Patent Number: 6,311,237

Title: System including single host buffer for transmit and receive data andreception buffer in interface device having stand-by area for use by hostbuffer when abnormal state is detected

Abstract: In the event that a host device does not have a transmitting FIFO andreceiving FIFO independently, but shares one FIFO for both transmissionand reception, and an error occurs at the destination of transmission, thehost cannot receive error information unless the FIFO is emptied.Accordingly, the printer according to the present invention secures astand-by area in the reception buffer that is the same capacity as theFIFO at the host. In the event that an error occurs, transmission of datafrom the host is stopped, and if there is no available area except for thestand-by area within the reception buffer, the stand-by area is releasedto empty the FIFO.

Inventors: Suzuki; Noriyuki (Tokyo, JP), Naito; Hisatsugu (Tokyo, JP)


International Classification:

Expiration Date: 10/32013