Communication terminal equipment
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United States of America Patent
Stats
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Jan 9, 1996
Grant Date -
N/A
app pub date -
May 18, 1992
filing date -
May 20, 1991
priority date (Note) -
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Importance
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Abstract
A telephone set includes an audio system circuit and a data system circuit connected to a data terminal equipment having a data communication function in and an oral communication function. The telephone set includes a power supply circuit connected to a switching system through a telephone line and a current limiting portion for controlling connection between the data system circuit and the power supply circuit. When connection between the telephone set and the switching system is established through the line, power supply to the telephone set from the switching system through the line. The power is only supplied to the telephone set only via the line and the supplied power is further provided separately to the audio system circuit and the data system circuit through the power supply circuit. After the line connection is established, if a short-circuit occurs in the data terminal equipment, the current limiting portion cuts off a power supply path from the power supply circuit to the data system circuit. In this instance, only the power supply to the data system circuit is cut off. Power supply to the audio system circuit is maintained so that the oral communication function is not disabled and the availability of the telephone set is enhanced.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
SHARP KABUSHIKI KAISHA | 1 TAKUMI-CHO SAKAI-KU SAKAI CITY OSAKA 590-8522 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Yuyama, Osamu | Chiba, JP | 1 | 85 |
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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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