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US 2002/0119802 A1Published application
Portable cellular phone
AssigneeNEC Corporation
InventorKazuyoshi Hijii
Life of this patent
Estimating the term…
Abstract
A portable cellular phone is provided which is capable of surely detecting a state of folding of phone bodies by detection of a weak magnetic field produced by a receiver. A first phone body has a Hall integrated circuit (IC) adapted to detect a magnetic flux formed by a receiver. When the first phone body and a second phone body are folded closed, a magnetic flux density of the magnetic flux that is formed by the receiver and passes through the Hall IC is changed by a magnetic material placed in the second phone body.
Claims8
A portable cellular phone comprising:
- a first phone body having a receiver;
- a second phone body being coupled to said first phone body by using a hinge such that said first and second phone bodies may be folded closed;
- a magnetic flux detector placed in said first phone body and operated to detect a magnetic flux formed by said receiver;
- and
- a magnetic material placed in said second phone body and used to change a magnetic flux density of said magnetic flux that is formed by said receiver and passes through said magnetic flux detector when said first and second phone bodies are folded closed.
2 more elements
A portable cellular phone comprising:
- a first phone body having a receiver;
- a second phone body being coupled to said first phone body by using a hinge such that said first and second phone bodies may be folded closed;
- a magnetic flux detector placed in said first phone body and operated to detect a magnetic flux formed by said receiver;
- and
- a magnet placed in said second phone body and used to change a magnetic flux density of said magnetic flux that is formed by said receiver and passes through said magnetic flux detector when said first and second phone bodies are folded closed.
2 more elements
Dependencies are inferred from the claim text.