Abstract: An image forming apparatus includes a display, a detector, and a controller. The display communicates a setting screen for setting a function of the image forming apparatus. The detector detects an operation of a user that the user executes on the setting screen. The controller is configured to communicate guidance regarding the setting screen based on the operation detected by the detector. For example, such guidance may be communicated when the number of operation times of the operation executed by the user on the setting screen exceeds a first threshold and the number of execution times of the function executed by the user previously is less than a second threshold.

Abstract: An image processing device includes a reader and a controller. The reader acquires a document image formed on a sheet. The controller acquires an area image in a designated area designated in the document image acquired by the reader, performs a character recognition process and a code recognition process on the area image, and in response to the character recognition process not recognizing a character, employs a code recognition result by a code recognition process performed on the area image as a recognition result of the area image.

Abstract: A printing system according to an embodiment includes: plural printers connected to a network; a user terminal connected to the network; and a print server which receives and saves a print job from the user terminal, and which determines plural printer candidates suitable for executing the print job from among the plural printers connected to the network, monitors an operation mode of the plural printer candidates that are determined, and when plural printer candidates include a printer in a sleep mode, shifts the printer from the sleep mode to an normal operating mode via the network.

Abstract: A printing system according to an embodiment includes: plural printers connected to a network; a user terminal connected to the network; and a print server which receives and saves a print job from the user terminal, and which determines plural printer candidates suitable for executing the print job from among the plural printers connected to the network, monitors an operation mode of the plural printer candidates that are determined, and when plural printer candidates include a printer in a sleep mode, shifts the printer from the sleep mode to an normal operating mode via the network.

Abstract: A server includes a storage unit configured to store first data and second data, an interface through which the first and second data stored in the storage unit are to be transmitted to an image forming device, and a control unit. The control unit is configured to start transmission of the first data from the storage unit to the image forming device through the interface, to interrupt the transmission of the first data in response to a request of transmission of the second data to the image forming device, and to start transmission of the second data from the storage unit to the image forming device through the interface after the transmission of the first data is interrupted.

Abstract: An image forming apparatus comprises a display unit and an image forming unit. The display unit displays a list of print jobs. The image forming unit forms an image based on the print job registered last, if a first printing instruction is given without selecting a print job from the list of print jobs displayed on the display unit.

Abstract: A printing system according to an embodiment includes: plural printers connected to a network; a user terminal connected to the network; and a print server which receives and saves a print job from the user terminal, and which determines plural printer candidates suitable for executing the print job from among the plural printers connected to the network, monitors an operation mode of the plural printer candidates that are determined, and when plural printer candidates include a printer in a sleep mode, shifts the printer from the sleep mode to an normal operating mode via the network.

Abstract: A nonlinearity compensation circuit is disclosed which includes an inverse hyperbolic function generation circuit for converting differential currents corresponding to input signals in+ and in− into differential voltages which increase in proportion to an inverse hyperbolic function, an offset provision circuit for providing an offset corresponding to control signals c+ and c− to the differential voltages outputted from the inverse hyperbolic function generation circuit and a hyperbolic function generation circuit for converting the differential voltages to which the offset has been provided by the offset provision circuit into signals which increase in proportion to a hyperbolic function and outputting the resulting signals as output signals out+ and out−. Consequently, compensation for the nonlinearity such as second order distortion can be performed for the read signal from a recording medium.

Abstract: A nonlinearity compensation circuit is disclosed which includes an inverse hyperbolic function generation circuit for converting differential currents corresponding to input signals in+ and in− into differential voltages which increase in proportion to an inverse hyperbolic function, an offset provision circuit for providing an offset corresponding to control signals c+ and c− to the differential voltages outputted from the inverse hyperbolic function generation circuit and a hyperbolic function generation circuit for converting the differential voltages to which the offset has been provided by the offset provision circuit into signals which increase in proportion to a hyperbolic function and outputting the resulting signals as output signals out+ and out−. Consequently, compensation for the nonlinearity such as second order distortion can be performed for the read signal from a recording medium.

Abstract: An automatic gain control circuit having a variable gain amplifier circuit, a signal level detecting circuit connected to the variable gain amplifier circuit for generating a detect signal the level of which changes in response to a signal level of an output signal of the variable gain amplifier circuit, and a gain control circuit for controlling the gain of the variable gain amplifier circuit in accordance with the signal level of the detect signal, and the gain control circuit having a differential amplifier circuit having first and second input terminals, the first and second input terminals being connected to the signal level detecting circuit for receiving the detect signal, a first reference voltage source connected to the first input terminal of the differential amplifier so that a first predetermined voltage is provided instead of the signal level of the detect signal in response to the signal level of the detect signal and a second reference voltage source connected to the second input terminal of th

Abstract: Apparatus for recording audio and video signals comprises a signal processor for producing a processed video signal and a frequency-modulated audio signal. The frequency-modulated audio signal is obtained by frequency-modulating a carrier in response to an input audio signal. A magnetic recorder records both the frequency-modulated audio signal and the processed video signal in oblique tracks arranged successively on a magnetic tape. The recording is done selectively in a first recording mode wherein the oblique tracks are formed with spaces between successive tracks or a second recording mode wherein successive tracks are contiguous. A modulation control controls the frequency-modulation carried out by the signal processor to produce the frequency-modulated audio signal with a first modulation index in the first recording mode and with a second modulation index greater than the first modulation index in the second recording mode.