Patent ID: 6772353
Filing Date: 2004-08-03
Classification: G06F,Y02D

Abstract:
An information processing apparatus capable of connecting or including a modem thereto or therein, comprising:a signal line disposed in the modem for notifying the information processing apparatus that a communication line is busy; a modem power on-off circuit for turning power of the modem on and off at a desired point of time; and a mask circuit for forcibly setting a transmission enable signal of the modem to a disable state, wherein: the power of the modem is turned off in accordance with a state of the signal line indicating that the communication line is busy and consumption power of the information processing apparatus is thereby minimized; and during a period of time in which the modem power is turned off for the minimization of consumption power and during a period of time from when the modem is powered to when the modem is completely initialized to normally conduct signal transmission and reception, the mask circuit is controlled to forcibly set the transmission enable signal of the modem to the disable state to avoid an erroneous data transmission to the modem, thereby preventing loss of the transmission data.