Radio communication device and method
First Claim
1. A method of operating a radio communication device capable of operating with a selected transmission type on a selected one of a plurality of operating frequencies, the method comprising the steps of:
- generating a control signal representing a selected operating frequency for said radio communication device;
determining whether said selected operating frequency is one of a set of allowable frequencies;
when said selected operating frequency is one of said set of allowable frequencies, effecting transmission on said selected operating frequency; and
when said selected operating frequency is not one of said set of allowable frequencies, ascertaining whether a transmission on said selected operating frequency and of said selected transmission type is detected and, only when a transmission at said selected operating frequency is detected, effecting transmission on said selected operating frequency.
9 Assignments
0 Petitions
Accused Products
Abstract
A radio communication device, suitable for use in a portable computer, is capable of operating at any one of a set of common frequencies which are legally permissible in all countries (or a set of countries) and at any frequency on which it detects that a transmission of its own type is being used for a transmission from another device. Thus, users can legally operate the device in different countries, while manufacturers can obtain certification for use in those countries. If the user attempts to select a frequency which is not one of the common frequencies nor detected by transmission, an indication that such frequency is not available is provided to the user.
156 Citations
9 Claims
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1. A method of operating a radio communication device capable of operating with a selected transmission type on a selected one of a plurality of operating frequencies, the method comprising the steps of:
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generating a control signal representing a selected operating frequency for said radio communication device; determining whether said selected operating frequency is one of a set of allowable frequencies; when said selected operating frequency is one of said set of allowable frequencies, effecting transmission on said selected operating frequency; and when said selected operating frequency is not one of said set of allowable frequencies, ascertaining whether a transmission on said selected operating frequency and of said selected transmission type is detected and, only when a transmission at said selected operating frequency is detected, effecting transmission on said selected operating frequency. - View Dependent Claims (2, 3)
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4. A method of operating a radio communication device capable of operating with a selected transmission type on a selected one of a plurality of operating frequencies, the method comprising the steps of:
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determining whether the selected operating frequency is one of a set of allowable frequencies; generating a control signal representing the selected operating frequency for the radio communication device; effecting transmission on the selected operating frequency when the selected operating frequency is one of the set of allowable frequencies; and ascertaining whether a transmission on the selected operating frequency and of the selected transmission type is detected when the selected operating frequency is not one of the set of allowable frequencies, and effecting transmission on the selected operating frequency when a transmission at the selected operating frequency is detected. - View Dependent Claims (5, 6)
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7. A radio communication device capable of operating with a selected transmission type on a selected one of a plurality of operating frequencies, comprising:
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means for determining whether the selected operating frequency is one of a set of allowable frequencies; means for generating a control signal representing a selected operating frequency for the radio communication device; means for effecting transmission on the selected operating frequency when the selected operating frequency is one of the set of allowable frequencies; and means for ascertaining whether a transmission on the selected operating frequency and of the selected transmission type is detected when the selected operating frequency is not one of the set of allowable frequencies and for effecting transmission on the selected operating frequency when a transmission at the selected operating frequency is detected. - View Dependent Claims (8, 9)
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Specification