The present invention provides an information processing apparatus capable of mounting an optional hardware. The information processing apparatus comprises a processor, an image processing circuit and a socket to which the optional hardware is to be mounted, wherein the optional hardware being connected to the socket communicates with the image processing circuit. The processor transmits a predetermined packet to the optional hardware mounted to the socket, receive a response packet to the predetermined packet from the image processing circuit, determines whether or not the received response packet is an expected response packet, and controls supplying power to the optional hardware in accordance with a determination result of the received response packet.

An image processing apparatus comprises a CPU for controlling the image processing apparatus and a microcomputer that verifies alteration of a program that is stored in a nonvolatile memory and that the CPU executes, and that outputs a notification signal that indicates the verification result. The image processing apparatus comprises a power source control unit for controlling a power source of the image processing apparatus, and the power source control unit, when the image processing apparatus is activated, supplies power to the microcomputer, and when a notification signal outputted from the microcomputer is received, holds the verification result that the notification signal indicates and shuts off the supply of power to the microcomputer.

The present invention provides an information processing apparatus capable of mounting an optional hardware. The information processing apparatus comprises a processor, an image processing circuit and a socket to which the optional hardware is to be mounted, wherein the optional hardware being connected to the socket communicates with the image processing circuit. The processor transmits a predetermined packet to the optional hardware mounted to the socket, receive a response packet to the predetermined packet from the image processing circuit, determines whether or not the received response packet is an expected response packet, and controls supplying power to the optional hardware in accordance with a determination result of the received response packet.

An image communication apparatus, to communicate with a telephone set, includes a first control unit, a detection unit, a generation unit, and a second control unit. The first control unit controls the image communication apparatus. The detection unit detects an occurrence of a telephone set off-hook state. The generation unit generates a pseudo-CI signal for ringing the telephone set or an intermittent off-hook voltage to be supplied to the detection unit. The telephone set is connected to a communication line or the generation unit. The second control unit controls the generation unit. Where the telephone set is controlled to wait for a call without being allowed to ring in a power-saving state, the telephone set is connected to the generation unit and placed in the power-saving state. In the power-saving state, the second control unit controls the generation unit to supply a generated intermittent off-hook voltage to the detection unit.

The facsimile apparatus of the present invention, and the method of controlling the same, switches a connection between a telephone device and a telephone line between connected and cut off, has a power supply for supplying power to the telephone device, and, in a state where the telephone device and the telephone line are connected and supply of power from the power supply to the telephone device is stopped, in a case that an off-hook of the telephone device is detected by a detection unit for detecting an off-hook and an on-hook of the telephone device, controls to start supply of power from the power supply to the telephone device.

An image processing apparatus comprises a CPU for controlling the image processing apparatus and a microcomputer that verifies alteration of a program that is stored in a nonvolatile memory and that the CPU executes, and that outputs a notification signal that indicates the verification result. The image processing apparatus comprises a power source control unit for controlling a power source of the image processing apparatus, and the power source control unit, when the image processing apparatus is activated, supplies power to the microcomputer, and when a notification signal outputted from the microcomputer is received, holds the verification result that the notification signal indicates and shuts off the supply of power to the microcomputer.

An image forming apparatus includes: a power supply controller; a network part that performs network communication with a terminal on which operation for an own apparatus is performed; a screen data generator that generates screen data; a screen data transmitter that transmits the screen data to the terminal; and a screen data transmission controller that performs determination as to whether to perform preliminary transmission of the screen data, and when it is determined that preliminary transmission is necessary, the screen data transmission controller notifies the terminal that preliminary transmission of the screen data is to be performed, instructs the screen data generator to generate the screen data to be transmitted in preliminary transmission, instructs the screen data transmitter to perform preliminary transmission of the generated screen data, and causes the power supply controller to shift a power supply state to a power saving state.

The facsimile apparatus of the present invention, and the method of controlling the same, switches a connection between a telephone device and a telephone line between connected and cut off, has a power supply for supplying power to the telephone device, and, in a state where the telephone device and the telephone line are connected and supply of power from the power supply to the telephone device is stopped, in a case that an off-hook of the telephone device is detected by a detection unit for detecting an off-hook and an on-hook of the telephone device, controls to start supply of power from the power supply to the telephone device.

An image communication apparatus, to communicate with a telephone set, includes a first control unit, a detection unit, a generation unit, and a second control unit. The first control unit controls the image communication apparatus. The detection unit detects an occurrence of a telephone set off-hook state. The generation unit generates a pseudo-CI signal for ringing the telephone set or an intermittent off-hook voltage to be supplied to the detection unit. The telephone set is connected to a communication line or the generation unit. The second control unit controls the generation unit. Where the telephone set is controlled to wait for a call without being allowed to ring in a power-saving state, the telephone set is connected to the generation unit and placed in the power-saving state. In the power-saving state, the second control unit controls the generation unit to supply a generated intermittent off-hook voltage to the detection unit.

A facsimile apparatus includes a photo relay that switches a state of connection between an externally connected telephone set and a telephone line; a rectifying unit that rectifies a signal at a time when an incoming call from the telephone line arrives into DC power; a holding unit that holds the DC power obtained by rectification by the rectifying unit; and a switching controller that performs control in such a manner that supply of the DC power held in the holding unit to the photo relay causes the externally connected telephone set to be connected to the telephone line.