GB1387428A - Filtering system - Google Patents

Filtering system

Info

Publication number
GB1387428A
GB1387428A GB3893074A GB3893074A GB1387428A GB 1387428 A GB1387428 A GB 1387428A GB 3893074 A GB3893074 A GB 3893074A GB 3893074 A GB3893074 A GB 3893074A GB 1387428 A GB1387428 A GB 1387428A
Authority
GB
United Kingdom
Prior art keywords
band
frequency
pass
filter
energy
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
GB3893074A
Other languages
English (en)
Inventor
Leonard S Golding
Ronald K Garlow
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.)
Comsat Corp
Original Assignee
Comsat 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 Comsat Corp filed Critical Comsat Corp
Publication of GB1387428A publication Critical patent/GB1387428A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
    • 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
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/186—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Color Television Systems (AREA)
  • Processing Of Color Television Signals (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Analogue/Digital Conversion (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Networks Using Active Elements (AREA)
  • Radio Relay Systems (AREA)
  • Picture Signal Circuits (AREA)
GB3893074A 1971-01-11 1972-01-11 Filtering system Expired GB1387428A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10538671A 1971-01-11 1971-01-11

Publications (1)

Publication Number Publication Date
GB1387428A true GB1387428A (en) 1975-03-19

Family

ID=22305545

Family Applications (3)

Application Number Title Priority Date Filing Date
GB3893074A Expired GB1387428A (en) 1971-01-11 1972-01-11 Filtering system
GB132572A Expired GB1387427A (en) 1971-01-11 1972-01-11 Tv communications system
GB4241574A Expired GB1387429A (en) 1971-01-11 1972-01-11 Communication system

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB132572A Expired GB1387427A (en) 1971-01-11 1972-01-11 Tv communications system
GB4241574A Expired GB1387429A (en) 1971-01-11 1972-01-11 Communication system

Country Status (7)

Country Link
JP (1) JPS588193B1 (https=)
CA (1) CA956725A (https=)
DE (1) DE2201066C2 (https=)
FR (1) FR2121761B1 (https=)
GB (3) GB1387428A (https=)
IT (1) IT948824B (https=)
SE (3) SE379263B (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2068673B (en) * 1980-01-30 1983-09-07 Sony Corp Decoding and recoding composite digital colour television signals
JPS6199091U (https=) * 1984-12-06 1986-06-25

Also Published As

Publication number Publication date
SE402692B (sv) 1978-07-10
DE2201066A1 (de) 1972-08-10
GB1387429A (en) 1975-03-19
SE379263B (https=) 1975-09-29
CA956725A (en) 1974-10-22
SE7506409L (sv) 1975-06-04
JPS588193B1 (https=) 1983-02-15
SE402691B (sv) 1978-07-10
GB1387427A (en) 1975-03-19
DE2201066C2 (de) 1983-01-20
FR2121761A1 (https=) 1972-08-25
FR2121761B1 (https=) 1973-06-29
IT948824B (it) 1973-06-11
SE7506408L (sv) 1975-06-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee