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:
Jan. 07, 1997
Filed:
Jun. 06, 1995
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
When an apparatus C which shares the media with apparatuses A and B desires to transmit an RTS packet, apparatus C inhibits transmission of the RTS packet for a fixed waiting time Tm plus a transmission inhibition period which varies depending on a type of a packet in a sensed carrier. In other words, when apparatus C senses an RTS packet of apparatus A, apparatus C inhibits transmission for a packet transmission inhibition period 101 resulting from reception of RTS. When apparatus C senses a CTS packet of apparatus B, apparatus C inhibits transmission for a packet transmission inhibition period 102 resulting from reception of CTS. When apparatus C senses a data packet, apparatus C inhibits transmission for a packet transmission inhibition period 103 resulting from reception of a data packet. When apparatus C senses an ACK packet of apparatus B, apparatus C inhibits transmission for a packet transmission inhibition period 104 resulting from reception of an ACK. As a result, a data communication apparatus which achieves efficient communication between a plurality of data communication apparatuses which share the same media is provided.