Abstract: A watch for keeping time that comprises a watchcase for housing the movement, the stem, and the crown. The watchcase comprises a lid having a crystal and a body configured to mate with the lid, the body comprising a floor that supports the movement and a wall surrounding the floor, wherein the wall has a notch into which the crown protrudes and wherein the watchcase formed by mating the lid with the body encloses the movement, the stem, and the crown on all sides. A method for setting the time on a watch with an enclosed crown.

Abstract: The dial (4) of the watch is fitted with an indicator (10), preferably with a hand (11), which displays the function fulfilled by a control crown (8), respectively, in each axial position of the crown, including a highly water resistant position in the case of a screwed-in crown. The indicator is controlled by axial movements of a sleeve (15) secured to the crown, via a transmission mechanism (30) including a slide block (35) that is mobile parallel to an axis of rotation (14) of the crown. The hand is secured to a pinion (32) meshed with a rack (34) arranged on a slide block. The slide block includes a flexible part (38) between a back part that slides in a groove (36), and a front arm (39) provided with a lateral finger (40) engaged in an annular groove of the sleeve. This transmission is compact and facilitates assembly and removal.

Abstract: A data synchronizer (210) transfers data from a data sending circuit (120) to a data receiving circuit (130). The data sending circuit is synchronous with a first clock (SCLK), and a data receiving circuit is synchronous with a second clock (RCLK). The two clocks have equal frequencies but may be out of phase. The synchronizer includes a circular FIFO. The FIFO entries (FF0-FF3) are written synchronously with the first clock (SCLK). The entries' outputs are connected to a multiplexer (230) whose select signals (RSEL0-RSEL3) are generated synchronously with the second clock (RCLK). Multiple entries make their data items available to the multiplexer at the same time. The sender (120) writes a data item and a data valid flag to the FIFO in each cycle of the first clock. The receiver (130) reads the FIFO in each cycle of the second clock.