US5848150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passive distributed filter system and method
Assignee: RPX Corp
•
Filing: 1997-02-26
•
Granted: 1998-12-08
•
Expires: 2017-02-26
Abstract
Abstract A plurality of passive distributed POTS filters (DPF) are associated with a respective plurality of POTS communications devices and decouple a POTS channel from a telephone connection, while permitting and not interfering with a second communications channel (e.g., DSL, ADSL, SDSL, RADSL, VADSL, etc.) on the telephone connection that is utilized by a modem. In architecture, the DPF system includes a plurality of POTS communications devices, such as telephones, and a plurality of the DPFs corresponding respectively with and connecting each of the POTS communications devices to the telephone connection. Each of the DPFs comprise an automatic control mechanism and a POTS filter. The automatic control mechanism is configured to isolate the POTS filter when a respective POTS communications device is on-hook. Each DPF is configured to permit POTS communications over a POTS channel on the telephone connection with the respective POTS communications device when the POTS communications device is off-hook. Furthermore, a second communications device, such as a DSL (e.g., ADSL, SDSL, RADSL, VADSL, etc.) communications device, is connected to the telephone connection and communicates signals over a second channel. The POTS and second channel are communicated over the telephone connection concurrently without appreciable interference.
Inventors
- 👤 Thomas J. Bingel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:28
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/06; H04M11/062
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
89 words
A passive distributed filter for enabling decoupling of first and second simultaneous communications channels on a telephone connection, comprising: a first channel filter configured to decouple a first channel from a combined signal having said first channel and a second channel on said telephone connection; and an automatic control mechanism configured to isolate said first channel filter from said telephone connection when a first channel device connected thereto is on-hook and configured to interface said first channel filter with said telephone connection when said first channel device is off-hook.
Claim 2
Dependent Claim
89 words
A passive distributed filter for enabling decoupling of first and second simultaneous communications channels on a telephone connection, comprising: a first channel filter configured to decouple a first channel from a combined signal having said first channel and a second channel on said telephone connection; and an automatic control mechanism configured to isolate said first channel filter from said telephone connection when a first channel device connected thereto is on-hook and configured to interface said first channel filter with said telephone connection when said first channel device is off-hook.
Claim 3
Dependent Claim
22 words
The filter of claim 1, wherein said first channel filter is a POTS filter and said first channel is a POTS channel.
Claim 4
Dependent Claim
15 words
The filter of claim 1, wherein said first and second channels utilize different frequency ranges.
Claim 5
Dependent Claim
36 words
The filter of claim 1, wherein said first channel filter comprises a balanced 5 th order Chebyshev filter with a tuning circuit configured to enhance telephone sidetone response between about 1 KHz and about 3 KHz.
Claim 6
Dependent Claim
45 words
The filter of claim 1, wherein said first channel filter comprises: cascaded first and second inductance circuits on each of tip and ring connections; and a capacitance circuit in parallel with each second inductance circuit and configured to resonate with a corresponding second inductance circuit.
Claim 7
Dependent Claim
16 words
The filter of claim 2, wherein said second channel is a digital subscriber line (DSL) channel.
Claim 8
Dependent Claim
21 words
The filter of claim 5, wherein each of said first and second inductance circuits comprise a pair of mutually coupled inductors.
Claim 9
Dependent Claim
19 words
The system of claim 1, wherein said automatic control mechanism includes parallel opposing diodes connected to said telephone connection.
Claim 10
Dependent Claim
81 words
A telephone for connecting to a telephone connection having a POTS channel combined with a second communications channel, comprising: a POTS filter configured to decouple said POTS channel from a combined signal having said POTS channel and said second communications channel on said telephone connection; and an automatic control mechanism configured to isolate said POTS filter from said telephone connection when said telephone is on-hook and configured to interface said POTS filter with said telephone connection when said telephone is off-hook.
Claim 11
Dependent Claim
81 words
A telephone for connecting to a telephone connection having a POTS channel combined with a second communications channel, comprising: a POTS filter configured to decouple said POTS channel from a combined signal having said POTS channel and said second communications channel on said telephone connection; and an automatic control mechanism configured to isolate said POTS filter from said telephone connection when said telephone is on-hook and configured to interface said POTS filter with said telephone connection when said telephone is off-hook.
