Patent US4443786A successfully refreshed from Google Patents.
US4443786A
Expired / Lapsed
US
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Data transmission system employing wire and wireless transmission paths
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1981-09-21
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Granted: 1984-04-17
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Expires: 2001-09-21
Abstract
Abstract A data transmission system using an alternating mains supply for a signal transmission path including a movable module having a data input device, a first transmitter coupled to the data input device for transmitting a first wireless transmission of data fed into the input device, a first receiver for receiving a second wireless transmission of data and an output device coupled to the first receiver for putting out data corresponding to the received second wireless transmission. The system additionally includes a fixed module arranged to be connected to the mains supply and including a second receiver for receiving the first wireless transmissions, a line driver coupled to the second receiver for feeding signals into the mains supply corresponding to the data received by the second receiver, a signal receiver for receiving signals from the mains supply and a second transmitter coupled to the signal receiver for transmitting the second wireless transmission of data corresponding to the data received by the signal receiver.
Inventors
- 👤 Heinz Hammerling
- 👤 Werner Schairer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:55
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/54; H04B3/542; H04B2203/00; H04B2203/54; H04B2203/5404; H04B2203/5416; H04B2203/5429; H04B2203/5441; H04B2203/545; H04B2203/5462; H04B2203/5483
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
82 words
A data transmission system using alternating mains supply as its transmission path, wherein a fixed module is provided at certain locations at which signals are to be fed in or removed from the mains supply; a second movable module is provided which receives the signals in a suitable form from the fixed module or transmits them thereto, and comprising an infra-red radiation emitting component and an infra-red radiation sensitive component for each said module for wireless infra-red data transmission between said modules.
Claim 2
Dependent Claim
82 words
A data transmission system using alternating mains supply as its transmission path, wherein a fixed module is provided at certain locations at which signals are to be fed in or removed from the mains supply; a second movable module is provided which receives the signals in a suitable form from the fixed module or transmits them thereto, and comprising an infra-red radiation emitting component and an infra-red radiation sensitive component for each said module for wireless infra-red data transmission between said modules.
Claim 3
Dependent Claim
41 words
A data transmission system as defined in claim 1, wherein said system comprises an intercommunication arrangement for use as a control system for associated electrical devices or data transmission systems or as a transmission avenue for the values of associated sensors.
Claim 4
Dependent Claim
87 words
A data transmission system as defined in claim 1, wherein said fixed module includes a line driver coupled to the infra-red radiation sensitive component associated with said fixed module for feeding the signals received by said associated infra-red radiation sensitive component into said mains supply, a receiver for receiving signals from said mains supply, and a driving circuit coupled to said receiver and to the infra-red emitting component associated with said fixed module for driving said associated infra-red emitting component with the signals received by said receiver.
Claim 5
Dependent Claim
47 words
A data transmission system as defined in claim 3, wherein said fixed module includes a first code converter and an amplifier serially connected between said line driver and said associated infra-red radiation sensitive component, and a second code converter connected between said receiver and said driving circuit.
Claim 6
Dependent Claim
83 words
A data transmission system as defined in claim 1, wherein said movable module includes a signal input device, a driver circuit coupled to said signal input device and to the infra-red emitting component associated with said movable module for driving said associated infra-red emitting component with the signals from said signal input device, and an output device coupled to the infra-red sensitive component associated with said movable module for producing output signals corresponding to the signals received by said associated infra-red sensitive component.
Claim 7
Dependent Claim
49 words
A data transmission system as defined in claim 5, wherein said movable module includes a first code converter connected between said signal input device and said associated infra-red emitting component, and an amplifier and second code converter serially connected between said output device and said associated infra-red sensitive component.
Claim 8
Dependent Claim
16 words
A data transmission system as defined in claim 5, wherein said input device comprises a microphone.
Claim 9
Dependent Claim
16 words
A data transmission system as defined in claim 5, wherein said input device comprises a keyboard.
Claim 10
Dependent Claim
17 words
A data transmission system as defined in claim 5, wherein said output device comprises a display unit.
Claim 11
Dependent Claim
16 words
A data transmission system as defined in claim 5, wherein said output device comprises a printer.
Claim 12
Dependent Claim
18 words
A data transmission system as defined in claim 5, wherein said output device comprises a data processing system.
Claim 13
Dependent Claim
16 words
A data transmission system as defined in claim 5, wherein said output device comprises a loudspeaker.
Claim 14
Dependent Claim
67 words
A data transmission system for use on domestic mains supply comprising a fixed module for input and output of data into and from the mains supply and a movable module for transmitting signals to and receiving signals from said fixed module, wherein said fixed and movable modules each include an infra-red radiation emitting component and an infra-red radiation sensitive component for wireless infra-red transmission between said modules.
Claim 15
Dependent Claim
67 words
A data transmission system for use on domestic mains supply comprising a fixed module for input and output of data into and from the mains supply and a movable module for transmitting signals to and receiving signals from said fixed module, wherein said fixed and movable modules each include an infra-red radiation emitting component and an infra-red radiation sensitive component for wireless infra-red transmission between said modules.
Claim 16
Dependent Claim
187 words
A data transmission system using an alternating mains supply for a signal transmission path, said system comprising: a movable module including a data input device, a first infra-red emitting component coupled to said data input device for transmitting a first wireless transmission of infra-red signals representing data fed into said data input device, a first infra-red sensitive component for receiving a second wireless transmission of infra-red signals representing data and an output device coupled to said first infra-red radiation sensitive component for putting out data corresponding to the received second wireless transmission; and a fixed module arranged to be connected to the mains supply and including a second infra-red sensitive component for receiving the first wireless transmission, means coupled to said second infra-red sensitive component for feeding data into the mains supply corresponding to the data received by said second infra-red sensitive component, signal receiver means for receiving data from the mains supply and a second infra-red emitting component coupled to said signal receiver means for transmitting a second wireless transmission of infra-red signals representing data corresponding to the data received by a said signal receiver means.
Claim 17
Dependent Claim
187 words
A data transmission system using an alternating mains supply for a signal transmission path, said system comprising: a movable module including a data input device, a first infra-red emitting component coupled to said data input device for transmitting a first wireless transmission of infra-red signals representing data fed into said data input device, a first infra-red sensitive component for receiving a second wireless transmission of infra-red signals representing data and an output device coupled to said first infra-red radiation sensitive component for putting out data corresponding to the received second wireless transmission; and a fixed module arranged to be connected to the mains supply and including a second infra-red sensitive component for receiving the first wireless transmission, means coupled to said second infra-red sensitive component for feeding data into the mains supply corresponding to the data received by said second infra-red sensitive component, signal receiver means for receiving data from the mains supply and a second infra-red emitting component coupled to said signal receiver means for transmitting a second wireless transmission of infra-red signals representing data corresponding to the data received by a said signal receiver means.
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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) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |