Patent US4453183A successfully refreshed from Google Patents.
EP0146045A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Digital data transceiver for power line communications system
Assignee: General Electric Co
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Filing: 1984-11-29
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Granted: —
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Expires: 2004-11-29
Abstract
Abstract A transceiver circuit provides a transparent interface between one or more digital baseband signal generators, such as a microprocessor, and a broadband modulated carrier data bus, such as a power line communication system. A plurality of microprocessors can communicate with a single transceiver over a single conductor pair and a plurality of transceivers can communicate over a separate pair of conductors without the appearance of conflict.
Inventors
- 👤 Edward Keith Howell
- 👤 Thomas Edwin Anderson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 09:27
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/54; H04B3/542; H04B2203/00; H04B2203/54; H04B2203/5429; H04B2203/5454
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
74 words
A transceiver providing an interface for information exchange between a baseband bus and a modulated carrier broadband bus comprising: a transmitter and receiver; steering logic circuit means interconnecting said baseband bus with said transmitter and receiver for enabling and disabling said transmitter and receiver in accordance with direction of said information exchange between said baseband bus and broadband bus to provide said information exchange between said baseband bus and said broadband bus without conflict.
Claim 2
Dependent Claim
74 words
A transceiver providing an interface for information exchange between a baseband bus and a modulated carrier broadband bus comprising: a transmitter and receiver; steering logic circuit means interconnecting said baseband bus with said transmitter and receiver for enabling and disabling said transmitter and receiver in accordance with direction of said information exchange between said baseband bus and broadband bus to provide said information exchange between said baseband bus and said broadband bus without conflict.
Claim 3
Dependent Claim
11 words
The transceiver of claim 1 wherein said information comprises digital data.
Claim 4
Dependent Claim
105 words
The transceiver of claim 1 wherein said steering logic includes an open collector buffer connecting an output from said receiver to said baseband bus and a first logic gate having first and second inputs and an output, said first input connects with said baseband bus and said second input connects with said receiver output for enabling said transmitter and disabling said receiver when said baseband bus and said receiver output provides a first condition to said first logic gate, and for disabling said transmitter and enabling said receiver when said baseband bus and said receiver output provides a second condition to said first logic gate.
Claim 5
Dependent Claim
14 words
The transceiver of claim 3 wherein said first logic gate comprises an OR gate.
Claim 6
Dependent Claim
17 words
The transceiver of claim 3 further including inverter means intermediate said receiver- output and said logic gate.
Claim 7
Dependent Claim
13 words
The transceiver of claim 3 wherein said logic gate contains an inverted input.
Claim 8
Dependent Claim
36 words
The transceiver of claim 3 wherein said logic gate output connects with said receiver and said transmitter through a pulse stretcher for holding said transmitter enabled and said receiver disabled for a predetermined period of time.
Claim 9
Dependent Claim
14 words
The transceiver of claim 7 wherein said pulse stretcher includes a retriggerable monostable multivibrator.
Claim 10
Dependent Claim
49 words
The transceiver of claim 8 wherein said pulse stretcher further includes a second logic gate, a first terminal on said second logic gate connecting with said multivibrator first terminal and said first logic gate output, a second terminal on said second logic gate connecting with said multivibrator second terminal.
Claim 11
Dependent Claim
17 words
The transceiver of claim 9 wherein an output on said second logic gate connects with said receiver.
Claim 12
Dependent Claim
20 words
The transceiver of claim 9 wherein an output on said second logic gate connects with said transmitter through an inverter.
Claim 13
Dependent Claim
17 words
The transceiver of claim 9 wherein an output on said second logic gate connects with said transceiver.
Claim 14
Dependent Claim
15 words
The transceiver of claim 1 wherein said transmitter provides amplitude, frequency or phase modulated carrier.
Claim 15
Dependent Claim
116 words
A transceiver for providing a transparent interface between a digital baseband bus and a modulated carrier broadband bus comprising: a transmitter and receiver; steering logic means interconnecting said transmitter and said receiver with said baseband bus and including a buffer connecting an output from said receiver with said baseband bus, a logic gate having first and second inputs and an output, said gate first input being connected with said baseband bus and said gate second input being connected with said receiver output for determining signals on said baseband bus and said receiver output and for disabling said receiver and enabling said transmitter when said signals occur on said baseband bus and not on said receiver output.
