# US 10,503,123 B2 · Analog electronic timepiece and hand drive control device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,503,123 B2 - Document ID: US10503123B2 - Status: Granted - Kind: B2 - Application number: 15/204,611 - Filed: 2016-07-07 - Published: 2017-03-16 - Granted: 2019-12-10 - Earliest claimed: 2015-09-15 - Assignees: Casio Computer Co., Ltd. - Applicants: Casio Computer Co., Ltd. - Inventors: Kosuke Hasegawa - Web page: https://patentgrep.com/patent/US10503123B2 ## CPC - G04G 9/0005: {Transmission of control signals} - G04C 3/14: incorporating a stepping motor (G04C3/02 - G04C3/12 take precedence {; generating commutating pulses in primary clocks G04C13/0463}) - G04G 5/00: Setting, i.e. correcting or changing, the time-indication (radio-controlled time-pieces G04R) - G04G: ELECTRONIC TIME-PIECES - G04C: ELECTROMECHANICAL CLOCKS OR WATCHES ## Abstract An analog electronic timepiece, including: a hand which is provided to be rotatable; and a processor which makes the hand perform at least one of an acceleration operation and a deceleration operation as a speed change operation when the hand is made to perform a fast forward movement, the acceleration operation being an operation of gradually increasing a fast forward speed of the hand from a stopped state when the fast forward movement is started, and the deceleration operation being an operation of gradually decreasing the fast forward speed until the hand comes into the stopped state when the fast forward movement is ended. ## Claims ### Claim 1 An analog electronic timepiece, comprising: a hand which is provided to be rotatable; and a processor which makes the hand perform at least one of an acceleration operation and a deceleration operation as a speed change operation when the hand is made to perform a fast forward movement, the acceleration operation being an operation of gradually increasing a fast forward speed of the hand from a stopped state when the fast forward movement is started, and the deceleration operation being an operation of gradually decreasing the fast forward speed until the hand comes into the stopped state when the fast forward movement is ended; wherein, when a target movement amount of the hand in the fast forward movement is determined, the processor sets a speed change start movement amount and a speed change end movement amount in the fast forward movement for the target movement amount based on the target movement amount, the speed change start movement amount being a movement amount of the hand at a timing when the speed change operation is started, and the speed change end movement amount being a movement amount of the hand at a timing when the speed change operation is ended, and wherein, when the processor changes the fast forward speed between a predetermined number of two or more movement speeds in a stepwise manner in the speed change operation and makes the hand perform the fast forward movement at a predetermined interval, the processor sets the predetermined number and the movement speeds so that the fast forward movement is ended within an upper limit fast forward time which is less than the predetermined interval. ### Claim 2 (depends on 1) The analog electronic timepiece according to claim 1, further comprising a memory in which a plurality of types of speed change patterns are stored, each of the speed change patterns associating a plurality of speed change timings in the speed change operation with respective movement speeds after the speed change timings, wherein the processor selects one of the speed change patterns based on the upper limit fast forward time and a required time of the fast forward movement including the speed change operation by each of the plurality of types of speed change patterns, and the processor makes the hand perform the fast forward movement according to the selected speed change pattern. ### Claim 3 (depends on 2) The analog electronic timepiece according to claim 2, wherein, when the required time of the fast forward movement according to the speed change pattern is shorter than a time required for the speed change operation, the processor makes the hand perform an operation for an amount of the required time, the operation being a low speed part of the speed change operation according to the speed change pattern. ### Claim 4 (depends on 3) The analog electronic timepiece according to claim 3, wherein the processor sets the predetermined number and the movement speeds based on a display content by the hand. ### Claim 5 (depends on 3) The analog electronic timepiece according to claim 3, further comprising a sensor which measures a predetermined physical quantity, wherein the processor obtains a measurement result by the sensor at the predetermined interval, and determines a fast forward destination of the hand based on the obtained measurement result. ### Claim 6 (depends on 3) The analog electronic timepiece according to claim 3, wherein the processor determines whether to perform the speed change operation according to the target movement amount. ### Claim 7 (depends on 2) The analog electronic timepiece according to claim 2, wherein the processor sets the predetermined number and the movement speeds based on a display content by the hand. ### Claim 8 (depends on 2) The analog electronic timepiece according to claim 2, further comprising a sensor which measures a predetermined physical quantity, wherein the processor obtains a measurement result by the sensor at