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    TELEVISION SYSTEMS AND SUBSYSTEMS THEREFOR
    2.
    发明专利
    TELEVISION SYSTEMS AND SUBSYSTEMS THEREFOR 未知

    公开(公告)号：GB2107151A

    公开(公告)日：1983-04-20

    申请号：GB8221308

    申请日：1982-07-23

    Applicant: RCA CORP

    Inventor： DISCHERT ROBERT ADAMS ,  OAKLEY CHARLES BURKHARDT

    IPC: H04N7/015 ,  H04N7/08 ,  H04N7/12 ,  H04N11/12 ,  H04N11/24 ,  H04N9/32

    Abstract: A television arrangement generates signals from independent pairs of adjacent lines. The signals are separately summed and differenced to produce S and DELTA signals. The S signal is representative of the luminance of a scan between the original scans, and the DELTA represents vertical resolution. The signals are transmitted to a monitor for generating a high-vertical-resolution picture. Where the display is a color TV receiver, the DELTA signal may be buried within the chroma channel by frequency interleaving with the DELTA signal occuring only in locations representing high-frequency vertical information. The buried DELTA signal is invisible on a conventional receiver. Other independent data may be coupled through the chroma channel by frequency interleaving.

    3.
    发明专利
    未知

    公开(公告)号：IT1205261B

    公开(公告)日：1989-03-15

    申请号：IT2264982

    申请日：1982-07-29

    Applicant: RCA CORP

    Inventor： OAKLEY CHARLES BURKHARDT ,  DISCHERT ROBERT ADAMS

    IPC: H04N7/015 ,  H04N7/08 ,  H04N7/12 ,  H04N11/12 ,  H04N11/24 ,  H04N

    Abstract: A television arrangement generates signals from independent pairs of adjacent lines. The signals are separately summed and differenced to produce S and DELTA signals. The S signal is representative of the luminance of a scan between the original scans, and the DELTA represents vertical resolution. The signals are transmitted to a monitor for generating a high-vertical-resolution picture. Where the display is a color TV receiver, the DELTA signal may be buried within the chroma channel by frequency interleaving with the DELTA signal occuring only in locations representing high-frequency vertical information. The buried DELTA signal is invisible on a conventional receiver. Other independent data may be coupled through the chroma channel by frequency interleaving.

    TWO-WAY CABLE TELEVISION SYSTEM
    5.
    发明专利
    TWO-WAY CABLE TELEVISION SYSTEM 未知

    公开(公告)号：AU7212974A

    公开(公告)日：1976-02-12

    申请号：AU7212974

    申请日：1974-08-08

    Applicant: RCA CORP

    Inventor： OAKLEY CHARLES BURKHARDT ,  SCHWARZ HANS GEORGE

    IPC: H04N7/173 ,  H04N7/14

    Abstract: 1470409 Closed circuit television systems RCA CORPORATION 31 July 1974 [13 Aug 1973] 33693/74 Heading H4R In a closed circuit television distribution system in which return signals, e.g. in respect of burglar alarms, fire alarms, polling, pay to, meter reading &c., are sent from the subscribers to the central station over the same lines as television signals are sent from the central station to the subscribers, one, or groups of, the subscribers may be isolated, so far as return signals are concerned, from the central station either when the return signal from that subscriber, or group of subscribers, is below a predetermined level, or in the absence of a particular interrogation code transmitted from the central station in respect of that subscriber or group of subscribers. As described television signals are transmitted from a central station 10, Fig. 1, in the band of 50 to 270 MHz via a trunk line 22, with repeaters 40, 41 &c., bridger amplifiers 44, feeder lines 24, 26, 28, and line repeaters 50, 51, 52 &c., to subscribers, e.g. 100, branched off from tapping points 30, 32 &c. Return signals from subscribers, in the band 5 to 30 MHz, are by-passed round the repeater amplifiers by frequency diplexers 75 and return signal amplifiers such as 60, 61, 70, 71, &c. At each return signal amplifier, e.g. 60, which is adjacent a bridging amplifier, e.g. 44, and at each return amplifier, e.g. 70, adjacent the head end, a muting circuit, 82, Fig. 2A, is provided which open circuits the return amplifier 80 output if the signal thereat is below a predetermined level. The switch may be preceded by a delay circuit 84, Fig. 2B, and/or an a.g.c. circuit 86, Fig. 2C, to enable switch operation before the signal to be switched arrives and/or to restore the signal level to a predetermined level. Alternatively the switch can be closed by an interrogation signal, in respect of the subscribers connected to that trunk, and feeder, transmitted from the central station and detected adjacent the switched return amplifier. The arrangement reduces noise on the return signals received at the head end since only noise from subscribers lines actually engaged in returning signals reaches the central station.

