High accuracy timepiece
AssigneeSeiko Instruments Inc.
InventorHiroyuki Masaki
Life of this patent
Estimating the term…
Abstract
Accuracy adjustment apparatus for a timepiece has an accuracy adjustment data input control section including a case-mounted switch such as a crown of the timepiece. A crown state detection signal is used to determine the state of the crown. When an accuracy adjustment data input mode is indicated based on the position of the crown, an indicator of the timepiece is driven to provide a visual indication of accuracy adjustment data selectable by operation of the crown. When the proper accuracy adjustment data has been selected, the data is stored to a memory.
Claims24
A high-accuracy timepiece having accuracy adjustment means for adjusting the timekeeping accuracy of the timepiece by inputting and storing in a writable data storage means accuracy adjustment data used for adjusting the timekeeping accuracy of the timepiece when the timepiece is in a fully assembled state, the accuracy adjustment means having accuracy adjustment data input means comprising:
- a manually operable crown movable between a first state in which accuracy adjustment data is to be input and a second state in which accuracy adjustment data is not to be input;
- crown state detection means for detecting the state of the crown and outputting a crown state detection signal depending on whether the crown is in the first state or the second state;
- and data input control means for inputting the crown state detection signal from the crown state detection means, determining whether a predetermined series of crown movements have been performed and, when the predetermined series of crown movements have been performed, determining that accuracy adjustment data is to be input, and causing the data storage means to store the accuracy adjustment data.
A timepiece having adjustable timekeeping accuracy, comprising:
- a memory for storing accuracy adjustment data used for adjusting the timekeeping accuracy of the timepiece;
- a switch mounted to a case of the timepiece for inputting the accuracy adjustment data;
- an indicator for indicating the accuracy adjustment data selectable by manual operation of the switch;
- detection means for detecting the state of the switch and outputting a state detection signal depending on the detected state;
- data input control means for determining whether a predetermined operation has been performed by manual operation of the switch based on the state detection signal, and, when the predetermined operation has been performed, determining that accuracy adjustment data is to be input and causing the memory to store the accuracy adjustment data;
- and rate adjustment means for adjusting a clock rate of the timepiece based on the stored accuracy adjustment data.
Dependencies are inferred from the claim text.