Pulse or digital communications – Transceivers – Modems
Reexamination Certificate
2005-04-26
2005-04-26
Ha, Dac V. (Department: 2634)
Pulse or digital communications
Transceivers
Modems
C375S240000, C375S260000, C370S329000, C370S437000, C370S439000, C370S468000, C370S477000, C455S452200, C455S509000
Reexamination Certificate
active
06885697
ABSTRACT:
A communication band setting method and a communication device that can change a communication band in the ascending and descending directions. The communication device includes a transmission/reception unit that transmits and receives a signal using a plurality of sub carriers, an information storage unit that stores information as to whether each of the plurality of sub carriers is used for transmission or reception, a control unit that changes the information stored in the information storage unit in compliance with a control instruction. A transmission/reception process of the transmission/reception unit is controlled in accordance with the information stored in the information storage unit, so that a transmission band and a reception band are suitably adjusted.
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patent: 6097733 (2000-08-01), Basu et al.
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patent: 6532223 (2003-03-01), Sakoda et al.
patent: 6542460 (2003-04-01), Ring
patent: 61021662 (1986-01-01), None
Kajizaki Noriki
Tokunaga Shingo
Fujitsu Limited
Ha Dac V.
Katten Muchin Zavis & Rosenman
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