Positioning device, electronic instrument, and storage medium storing program
AssigneeSeiko Epson Corporation
InventorAkira KIMURA
Life of this patent
Estimating the term…
Abstract
Signals output from two filters included in a filter section 70 and differing in passband are respectively stored in different memories included in a memory section 80, and a positioning process is performed based on the signal stored in the memory. Specifically, the signal strength of a received signal is calculated by a coherent accumulation process and an incoherent accumulation process, and a signal system used for positioning is alternatively switched to a high-sensitivity system S1 or a high-accuracy system S2 as a result of determining whether or not the signal strength is equal to or greater than a threshold value.
Claims10
(canceled)
A positioning device comprising:
- a first filter and a second filter, the first filter and the second filter having a variable passband and extracting a signal in a specific frequency band from a signal received from a GPS satellite;
- a first storage section that stores a signal output from the first filter;
- a second storage section that stores a signal output from the second filter;
- and
- a positioning section that performs a specific positioning process based on the signal stored in the first storage section or the second storage section.
An electronic instrument comprising:
- a first filter and a second filter, the first filter and the second filter having a variable passband and extracting a signal in a specific frequency band from a signal received from a GPS satellite;
- a first storage section that stores a signal output from the first filter;
- a second storage section that stores a signal output from the second filter;
- and
- a positioning section that performs a specific positioning process based on the signal stored in the first storage section or the second storage section.
A computer-readable storage medium storing a program adapted for a device that includes a first filter and a second filter that have a variable passband and extract a signal in a specific frequency band from a signal received from a GPS satellite, a first storage section that stores a signal output from the first filter, a second storage section that stores a signal output from the second filter, and a processor, the program causing the processor to:
- set the passbands of the first filter and the second filter;
- and
- perform a specific positioning process based on the signal stored in the first storage section or the second storage section.
Dependencies are inferred from the claim text.