Timepiece including an antenna
First Claim
1. A timepiece adapted to be worn on a portion of the body having a cylindrical form such as the arm or the trunk, said timepiece including an antenna capable of capturing an electromagnetic field which includes a magnetic field H and an electrical field E, said electromagnetic field bearing radio-diffused messages and a case having at least a glass and a back cover, said case comprising, in addition to the elements necessary to display the time of day, a micro receiver which receives the messages captured by the antenna in order to transform such messages into data perceptible to the wearer of the timepiece, the antenna being situated within the space bounded by the case and being constituted by a coil including at least one winding said winding being arranged and oriented to capture the component (H.sub.φ
- ) of the magnetic field tangential to said cylinder, the axis of said winding being arranged parallel to the back cover of the case.
1 Assignment
0 Petitions
Accused Products
Abstract
A timepiece (4), adapted to be worn on a part of the body, for example on the wrist, is provided with an antenna capable of capturing an electromagnetic field bearing radio-diffused messages. Measurements have shown that when close to the wrist the radial electric component (Er) and the azimuthal or tangential magnetic component (H.sub.φ) were predominant. Consequently, in order to capture the first, a capacitive antenna the electrodes of which are parallel to the back cover (2) of the timepiece will be provided and, to capture the second, an inductive antenna including a winding the axis of which is parallel to the longitudinal direction of the bracelet (3) will be provided.
64 Citations
9 Claims
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1. A timepiece adapted to be worn on a portion of the body having a cylindrical form such as the arm or the trunk, said timepiece including an antenna capable of capturing an electromagnetic field which includes a magnetic field H and an electrical field E, said electromagnetic field bearing radio-diffused messages and a case having at least a glass and a back cover, said case comprising, in addition to the elements necessary to display the time of day, a micro receiver which receives the messages captured by the antenna in order to transform such messages into data perceptible to the wearer of the timepiece, the antenna being situated within the space bounded by the case and being constituted by a coil including at least one winding said winding being arranged and oriented to capture the component (H.sub.φ
- ) of the magnetic field tangential to said cylinder, the axis of said winding being arranged parallel to the back cover of the case.
- View Dependent Claims (2, 3, 4, 5)
- 6. A timepiece adapted to be worn on a portion of the body having a cylindrical form such as the arm or the trunk, said timepiece including an antenna capable of capturing an electromagnetic field which includes a magnetic field H and an electrical field E, said electromagnetic field bearing radio-diffused messages and a case having at least a glass and a back cover, said case comprising, in addition to the elements necessary to display the time of day, a micro receiver which receives the messages captured by the antenna in order to transform such messages into data perceptible to the wearer of the timepiece, the antenna being situated within the space bounded by the case and being formed by first and second substantially planar electrodes placed parallel to one another and separated by a dielectric, said electrodes being arranged and oriented so as to capture the component Er of the electrical field E radial to said cylinder, the planes of said electrodes being parallel to the back cover of said case.
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8. A timepiece adapted to be worn on a portion of the body having a cylindrical form such as the arm or the trunk, said timepiece including an antenna capable of capturing an electromagnetic field which includes a magnetic field H and an electrical field E, said electromagnetic field bearing radio-diffused messages and a case having at least a glass and a back cover, said case comprising, in addition to the elements necessary to display the time of day, a micro receiver which receives the messages captured by the antenna in order to transform such messages into data perceptible to the wearer of the timepiece, the antenna being situated within the space bounded by the case and formed by the combination of a coil including at least one winding, said coil being arranged and oriented so as to capture the component H.sub.φ
- of the magnetic field H tangential to said cylinder, the axis of said coil being arranged parallel to the back cover of said case and of first and second electrodes substantially planar placed parallel to one another and separated by a dielectric, said electrodes being arranged and oriented so as to capture the component Er of the electrical field radial to said cylinder, the planes of said electrodes being arranged parallel to the back cover of said case.
- View Dependent Claims (9)
Specification