Telecommunications – Receiver or analog modulated signal frequency converter – Combined with diverse art device
Reexamination Certificate
2008-11-18
2011-11-22
Jones, Stephen (Department: 2817)
Telecommunications
Receiver or analog modulated signal frequency converter
Combined with diverse art device
C370S345000, C709S217000
Reexamination Certificate
active
08064874
ABSTRACT:
This invention has as its object to reduce power consumption of dependent stations with low frequency of communication by controlling communications of the control station in a network. According to this invention, a control station communicating with dependent stations comprises a classification unit configured to classify the dependent stations connected to the control station into a plurality of groups; a first transmission unit configured to transmit first broadcast-frame to the dependent stations classified into first group; and a second transmission unit configured to transmit second broadcast-frame to the dependent stations classified into second group with lower frequency of communication compared to the first group, wherein the second transmission unit transmits the second broadcast-frame with a lower transmitting frequency compared to the first broadcast-frame transmitting frequency of the first transmission unit.
REFERENCES:
patent: 2008/0313304 (2008-12-01), Kanda
Http://www.usb.org/developers/wusb, Nov. 18, 2008.
Eguchi Tadashi
Takasaki Atsushi
Canon Kabushiki Kaisha
Cowan Liebowitz & Latman P.C.
Jones Stephen
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