Method and apparatus for preprocessing in a common-format, input signals of, or output signals for, interfaces of different type

(19)

(11)

EP 1 455 471 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	04.05.2011 Bulletin 2011/18

(43)	Date of publication A2:
	08.09.2004 Bulletin 2004/37

(21)	Application number: 03300203.1

(22)	Date of filing: 07.11.2003

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International Patent Classification (IPC):

H04H 7/00^(0000.00)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
	Designated Extension States:
	AL LT LV MK

(30)

Priority:

12.02.2003 EP 03090038

(71)	Applicant: Thomson Licensing
	92130 Issy-les-Moulineaux (FR)

(72)	Inventors:
	Schrieber, Ulrich 30827 Garbsen (DE) Schneider, Markus 30159 Hannover (DE) Gries, Ulrich 30419 Hannover (DE)

(74)	Representative: Hartnack, Wolfgang et al
	Deutsche Thomson OHG European Patent Operations Karl-Wiechert-Allee 74 30625 Hannover 30625 Hannover (DE)

(54)	Method and apparatus for preprocessing in a common-format, input signals of, or output signals for, interfaces of different type

(57) In audio processing technology there are interfaces of different type, the different interface types being associated with differing sample clock frequencies and/or differing data frame or data word formats. In some applications it is desired do process audio signals that stem from such interfaces of different type. According to the invention the input signals of the interfaces of different type are preprocessed for a subsequent common-format central processing, using a synchronisation to the common system clock, channel decoding according to the differing channel protocols related to the different-type interfaces, and processing the resulting PCM bitstream format signals so as to form therefrom sample words that are stored in an intermediate store from which the sample words are fed to the central processing.

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