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:
Sep. 26, 2017
Filed:
Dec. 11, 2013
Analog Devices, Inc., Norwood, MA (US);
Stuart Patterson, East Walpole, MA (US);
ANALOG DEVICES, INC., Norwood, MA (US);
Abstract
In an example embodiment, a power switching circuit of an automobile audio bus (AB) chip is provided in a bi-directional, multi-node two-wire conductor system that includes a plurality of AB chips interconnected on a twisted wire pair bus (AB bus), with at least one AB chip functioning as a master and the remaining AB chips functioning as slaves. The power switching circuit of the AB chip powers up a next downstream AB chip in the AB bus sequentially according to a power switching procedure, and the power switching circuit is configured to detect faults in the AB bus before, during, and after the power switching procedure. Each AB chip enables power to the next downstream AB chip without risk of damage to any components in the system due to line faults on the downstream AB bus, or collapse of the power supply at the local AB chip.