Patent US5724168A successfully refreshed from Google Patents.
US5724168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wireless diffuse infrared LAN system
Assignee: Benhov GmbH LLC
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Filing: 1994-10-11
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Granted: 1998-03-03
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Expires: 2014-10-11
Abstract
Abstract A wireless diffuse infrared local area network communication system is provided for enclosed areas. The communication system includes a controller and a substantially omnidirectional infrared transceiver disposed on an inside walls of the enclosed area operatively interconnected with the controller. The system further includes a remote station and means, operatively coupled to the remote station, for transceiving a communicated signal with the substantially omnidirectional infrared transceiver.
Inventors
- 👤 Ellen L. Oschmann
- 👤 Jeffrey Peter Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:31
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/11; H04B10/114; H04B10/1149; H03; H03F; H03F3/00; H03F3/04; H03F3/08; H03F3/087; H04B10/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
A wireless diffuse infrared communication system for enclosed areas comprising: a controller; a substantially omnidirectional diffuse infrared transceiver disposed inside the enclosed area, operatively interconnected with the controller and simultaneously transmitting a diffuse infrared signal throughout the enclosed area; a portable remote station; and a floating photodiode amplifier circuit disposed within the remote station, for transceiving the diffuse communicated signal with the substantially omnidirectional diffuse infrared transceiver.
Claim 2
Dependent Claim
67 words
A wireless diffuse infrared communication system for enclosed areas comprising: a controller; a substantially omnidirectional diffuse infrared transceiver disposed inside the enclosed area, operatively interconnected with the controller and simultaneously transmitting a diffuse infrared signal throughout the enclosed area; a portable remote station; and a floating photodiode amplifier circuit disposed within the remote station, for transceiving the diffuse communicated signal with the substantially omnidirectional diffuse infrared transceiver.
Claim 3
Dependent Claim
110 words
A wireless diffuse infrared communication system for enclosed areas comprising: a controller; a substantially .omnidirectional diffuse infrared transceiver disposed inside the enclosed area operatively interconnected with the controller, including a photodiode for receiving diffuse infrared information, an radio frequency shield disposed over, and substantially enclosing the photodiode, and a floating photodiode amplifier operably interconnected with the photodiode; a portable remote station; and means disposed within the remote station for tranceiving a diffuse communicated signal with the substantially omnidirectional diffuse infrared transceiver, including a photodiode for receiving diffuse infrared information, an radio frequency shield disposed over, and substantially enclosing the photodiode, and a floating photodiode amplifier operably interconnected with the photodiode.
Claim 4
Dependent Claim
110 words
A wireless diffuse infrared communication system for enclosed areas comprising: a controller; a substantially .omnidirectional diffuse infrared transceiver disposed inside the enclosed area operatively interconnected with the controller, including a photodiode for receiving diffuse infrared information, an radio frequency shield disposed over, and substantially enclosing the photodiode, and a floating photodiode amplifier operably interconnected with the photodiode; a portable remote station; and means disposed within the remote station for tranceiving a diffuse communicated signal with the substantially omnidirectional diffuse infrared transceiver, including a photodiode for receiving diffuse infrared information, an radio frequency shield disposed over, and substantially enclosing the photodiode, and a floating photodiode amplifier operably interconnected with the photodiode.
Claim 5
Dependent Claim
67 words
A wireless diffuse infrared communication system for enclosed areas comprising: a controller; a substantially omnidirectional diffuse infrared transceiver disposed inside the enclosed area, operatively interconnected with the controller and simultaneously transmitting a diffuse infrared signal throughout the enclosed area; a portable remote station; a shielded photodiode shielded from radio frequency interference disposed in the portable remote station; and a floating photoconductor amplifier coupled to the shielded photodiode.
Claim 6
Dependent Claim
67 words
A wireless diffuse infrared communication system for enclosed areas comprising: a controller; a substantially omnidirectional diffuse infrared transceiver disposed inside the enclosed area, operatively interconnected with the controller and simultaneously transmitting a diffuse infrared signal throughout the enclosed area; a portable remote station; a shielded photodiode shielded from radio frequency interference disposed in the portable remote station; and a floating photoconductor amplifier coupled to the shielded photodiode.
Claim 7
Dependent Claim
168 words
A wireless diffuse infrared communication system for enclosed areas comprising: a controller; a substantially omnidirectional diffuse infrared transceiver disposed inside the enclosed area, operatively interconnected with the controller and simultaneously transmitting a diffuse infrared signal throughout the enclosed area; a first photodiode having an anode and a cathode disposed within the omnidirectional diffuse infrared transceiver; and a first non-inverting amplifier of substantially unity gain, with an input of the first non-inverting amplifier operably coupled with the cathode of the first photodiode through a coupling capacitor and an output of the first non-inverting amplifier operably coupled to an anode of the first photodiode; a portable remote station; a second photodiode having an anode and a cathode disposed within the portable remote station; and a second non-inverting amplifier of substantially unity gain, with an input of the second non-inverting amplifier operably coupled with the cathode of the second photodiode through a coupling capacitor and an output of the second non-inverting amplifier operably coupled to an anode of the second photodiode.
Claim 8
Dependent Claim
168 words
A wireless diffuse infrared communication system for enclosed areas comprising: a controller; a substantially omnidirectional diffuse infrared transceiver disposed inside the enclosed area, operatively interconnected with the controller and simultaneously transmitting a diffuse infrared signal throughout the enclosed area; a first photodiode having an anode and a cathode disposed within the omnidirectional diffuse infrared transceiver; and a first non-inverting amplifier of substantially unity gain, with an input of the first non-inverting amplifier operably coupled with the cathode of the first photodiode through a coupling capacitor and an output of the first non-inverting amplifier operably coupled to an anode of the first photodiode; a portable remote station; a second photodiode having an anode and a cathode disposed within the portable remote station; and a second non-inverting amplifier of substantially unity gain, with an input of the second non-inverting amplifier operably coupled with the cathode of the second photodiode through a coupling capacitor and an output of the second non-inverting amplifier operably coupled to an anode of the second photodiode.
Claim 9
Dependent Claim
27 words
The system of claim 4 further comprising a feedback resistor interposed within the interconnection between the output of the non-inverting amplifier and the anode of the photodiode.
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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) | 2001-03-02 | 2001-09-01 | 2002-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-02 | 2005-09-01 | 2006-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-02 | 2009-09-01 | 2010-03-03 | $7700.00 | Window Closed / Lapsed |