Patent ID: 7512816
Filing Date: 2009-03-31
Classification: G06F,H04N,Y02D

Abstract:
1. A recording device comprising: one or more semiconductor memories; an obtaining unit operable to obtain an upper limit of current to be supplied from an accessing apparatus to the recording device; a command obtaining unit operable to obtain from the accessing apparatus at least one command, a type of which is one of a write command instructing data writing to the semiconductor memories and a read command instructing data reading from the semiconductor memories; an access unit operable to receive current supply from the accessing apparatus and access the semiconductor memories according to a control signal; and a control unit operable to calculate an access upper limit by subtracting an amount of current consumed by individual units other than the semiconductor memories and the access unit from the upper limit, set operating conditions of the access unit and the semiconductor memories according to the type of the obtained command, using the access upper limit, generate the control signal based on the obtained command and the operating conditions, and output the control signal.