Integrated circuit, non-contact IC card, reader/writer, wireless communications method, and computer program
AssigneeFeliCa Networks, Inc.
InventorYoichi Uramoto
Life of this patent
Estimating the term…
Abstract
An integrated circuit, a non-contact IC card, a reader/writer, a wireless communications method, and a computer program are provided to improve communication. The integrated circuit configured to execute wireless communication by means of magnetic field. The integrated circuit has a resonance circuit having resonance frequencies of a plurality of levels, a confirmation block configured to confirm whether a predetermined condition is satisfied, and a switching block configured to change the resonance frequencies if the predetermined condition is found satisfied as a result of the confirmation.
Claims10
An integrated circuit configured to execute wireless communication by use of a magnetic field, comprising:
- a resonance circuit having resonance frequencies of a plurality of levels;
- a confirmation block configured to confirm whether a predetermined condition is satisfied, the predetermined condition being either a predetermined count executed in the confirmation block or a predetermined period of time measured in the confirmation block;
- and
- a switching block configured to change said resonance frequencies if said predetermined condition is found satisfied as a result of the confirmation.
A wireless communications method based on an integrated circuit having a resonance circuit having resonance frequencies of a plurality of levels, comprising the steps of:
- confirming whether a predetermined conditions is satisfied, the predetermined condition being either a predetermined count or a predetermined period of time;
- and
- changing said resonance frequencies by switching between said resonance frequencies if said predetermined condition is found satisfied.
A computer memory storing a computer program configured to control an integrated circuit having resonance frequencies of a plurality of levels, comprising the processes of:
- confirming whether a predetermined conditions is satisfied, the predetermined condition being either a predetermined count or a predetermined period of time;
- and
- changing said resonance frequencies by switching between said resonance frequencies if said predetermined condition is found satisfied.
An integrated circuit configured to execute wireless communication by use of a magnetic field, comprising:
- a resonance circuit having resonance frequencies of a plurality of levels;
- a confirmation block configured to confirm whether a predetermined condition is satisfied, the predetermined condition being a predetermined count executed in the confirmation block;
- and
- a switching block configured to change said resonance frequencies if said predetermined condition is found satisfied as a result of the confirmation.
An integrated circuit configured to execute wireless communication by use of a magnetic field, comprising:
- a resonance circuit having resonance frequencies of a plurality of levels;
- a confirmation block configured to confirm whether a predetermined condition is satisfied, the predetermined condition being a predetermined period of time measured in the confirmation block;
- and
- a switching block configured to change said resonance frequencies if said predetermined condition is found satisfied as a result of the confirmation.
An integrated circuit configured to execute wireless communication by use of a magnetic field, comprising:
- a resonance circuit having resonance frequencies of a plurality of levels;
- a confirmation block configured to confirm whether a predetermined condition is satisfied;
- a switching block configured to change said resonance frequencies if said predetermined condition is found satisfied as a result of the confirmation;
- and
- a capacitor having capacitances of a plurality of levels, said switching block switching between said capacitances to change said resonance frequencies.
An integrated circuit configured to execute wireless communication by use of a magnetic field, comprising:
- a resonance circuit having resonance frequencies of a plurality of levels;
- a confirmation block configured to confirm whether a predetermined condition is satisfied;
- a switching block configured to change said resonance frequencies if said predetermined condition is found satisfied as a result of the confirmation;
- and
- an inductor having inductances of a plurality of levels, said switching block switching between said inductances to change said resonance frequencies.
Dependencies are inferred from the claim text.