A simple electronic horological device, termed a time cell, is presented with associated methods, systems, and computer program products. A time cell has an insulated, charge storage element that receives an electrostatic charge through its insulating medium, i.e. it is programmed. Over time, the charge storage element then loses the electrostatic charge through its insulating medium. Given the reduction of the electric potential of the programmed charge storage element at a substantially known ...

Analog display horological piece, comprising at least a step by step motor (18, 20) driving hands (MN, H) for displaying a time keeping information; means of controlling said step by step motor; position detectors (51-62) providing in angular sector defined on the piece, the activation of each of said position detectors enabling the selection of a predetermined digital piece of information (0-9, .times., .div., +, -, =); means (36, 40) for inputting said selected digital piece of information; an...

A generator (50) able to be fitted to a clockwork system including a crystal (51a) used as a time base, includes a first oscillator (51) able to supply a first frequency (f1), a second oscillator (56) able to supply a second frequency (f2), a divider (60) able to supply a third frequency (f3) from the second frequency, a comparator (52) able to compare the third and first frequencies, and a control loop including a filter (54) connected to the comparator and able to control the second oscillator...

The invention concerns a subassembly intended to be mounted in a portable device enabling the reception and/or emission of radio diffused messages as well as the selection of predetermined digital information. This subassembly comprises an antenna (4) and position sensors (6.1 to 6.12) disposed an a same isolating support (30). The subassembly is realised in manner such that mutual perturbations created by the combination of the antenna (4) and the position sensors (6.1 to 6.12) are avoided. The...

A liquid crystal horological instrument employing a display comprising a layer of liquid crystal material sandwiched between transparent parallel plates and incorporating a reflective surface on the side of the display opposite that side which is viewed by an observer. Electrical lamp means are incorporated into the horological instrument for evenly illuminating the display in the absence of ambient light. The lamp means is powered by the same battery as that used to power the display and the dr...

When a watch spring is to be welded to a collet, difficulties arise from the small size and weight of the parts concerned. There are overcome by locating the spring on a rotatable plate, placing the collet on an arbour concentric with the spring, connecting an electric potential between the collet and spring, rotating the spring till its inner end touches a nose on the collet, producing a slight locating weld by a spark passing between the parts, and then applying a welding laser beam to the joi...

A portable wireless telephone including a main unit of small volume to which an antenna, an earpiece and a microphone are connected. The means for composing a number to be called include a display system (4, 5, 13) in which the digits making up the number to be called can be displayed, one after another, by the manipulation of a crown (10). Such crown can be rotated (60) then pressed (61) in order respectively to choose a digit then confirm it and continuing thus until said number is entirely co...

The present invention provides a horological piece (P) comprising an energy source having at least one photovoltaic cell (1) capable of transforming luminous radiation into an electrical current. This photovoltaic cell includes an active surface (F) sensitive to luminous radiation. A horometrical movement (56) is supplied by the energy source and is capable of supplying time keeping information. A display (58) is adapted to receive the time keeping information supplied by the horometrical moveme...

A horological piece includes a display (10) comprising a recurring cycle indicator (13) driven by an independent motor (11) and having a supplementary display position (14) at which a sign representative of the state of charge of an energy source controlling the display, is provided. The horological piece further includes a detection circuit (2, 16) adapted to, firstly, during the detection of a predetermined level of charge of the energy source, control the display so that the recurring cycle i...

The invention concerns a linearly or circularly polarized antenna, comprising a dielectric substrate and a conductive element fixed on the dielectric substrate and being delimited at its periphery by an edge which confers to this element a double planar symmetry along two perpendicular axes. In one embodiment, the conductive element includes an excitation point located on a first axis and a first pair of slots which extends along the second of the axes from the periphery towards the center of th...