Navigation wristwear
AssigneeTrimble Navigation Limited
InventorsArthur N. Woo, Kiyoko M. Mura-Smith, Gregory T. Janky
Life of this patent
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Abstract
A navigation wristwear device comprises a GPS receiver fully disposed in a wrist watch type housing. A transparent microwave patch antenna is patterned of indium-tin-oxide on sapphire in front of an LCD time, position and velocity display. A bezel provides a protective window. A low-noise amplifier, downconversion, code processing and navigation processing are all provided on a single integrated circuit. Photovoltaic solar cells to each side of the LCD help keep a battery charged.
Claims12
A navigation wristwear device, comprising:
- means for establishing a radio link to communicate downconverted and demodulated code suitable for navigation processing;
- a first part including an antenna to receive L-band microwave signals from orbiting navigation satellites, a downconverter connected to remove the carrier frequencies from said signals, and a code processor connected to despread and track said signals and connected to communicate corrected ranging and timing information via the radio link means;
- and
- a wrist watch type housing with straps in which is disposed a navigation processor connected to receive said corrected ranging and timing information via the radio link means, and a display connected to receive position, velocity and time information from triangulation of said corrected ranging and timing information.
A navigation wristwear device, comprising:
- a wrist watch type housing with straps in which is disposed an antenna to receive L-band microwave signals from orbiting navigation satellites, a downconverter connected to remove the carrier frequencies from said signals, and a code processor connected to despread and track said signals and to provide a radio link having corrected ranging and timing information, a navigation-processor connected to receive said radio link having corrected ranging and timing information, and a display connected to receive position, velocity and time information from triangulation of said corrected ranging and timing information;
- wherein said antenna is placed in a stack behind a protective bezel and in front of said display and is constructed to permit viewing of said position, velocity and time information on said display through said protective bezel;
- said downconverter, code processor and navigation processor all share a single integrated circuit placed beneath said display;
- and
- a battery connected to power said single integrated circuit and said display is disposed in the bottom of said wrist watch type housing behind a backing plate.
A navigation wristwear device, comprising:
- means for establishing a radio link to communicate downconverted and demodulated code suitable for navigation processing;
- a first part including an antenna to receive L-band microwave signals from orbiting navigation satellites, a downconverter connected to remove the carrier frequencies from said signals, and a code processor connected to despread and track said signals and connected to communicate corrected ranging and timing information via the radio link means;
- and
- a wrist watch type housing with straps in which is disposed a navigation processor connected to receive said corrected ranging and timing information via the radio link means, and a display connected to receive position, velocity and time information from triangulation of said corrected ranging and timing information;
- and
- wherein said orbiting navigation satellites include a master clock to which said navigation processor recalibrates and synchronizes itself for the presentation of time of day information on said display.
Dependencies are inferred from the claim text.