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. 20, 2011
Filed:
Jun. 30, 2005
Kazuo Aoki, Kawasaki, JP;
Kazuo Aoki, Kawasaki, JP;
Fujitsu Semiconductor Limited, Yokohama, JP;
Abstract
A communication data controller is provided which is capable of correctly retransmitting transmission data even if a block of the transmission data exceeding a FIFO (First-In First-Out) memory is written in an overwriting manner to the FIFO memory. The memory stores transmission data to be transmitted to a communication device. Transmission data stored in the memory is written and read to and from the FIFO memory by a CPU (Central Processing Unit). A DMAC (Direct Memory Access Controller) driver, when a request for retransmission of a block is made in the case where the block of transmission data exceeding a capacity of the FIFO memory is written to the FIFO memory, drives the DMAC and transfers the block being stored in the memory to the communication data controller.