Patent ID: 7606941
Filing Date: 2009-10-20
Classification: G06F

Abstract:
1. A FIFO device for temporarily storing and transferring an input IEEE 1394 type packet through an IEEE 1394 type interface, said FIFO device comprising: a memory part configured to store said input packet; an input control part configured to control writing of write data to said memory part sequentially at a predetermined time interval according to input control signals from external to said input control part; and an output control part configured to control reading of stored data from said memory part sequentially at a predetermined time interval according to input control signals from external to said output control part, wherein said input control part determines, based on acknowledge information in a trailer part of said input packet stored in said memory part, whether or not said input packet should be transferred, and wherein when said input control part determines that said input packet should not be transferred, said input control part does not acknowledge a request from external to said input control part to read said input packet from said memory part, and allows said input packet to be overwritten by a new input packet, thereby deleting said input packet from said memory part.