Pulse or digital communications – Repeaters
Reexamination Certificate
2006-04-25
2006-04-25
Kim, Kevin (Department: 2638)
Pulse or digital communications
Repeaters
Reexamination Certificate
active
07035320
ABSTRACT:
Signals with transmission frequencies from hand sets are received by a receiver. The whole frequency spectrum including the received signals whose frequency is converted by the receivers inverted by a signal processor. Then, the received signals included in the frequency spectrum inverted by the signal processor is converted by a transmitter and retransmitted as signals with reception frequencies of the hand sets. By using this communication apparatus, a communication system with fixed duplex intervals can be employed with a simple configuration at a low cost, transmission/reception frequencies can be readily set and duplex conversation between hand sets can be achieved.
REFERENCES:
patent: 4802219 (1989-01-01), Tjerlund
patent: 4817141 (1989-03-01), Taguchi
patent: 5247567 (1993-09-01), Hirano
patent: 5509028 (1996-04-01), Marque-Pucheu
patent: 5757921 (1998-05-01), Okanobu et al.
patent: 5949878 (1999-09-01), Burdge et al.
patent: 5970410 (1999-10-01), Carney et al.
patent: 5982305 (1999-11-01), Taylor
patent: 4-180415 (1992-06-01), None
patent: 4-342346 (1992-11-01), None
patent: 7-273864 (1995-10-01), None
patent: 8-265211 (1996-10-01), None
patent: 11-196019 (1999-07-01), None
patent: WO 96/11555 (1996-04-01), None
Vuerinckx et al., “Design of a Very High Resolution Network Analyser”, Proceedings of the Instrumentation and Measurement Technology Conference, Orvine, CA, May 18-20, 1993, New York, pp. 470-475.
Rudi Vuerinckx et al.,; “Design Of A Very High Resolution Network Analyser”; IEEE, pp. 470-475, May 1993.
Office Action of EP App. No. 00125908.4-2411, dated Jan. 28, 2005.
Japanese Office Action mailed Nov. 2, 2004 in corresponding JP application No. 2000-072213.
Sawa Kazuhiro
Toda Manabu
Kim Kevin
Nixon & Vanderhye PC
Sharp Kabushiki Kaisha
LandOfFree
Communication apparatus, frequency spectrum inversion method... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Communication apparatus, frequency spectrum inversion method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communication apparatus, frequency spectrum inversion method... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3603848