Patent application number | Description | Published |
20090016167 | Time Adjustment Device, Timekeeping Device with a Time Adjustment Device, and a Time Adjustment Method - A time adjustment device has a reception unit that receives satellite signals transmitted from a positioning information satellite; a satellite signal processing unit that processes the satellite signal received by the reception unit and acquires at least satellite time information; a timekeeping unit that keeps time internally; and a time information adjustment unit that adjusts the internal time based on the satellite time information; wherein the reception unit and the satellite signal processing unit operate alternatively. | 01-15-2009 |
20090034371 | Time Adjustment Device, Timekeeping Device with a Time Adjustment Device, and a Time Adjustment Method - A time adjustment device having a satellite signal reception unit that receives satellite signals containing satellite time information transmitted from a positioning information satellite; a time information generating unit that generates time information; and a time information adjustment unit that adjusts the time information based on the satellite time information received by the satellite signal reception unit. The satellite signal reception unit includes a positioning information satellite selection unit that selects the positioning information satellite from which the satellite time information is received; and the positioning information satellite selection unit selects a positioning information satellite based on variation in the transmission frequency of the satellite signal transmitted from the positioning information satellite. | 02-05-2009 |
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 |
20090135674 | Satellite Signal Reception Device, Timekeeping Device, and Satellite Signal Reception Method for a Satellite Signal Reception Device - A satellite signal reception device having a reception unit that captures a positioning information satellite and receives a satellite signal transmitted from the captured positioning information satellite; a data acquisition unit that can acquire time information and positioning information based on the satellite signal received by the reception unit; and a reception mode control unit that controls the reception mode of the reception unit to at least one of a time information reception mode and positioning information reception mode. The reception unit includes a correlation unit that determines a correlation between a code used for capturing the satellite signal and the received satellite signal. The data acquisition unit includes an operating unit that decodes the received data. The reception mode control unit includes a clock control unit that separately controls the operating clock of the correlation unit and the process clock of the operating unit according to the reception mode. | 05-28-2009 |
20090160705 | TimeKeeping Device and Satellite Signal Reception Method for a Timekeeping Device - A timekeeping device has a reception unit that captures a positioning information satellite and receives satellite signals transmitted from the captured positioning information satellite, a time information generating unit that generates time information based on the satellite signal received by the reception unit, a time display unit that displays time information, and a reception control unit that controls the reception unit. The reception control unit includes a satellite capture control unit that controls the reception unit to run the positioning information satellite capture process, a signal condition detection unit that detects the signal condition of the captured positioning information satellite, a decoding control unit that controls the reception unit to apply a decoding process to the satellite signal transmitted from the captured positioning information satellite, and a reception channel setting unit that sets the reception unit to a single satellite mode or a multi-channel mode based on the signal condition detected by the signal condition detection unit, and the reception unit sets the number of positioning information satellites that can be simultaneously captured and decoded to 1 when set to the single satellite mode, and sets the number of positioning information satellites that can be simultaneously captured and decoded to more than 1 when set to the multi-channel mode. | 06-25-2009 |
20090315763 | Satellite Signal Reception Device, Timekeeping Device with a Satellite Signal Reception Device, and Satellite Signal Reception Method - A satellite signal reception device has a reception unit that receives satellite signals transmitted from a positioning information satellite, a timekeeping unit that keeps time internally, a power supply unit that supplies power at least to the reception unit, a correlation process unit that is disposed in the reception unit and has a plurality of correlators for determining a correlation with the satellite signal when receiving satellite signals, and a correlation process count determination unit that determines how many correlators to use when the reception unit receives the satellite. | 12-24-2009 |
20100054087 | Electronic Timepiece - An electronic timepiece having a function for receiving satellite signals transmitted from positioning information satellites, including a satellite signal reception unit that receives the satellite signals, a satellite capturing unit that executes a process of capturing the positioning information satellites within a capture time based on the satellite signals received by the satellite signal reception unit, a time adjustment information generating unit that acquires satellite information from the satellite signal sent from the positioning information satellite captured by the satellite capturing unit, and generates time adjustment information based on the satellite information, a time information adjustment unit that adjusts internal time information based on the time adjustment information, a time information display unit that displays the internal time information, and a time limit setting unit that variably sets a time limit for the time adjustment information generating unit to generate the time adjustment information based on the number of positioning information satellites captured by the satellite capturing unit and a reception level of the satellite signals transmitted from the positioning information satellites. | 03-04-2010 |
