing said video signal, said generated horizontal synchronizing signal and said vertical synchronizing signal.

Claim 11

A receiver for receiving a composite still picture broadcasting signal having a multiplexed video signal and pulse code modulated audio signal, a first synchronizing signal synchronized with said pulse code modulated audio signal and a second synchronizing signal including a number of synchronizing signals required for the reproduction of said multiplexed video signal and pulse code modulated audio signal, one of said number of synchronizing signals being a horizontal synchronizing signal, another of said number of synchronizing signals being a frame synchronizing signal, said multiplexed video signal and pulse code modulated audio signal being time division multiplexed in a predetermined sequence, wherein said first and second synchronizing signals are inserted in predetermined positions in said video signal and in said pulse code modulated audio signal, said first and second synchronizing signals not being amplitude separable from said multiplexed video signal and pulse code modulated audio signal, comprising: first means for deriving the first synchronizing signal synchronized with said pulse code modulated audio signal from said still picture broadcasting signal; a coincidence circuit, responsive to said derived first synchronizing signal, for generating a coincidence pulse at a time when said derived first synchronizing signal is supplied thereto; a plurality of shift registers, said registers receiving said composite still picture broadcasting signal and shifting said composite broadcasting signal at each bit into said registers a first AND gate having a first input terminal connected to an output terminal of one of said shift registers and a second input terminal supplied with said coincidence pulse, said first AND gate generating said horizontal synchronizing signal at an output of said first AND gate; a second AND gate having a firsT input terminal connected to an output terminal of another of said shift registers and a second input terminal supplied with said coincidence signal, said second AND gate generating said frame synchronizing signal at an output of said second AND gate; means for obtaining a vertical synchronizing signal, said means for obtaining including a step down circuit, responsive to said generated horizontal synchronizing signal, for stepping down the frequency of said generated horizontal synchronizing signal, said step down circuit being responsive to said generated frame synchronizing signal for resetting said step down circuit; second means for deriving said video signal from said still picture broadcasting signal; means for adding said generated horizontal synchronizing signal and said vertical synchronizing signal to said derived video signal, said generated horizontal synchronizing signal and said vertical synchronizing signal having larger amplitudes than that of said derived video signal, whereby said added horizontal synchronizing signal and vertical synchronizing signal may be amplitude separated from said derived video signal; and means for recording and for repeatedly reproducing said video signal, said generated horizontal synchronizing signal and said vertical synchronizing signal.

Claim 12

A receiver for receiving a composite still picture broadcasting signal having a multiplexed video signal and pulse code modulated audio signal, a first synchronizing signal synchronized with said pulse code modulated audio signal and a second synchronizing signal including a number of synchronizing signals required for the reproduction of said multiplexed video signal and pulse code modulated audio signal, one of said number of synchronizing signals being a horizontal synchronizing signal, another of said number of synchronizing signals being a frame synchronizing signal, said multiplexed video signal and pulse code modulated audio signal being time division multiplexed in a predetermined sequence, wherein said first and second synchronizing signals are inserted in predetermined positions in said video signal and in said pulse code modulated audio signal, said first and second syynchronizing signals not being amplitude separable from said multiplexed video signal and pulse code modulated audio signal, comprising: first means for deriving the first synchronizing signal synchronized with said pulse code modulated audio signal from said still picture broadcasting signal; a coincidence circuit, responsive to said derived first synchronizing signal, for generating a coincidence pulse at a time when said derived first synchronizing signal is supplied thereto; a plurality of shift registers, said registers receiving said composite still picture broadcasting signal and shifting said composite broadcasting signal at each bit into said registers a first AND gate having a first input terminal connected to an output terminal of one of said shift registers and a second input terminal supplied with said coincidence pulse, said first AND gate generating said horizontal synchronizing signal at an output of said first AND gate; a second AND gate having a first input terminal connected to an output terminal of another of said shift registers and a second input terminal supplied with said coincidence signal, said second AND gate generating said frame synchronizing signal at an output of said second AND gate; means for obtaining a vertical synchronizing signal, said means for obtaining including a step down circuit, responsive to said generated horizontal synchronizing signal, for stepping down the frequency of said generated horizontal synchronizing signal, said step down circuit being responsive to said generated frame synchronizing signal for resetting said step down circuit; second means for deriving said video signal and said first and second synchronizing signals from said still picture broadcasting signal; means for eLiminating said derived first and second synchronizing signals, said means for eliminating including means for generating a signal corresponding to said generated horizontal synchronizing signal and a means for subtracting said generated corresponding signal from said derived first and second synchronizing signals; means for adding said generated horizontal synchronizing signal and said vertical synchronizing signal to the eliminated position of said derived first and second synchronizing signals, said generated horizontal synchronizing signal and said vertical synchronizing signal having larger amplitudes than that of said derived video signal; and means for recording and for repeatedly reproducing said video signal, said generated horizontal synchronizing signal and said vertical synchronizing signal.

Claim 13

A receiver for receiving a composite still picture broadcasting signal having a multiplexed video signal and pulse code modulated audio signal, a first synchronizing signal synchronized with said pulse code modulated audio signal and a second synchronizing signal including a number of synchronizing signals required for the reproduction of said multiplexed video signal and pulse code modulated audio signal, one of said number of synchronizing signals being a horizontal synchronizing signal, another of said number of synchronizing signals being a frame synchronizing signal, said multiplexed video signal and pulse code modulated audio signal being time division multiplexed in a predetermined sequence, wherein said first and second synchronizing signals are inserted in predetermined positions in said video signal and in said pulse code modulated audio signal, said first and second syynchronizing signals not being amplitude separable from said multiplexed video signal and pulse code modulated audio signal, comprising: first means for deriving the first synchronizing signal synchronized with said pulse code modulated audio signal from said still picture broadcasting signal; a coincidence circuit, responsive to said derived first synchronizing signal, for generating a coincidence pulse at a time when said derived first synchronizing signal is supplied thereto; a plurality of shift registers, said registers receiving said composite still picture broadcasting signal and shifting said composite broadcasting signal at each bit into said registers a first AND gate having a first input terminal connected to an output terminal of one of said shift registers and a second input terminal supplied with said coincidence pulse, said first AND gate generating said horizontal synchronizing signal at an output of said first AND gate; a second AND gate having a first input terminal connected to an output terminal of another of said shift registers and a second input terminal supplied with said coincidence signal, said second AND gate generating said frame synchronizing signal at an output of said second AND gate; means for obtaining a vertical synchronizing signal, said means for obtaining including a step down circuit, responsive to said generated horizontal synchronizing signal, for stepping down the frequency of said generated horizontal synchronizing signal, said step down circuit being responsive to said generated frame synchronizing signal for resetting said step down circuit; second means for deriving said video signal and said first and second synchronizing signals from said still picture broadcasting signal; means for eLiminating said derived first and second synchronizing signals, said means for eliminating including means for generating a signal corresponding to said generated horizontal synchronizing signal and a means for subtracting said generated corresponding signal from said derived first and second synchronizing signals; means for adding said generated horizontal synchronizing signal and said vertical synchronizing signal to the eliminated position of said derived first and second synchronizing signals, said generated horizontal synchronizing signal and said vertical synchronizing signal having larger amplitudes than that of said derived video signal; and means for recording and for repeatedly reproducing said video signal, said generated horizontal synchronizing signal and said vertical synchronizing signal.