Seiko Instruments Inc

Takayuki Nomura

Hiroshi Shimizu

Tomohiro Ihashi

Kazuhiro Koyama

Tamotsu Maesawa

Provided is a communication system that includes an electronic timepiece and a communication apparatus, in which, when the electronic-timepiece communication unit demands a communication connection to the communication apparatus, the communication-apparatus control unit inquires whether or not the electronic timepiece is included in the connection approval list that is stored in the communication-apparatus storage unit, in which, in a case where the electronic timepiece is included in the connection approval list, the communication-apparatus communication unit establishes a communication connection to the electronic timepiece and performs data communication through which at least clock time data is sent to the electronic timepiece, and in which, in a case where the electronic timepiece is not included in the connection approval list, the communication-apparatus communication unit does not establish the communication connection to the electronic timepiece.

Communication system, communication method, electronic timepiece, and communication apparatus

There is provided a timepiece which includes a movable pointer, an acquisition unit which acquires information on a movable range corresponding to at least a portion of a movable range of the movable pointer and acquires information indicating a target position to which the pointer is to be moved, a control unit which compares the target position with the movable range and determines a movement direction of the pointer based on the comparison result, and a drive unit which drives the pointer in the determined movement direction.

Timepiece, timepiece system, and method of controlling timepiece

An electronic timepiece includes a display unit, an altitude measurement unit that measures an altitude, a RAM that stores an ascent integrated altitude plan value which is a plan value of an ascent integrated altitude value, and a CPU that calculates the ascent integrated altitude value obtained by integrating an altitude variation amount during an ascent, based on an altitude measured by the altitude measurement unit, that calculates an ascent achievement ratio which is an achievement ratio of the ascent integrated altitude value with respect to the ascent integrated altitude plan value, and that causes the display unit to display the ascent achievement ratio.

Altimeter, electronic timepiece, and program

To provide a thermal printer apparatus and a printing method that can be adapted to different types of thermal paper having different thermal conductivity characteristics, a dot data memorystores dot data for each line in synchronization with line sequential printing and delivers an energizing pulse selectively to a line thermal headvia a driving circuit. A multipliercounts the number of dots to be printed for each line and multiplies a result of the counting by a heated thermal paper coefficient Pcorresponding to a thermal conductivity characteristic of a thermal paper. A heat accumulation countercounts results of the multiplying in an accumulative manner. A multipliermultiplies a count value in the heat accumulation counterby a heat radiation coefficient and a heat radiation thermal paper coefficient Pcorresponding to the thermal conductivity characteristic of the thermal paperrepeatedly at a predetermined period, so as to correct and update the count value in the heat accumulation counter. An arithmetic unitcalculates an energizing pulse width based on the corrected and updated count value in the heat accumulation counterin synchronization with line sequential printing, and controls the driving circuitbased on a result of the calculating.

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Chiba, Japan

Takayuki Nomura