CA946058A - Channel monitoring system - Google Patents

Channel monitoring system

Info

Publication number
CA946058A
CA946058A CA130,746A CA130746A CA946058A CA 946058 A CA946058 A CA 946058A CA 130746 A CA130746 A CA 130746A CA 946058 A CA946058 A CA 946058A
Authority
CA
Canada
Prior art keywords
monitoring system
channel monitoring
channel
monitoring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA130,746A
Other versions
CA130746S (en
Inventor
John R. Thompson
Robert L. Schoenbeck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RCA Corp
Original Assignee
RCA Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Priority to CA187,851A priority Critical patent/CA954962A/en
Application granted granted Critical
Publication of CA946058A publication Critical patent/CA946058A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17327—Transmission or handling of upstream communications with deferred transmission or handling of upstream communications
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel
    • G08B26/002—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel only replying the state of the sensor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/21—Billing for the use of broadcast information or broadcast-related information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/38—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space
    • H04H60/41—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas
    • H04H60/43—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas for identifying broadcast channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
    • H04H60/93—Wired transmission systems
    • H04H60/96—CATV systems
    • H04H60/97—CATV systems using uplink of the CATV systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/41—Jamming having variable characteristics characterized by the control of the jamming activation or deactivation time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/30—Aspects of broadcast communication characterised by the use of a return channel, e.g. for collecting users' opinions, for returning broadcast space/time information or for requesting data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/70—Aspects of broadcast communication characterised in that receivers can be addressed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/14—Jamming or countermeasure used for a particular application for the transfer of light or images, e.g. for video-surveillance, for television or from a computer screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N2007/17372—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal the upstream transmission being initiated or timed by a signal from upstream of the user terminal
CA130,746A 1970-12-28 1971-12-21 Channel monitoring system Expired CA946058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA187,851A CA954962A (en) 1970-12-28 1973-12-11 Channel monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10181870A 1970-12-28 1970-12-28

Publications (1)

Publication Number Publication Date
CA946058A true CA946058A (en) 1974-04-23

Family

ID=22286569

Family Applications (1)

Application Number Title Priority Date Filing Date
CA130,746A Expired CA946058A (en) 1970-12-28 1971-12-21 Channel monitoring system

Country Status (9)

Country Link
US (1) US3733430A (en)
AU (1) AU474243B2 (en)
BE (1) BE777379A (en)
CA (1) CA946058A (en)
CH (1) CH560493A5 (en)
DE (1) DE2164719B2 (en)
ES (1) ES398271A1 (en)
FR (1) FR2120024B1 (en)
GB (1) GB1380917A (en)

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US5319453A (en) * 1989-06-22 1994-06-07 Airtrax Method and apparatus for video signal encoding, decoding and monitoring
US5341216A (en) * 1989-09-29 1994-08-23 Saskatchewan Telecommunications CATV channel access control and metering apparatus
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US3676580A (en) * 1970-06-01 1972-07-11 Video Information Systems Interrogated transponder system

Also Published As

Publication number Publication date
FR2120024A1 (en) 1972-08-11
DE2164719B2 (en) 1977-10-13
FR2120024B1 (en) 1977-01-28
DE2164719A1 (en) 1972-07-20
CH560493A5 (en) 1975-03-27
US3733430A (en) 1973-05-15
AU3722071A (en) 1973-06-28
GB1380917A (en) 1975-01-15
BE777379A (en) 1972-04-17
AU474243B2 (en) 1976-07-15
ES398271A1 (en) 1974-08-01

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