Patent ID: 7668977
Filing Date: 2010-02-23
Classification: H04L

Abstract:
1. A method for exchanging information between a first device and a second device connected via a communication link, the communication link supporting a query command and at least a further command, each command including a specific command code, the method comprising: transmitting a query command code and data from the first device via the communication link, the data identifying a specific command; receiving the query command code and the data at the second device; transmitting reply data from the second device via the communication link, the reply data including at least a first segment and second segment; and receiving the reply data at the first device, wherein the first segment includes information indicating whether the specific command is supported, wherein, if the specific command is not supported, the second segment includes information identifying an alternative command to the specific command, wherein the first segment of the reply data is a 1-bit word and the second segment of the reply data is a 7-bit word.