US5440335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for delivering passband and telephony signals in a coaxial cable network
Assignee: Comcast MO Group Inc
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Filing: 1993-05-28
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Granted: 1995-08-08
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Expires: 2013-05-28
Abstract
Abstract A method and apparatus for delivering passband and telephony signals including signal combining and splitting. The method and device employs passive electronics in the form of L-filters, high pass filters and low pass filters to deliver baseband telephone communications and interactive video communications.
Inventors
- 👤 Gregory J. Beveridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:13
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/65; H04H20/76; H04H20/77; H04H20/78; H04H20/79; H04H60/00; H04H60/76; H04H60/81; H04H60/93; H04H60/94; H04H60/96; H04H60/97; H04N; H04N7/00; H04N7/16; H04N7/173; H04N7/17345; H04N7/17354; H04Q; H04Q11/00; H04Q11/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
141 words
An apparatus for delivering video and baseband telephony signals to a subscriber on a coaxial cable network including a pair of coaxial cables comprising: a network interface; a baseband below passband unit connected to said network interface; a signal combiner operatively associated with said baseband below passband unit, said combiner including at least one pair of L-filters to allow baseband telephony signals to be added to passband video signals on said pair of coaxial cables; and a signal splitter connected to said signal combiner by said pair of coaxial cables, said splitter including a high pass filter and a low pass filter such that said high pass filter permits transmission of all passband signals and blocks all telephony signals to said subscriber and said low pass filter blocks all passband signals and permits transmission of all telephony signals to said subscriber.
Claim 2
Independent Claim
141 words
An apparatus for delivering video and baseband telephony signals to a subscriber on a coaxial cable network including a pair of coaxial cables comprising: a network interface; a baseband below passband unit connected to said network interface; a signal combiner operatively associated with said baseband below passband unit, said combiner including at least one pair of L-filters to allow baseband telephony signals to be added to passband video signals on said pair of coaxial cables; and a signal splitter connected to said signal combiner by said pair of coaxial cables, said splitter including a high pass filter and a low pass filter such that said high pass filter permits transmission of all passband signals and blocks all telephony signals to said subscriber and said low pass filter blocks all passband signals and permits transmission of all telephony signals to said subscriber.
Claim 3
Independent Claim
83 words
A method for delivering video and telephony signals to a subscriber on a coaxial cable network including a pair of coaxial cables comprising the steps of: combining passband video signals and baseband telephony signals on said pair of coaxial cables; splitting said signals from said pair of coaxial cables onto a pair of F-fitting coaxial connectors and an RJ-11 telephone jack; blocking all baseband telephony signals on said pair of F-fitting connector; and blocking all passband video signals on said RJ-11 telephone jack.
Claim 4
Independent Claim
83 words
A method for delivering video and telephony signals to a subscriber on a coaxial cable network including a pair of coaxial cables comprising the steps of: combining passband video signals and baseband telephony signals on said pair of coaxial cables; splitting said signals from said pair of coaxial cables onto a pair of F-fitting coaxial connectors and an RJ-11 telephone jack; blocking all baseband telephony signals on said pair of F-fitting connector; and blocking all passband video signals on said RJ-11 telephone jack.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-08-07 | 1999-02-06 | 1999-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-08-07 | 2003-02-06 | 2003-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-08-07 | 2007-02-06 | 2007-08-08 | $7700.00 | Window Closed / Lapsed |