Claim 16
Dependent Claim
116 words
A transceiver for providing a transparent interface between a digital baseband bus and a modulated carrier broadband bus comprising: a transmitter and receiver; steering logic means interconnecting said transmitter and said receiver with said baseband bus and including a buffer connecting an output from said receiver with said baseband bus, a logic gate having first and second inputs and an output, said gate first input being connected with said baseband bus and said gate second input being connected with said receiver output for determining signals on said baseband bus and said receiver output and for disabling said receiver and enabling said transmitter when said signals occur on said baseband bus and not on said receiver output.
Claim 17
Dependent Claim
18 words
The transceiver of claim 14 wherein said receiver is connected with said gate second input through an inverter.
Claim 18
Dependent Claim
42 words
The transceiver of claim 15 including a second inverter having a first terminal connected with said logic gate output and with said transmitter for enabling said transmitter when said receiver is disabled and for disabling said transmitter when said receiver is enabled.
Claim 19
Dependent Claim
17 words
The transceiver of claim 14 wherein said transmitter provides ASK 100% modulated carrier to said broadband bus.
Claim 20
Dependent Claim
14 words
The transceiver of claim 14 wherein said buffer comprises a transistor or a diode.
Claim 21
Dependent Claim
13 words
The transceiver of claim 14 wherein said logic gate comprises an OR gate.
Claim 22
Dependent Claim
14 words
The transceiver of claim 14 wherein said gate second input is an inverted input.
Claim 23
Independent Claim
150 words
A method of connecting a transmitter and receiver between a digital baseband data bus and a modulated carrier broadband bus comprising the steps of: connecting an output of said receiver to said baseband bus through an open collector transistor for pulling said baseband data bus low when carrier on said broadband bus is in a first modulation state; connecting said receiver output and said baseband bus to first and second inputs of a logic gate for determining direction of data exchange between said baseband bus and said broadband bus; providing a pulse stretcher between an output from said logic gate and said transmitter to keep said transmitter in an enabled state during transmission of a message; and providing a complementary output signal from the output of said logic gate to said receiver to disable said receiver when said transmitter is enabled and enable said receiver when said transmitter is disabled.
Claim 24
Independent Claim
150 words
A method of connecting a transmitter and receiver between a digital baseband data bus and a modulated carrier broadband bus comprising the steps of: connecting an output of said receiver to said baseband bus through an open collector transistor for pulling said baseband data bus low when carrier on said broadband bus is in a first modulation state; connecting said receiver output and said baseband bus to first and second inputs of a logic gate for determining direction of data exchange between said baseband bus and said broadband bus; providing a pulse stretcher between an output from said logic gate and said transmitter to keep said transmitter in an enabled state during transmission of a message; and providing a complementary output signal from the output of said logic gate to said receiver to disable said receiver when said transmitter is enabled and enable said receiver when said transmitter is disabled.
Claim 25
Dependent Claim
15 words
The method of claim 21 wherein the carrier modulation is amplitude, frequency or phase modulation.
Claim 26
Independent Claim
118 words
A method of connecting a transmitter and receiver between a digital baseband data bus and a 100% amplitude modulated carrier broadband bus comprising the steps of : providing an open collector transistor between an output of said receiver and said baseband bus for pulling said baseband data bus low when carrier is present on said broadband bus; and connecting said baseband data bus to a logic gate first terminal and said receiver output to a second terminal on said logic gate for enabling said receiver and disabling said transmitter when said receiver output corresponds to said baseband bus, and for disabling said receiver and enabling said transmitter when said receiver output does not correspond to said baseband bus.
Claim 27
Independent Claim
118 words
A method of connecting a transmitter and receiver between a digital baseband data bus and a 100% amplitude modulated carrier broadband bus comprising the steps of : providing an open collector transistor between an output of said receiver and said baseband bus for pulling said baseband data bus low when carrier is present on said broadband bus; and connecting said baseband data bus to a logic gate first terminal and said receiver output to a second terminal on said logic gate for enabling said receiver and disabling said transmitter when said receiver output corresponds to said baseband bus, and for disabling said receiver and enabling said transmitter when said receiver output does not correspond to said baseband bus.
References Cited (Backward Citations)
No citation records indexed.
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