Seiko Epson Corporation

Toshihiko Katayama

Kenji Sakuda

Makoto Oyanagi

Hideki Morozumi

Yoichi Wakai

Kazunori Suenaga

Masakatsu Endo

Noboru Asauchi

Masahiko Yoshida

Noboru Tamura

Yuichi Nishihara

Takakazu Fukano

Hideyuki Narusawa

Junya Yada

Tomoyoshi Kakegawa

Yasutaka Shibagaki

Tomohiro Takahashi

Shunsaku Miyazawa

Koichi Ono

An abnormality detection circuit includes a first voltage detection circuit to which a voltage is applied from an AC power source when a first relay contact is closed and a second voltage detection circuit to which a voltage is applied from the AC power source when a second relay contact is closed. One end of the first voltage detection circuit is connected to the AC power source via the second wiring line while passing through no other switch. One end of the second voltage detection circuit is connected to the AC power source via the first wiring line while passing through no other switch. Abnormalities of the first and second relay contacts are detected by comparing the voltage applied to a comparative voltage detection circuit with each of the voltages applied to the first and second voltage detection circuits, respectively.

Abnormality detection circuit and abnormality detection method

An image processing method is performed by an image supply device storing image data and an image output device performing image processing with respect to the image data, which are connected via a communication path through which the image data is communicated. A control information item including a script for image processing, which is described by a markup language, is communicated between the image supply device and the image output device. The image data is transmitted to the image output device, based on the script.

Image processing method and image processing system using the same

An electronic apparatus includes: a timer member that clocks time on the basis of the power supplied from a power source. A power supply member supplies the power to an electric motor of the electronic apparatus and to the timer member from the power source and interrupts the power supply thereto. A heat storage calculating member calculates heat storage of the electric motor and calculates heat storage of the electric motor after stop of the drive on the basis of the time clocked by the timer member. A controller controls the electric motor and controls the power supply member by initiating power-on and power-off operations. This is performed so as to, maintain the power supply to the timer member and the heat storage calculating member during a predetermined time, even after the power-off operation of the operation member.

Electronic apparatus and method of controlling electric motor mounted in electronic apparatus

A recording apparatus, and so forth, capable of outputting at high speed is provided. Second recording data that are stored in a memory based on data obtained by a data obtaining section are transferred to a data generator via a second transfer path, and based on the second recording data that have been transferred, the data generator generates first recording data for performing recording on a medium.

Recording apparatus

It is generated a control information item including a script for the image processing which is described by a markup language. The control information item is communicated between an image supply device and an image output device connected via a communication path. A control protocol for communicating the control information item is interpreted by a first entity which executes processing for a first hierarchic layer of a communication protocol. A management protocol for managing an image data file including the image data is interpreted by a second entity which executes processing for a second hierarchic layer of the communication protocol which is lower than the first hierarchic layer. A physical layer of the communication path is controlled by a third entity which executes processing for a third hierarchic layer of the communication protocol which is lower than the second hierarchic layer. A command in the control information item is translated between the control protocol and the management protocol.

At one of an image supply device storing image data and an image output device performing image processing with respect to the image data which are connected via a communication path through which the image data is communicated, one of a text command described by a markup language and a binary command described by a binary is selected as a command including a control information item for the image processing. From one of the image supply device and the image output device to the other, the selected one of the text command and the binary command is transmitted. At the other one of the image supply device and the image output device, it is performed processing specified by the control information included in the selected one of the text command and the binary command.

The present invention provides a technique that prevents a shift of a driving waveform due to accumulation of errors in a process of generating the driving waveform to drive driving elements on a print head. The technique of the present invention successively sums up a plurality of gradient data at a preset calculation period to give a result of summation and carries out digital-to-analog (D-A) conversion with regard to only specific upper columns in the result of summation in synchronism with the preset calculation period, so as to generate a driving waveform. Each gradient data represents a local gradient of the driving waveform and is stored in a memory. In the process of generating the driving waveform, the technique of the present invention corrects the result of summation to a preset value under a predetermined condition. One preferable embodiment clears specific lower bits in the result of summation in synchronism with a floor signal. Another preferable embodiment forcibly corrects the result of summation to an upper limit value or a lower limit value of a preset range when the result of summation exceeds the preset range. Such correction effectively cancels the potential effects of cumulative error on the driving waveform.

Growing community of inventors

Nagano, Japan

Toshihiko Katayama