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. 17, 2009
Filed:
May. 19, 2004
Yeow Khai Chang, Singapore, SG;
Jerome Tjia, Singapore, SG;
Weng Fei Moo, Singapore, SG;
NXP, B. V., Eindhoven, NL;
Abstract
A method of transferring bulk and control data from a first device to a second device over a USB bus comprises storing transfer descriptors, each including a transfer descriptor header and payload data, in a buffer memory in the first device. The data is read in packets for transfer to the second device, with packets being read from the transfer descriptors cyclically. When the first and second transfer descriptor headers, in first and second transfer descriptors respectively, define a common endpoint, data packets are read from only the first transfer descriptor, until such time as it is detected that all data packets from the first transfer descriptor have been transmitted, and thereafter data packets are read from the second transfer descriptor.