Claim 12
Dependent Claim
153 words
A distributed filter apparatus for connecting a POTS communication device to a telephone connection having a POTS channel and a second communications channel and for decoupling the POTS channel, comprising: a housing with first and second ports, said first port adapted for connection to said telephone connection and said second port adapted for connection to said POTS communication device; a POTS filter within said housing and connected to said second port, said POTS filter configured to decouple said POTS channel from a combined signal having said POTS channel and said second communications channel on said telephone connection; and an automatic control mechanism within said housing and connecting said POTS filter and said first port, said automatic control mechanism configured to isolate said POTS filter from said telephone connection when said POTS communications device is on-hook and configured to interface said POTS filter with said telephone connection when said POTS communications device is off-hook.
Claim 13
Dependent Claim
153 words
A distributed filter apparatus for connecting a POTS communication device to a telephone connection having a POTS channel and a second communications channel and for decoupling the POTS channel, comprising: a housing with first and second ports, said first port adapted for connection to said telephone connection and said second port adapted for connection to said POTS communication device; a POTS filter within said housing and connected to said second port, said POTS filter configured to decouple said POTS channel from a combined signal having said POTS channel and said second communications channel on said telephone connection; and an automatic control mechanism within said housing and connecting said POTS filter and said first port, said automatic control mechanism configured to isolate said POTS filter from said telephone connection when said POTS communications device is on-hook and configured to interface said POTS filter with said telephone connection when said POTS communications device is off-hook.
Claim 14
Dependent Claim
32 words
The apparatus of claim 10, further comprising a third port associated with said housing configured to connect a second communications device adapted to utilize said second communications channel with said telephone connection.
Claim 15
Dependent Claim
123 words
A passive distributed filter system for enabling decoupling of first and second communications channels on a telephone connection, comprising: a plurality of first communications devices; a plurality of distributed filters corresponding respectively with and connecting each of said first communications devices to said telephone connection, each said distributed filter comprising an automatic control mechanism and a first channel filter, said automatic control mechanism configured to isolate said first channel filter when a respective first communications device is inactive, said distributed filter configured to interface communications on a first channel on said telephone connection with said respective first communications device when said first communications device is active; and a second communications device connected to said telephone connection and communicating signals over a second channel.
Claim 16
Dependent Claim
123 words
A passive distributed filter system for enabling decoupling of first and second communications channels on a telephone connection, comprising: a plurality of first communications devices; a plurality of distributed filters corresponding respectively with and connecting each of said first communications devices to said telephone connection, each said distributed filter comprising an automatic control mechanism and a first channel filter, said automatic control mechanism configured to isolate said first channel filter when a respective first communications device is inactive, said distributed filter configured to interface communications on a first channel on said telephone connection with said respective first communications device when said first communications device is active; and a second communications device connected to said telephone connection and communicating signals over a second channel.
Claim 17
Dependent Claim
14 words
The system of claim 12, wherein said first channel filter is a POTS filter.
Claim 18
Dependent Claim
21 words
The system of claim 12, wherein said first channel is a POTS channel and said second channel is a DSL channel.
Claim 19
Dependent Claim
15 words
The system of claim 12, wherein said first and second channels utilize different frequency ranges.
Claim 20
Dependent Claim
35 words
The system of claim 12, wherein said first channel filter comprises a balanced 5 th order Chebyshev filter with a tuning circuit configured to enhance frequency response between about 1 KHz and about 3 KHz.
Claim 21
Dependent Claim
45 words
The system of claim 12, wherein said first channel filter comprises: cascaded first and second inductance circuits on each of tip and ring connections; and a capacitance circuit in parallel with each second inductance circuit and configured to resonate with a corresponding second inductance circuit.
Claim 22
Dependent Claim
19 words
The system of claim 14, wherein said automatic control mechanism includes parallel opposing diodes connected to said telephone connection.
Claim 23
Dependent Claim
141 words
A passive distributed POTS filter system for enabling decoupling of a POTS channel and a second communications channel on a telephone connection, comprising: a plurality of POTS communications devices; a plurality of distributed POTS filters corresponding respectively with and connecting each of said POTS communications devices to said telephone connection, each said distributed POTS filter comprising an automatic control mechanism and a POTS filter, said automatic control mechanism configured to isolate said POTS filter when a respective POTS communications device is on-hook, said distributed POTS filter configured to permit POTS communications over a POTS channel on said telephone connection with said respective POTS communications device when said POTS communications device is off-hook; and a second communications device connected to said telephone connection and communicating signals over a second channel, said POTS and second channels being communicated over said telephone connection concurrently.
