The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2006
Filed:
Aug. 12, 2002
Ingo Volkening, Munich, DE;
Jochen Kraus, Munich, DE;
Gunther Fenzl, Unterbiberg, DE;
Infineon Technologies AG, Munich, DE;
Abstract
A DSL communication apparatus with lifeline functionality is provided, the DSL communication apparatus () in particular being suitable for CVoDSL ('Channelized Voice over Digital Subscriber Line') transmission. The DSL communication apparatus () comprises a central processing unit () which detects a local power failure state of a local power supply unit () being associated with the DSL communication apparatus (). In this case, the central processing unit () changes the operation of the DSL communication apparatus () from a normal operation mode to an intermediate operation mode, generates an interrupt for stopping a voice coprocessor unit (), initializes a download of a lifeline operation firmware from a FLASH memory () to the voice coprocessor unit (), and then starts a new initialization of the voice coprocessor unit (). Thereafter, the central processing unit () changes the operation of the DSL communication apparatus () from the intermediate operation mode to the lifeline operation mode by switching the power supply of the DSL communication apparatus () from the local power supply unit () to an auxiliary power supply unit () being coupled to the transmission line ().