| Patent application number | Description | Published |
|---|
| 20090079630 | Time Adjustment Device, Timepiece with a Time Adjustment Device, and a Time Adjustment Method - A time adjustment device has a reception unit that receives a satellite signal transmitted from a positioning information satellite, a time information generating unit that generates internal time information, and a time information adjustment unit that adjusts the internal time information. The satellite signal contains satellite time information that is kept by the positioning information satellite. The reception unit includes a signal level acquisition unit that searches for positioning information satellites and acquires the signal level of the satellite signal transmitted from each positioning information satellite, a reception satellite selection unit that selects a positioning information satellite based on the acquired signal level, and a satellite time information acquisition unit that receives the satellite signal transmitted from the positioning information satellite selected by the reception satellite selection unit, and acquires the satellite time information contained in the satellite signal. The time information adjustment unit adjusts the internal time information based on the acquired satellite time information when the satellite time information acquisition unit has acquired the satellite time information. | 03-26-2009 |
| 20090129206 | Time Adjustment Device, Timepiece with a Time Adjustment Device, and a Time Adjustment Method - A time adjustment device having a reception unit that receives satellite signals transmitted from positioning information satellites; a time information generating unit that generates internal time information; a time information adjustment component that corrects the internal time information; and a reception controller that controls operation of the reception unit; wherein the satellite signal contains satellite time information that is kept by the positioning information satellite; the reception unit can select a first reception mode for receiving first information including the hour, minute, and second data in the satellite signal, and a second reception mode for receiving second information including the hour, minute, and second data, week information for the current year, month, and day, and satellite health information in the satellite signal; the time information adjustment component includes a time adjustment recording component that records whether or not the time was adjusted using the second information received in the second reception mode after the internal time information was initialized, a first time information adjustment component that controls the reception unit by way of the reception controller in the first reception mode to receive the first information, and sets the hour, minute, and second values of the internal time information based on the received first information, and a second time information adjustment component that controls the reception unit in the second reception mode to receive the second information, and sets the year, month, day, hour, minute, and second values of the internal time information using the received second information; the first time information adjustment component operates when it is recorded in the time adjustment recording component that the time was adjusted using the second information; and the second time information adjustment component operates when it is not recorded in the time adjustment recording component that the time was adjusted using the second information. | 05-21-2009 |
| 20090189809 | Satellite Signal Reception Device And Control Method For A Satellite Signal Reception Device - A satellite signal reception device has a reception unit that receives a satellite signal transmitted from a positioning information satellite, a reception state display device for displaying the satellite signal reception state, a reception state evaluation unit that determines the reception condition of the satellite signal received by the reception unit, and a display controller that controls the reception state display device to display the reception condition determined by the reception state evaluation unit. The reception state evaluation unit determining the level of the reception condition based on the number of positioning information satellites from which satellite signals are received and the signal level of each received signal, and the display controller displaying the reception level output by the reception state evaluation unit on the reception state display device. | 07-30-2009 |
| 20100097896 | Electronic Timepiece - An electronic timepiece that uses electrical power produced by photovoltaic generation as a power source and has a function for receiving microwave signals, including a dial for displaying time information on a front surface thereof, a solar cell that receives light passing through the dial and produces electrical power by photovoltaic generation, and an antenna that is disposed so that at least part of the signal receiving surface opposes at least a part of the back surface of the dial, and receives microwave signals through the dial. The solar cell is not disposed in space between the back side of the dial and the signal receiving surface of the antenna. | 04-22-2010 |
| 20100214165 | Satellite Signal Reception Device, and Control Method for a Satellite Signal Reception Device - A satellite signal reception device has a reception unit that receives a satellite signal transmitted from a positioning information satellite, and a reception control component that controls the reception unit to execute a reception process. The reception control component includes a satellite signal search component that searches for the satellite signal by means of the reception unit, a reception mode selection component that selects either a time mode or a positioning mode according to the number of satellites from which a satellite signal was captured by the satellite signal search component, a positioning process component that executes a positioning process of receiving the satellite signals and acquiring positioning information by means of the reception unit when the reception mode selection component selects the positioning mode, and a timekeeping process component that executes a timekeeping process of receiving the satellite signals and acquiring time information by means of the reception unit when the reception mode selection component selects the time mode. | 08-26-2010 |
| 20110063952 | Electronic Timepiece And Time Adjustment Method For An Electronic Timepiece - An electronic timepiece wherein, when the week number indicates an n-th cycle from a specific reference date as a cycle number, a date determination information setting unit sets the date determination information using a partial unit that is a different number in each date corresponding to the same week number in a plurality of consecutive cycle numbers, and the date determination unit acquires the date in each cycle number identified by the week number and time of week based on week number cycle information correlating week numbers, cycle numbers, and dates, and determines in which of these dates the partial unit matches the date determination information. | 03-17-2011 |
| 20110205678 | Protection Circuit And Electronic Device - A protection circuit that is used with a power supply that produces charging power, and a storage battery for which normal operation is conditional upon a terminal voltage being less than or equal to a maximum voltage, including: a first switch disposed to a first path that electrically connects the storage battery and the power supply; a second path that electrically connects the storage battery and a load; a voltage detection circuit that detects a terminal voltage of the storage battery; an over-charge detection circuit that monitors the storage battery terminal voltage and controls the first switch to turn off when the terminal voltage is detected to exceed the maximum voltage; and a control circuit that controls the monitoring operation interval of the over-charge detection circuit according to the terminal voltage of the storage battery detected by the voltage detection circuit. | 08-25-2011 |
| 20120188123 | Satellite Signal Receiving Device, Method of Controlling Satellite Signal Receiving Device, and Electronic Device - A solar cell, a charge state detection circuit and a voltage detection circuit as a generating state detection circuit that detects the generating state of the solar cell, and a control circuit are provided. The control circuit operates a GPS receiver circuit when a detection value detected by the voltage detection circuit is greater than or equal to a preset threshold value, and resets the threshold value if satellite signal reception by the GPS receiver circuit fails, or if the detection value detected by the voltage detection circuit remains less than the threshold value for a preset generating state detection time or longer. | 07-26-2012 |
| 20120188854 | Time Adjustment Device, Timekeeping Device With A Time Adjustment Device, And Time Adjustment Method - A time adjustment device can acquire time information in a short time, reduce power consumption, and display the correct time. A GPS wristwatch has a reception unit that receives satellite signals; a time information generating unit that generates internal time information; a reception control unit that controls the reception unit; and a time information adjustment unit that adjusts the internal time information. The time information adjustment unit has a first information time adjustment means that receives first information containing year, month, day, hour, minute, second, and satellite health information, and adjusts the internal time information; a second information time adjustment means that receives second information including leap second information, and adjusts the internal time information; a third information time adjustment means that receives third information of hour, minute, second information, and adjusts the internal time information. | 07-26-2012 |
