TW506221B - RF back channel for DTV - Google Patents

RF back channel for DTV Download PDF

Info

Publication number
TW506221B
TW506221B TW089125883A TW89125883A TW506221B TW 506221 B TW506221 B TW 506221B TW 089125883 A TW089125883 A TW 089125883A TW 89125883 A TW89125883 A TW 89125883A TW 506221 B TW506221 B TW 506221B
Authority
TW
Taiwan
Prior art keywords
vsb
digital
sideband
legacy
stream
Prior art date
Application number
TW089125883A
Other languages
English (en)
Chinese (zh)
Inventor
Raymond Hauge
Gary Sgrignoli
Paul Snopko
Original Assignee
Zenith Electronics 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 Zenith Electronics Corp filed Critical Zenith Electronics Corp
Application granted granted Critical
Publication of TW506221B publication Critical patent/TW506221B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
    • H04N21/6168—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving cable transmission, e.g. using a cable modem
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Communication Control (AREA)
TW089125883A 1999-12-30 2000-12-05 RF back channel for DTV TW506221B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47667399A 1999-12-30 1999-12-30

Publications (1)

Publication Number Publication Date
TW506221B true TW506221B (en) 2002-10-11

Family

ID=23892792

Family Applications (1)

Application Number Title Priority Date Filing Date
TW089125883A TW506221B (en) 1999-12-30 2000-12-05 RF back channel for DTV

Country Status (8)

Country Link
KR (1) KR20020067923A (es)
AR (1) AR028885A1 (es)
AU (1) AU1662701A (es)
BR (1) BR0016856A (es)
CA (1) CA2392683A1 (es)
MX (1) MXPA02006552A (es)
TW (1) TW506221B (es)
WO (1) WO2001050757A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6940936B2 (en) * 2001-11-26 2005-09-06 Thomson Licensing S.A. Alternate timing signal for a vestigial sideband modulator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5535206A (en) * 1994-11-14 1996-07-09 Zenith Electronics Corporation Upstream data transmission system for cable television
GB9602809D0 (en) * 1996-02-12 1996-04-10 Northern Telecom Ltd A bidirectional communications network
US6154095A (en) * 1997-02-27 2000-11-28 Seiko Epson Corporation Phase locked loop clock source provided with a plurality of frequency adjustments

Also Published As

Publication number Publication date
CA2392683A1 (en) 2001-07-12
MXPA02006552A (es) 2003-04-10
WO2001050757A1 (en) 2001-07-12
AR028885A1 (es) 2003-05-28
AU1662701A (en) 2001-07-16
KR20020067923A (ko) 2002-08-24
BR0016856A (pt) 2002-09-10

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Legal Events

Date Code Title Description
GD4A Issue of patent certificate for granted invention patent
MM4A Annulment or lapse of patent due to non-payment of fees