JPS571924B2 - - Google Patents

Info

Publication number
JPS571924B2
JPS571924B2 JP9160573A JP9160573A JPS571924B2 JP S571924 B2 JPS571924 B2 JP S571924B2 JP 9160573 A JP9160573 A JP 9160573A JP 9160573 A JP9160573 A JP 9160573A JP S571924 B2 JPS571924 B2 JP S571924B2
Authority
JP
Japan
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
JP9160573A
Other versions
JPS4987220A (ja
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 filed Critical
Publication of JPS4987220A publication Critical patent/JPS4987220A/ja
Publication of JPS571924B2 publication Critical patent/JPS571924B2/ja
Expired legal-status Critical Current

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
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/02—Amplitude modulation, i.e. PAM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/04—Colour television systems using pulse code modulation
    • 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
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Amplitude Modulation (AREA)
  • Television Systems (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
JP9160573A 1972-08-15 1973-08-15 Expired JPS571924B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3807572A GB1432373A (en) 1972-08-15 1972-08-15 Apparatus for producing digised signals for defining an amplitude modulated sub-carrier

Publications (2)

Publication Number Publication Date
JPS4987220A JPS4987220A (ja) 1974-08-21
JPS571924B2 true JPS571924B2 (ja) 1982-01-13

Family

ID=10401002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9160573A Expired JPS571924B2 (ja) 1972-08-15 1973-08-15

Country Status (4)

Country Link
US (1) US3939303A (ja)
JP (1) JPS571924B2 (ja)
DE (1) DE2340913C3 (ja)
GB (1) GB1432373A (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8203599A (nl) * 1982-09-17 1984-04-16 Philips Nv Hoofdeinde en ontvanger voor een signaaldistributiesysteem.
DE3328025C1 (de) * 1983-08-03 1985-02-14 Institut für Rundfunktechnik GmbH, 8000 München Farbtraegermodulator
IL78972A (en) * 1985-06-14 1991-04-15 Mitsubishi Electric Sales Amer Video optimized modulator-demodulator
US4973977A (en) * 1988-11-29 1990-11-27 Comlux Digital to amplitude modulated analog converter
US5532820A (en) * 1990-08-17 1996-07-02 Samsung Electronics Co., Ltd. Digital modulators for use with sub-nyquist sampling of raster-scanned samples of image intensity
DE4426935A1 (de) * 1994-07-29 1996-02-01 Rohde & Schwarz Digitaler Restseitenband-Modulator für Videosignale

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3548342A (en) * 1968-10-15 1970-12-15 Ibm Digitally controlled amplitude modulation circuit
US3793597A (en) * 1971-11-08 1974-02-19 Tull Aviation Corp Modulation synthesis method and apparatus

Also Published As

Publication number Publication date
GB1432373A (en) 1976-04-14
DE2340913B2 (de) 1981-04-02
JPS4987220A (ja) 1974-08-21
DE2340913A1 (de) 1974-03-28
US3939303A (en) 1976-02-17
DE2340913C3 (de) 1981-10-15

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