# US 10,372,084 B2 · Analog electronic watch > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,372,084 B2 - Document ID: US10372084B2 - Status: Granted - Kind: B2 - Application number: 15/207,947 - Filed: 2016-07-12 - Published: 2017-03-16 - Granted: 2019-08-06 - Earliest claimed: 2015-09-10 - Assignees: Casio Computer Co., Ltd. - Applicants: Casio Computer Co., Ltd. - Inventors: Hiroshi Morohoshi - Web page: https://patentgrep.com/patent/US10372084B2 ## CPC - G04B 19/04: Hands; Discs with a single mark or the like {(moving indicating arrangements which have scales or numbers with stationary hands or reading means G04B19/20; optical projection of the position of the hands G04B19/34)} - G04C 3/14: incorporating a stepping motor (G04C3/02 - G04C3/12 take precedence {; generating commutating pulses in primary clocks G04C13/0463}) - G04C 17/00: Indicating the time optically by electric means (G04C19/00 takes precedence) - G04G 3/00: Producing timing pulses (driving circuits for stepping motors G04C3/14; producing preselected time intervals for use as timing standards G04F5/00; pulse technique in general H03K; control, synchronisation, or stabilisation of generators in general H03L) - G04C 3/146: {incorporating two or more stepping motors or rotors} - G04B: MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at pre-selected times or after predetermined time intervals G04C23/00; clocks or watches with stop devices G04F7/08) - G04C: ELECTROMECHANICAL CLOCKS OR WATCHES - G04G: ELECTRONIC TIME-PIECES ## Abstract An analog electronic watch includes a hand and a control unit. The hand is configured to be rotatable. The control unit fast-forwards the hand to perform a fast-forward operation in different ways according to whether a type of a display object after switching is a time type or a period type, in a case where display contents are switched by using the hand. ## Claims ### Claim 1 An analog electronic watch comprising: a hand that is configured to be rotatable; and a control unit that controls the hand to perform a fast-forward operation during a display switching process that switches a display content to be displayed by the hand, the control unit controlling the hand such that the fast-forward operation differs between (i) a first case in which the display content after the display switching process relates to a current time, and (ii) a second case in which the display content after the display switching process relates to measurement of a time interval, wherein: in the first case, the control unit changes a fast-forward speed of the hand while the fast-forward operation is being performed, and in the second case, the control unit does not change the fast-forward speed of the hand while the fast-forward operation is being performed. ### Claim 2 (depends on 1) The analog electronic watch according to claim 1, wherein: the control unit changes the fast-forward speed of the hand based on a remaining movement amount of the hand in the fast-forward operation. ### Claim 3 (depends on 2) The analog electronic watch according to claim 2, wherein: the control unit selects one of a normal rotation direction and a reverse rotation direction in which to rotate the hand during the fast-forward operation, the one of the normal rotation direction and the reverse rotation direction being a rotation direction by which the hand rotates to a position corresponding to the display content after the display switching process more quickly than the other of the normal rotation direction and the reverse rotation direction. ### Claim 4 (depends on 2) The analog electronic watch according to claim 2, further comprising: a plurality of hands that are configured to perform display in respective different units of time, and wherein the control unit fast-forwards at least two of the plurality of hands while maintaining a predetermined ratio between the respective units of time in which the at least two hands are configured to perform display. ### Claim 5 (depends on 1) The analog electronic watch according to claim 1, wherein: in the first case or in the second case, the control unit fast-forwards the hand to an initial position, and fast-forwards the hand from the initial position to a position corresponding to the display content after the display switching process. ### Claim 6 (depends on 5) The analog electronic watch according to claim 5, wherein: in the second case, the control unit fast-forwards the hand to the initial position, and fast-forwards the hand from the initial position to the position corresponding to the display content after the display switching process. ### Claim 7 (depends on 6) The analog electronic watch according to claim 6, wherein: the control unit selects one of a normal rotation direction and a reverse rotation direction in which to rotate the hand during the fast-forward operation, the one of the normal rotation direction and the reverse rotation direction being a rotation direction by which the hand rotates to a position corresponding to the display content after the display switching process more quickly than the other of the normal rotation direction and the reverse rotation direction. ### Claim 8 (depends on 5) The analog electronic watch according to claim 5, wherein: the control unit selects one of a normal rotation direction and a reverse rotation direction in which to rotate the hand during the fast-forward operation, the one of the normal rotation direction and the reverse rotation direction being a rotation direction by which the hand rotates to a position corresponding to the display content after the display switching process more quickly than the other of the normal rotation direction and the reverse rotation direction. ### Claim 9 (depends on 1) The analog electronic watch according to claim 1, wherein: the control unit selects one of a normal rotation direction and a reverse rotation direction in which to rotate the hand during the fast-forward operation, the one of the normal rotation direction and the reverse rotation direction being a rotation direction by which the hand rotates to a position corresponding to the display content after the display switching process more quickly than the other of the normal rotation direction and the reverse rotation direction. ### Claim 10 (depends on 1) The analog electronic watch according to claim 1, further comprising: a plurality of hands that are configured to perform display in respective different units of time, and wherein the control unit fast-forwards at least two of the plurality of hands while maintaining a predetermined ratio between the respective units of time in which the at least two hands are configured to perform display. ### Claim 11 (depends on 1) The analog electronic watch according to claim 1, further comprising: a plurality of hands that are configured to perform display in respective different units of time, wherein in one of the first case and the second case, the control unit fast-forwards at least two of the plurality of hands while maintaining a predetermined ratio between the respective units of time in which the at least two hands are configured to perform display, and in the other of the first case and the second case, the control unit independently fast-forwards the at least two hands to positions corresponding to their respective display contents after the display switching process. ### Claim 12 (depends on 11) The analog electronic watch according to claim 11, wherein: in the one of the first case and the second case where the control unit independently fast-forwards the at least two hands, the control unit changes the fast-forward speeds of the at least two hands while the fast-forward operation is being performed; and in the other of the first case and the second case where the control unit fast-forwards the at least two hands while maintaining the predetermined ratio between the respective units of time in which the at least two hands are configured to perform display, the control unit does not change the fast-forward speeds of the at least two hands while the fast-forward operation is being performed. ### Claim 13 (depends on 1) The analog electronic watch according to claim 1, further comprising: an operation receiving unit that is operable a user, wherein the control unit performs the display switching process in response to an operation input to the operation receiving unit.