NDLI: An automatic TV tuner alignment system

Content Provider	IEEE Xplore Digital Library
Author	DeVille, Y.
Copyright Year	1975
Abstract	A new approach to automatic TV tuner alignment is presented. It contains two aspects, i.e. hardware (consisting of piecewise-linear transcoders) and software algorithms (which optimize the transfer functions of these transcoders with respect to measured data points). This approach allows one to choose the desired tuner performance and it yields a major improvement of the performance/price ratio compared to the conventional solution. More precisely, the performance is defined by the maximum frequency mistuning of each RF filter. For given transcoder memory sizes, the proposed approach improves the performance (i.e. decreases mistunings) by a factor of 2.7 to 4.5. Or, for a given performance, it reduces the transcoder memory sizes by a factor of 2. The target performance considered is a maximum frequency mistuning of 600 kHz in the overall frequency band of operation. This target is reached with a memory containing only 90 bits per RF filter. The proposed approach is also a good candidate for future high-definition TV standards, which will require lower frequency mistunings. Besides its use in TV tuner alignment, it is attractive in all systems requiring very simple and/or fast adaptive transcoders. It may be applied to the automatic electronic tuning of integrated active filters and phase shifters.
Sponsorship	IEEE Consumer Electronics Society
Starting Page	1050
Ending Page	1060
Page Count	11
File Size	1095032
File Format	PDF
ISSN	00983063
Volume Number	41
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	TV Tuners Active filters Radio frequency Hardware Piecewise linear techniques Software algorithms Transfer functions Software measurement HDTV
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Media Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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