INTERNATIONAL  TELECOMMUNICATION  UNION	

SUBSCRIPTION  CIRCULAR   No. 149
	Geneva,  4 May 1995

Order for the:

	ITU-R Handbook on “Digital television signals: coding and interfacing within studios”

	An order form for a Handbook on “Digital Television Signals: Coding and Interfacing within Studios”, is attached hereto. This Handbook, the publication of which was decided by ITU-R Study Group 11 is intended to be of direct and immediate interest to broadcasting engineers and service planners.

	The content is described overleaf.

	To order this Handbook, please complete the order form and return it to the ITU Sales Service.

Annex : Order form

ITU-R HANDBOOK ON “DIGITAL TELEVISION SIGNALS: CODING AND INTERFACING WITHIN STUDIOS”

	Although ITU-R standards were designed to be applied comprehensively, digital equipment has in fact been introduced into television studios on a fairly piecemeal basis.  Until now, the emphasis has been in those areas where new facilities unobtainable by analogue techniques (e.g. complicated picture manipulation) have become possible, or where (for example, in recording) there is a concern to avoid a progressive deterioration in the quality of the signal when it is kept in analogue form.
	Furthermore, the penetration of digital techniques has now reached the stage where it is necessary to consider the use of digital interconnections within switching and routing networks at the heart of major production centres, particularly when routing of HDTV signals will be required.
	This Handbook gives a summary of the background to what has been agreed so far in ITU-R, based largely on work already reported within Reports but also including references to published material outside of the ITU.
	Sections of this Handbook have been provided as a brief overview of the development of digital television coding and interfacing. The continuing work in this area is also described, and some of the developments which will lead to the standards of the future are highlighted.	

Date of publication :	June 1995	
Format	A4 (21 x 29.7 cm)	
Number of pages :	about 100	
Languages :	Separate editions in English, French and Spanish	
Price :	provided the customary number of orders is received, the price will be approximately as follows :
	Swiss francs
	
Catalogue Price	60.-
Administrations (ITU)	51.-	
ISBN :		English :	92-61-05581-8
French :	92-61-05582-6
Spanish	92-61-05583-4	

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	ORDER FORM	Annex to Circular No. 149  
ITU-R Handbook on “Digital television signals: coding and interfacing within studios”	

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