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:
Oct. 30, 2001
Filed:
Dec. 29, 1998
Noriyuki Suzuki, Tokyo, JP;
Hisatsugu Naito, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In the event that a host device does not have a transmitting FIFO and receiving FIFO independently, but shares one FIFO for both transmission and reception, and an error occurs at the destination of transmission, the host cannot receive error information unless the FIFO is emptied. Accordingly, the printer according to the present invention secures a stand-by area in the reception buffer that is the same capacity as the FIFO at the host. In the event that an error occurs, transmission of data from the host is stopped, and if there is no available area except for the stand-by area within the reception buffer, the stand-by area is released to empty the FIFO.