Patent
Semiconductor switching device
Stephen W. Byatt
- 04 Dec 1992
92
TL;DR: In this article, the authors describe a two-terminal voltage sensitive device that switches from an open-circuit condition to a short-circuits condition at a fixed breakover voltage.
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Abstract: A semiconductor switching device that is suitable for use as a remote isolation device (RID) in telephone networks. The semiconductor switching device is a two-terminal voltage sensitive device that switches from an open-circuit condition to a short-circuit condition at a fixed breakover voltage, appears as an open-circuit below the breakover voltage, and appears as a short-circuit above the breakover voltage. When semiconductor switching devices are installed in a telephone network, they are held in their short-circuit condition by the network voltage supply and do not affect the normal operation of the network but will switch to their open-circuit condition if the network voltage supply is reduced to below the breakover voltage, and therefore, parts of the network may be isolated from each other by reducing the voltage supply. Isolation of the parts of the network from each other facilitates testing for maintenance purposes.
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Citations
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System for facilitating a transaction
Lydia Breck,Jessica Zoob,Glen Salow,Fred Bishop,William S. Schwarz,Elliot Glazer,David Johnstone,Katie Cunningham,Anant Nambiar,Jan Nunney Belt,Martin Wittwer,David Armes,Christina Chow +12 more
- 07 Mar 2001
TL;DR: In this paper, a system and method for facilitating a transaction using a secondary transaction number that is associated with a cardholder's primary account is presented, where the cardholder provides the secondary transaction numbers, often with limited-use conditions associated therewith, to a merchant to facilitate a more secure and confident transaction.
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TL;DR: In this article, a transporter-reader payment system includes a fob (102) including a transponder (114), and a RFID reader (104) for interrogating the trans ponder (102).
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TL;DR: In this paper, the authors present a method for facilitating the management of distinct data sets on a transaction device that are provided by distinct data set owners, wherein the distinct datasets may include differing formats.
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Blayn W. Beenau,David S. Bonalle,Seth W. Fields,William J. Gray,Carl Larkin,Joshua L. Montgomery,Peter D. Saunders +6 more
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TL;DR: In this paper, a transponder reader with a biometric sensor is used to detect biometric samples and a device for verifying the biometric data stored on databases, respectively.
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Lee J. Peart,Peter D. Saunders +1 more
- 23 Jul 2004
TL;DR: In this paper, a smartcard system for secure transaction completion in a contact or contactless environment is presented, which utilizes selection of processing applications based on the account issuer parameters and risk factors (stored on a smart card) and merchant system parameters and RISs (stayed on a merchant system database).
181
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Patent
Overvoltage protection means for protecting low power semiconductor components
Per Svedberg
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51
Patent
Telephone line fault locating device
Om Ahuja
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TL;DR: In this paper, a fault locating device for determining whether a problem exists on the customer side or the office side of a telephone line is presented, where a voltage and current sensitive switch is connected in series with each of the ring and tip lines near the customer's side.
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Patent
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Om Ahuja
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35
Patent
Semiconductor structure for protecting integrated circuit devices
Leslie R. Avery
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TL;DR: In this article, the authors describe a protection circuit which may be used in a television receiver to protect circuitry inside an integrated circuit from damage due to high voltage transients, where the protection circuit comprises a PNPN structure forming a silicon control rectifier and a resistive element integral to the SCR structure.
33
Patent
Semiconductor device for electrical overstress protection
Derek Colman,Vijay Pathak +1 more
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