Patent ID: 7894085
Filing Date: 2011-02-22
Classification: G03G,G06K,H04N

Abstract:
1. A printing apparatus comprising: a first receiving unit adapted to receive data transmitted from an external apparatus; a printing unit adapted to execute print processing based upon print data if the print data has been received by the first receiving unit; a first control unit adapted to perform an interpretation processing for interpreting whether content of data received by the first receiving unit is a print request for requesting the print processing, and to perform a processing based on the print request; a clock supply unit adapted to supply an operating clock to the first control, Unit, the operating clock for causing the first control unit to be operated; and a second control unit adapted to control a clock frequency of the operating clock supplied by the clock supply unit; wherein the second control unit controls the clock supply unit not to supply the operating clock to the first control unit in a case where the printing apparatus is in an inactive state, wherein in response to receipt of data by the first receiving unit while the printing apparatus is in the inactive state, the second control unit causes the clock supply unit to supply the operating clock of a first frequency to the first control unit, for causing the first control unit to perform the interpretation processing, and wherein, in a case where the first control unit interprets that the received data is the print request, the second control unit, in response to a notification from the first control unit, causes the clock supply unit to supply the operating clock of a second frequency to the first control unit, for causing the first control unit to perform the processing based on the print data, the second clock frequency being higher than the first clock frequency.