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:
May. 04, 2010
Filed:
Aug. 20, 2007
Nagao Shimada, Kawasaki, JP;
Nagao Shimada, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A communication device for transmitting and receiving frames, which is capable of preventing an overflow of a buffer memory due to clock error even when the utilization factor of a transmission line is high. A frame holding section stores frames awaiting transmission. A transmission section sequentially takes out each frame from the frame holding section and outputs the frame to the transmission line, based on a control signal indicative of timing for transmitting the frame. A transmission control section initially outputs the control signal at a repetition period of T clocks (T≧2) and acquires the number of waiting frames in the frame holding section every N×T clocks (N≧2). When the number of waiting frames is equal to K (K≧1), the transmission control section makes some of transmission intervals shorter than T clocks to thereby output the control signal N+K times during next N×T clocks