Title:
放送塔の発見およびフェールオーバーの方法
Document Type and Number:
Japanese Patent JP4098229
Kind Code:
B2
Abstract:
Described is a communication system including wireless client devices. In the described system, the client devices may be wrist-worn watches such as are in common use today, except that the watches are specially configured to receive transmissions from broadcast towers. A client device is associated with one or more home service regions, and is configured to receive personal messages on a home channel when in the home service region. The client device employs a self-assignment method to identify and select a home channel without the need for interaction by a user. A tower discovery method is employed to identify broadcast towers and available channels within a service region. A failover method is employed to identify a change in the broadcast system, and take appropriate action such as, for example, changing to another broadcast tower, selecting another frequency, selecting a sleep mode, as well as others
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Inventors:
Earl Donald Thompson The Third
Kozmin A. Corvea
Kozmin A. Corvea
Application Number:
JP2003413728A
Publication Date:
June 11, 2008
Filing Date:
December 11, 2003
Export Citation:
Assignee:
MICROSOFT CORPORATION
International Classes:
H04B1/16; H03J1/00; H04H20/00; H04H60/41; H04L12/56; H04W48/16; H04W72/12; H04W84/02; H04H20/57; H04W4/06; H04W24/00; H04W36/00; H04W48/18; H04W52/02; H04W72/02; H04W99/00
Domestic Patent References:
| JP10512431A | ||||
| JP6014520Y2 |
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kiyoshi Goda
Kazuo Abe
Kiyoshi Goda