ES470838A1 - Metodo para medir el cruce de vistas entre canales en siste-mas de radiodifusion de television por cable y aparato para su realizacion - Google Patents

Metodo para medir el cruce de vistas entre canales en siste-mas de radiodifusion de television por cable y aparato para su realizacion

Info

Publication number
ES470838A1
ES470838A1 ES470838A ES470838A ES470838A1 ES 470838 A1 ES470838 A1 ES 470838A1 ES 470838 A ES470838 A ES 470838A ES 470838 A ES470838 A ES 470838A ES 470838 A1 ES470838 A1 ES 470838A1
Authority
ES
Spain
Prior art keywords
crossview
channels
measuring
channel
broadcasting system
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
ES470838A
Other languages
English (en)
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.)
Communications Patents Ltd
Original Assignee
Communications Patents Ltd
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 Communications Patents Ltd filed Critical Communications Patents Ltd
Publication of ES470838A1 publication Critical patent/ES470838A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

Método para medir el cruce de vistas entre canales en sistemas de radiodifusión de televisión por cable y aparato para su realización, en cuyo método se aplica a un primer canal una señal de PREps, y la señal de un segundo canal es correlacionada con una secuencia idéntica para proporcionar una salida representativa del cruce de vistas entre el primero y el segundo canal.
ES470838A 1977-06-15 1978-06-15 Metodo para medir el cruce de vistas entre canales en siste-mas de radiodifusion de television por cable y aparato para su realizacion Expired ES470838A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14636/77A GB1575098A (en) 1977-06-15 1977-06-15 Method for measuring crossview between channels in a wired television broadcasting system

Publications (1)

Publication Number Publication Date
ES470838A1 true ES470838A1 (es) 1979-09-01

Family

ID=10044829

Family Applications (1)

Application Number Title Priority Date Filing Date
ES470838A Expired ES470838A1 (es) 1977-06-15 1978-06-15 Metodo para medir el cruce de vistas entre canales en siste-mas de radiodifusion de television por cable y aparato para su realizacion

Country Status (13)

Country Link
US (1) US4246608A (es)
JP (1) JPS5417617A (es)
AU (1) AU517346B2 (es)
BE (1) BE868087A (es)
CA (1) CA1135831A (es)
CH (1) CH642501A5 (es)
DE (1) DE2825282A1 (es)
ES (1) ES470838A1 (es)
FR (1) FR2394949A1 (es)
GB (1) GB1575098A (es)
NL (1) NL7806485A (es)
SE (1) SE7806839L (es)
ZA (1) ZA78284B (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470501A1 (fr) * 1979-11-22 1981-05-29 France Etat Equipement d'essai de televiseur recepteur de teletexte
DE3020921C2 (de) * 1980-06-03 1986-12-04 Robert Bosch Gmbh, 7000 Stuttgart System zur Kontrolle von digitalen Videosignalen
NL8300725A (nl) * 1983-02-25 1984-09-17 Optische Ind De Oude Delft Nv Werkwijze en inrichting voor het bepalen van de beeldoverdrachtskwaliteit van een afbeeldend systeem.
JPH0241526A (ja) * 1988-08-02 1990-02-09 Oki Electric Ind Co Ltd ディジタル信号プロセッサ
DE68919690T2 (de) * 1989-07-28 1995-04-13 Hewlett Packard Co Messung der Charakteristika eines optischen Rundfunknetzwerkes.
US5241538A (en) * 1990-01-18 1993-08-31 Matsushita Electric Industrial Co., Ltd. Transmission apparatus
JP2590644B2 (ja) * 1991-09-13 1997-03-12 日本電気株式会社 無線通信装置及び試験送信機
US5790523A (en) * 1993-09-17 1998-08-04 Scientific-Atlanta, Inc. Testing facility for a broadband communications system
US6795580B1 (en) * 1998-09-10 2004-09-21 Tektronix, Inc. Picture quality measurement using blockiness
JP2000269745A (ja) * 1999-03-18 2000-09-29 Ando Electric Co Ltd 雑音発生装置
US7216811B2 (en) * 2004-04-16 2007-05-15 Microscan Systems Incorporated Barcode scanner with linear automatic gain control (AGC), modulation transfer function detector, and selectable noise filter
JP5122483B2 (ja) * 2006-02-02 2013-01-16 トムソン ライセンシング 複数のチューナ受信器におけるクロストークを検出および防止する方法および装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278676A (en) * 1958-05-07 1966-10-11 Precon Process And Equipment C Apparatus for producing visual and auditory stimulation
US2987586A (en) * 1958-09-30 1961-06-06 Bell Telephone Labor Inc Cross-modulation measuring system
US3715508A (en) * 1967-09-15 1973-02-06 Ibm Switching circuits employing orthogonal and quasi-orthogonal pseudo-random code sequences
US3720789A (en) * 1969-07-28 1973-03-13 Plessey Telecommunications Res Electrical signalling systems using correlation detectors
US3735266A (en) * 1971-12-20 1973-05-22 Bell Telephone Labor Inc Method and apparatus for reducing crosstalk on cross-polarized communication links
US3891805A (en) * 1973-11-21 1975-06-24 James Loton Flanagan Digital signal detection in telephonic communication systems
GB1558168A (en) * 1975-06-20 1979-12-19 Indep Television Co Systems for broadcasting data simultaneously with but independently of television programmes
SE393236B (sv) * 1975-08-15 1977-05-02 Ericsson Telefon Ab L M Forfarande for samtidig alstring av ett antal, svagt korrelerade pseudo-random pulstag samt anordning for utforande av forfarandet

Also Published As

Publication number Publication date
US4246608A (en) 1981-01-20
CA1135831A (en) 1982-11-16
NL7806485A (nl) 1978-12-19
FR2394949A1 (fr) 1979-01-12
DE2825282A1 (de) 1978-12-21
JPS5417617A (en) 1979-02-09
ZA78284B (en) 1979-06-27
BE868087A (fr) 1978-10-02
AU517346B2 (en) 1981-07-23
SE7806839L (sv) 1978-12-16
GB1575098A (en) 1980-09-17
CH642501A5 (de) 1984-04-13
AU3710978A (en) 1979-12-20

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990405