Patent ID: 7187403
Filing Date: 2007-03-06
Classification: H04L,H04N

Abstract:
1. A method of setting an environment for a portable data storage device that has an interface for interfacing with a host computer thereby enabling a mutual data transmission with the host computer, the method comprising: assigning one or more environment setting command code in a reserve code area that is not in use, the mutual data transmission between the portable data storage device and the computer being performed by exchange of a command frame via the interface, the command frame having an operation code area and an operand area; determining whether a code contained in the operation code area of the command frame received from the computer is one of the one or more environment setting command code; and if the code contained in the operation code area of the command frame is one of the one or more environment setting command code, updating environment setting data stored in the portable data storage device with the environment setting data contained in the operand area of the command frame, wherein the environment setting command code comprises a time setting command code, and the environment setting data comprises time data representing a current time.