Calling system from accessory to portable device
First Claim
Patent Images
1. A communication method between a portable device and its accessory using a radio channel, comprising the steps of:
- depressing a predetermined key of the accessory to transmit a ringing signal to the portable device;
when receiving the ringing signal from the accessory, the portable device starts alerting;
transmitting a response signal to the accessory to notify the accessory that the portable device is alerting; and
depressing a predetermined key of the portable device so that the portable device stops alerting.
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Abstract
A radio communication method allowing a portable device to be easily found using its accessory is disclosed. In response to an operation of a predetermined key of the accessory, the accessory transmits a ringing signal to the portable device. When receiving the ringing signal from the accessory, the portable device starts alerting and, when a predetermined key of the portable device is operated, the portable device stops alerting.
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Citations
19 Claims
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1. A communication method between a portable device and its accessory using a radio channel, comprising the steps of:
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depressing a predetermined key of the accessory to transmit a ringing signal to the portable device; when receiving the ringing signal from the accessory, the portable device starts alerting; transmitting a response signal to the accessory to notify the accessory that the portable device is alerting; and depressing a predetermined key of the portable device so that the portable device stops alerting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A radio communication system comprising a portable device and its accessory, wherein
the portable device comprises: -
a first communication controller for controlling communication with the accessory at a radio channel according to a predetermined protocol; at least one alerting device for ringing in a certain mode; a keypad for inputting a desired instruction; and a first controller controlling the communication controller and the at least one alerting device such that the at least one alerting device starts alerting according to the certain mode when receiving a ringing signal from the accessory, and stops alerting when a predetermined key of the keypad is depressed, where the first controller transmits a response signal to the accessory to notify the accessory that the portable device is alerting, and the accessory comprises; a second communication controller for controlling communication with the accessory at a radio channel according to the predetermined protocol; an input device for inputting a ringing instruction; and a second controller controlling the second communication controller such that a ringing signal is transmitted to the portable device when a predetermined key of the accessory is depressed. - View Dependent Claims (14, 15, 16, 17)
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18. A portable device allowing radio communication with its accessory, comprising:
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a communication controller for controlling communication with the accessory at a radio channel according to a predetermined protocol; at least one alerting device for ringing in a certain mode; a keypad for inputting a desired instruction; and a controller controlling the communication controller and the at least one alerting device such that the at least one alerting device starts alerting according to the certain mode when receiving a predetermined ringing signal from the accessory, and stops alerting when a predetermined key of the keypad is depressed, where the controller transmits a response signal to the accessory to notify the accessory that the portable device is alerting.
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19. An accessory for a portable device allowing radio communication with its accessory, wherein the portable device starts alerting when receiving a predetermined ringing signal from the accessory, comprising:
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a communication controller for controlling communication with the accessory at a radio channel according to the predetermined protocol; an input device for inputting a ringing instruction; a controller controlling the second communication such that the predetermined ringing signal is transmitted to the portable device when a predetermined key of the accessory is depressed; and a processor for receiving a response signal to notify the accessory that the portable device is alerting.
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Specification