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:
Aug. 19, 2003
Filed:
Mar. 15, 2000
Vincent J. Bastiani, San Jose, CA (US);
Tony Kwan, Milpitas, CA (US);
Adaptec, Inc., Milpitas, CA (US);
Abstract
A method for communicating data and control from a host computer to a device is provided. The method includes generating a packet at the host computer and transmitting the packet to the device. The device responding to the packet with a handshake, and the handshake includes one of an ACK, a NACK, and an ALERT. The ACK is indicative that the packet was received without errors and a next packet in a sequence of packets can be sent to the device, the NACK is indicative that the packet was received without errors but a re-transmission should be attempted, and the ALERT is indicative of an error condition at the device and a re-transmission should not be attempted. In this example, the packet has a packet format including: (a) a synchronization field; (b) a packet type (PT) field following the synchronization field; (c) a byte count (BC) field for defining a length of data for the packet; (d) a data type (DT) field for defining whether the data is one of link control, device control, and device data; and (e) a data field.