20110044137 | Electronic Timepiece - An electronic timepiece has a reception unit that executes a search process to search for satellite signals that can be captured from among satellite signals transmitted from a plurality of positioning information satellites, and from among the satellite signals captured by the search process receives a satellite signal with signal strength greater than or equal to a specific signal reception threshold value; an information acquisition unit that acquires specific information including at least time information based on a satellite signal received by the reception unit; and a display that displays acquired information. A threshold value changing unit lowers the signal reception threshold value according to a search count, which is the number of times the search process has been applied to the satellite signals of all positioning information satellites. | 02-24-2011 |
20120002511 | Electronic Timepiece - An electronic timepiece that receives RF signals and displays information suppresses loss of antenna sensitivity to a sufficiently low level while using a metal case without sacrificing display functions. An electronic timepiece | 01-05-2012 |
20120002512 | Electronic Timepiece - An electronic timepiece that receives signals and displays information can be driven using solar power while suppressing antenna sensitivity loss to a sufficiently low level. An electronic timepiece | 01-05-2012 |
20120170425 | Timekeeping Device and Satellite Signal Reception Method for a Timekeeping Device - A timekeeping device has a reception unit that receives a satellite signal transmitted from a positioning information satellite, a time information generating unit that generates time information based on the received satellite signal, a time display unit that displays the time information, and a reception control unit that controls the reception unit. The reception control unit includes a signal condition detection unit that detects a signal condition of the received satellite signal, and a reception setting unit that sets the reception unit to a single satellite mode or a multi-satellite mode based on the detected signal condition. | 07-05-2012 |
20120176868 | Electronic Timepiece - An electronic timepiece that receives satellite signals transmitted from positioning information satellites includes: a satellite signal reception unit that receives satellite signal(s); a satellite capturing unit that executes a process of capturing at least one of the satellites within a capture time based on the satellite signal(s) received by the reception unit; a time adjustment information generating unit that acquires satellite information from the satellite signal(s) transmitted from the captured satellite(s), and generates time adjustment information based on the satellite information; a time information adjustment unit that adjusts internal time information based on the time adjustment information; and a time information display unit that displays the internal time information. The capture time is from the start of reception of the satellite signal(s) to capture of at least one satellite, and if no satellite is captured within this time period, the satellite capturing unit stops reception of the satellite signal(s). | 07-12-2012 |
20130051187 | Electronic Timepiece - An electronic timepiece can improve the frequency of satellite signal reception and reduce power consumption. Such timepiece, e.g., a wristwatch has a GPS device that executes a reception process that locks onto a GPS satellite and receives satellite signals; a reception control unit that controls the reception process; and a solar panel that detects illuminance. The reception control unit includes an illuminance-based reception control unit that runs a reception process based on the detected illuminance, and a scheduled reception control unit that runs a reception process when a preset scheduled time is reached. The illuminance-based reception control unit stops reception when a satellite is not locked onto within a first locking time, and the scheduled reception control unit stops reception when a satellite is not locked onto in a second locking time that is shorter than the first locking time. | 02-28-2013 |
20130051188 | Electronic Timepiece - An electronic timepiece can determine the reception state in detail, and can display the reception state with high precision. A GPS wristwatch 1 has a reception unit that receives a satellite signal transmitted from a positioning information satellite; a reception level calculating unit 47 that calculates a reception level from the signal strength of the satellite signal; and a reception level display unit 48 that displays the reception level calculated by the reception level calculating unit 47. The reception level calculating unit 47 selects a specific number of satellite signals received from the positioning information satellites in order of greatest signal strength, and calculates the reception level from the signal strengths of the selected satellite signals. | 02-28-2013 |
20130052977 | Satellite Signal Receiving Device and Electronic Device - A satellite signal reception device can reliably execute a satellite signal reception process. The satellite signal reception device has a reception time setting unit | 02-28-2013 |
20140016441 | Electronic Timepiece - An electronic timepiece that receives RF signals and displays information suppresses loss of antenna sensitivity to a sufficiently low level without sacrificing display functions. Such an electronic timepiece has a dial on the face of which time is displayed, and an antenna in the shape of a polygon disposed on the back side of the dial. The antenna receives signals passing through the dial. A voltaic is disposed between the dial and the antenna. The distance in between the antenna and the voltaic device is at least 0.2 times the length of the antenna. | 01-16-2014 |