the predetermined interval, and determines a fast forward destination of the hand based on the obtained measurement result. ### Claim 9 (depends on 2) The analog electronic timepiece according to claim 2, wherein the processor determines whether to perform the speed change operation according to the target movement amount. ### Claim 10 (depends on 1) The analog electronic timepiece according to claim 1, wherein the processor sets the predetermined number and the movement speeds based on a display content by the hand. ### Claim 11 (depends on 10) The analog electronic timepiece according to claim 10, further comprising a sensor which measures a predetermined physical quantity, wherein the processor obtains a measurement result by the sensor at the predetermined interval, and determines a fast forward destination of the hand based on the obtained measurement result. ### Claim 12 (depends on 1) The analog electronic timepiece according to claim 1, further comprising a sensor which measures a predetermined physical quantity, wherein the processor obtains a measurement result by the sensor at the predetermined interval, and determines a fast forward destination of the hand based on the obtained measurement result. ### Claim 13 (depends on 1) The analog electronic timepiece according to claim 1, wherein the processor determines whether to perform the speed change operation according to the target movement amount. ### Claim 14 An analog electronic timepiece, comprising: a hand which is provided to be rotatable; a processor which makes the hand perform at least one of an acceleration operation and a deceleration operation as a speed change operation when the hand is made to perform a fast forward movement, the acceleration operation being an operation of gradually increasing a fast forward speed of the hand from a stopped state when the fast forward movement is started, and the deceleration operation being an operation of gradually decreasing the fast forward speed until the hand comes into the stopped state when the fast forward movement is ended; and a hand driver which makes the hand perform a step operation by a predetermined angle, wherein, when a target movement amount of the hand in the fast forward movement is determined, the processor sets a speed change start movement amount and a speed change end movement amount in the fast forward movement for the target movement amount based on the target movement amount, the speed change start movement amount being a movement amount of the hand at a timing when the speed change operation is started, and the speed change end movement amount being a movement amount of the hand at a timing when the speed change operation is ended, and wherein a lowest value among a predetermined number of two or more movement speeds in the speed change operation is determined based on at least one of the predetermined angle and a length of the hand. ### Claim 15 A hand drive control device, comprising: a driver which rotates a hand; and a processor which makes the driver perform at least one of an acceleration operation and a deceleration operation as a speed change operation when the driver performs a fast forward movement of the hand, the acceleration operation being an operation of gradually increasing a fast forward speed of the hand from a stopped state when the fast forward movement is started, and the deceleration operation being an operation of gradually decreasing the fast forward speed until the hand comes into the stopped state when the fast forward movement is ended, wherein, when a target movement amount of the hand in the fast forward movement is determined, the processor sets a speed change start movement amount and a speed change end movement amount in the fast forward movement for the target movement amount based on the target movement amount, the speed change start movement amount being a movement amount of the hand at a timing when the speed change operation is started, and the speed change end movement amount being a movement amount of the hand at a timing when the speed change operation is ended, and wherein, when the processor changes the fast forward speed between a predetermined number of two or more movement speeds in a stepwise manner in the speed change operation and makes the driver perform the fast forward movement of the hand at a predetermined interval, the processor sets the predetermined number and the movement speeds so that the fast forward movement is ended within an upper limit fast forward time which is less than the predetermined interval. ### Claim 16 A hand drive control device, comprising: a driver which rotates a hand; and a processor which makes the driver perform at least one of an acceleration operation and a deceleration operation as a speed change operation when the driver performs a fast forward movement of the hand, the acceleration operation being an operation of gradually increasing a fast forward speed of the hand from a stopped state when the fast forward movement is started, and the deceleration operation being an operation of gradually decreasing the fast forward speed until the hand comes into the stopped state when the fast forward movement is ended, wherein the driver makes the hand perform a step operation by a predetermined angle, and wherein a lowest value among a predetermined number of two or more movement speeds in the speed change operation is determined based on at least one of the predetermined angle and a length of the hand.