Claim 24
Dependent Claim
141 words
A passive distributed POTS filter system for enabling decoupling of a POTS channel and a second communications channel on a telephone connection, comprising: a plurality of POTS communications devices; a plurality of distributed POTS filters corresponding respectively with and connecting each of said POTS communications devices to said telephone connection, each said distributed POTS filter comprising an automatic control mechanism and a POTS filter, said automatic control mechanism configured to isolate said POTS filter when a respective POTS communications device is on-hook, said distributed POTS filter configured to permit POTS communications over a POTS channel on said telephone connection with said respective POTS communications device when said POTS communications device is off-hook; and a second communications device connected to said telephone connection and communicating signals over a second channel, said POTS and second channels being communicated over said telephone connection concurrently.
Claim 25
Dependent Claim
13 words
The system of claim 19, wherein said second channel is a DSL channel.
Claim 26
Dependent Claim
34 words
The system of claim 19, wherein said POTS filter comprises a balanced 5 th order Chebyshev filter with a tuning circuit configured to enhance frequency response between about 1 KHz and about 3 KHz.
Claim 27
Dependent Claim
44 words
The system of claim 19, wherein said POTS filter comprises: cascaded first and second inductance circuits on each of tip and ring connections; and a capacitance circuit in parallel with each second inductance circuit and configured to resonate with a corresponding second inductance circuit.
Claim 28
Independent Claim
165 words
A method for implementing a passive distributed filter system for enabling decoupling of first and second communications channels on a telephone connection at a plurality of sites, comprising the steps of: interfacing a plurality of first channel communications devices with said telephone connection using a distributed filter, said first channel communications devices configured to communicate over said telephone connection via a first channel, said distributed filter comprising an automatic control mechanism and a first channel filter, said automatic control mechanism configured to isolate said first channel filter when a respective first communications device is inactive, said distributed filter configured to interface communications on a first channel on said telephone connection with said respective first communications device when said first communications device is active; and interfacing a second channel communications device to said telephone connection, said second channel communications device configured to communicate over said telephone connection via a second channel; and permitting noninterfering simultaneous communications via said first and second channels over said telephone connection.
Claim 29
Independent Claim
165 words
A method for implementing a passive distributed filter system for enabling decoupling of first and second communications channels on a telephone connection at a plurality of sites, comprising the steps of: interfacing a plurality of first channel communications devices with said telephone connection using a distributed filter, said first channel communications devices configured to communicate over said telephone connection via a first channel, said distributed filter comprising an automatic control mechanism and a first channel filter, said automatic control mechanism configured to isolate said first channel filter when a respective first communications device is inactive, said distributed filter configured to interface communications on a first channel on said telephone connection with said respective first communications device when said first communications device is active; and interfacing a second channel communications device to said telephone connection, said second channel communications device configured to communicate over said telephone connection via a second channel; and permitting noninterfering simultaneous communications via said first and second channels over said telephone connection.
Claim 30
Dependent Claim
26 words
The method of claim 23, further comprising the step of using POTS filters as said first channel filters and a POTS channel as said first channel.
Claim 31
Dependent Claim
21 words
The method of claim 23, further comprising the step of utilizing different nonoverlapping frequency ranges for said first and second channels.
Claim 32
Dependent Claim
30 words
The method of claim 23, further comprising the steps of: utilizing a POTS channel as said first channel; and utilizing a digital subscriber line (DSL) channel as said second channel.
Claim 33
Dependent Claim
30 words
The method of claim 23, further comprising the step of utilizing a tuning circuit in said distributed filter to enhance frequency response between about 1 KHz and about 3 KHz.
References Cited (Backward Citations)
US3810033A
Cited
US4302629A
Cited
US4330687A
Cited
US4660218A
Cited
US4593389A
Cited
US4987586A
Cited
US4825465A
Cited
US4853949A
Cited
US5151972A
Cited
US5263081A
Cited
US5289538A
Cited
US5191305A
Cited
US5237591A
Cited
US5347566A
Cited
US5497417A
Cited
US5440335A
Cited
US5448635A
Cited
US5502760A
Cited
US5625677A
Cited
US5623543A
Cited
US5627885A
Cited
US5566239A
Cited
US5627081A
Cited
US5757803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-07 | 2002-06-08 | 2002-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-07 | 2006-06-08 | 2006-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-07 | 2010-06-08 | 2010-12-08 | $7700.00 | Window Closed / Lapsed |