Telephone line extension
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 9, 2004
Grant Date -
Dec 5, 2002
app pub date -
May 17, 2001
filing date -
May 17, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system comprising a base unit and a remote unit for transmitting telephonic data on AC power lines is disclosed. The base unit includes a transmitter section, a receiver section, a power line interface, a telephone line interface, a power supply, and a first microcontroller. The telephone line interface is coupled to a telephone line to apply the telephonic data signals to and receive signals from the telephone line. The telephone line interface has a ring detector, a muting circuit, and a hook switch. The transmitter is coupled to the telephone line interface and the power line interface. The transmitter has a modulator, an oscillator, an amplifier, and a filter. The receiver is coupled the telephone interface and the power line interface. The receiver has a filter, an amplifier, and a detector. The remote unit includes a transmitter section, a receiver section, a power line interface, a telephone interface, a power supply, and a second microcontroller. The telephone interface is coupled to a piece of telephone equipment to transmit the telephonic data signals to and receive signals from said telephone equipment. The telephone interface has a ring generator, a muting circuit, a tone generator, and an off-hook detector. The transmitter is coupled to the telephone interface and the power line interface. The transmitter has a modulator, an oscillator, an amplifier, and a filter. The receiver is coupled the telephone interface and the power line interface. The receiver has a filter, an amplifier, and a detector. The power supply provides at least one power output capable of powering a ringer circuit in the telephone equipment.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- GEMINI INDUSTRIES, INC.;CONRED ELECTRONICS LIMITED
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Murakoshi, Susumu | Kowloon, HK | 1 | 46 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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