    6.
    发明专利
    未知

    公开(公告)号：FR2510853B1

    公开(公告)日：1987-08-21

    申请号：FR8213418

    申请日：1982-07-30

    Applicant: RCA CORP

    Inventor： OAKLEY CHARLES BURKHARDT ,  DISCHERT ROBERT ADAMS

    IPC: H04N7/015 ,  H04N7/08 ,  H04N7/12 ,  H04N11/12 ,  H04N11/24 ,  H04N7/00 ,  H04N3/30

    Abstract: A television arrangement generates signals from independent pairs of adjacent lines. The signals are separately summed and differenced to produce S and DELTA signals. The S signal is representative of the luminance of a scan between the original scans, and the DELTA represents vertical resolution. The signals are transmitted to a monitor for generating a high-vertical-resolution picture. Where the display is a color TV receiver, the DELTA signal may be buried within the chroma channel by frequency interleaving with the DELTA signal occuring only in locations representing high-frequency vertical information. The buried DELTA signal is invisible on a conventional receiver. Other independent data may be coupled through the chroma channel by frequency interleaving.

    9.
    发明专利
    未知

    公开(公告)号：DE3228597A1

    公开(公告)日：1983-02-17

    申请号：DE3228597

    申请日：1982-07-30

    Applicant: RCA CORP

    Inventor： OAKLEY CHARLES BURKHARDT ,  DISCHERT ROBERT ADAMS

    IPC: H04N7/015 ,  H04N7/08 ,  H04N7/12 ,  H04N11/12 ,  H04N11/24 ,  H04N9/02 ,  H04N7/18 ,  H04N3/34

    Abstract: A television arrangement generates signals from independent pairs of adjacent lines. The signals are separately summed and differenced to produce S and DELTA signals. The S signal is representative of the luminance of a scan between the original scans, and the DELTA represents vertical resolution. The signals are transmitted to a monitor for generating a high-vertical-resolution picture. Where the display is a color TV receiver, the DELTA signal may be buried within the chroma channel by frequency interleaving with the DELTA signal occuring only in locations representing high-frequency vertical information. The buried DELTA signal is invisible on a conventional receiver. Other independent data may be coupled through the chroma channel by frequency interleaving.

    10.
    发明专利
    未知

    公开(公告)号：FR2510853A1

    公开(公告)日：1983-02-04

    申请号：FR8213418

    申请日：1982-07-30

    Applicant: RCA CORP

    Inventor： OAKLEY CHARLES BURKHARDT ,  DISCHERT ROBERT ADAMS

    IPC: H04N7/015 ,  H04N7/08 ,  H04N7/12 ,  H04N11/12 ,  H04N11/24 ,  H04N7/00 ,  H04N3/30

    Abstract: A television arrangement generates signals from independent pairs of adjacent lines. The signals are separately summed and differenced to produce S and DELTA signals. The S signal is representative of the luminance of a scan between the original scans, and the DELTA represents vertical resolution. The signals are transmitted to a monitor for generating a high-vertical-resolution picture. Where the display is a color TV receiver, the DELTA signal may be buried within the chroma channel by frequency interleaving with the DELTA signal occuring only in locations representing high-frequency vertical information. The buried DELTA signal is invisible on a conventional receiver. Other independent data may be coupled through the chroma channel by frequency interleaving.

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