Seiko Epson Corporation

Eiji Satake

Kenji Kimura

Power required for a printing operation can be supplied while supplying power to a connected external device. A printerconnects to a smart device, and has: a power circuit; a USB interfacecapable of supplying power to the smart device while communicating by wire with the smart device; a print unitthat prints; and a controllerthat controls the print unitto print in a power conservation mode when information instructing printing by the print unitis received by the interfacefrom the smart devicewhile supplying power from the power circuitto the smart device

Printing device, and control method of a printing device

An electronic device controller includes an image sensor controller that controls an image sensor having an effective pixel region and a dummy pixel region, and a servo controller that performs servo control on a drive device that drives a carriage on which the image sensor is mounted. The servo controller performs the servo control based on servo control information (for speed control, initial position detection) read by some or all of the dummy pixel region of the image sensor. Alternatively, the servo control may be performed based on servo control information read by one or more separate sensors mounted on the carriage with the image sensor. Moreover, speed servo control may be performed according to speed control ranges based on servo control information for each speed range.

Electronic device controller, and method for controlling electronic device

An electronic device includes a carriage on which an image sensor is mounted, a motor that drives the carriage, and servo-control-containing printed matter provided in one or more detection areas of the image sensor or one or more independently provided optical sensors. The servo control information is used for speed control and initial position detection of the carriage. A servo controller performs the servo control on the motor via a motor driver based on the read servo control information. The printed matter is provided on a rear or underside surface of a support structure in areas irradiated by a light source for the image sensor. Printed matter for speed control may be provided in one area and printed matter for initial position detection in another. Servo control information on the printed matter may be read using a dummy pixel region of the image sensor.

Electronic device

An image sensor controller and methods achieve faster image reading speeds by controlling the frequency of image sensor transfer clocks &#x3c6;in accordance with the particular output period. Such an image sensor controller includes a drive controller that supplies to a transfer section of the image sensor transfer clocks &#x3c6;whose clock frequency during dummy pixel output periods is faster than it is during an effective pixel output period, or whose clock frequency during non-reading pixel output periods is faster than it is during a reading pixel output period. A pattern selector selects among clock patterns in a table for setting &#x3c6;according to the output periods of the image sensor. Even when the clock frequency ofchanges, a transfer clock ADCK signal can be supplied at a constant clock frequency to an A/D converter.

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Sapporo, Japan

Eiji Satake