GB2228812B - Improvements in or relating to radio broadcast communication systems - Google Patents

Improvements in or relating to radio broadcast communication systems

Info

Publication number
GB2228812B
GB2228812B GB9002026A GB9002026A GB2228812B GB 2228812 B GB2228812 B GB 2228812B GB 9002026 A GB9002026 A GB 9002026A GB 9002026 A GB9002026 A GB 9002026A GB 2228812 B GB2228812 B GB 2228812B
Authority
GB
United Kingdom
Prior art keywords
relating
communication systems
radio broadcast
broadcast communication
radio
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 - Fee Related
Application number
GB9002026A
Other versions
GB2228812A (en
GB9002026D0 (en
Inventor
John K Stevens
Paul I Waterhouse
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.)
Telepanel Inc
Original Assignee
Telepanel Inc
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
Priority claimed from US06/909,548 external-priority patent/US4821291A/en
Application filed by Telepanel Inc filed Critical Telepanel Inc
Publication of GB9002026D0 publication Critical patent/GB9002026D0/en
Publication of GB2228812A publication Critical patent/GB2228812A/en
Application granted granted Critical
Publication of GB2228812B publication Critical patent/GB2228812B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2035—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers
    • H04L27/2042—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers with more than two phase states
    • H04L27/2046—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers with more than two phase states in which the data are represented by carrier phase
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/70—SSIS architectures; Circuits associated therewith
    • H04N25/76—Addressed sensors, e.g. MOS or CMOS sensors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/04—Electronic labels

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)
GB9002026A 1986-09-22 1990-01-30 Improvements in or relating to radio broadcast communication systems Expired - Fee Related GB2228812B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/909,548 US4821291A (en) 1986-09-22 1986-09-22 Improvements in or relating to signal communication systems
GB8722026A GB2197564B (en) 1986-09-22 1987-09-18 Improvements in or relating to radio broadcast communication systems

Publications (3)

Publication Number Publication Date
GB9002026D0 GB9002026D0 (en) 1990-03-28
GB2228812A GB2228812A (en) 1990-09-05
GB2228812B true GB2228812B (en) 1991-03-20

Family

ID=26292758

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9002026A Expired - Fee Related GB2228812B (en) 1986-09-22 1990-01-30 Improvements in or relating to radio broadcast communication systems

Country Status (1)

Country Link
GB (1) GB2228812B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5241467A (en) * 1992-04-30 1993-08-31 Ers Associates Limited Partnership Space management system
US5473832A (en) * 1992-10-23 1995-12-12 Electronic Retailing Information Systems Int'l Inc. Non-slidable display label
US5553412A (en) * 1993-03-25 1996-09-10 Electronic Retailing Systems International, Inc. Information display rail system
US5348485A (en) * 1993-04-12 1994-09-20 Electronic Retailing Systems Int'l Inc. Electronic price display system with vertical rail
DE69516568T2 (en) * 1994-03-04 2001-01-04 Ncr International, Inc. Extended wireless transmission system with modulated reflection
GB9621650D0 (en) * 1996-10-17 1996-12-11 Telepanel Sysems Inc Remotely controlled electronic display modules
NL1009268C2 (en) * 1998-05-27 1999-11-30 Leidsche Trust En Beheermaatsc Electronic article information system for shops.
US6650230B1 (en) 1998-11-19 2003-11-18 Ncr Corporation Modulated backscatter wireless communication system having an extended range
GB2347296A (en) * 1999-02-24 2000-08-30 Martin Stuart Christie Display systems

Also Published As

Publication number Publication date
GB2228812A (en) 1990-09-05
GB9002026D0 (en) 1990-03-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20030918