Abstract: The present invention provides an information processing apparatus including: a first control section that, when execution of printing at a printing device connected via a communications section is instructed, performs control to display at a display section a print settings screen for making settings relating to the printing; a calculation section that calculates an estimated value of power consumption that the printing device will consume if the printing is executed on the basis of the settings relating to printing; and a second control section that, when a pre-specified operation is performed at the print settings screen, performs control to display the estimated value of power consumption and display at the display section an energy saving settings screen for making, of the settings relating to printing, settings relating to energy saving.

Abstract: The present invention provides an information processing apparatus including: a first control section that, when execution of printing at a printing device connected via a communications section is instructed, performs control to display at a display section a print settings screen for making settings relating to the printing; a calculation section that calculates an estimated value of power consumption that the printing device will consume if the printing is executed on the basis of the settings relating to printing; and a second control section that, when a pre-specified operation is performed at the print settings screen, performs control to display the estimated value of power consumption and display at the display section an energy saving settings screen for making, of the settings relating to printing, settings relating to energy saving.

Abstract: While a general-purpose interface circuit and another general-purpose interface circuit are provided so as to transmit/receive data between a host appliance and a device appliance, when the general-purpose interface of the device appliance happens to hang up, a control section transmits a reset signal via a dedicated interface circuit. When a dedicated interface circuit provided on the side of the device appliance receives this reset signal and then outputs this received reset signal to the general-purpose interface circuit, the general-purpose interface circuit is reinitiated.

Abstract: A USB device for performing communications with a second device through a USB interface while supplying electric power to the second device through a power-source supplying line in the USB interface. The USB device includes a communication unit for communicating with the second device, a power source capable of outputting electric power of a voltage being different from a standard power voltage prescribed in the standards of the USB interface. The power source supplies the electric power to the second device through the power-source supplying line. The second device includes a low load unit and a high load unit The power source supplies the electric power having a power voltage higher than the standard power voltage to the high load unit through the power-source supplying line.

Abstract: A USB device for supplying current to a device connected thereto through a USB interface. In this USB device, current values requested by the devices are preset, as detecting current values, in detector registers of current detecting parts. The current detecting parts constantly monitor current values of electric powers supplied to the devices. Each current detecting part compares a related detecting current value with a related supplied current value. If the supplied current value exceeds the detecting current value, the current detecting part informs a current detection control part of abnormality occurrence. The current detection control part sets a bit in a no-good status register, which corresponds to the current detecting part having informed the abnormality occurrence, and interrupts a CPU. In turn, the CPU refers to the no-good status register and specifies the failure device, and interrupts a current supplying path connecting to the failure device.

Abstract: In a CPU, a FET is turned off and power is not supplied to a power supply element of a transceiver for a period of time until predetermined initialization processing, which is implemented in a peripheral device when power is supplied via a cable from a host PC, has been concluded (i.e., a period of time until it becomes possible for the peripheral device to initiate data communication with the host PC). Thus, even if the peripheral device and the host PC are physically connected by a cable, data signals transmitted along signal lines are not relayed by the transceiver to a logic controller, whereby it in effect becomes possible to set the peripheral device in a pseudo-non-connected state with respect to the host PC.

Abstract: A USB device for supplying current to a device connected thereto through a USB interface. In this USB device, current values requested by the devices are preset, as detecting current values, in detector registers of current detecting parts. The current detecting parts constantly monitor current values of electric powers supplied to the devices. Each current detecting part compares a related detecting current value with a related supplied current value. If the supplied current value exceeds the detecting current value, the current detecting part informs a current detection control part of abnormality occurrence. The current detection control part sets a bit in a no-good status register, which corresponds to the current detecting part having informed the abnormality occurrence, and interrupts a CPU. In turn, the CPU refers to the no-good status register and specifies the failure device, and interrupts a current supplying path connecting to the failure device.

Abstract: A USB device for performing communications with a second device through a USB interface while supplying electric power to the second device through a power-source supplying line in the USB interface. The USB device includes a communication unit for communicating with the second device, a power source capable of outputting electric power of a voltage being different from a standard power voltage prescribed in the standards of the USB interface. The power source supplies the electric power to the second device through the power-source supplying line. The second device includes a low load unit and a high load unit The power source supplies the electric power having a power voltage higher than the standard power voltage to the high load unit through the power-source supplying line.

Abstract: In a CPU, a FET is turned off and power is not supplied to a power supply element of a transceiver for a period of time until predetermined initialization processing, which is implemented in a peripheral device when power is supplied via a cable from a host PC, has been concluded (i.e., a period of time until it becomes possible for the peripheral device to initiate data communication with the host PC). Thus, even if the peripheral device and the host PC are physically connected by a cable, data signals transmitted along signal lines are not relayed by the transceiver to a logic controller, whereby it in effect becomes possible to set the peripheral device in a pseudo-non-connected state with respect to the host PC.

Abstract: While a general-purpose interface circuit and another general-purpose interface circuit are provided so as to transmit/receive data between a host appliance and a device appliance, when the general-purpose interface of the device appliance happens to hang up, a control section transmits a reset signal via a dedicated interface circuit. When a dedicated interface circuit provided on the side of the device appliance receives this reset signal and then outputs this received reset signal to the general-purpose interface circuit, the general-purpose interface circuit is reinitiated.

Abstract: A multiple value image input device receives image data expressed in multiple chromatic gradation levels from an outside source and converts the data into digital form. The multiple value image input device corrects the image data by dividing the data into units of data, and determining the maximum and minimum gradation levels within each unit. The data within the unit is assigned new gradation levels utilizing the full range of available gradation levels. The minimum gradation level within the unit is assigned a new relatively low gradation level, and the maximum gradation level within the unit data is assigned a new relatively high gradation level. The gradations levels between the maximum and minimum values within the unit of data are assigned new interpolated gradation levels based upon the relatively low and relatively high gradation levels.