Interactive video distribution systems – Video distribution system with upstream communication – Transmission network
Reexamination Certificate
2006-01-24
2006-01-24
Srivastava, Vivek (Department: 2743)
Interactive video distribution systems
Video distribution system with upstream communication
Transmission network
C725S149000, C725S150000
Reexamination Certificate
active
06990682
ABSTRACT:
A two-way CATV system is easy of maintenance, stable of a transmission quality and capable of restraining inter-modulation distortion noises of downstream RF signal carriers which are caused by non-linearity of electric contact members of coaxial connectors among upstream ingress noises becoming a problem when performing communications services by utilizing a CATV transmission path. The two-way CATV system comprises at least one bidirectional amplifier provided on a CATV transmission path for connecting a CATV center station to a subscriber home, a bias voltage superposing element for superposing, with a bias voltage, a downstream signal transmitted along a coaxial transmission path subordinate to an amplifier at the terminal among the bidirectional amplifiers, and a bias current adjusting load element, provided at the end of the coaxial transmission path, for setting the bias current corresponding to an application of the bias voltage superposed by the bias voltage superposing element.
REFERENCES:
patent: 3704419 (1972-11-01), Rheinfelder
patent: 3781703 (1973-12-01), Duty
patent: 3835393 (1974-09-01), Marron
patent: 3944742 (1976-03-01), Cunningham
patent: 4040045 (1977-08-01), Osborne et al.
patent: 4268858 (1981-05-01), Wood
patent: 4347403 (1982-08-01), Schwager et al.
patent: 4920533 (1990-04-01), Dufresne et al.
patent: 4924191 (1990-05-01), Erb et al.
patent: 5109286 (1992-04-01), West et al.
patent: 5255086 (1993-10-01), McMullan et al.
patent: 5343236 (1994-08-01), Koppe et al.
patent: 5505901 (1996-04-01), Harney et al.
patent: 5581801 (1996-12-01), Spriester et al.
patent: 5867763 (1999-02-01), Dean et al.
patent: 5898899 (1999-04-01), Ellis
patent: 5956075 (1999-09-01), Matsuo
patent: 5977831 (1999-11-01), Davis et al.
patent: 6054905 (2000-04-01), Gresko
patent: 6067441 (2000-05-01), Pan
patent: 6088569 (2000-07-01), Bach et al.
patent: 6530088 (2003-03-01), Brickell et al.
patent: 4-86084 (1992-03-01), None
patent: 4-296186 (1992-10-01), None
Sato Hiroaki
Sudo Yozo
Fujitsu Limited
Katten Muchin & Rosenman LLP
Srivastava Vivek
LandOfFree
Two-way CATV system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two-way CATV system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-way CATV system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3580699