1
Arno A Penzias: Fraud protection for card transactions. AT&T Bell Laboratories, Eugene J Rosenthal, Barry H Freedman, May 10, 1994: US05311594 (351 worldwide citation)

The problems of fraud in card transactions can be reduced by, after requiring the person engaged in the card transaction to initially identify himself, such as by supplying a card number, a) requesting, the person to supply as authentication information either 1) a randomly selected piece of prestor ...


2
Brian D Freeman, Bruce L Hanson, Mark M Rochkind, Lee B Strahs: Call connection technique. AT&T, Eugene J Rosenthal, June 27, 1995: US05428608 (231 worldwide citation)

In an environment in which simultaneous voice/data (SVD) modems are provisioned in the public switched network for separating and separately routing voice and data calls from users having SVD modems, at least one user who is already employing a first connection through an SVD modem provisioned in th ...


3
Bruce E McNair: Centralized security control system. AT&T Bell Laboratories, Eugene J Rosenthal, January 4, 1994: US05276444 (202 worldwide citation)

A central security control system (security system) interfaces between a plurality of requesters and a plurality of destinations such that it receives from the requesters requests for access to the destinations and communicates to the destinations a level of access that should be granted to a reques ...


4
Seyhan Civanlar, Vikram R Saksena: Method and apparatus for interconnecting ATM-attached hosts with telephone-network attached hosts. Lucent Technologies, AT&T, Eugene J Rosenthal, April 7, 1998: US05737333 (173 worldwide citation)

Communication, for example, via the internet protocol (IP), is facilitated among ATM-attached, LAN-attached and telephone-network-attached hosts, by a so-called "RouTel" and an address server. The RouTel provides gateway capabilities for connecting a) the telephone network, e.g., via 1) integrated s ...


5
Brenda B Amarant, William H Desmedt, David C McChristian, Robert M Neilon: Monitoring of charges debited to an account having an assigned limit. AT&T, Eugene J Rosenthal, Eli Weiss, September 12, 1995: US05450477 (155 worldwide citation)

Charges and balances assignable to a credit card account are controlled and monitored by assigning a purchase limit to the card. More specifically, when a card is used to pay for a telephone call on a telecommunication network, the validity of the card is verified in, for example, a network database ...


6
Gerard Joseph Foschini, Angel Lozano, Farrokh Rashid Farrokhi, Reinaldo A Valenzuela: Space-time processing for multiple-input, multiple-output, wireless systems. Lucent Technologies, Eugene J Rosenthal, May 3, 2005: US06888809 (140 worldwide citation)

In a MIMO system the signals transmitted from the various antennas are processed so as to improve the ability of the receiver to extract them from the received signal even in the face of some correlation. More specifically the number of bit streams that is transmitted simultaneously is adjusted, e.g ...


7
Ronald D Slusky: Telecommunications system subscriber profile updating. AT&T, Eugene J Rosenthal, Ronald D Slusky, August 8, 1995: US05440620 (128 worldwide citation)

Personal telephone number service is provided by an adjunct within a communications network to provide a number of functionalities, one of which allows associated subscribers to customize the way in which they receive telephone calls. In particular, each subscriber may dynamically specify a number o ...


8
Richard R Rosinski, Steven C Salimando: Telephone call billing system. AT&T, Eugene J Rosenthal, Barry H Freedman, January 10, 1995: US05381467 (127 worldwide citation)

The cost of a telephone toll call is shared by arranging the billing system of the telephone toll carrier to permit sharing of the period cost for at least one indivisible time period of a toll call. Accordingly, at least a portion of the period cost associated with at least one of the indivisible t ...


9
Rangarajan Aravind, Hsueh Ming Hang, Barin G Haskell, Atul Puri: Video signal quantization for an MPEG like coding environment. AT&T Bell Laboratories, Eugene J Rosenthal, Ronald D Slusky, May 25, 1993: US05214507 (123 worldwide citation)

A quantization parameter for use in encoding a region of an image is developed from a) a categorization of the region into one of a predetermined plurality of perceptual noise sensitivity (PNS) classes, b) a level of psycho-visual quality that can be achieved for the encoded version of the image, th ...


10
Randolph J Pilc, Roy P Weber: Method for secure access control. AT&T, Eugene J Rosenthal, April 23, 1996: US05510777 (121 worldwide citation)

A requester making a request for access to a destination is prompted to supply additional authentication information, beyond that which may be supplied by the requester in an attempt to meet a first level of security processing specified by the nature of the request itself, only if it is determined ...