MX9706586A - Sistema de comunicacion de co-canal de video e informacion. - Google Patents

Sistema de comunicacion de co-canal de video e informacion.

Info

Publication number
MX9706586A
MX9706586A MX9706586A MX9706586A MX9706586A MX 9706586 A MX9706586 A MX 9706586A MX 9706586 A MX9706586 A MX 9706586A MX 9706586 A MX9706586 A MX 9706586A MX 9706586 A MX9706586 A MX 9706586A
Authority
MX
Mexico
Prior art keywords
video signal
ancillary data
data
video
frequency
Prior art date
Application number
MX9706586A
Other languages
English (en)
Other versions
MXPA97006586A (es
Inventor
Daozheng Lu
Henry B Wheeler
Edgar W Aust
Robert A Dougherty
David A Kiewit
Original Assignee
Nielsen Media Res 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 US08/395,789 external-priority patent/US5737025A/en
Application filed by Nielsen Media Res Inc filed Critical Nielsen Media Res Inc
Publication of MX9706586A publication Critical patent/MX9706586A/es
Publication of MXPA97006586A publication Critical patent/MXPA97006586A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/081—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division the additional information signals being transmitted by means of a subcarrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

En la presente invencion se modula informacion auxiliar sobre una frecuencia portadora que está dentro de una porcion de densidad de baja energía de una banda de frecuencia de una señal de video, y la informacion portadora modulada (44) se combina con la señal de video (46) de manera que la portadora modulada está, ya sea en una region de video activa o en una region sobrexplorada de la señal de video. La informacion auxiliar se ruede propagar sobre varias frecuencias y sumarse en la salida del descodificador para aumentar la legibilidad de la informacion auxiliar en la salida del descodificador. Se puede usar el escalonamiento de frecuencias para añadir la informacion auxiliar a unas de una pluralidad de frecuencias seleccionadas dentro de la banda de frecuencia de la señal de video. Entonces los datos auxiliares se pueden repartir jerárquicamente entre segmentos secuenciales respectivos unívocamente especificados correspondientes a muchos puntos de distribucion de la señal de video.
MXPA/A/1997/006586A 1995-02-28 1997-08-28 Sistema de comunicacion de co-canal de video e informacion MXPA97006586A (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/395,789 US5737025A (en) 1995-02-28 1995-02-28 Co-channel transmission of program signals and ancillary signals
US08395789 1995-02-28
US08/482,820 US5737026A (en) 1995-02-28 1995-06-07 Video and data co-channel communication system
US08482820 1995-06-07

Publications (2)

Publication Number Publication Date
MX9706586A true MX9706586A (es) 1998-06-28
MXPA97006586A MXPA97006586A (es) 1998-10-30

Family

ID=

Also Published As

Publication number Publication date
CA2212816A1 (en) 1996-09-06
AR001099A1 (es) 1997-09-24
JPH11501177A (ja) 1999-01-26
EP0812510A1 (en) 1997-12-17
AU5023996A (en) 1996-09-18
AU695498B2 (en) 1998-08-13
US5737026A (en) 1998-04-07
BR9607135A (pt) 1997-11-25
WO1996027264A1 (en) 1996-09-06

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