1
Gerald V Piosenka, Ronald V Chandos: Unforgeable personal identification system. Motorola, Frank J Bogacz, February 12, 1991: US04993068 (843 worldwide citation)

An unforgeable personal identification system for identifying users at remote access control sites. The unforgeable personal identification system generates one-way encrypted versions of physically immutable identification credentials (facial photo, retinal scan, voice and finger prints). These cred ...


2
Gerald V Piosenka, Thomas M Fox, Kenneth H Schmidt: Solar cell powered smart card with integrated display and interface keypad. Motorola, Bradley J Botsch, July 7, 1998: US05777903 (281 worldwide citation)

A smart card (50) transfers information between the smart card and an external system (24) while having the capability of being accessed by a user. The smart card includes a microprocessing unit (MPU) (18) for executing instructions stored in memory, a display (28), coupled to the MPU, for displayin ...


3
Gerald V Piosenka, Peter J Leahy: Auto-focusing optical apparatus. Motorola, Eugene A Parsons, October 25, 1994: US05359444 (174 worldwide citation)

Eyeglasses including lenses that contain liquid crystal nematic materials with variable refractive indexes. A voltage is applied across the materials to change the refractive index in accordance with a measured distance so that the lenses are always automatically focused as the operator looks at obj ...


4
Gerald V Piosenka, David M Harrison, Ronald V Chandos: Tamperproof arrangement for an integrated circuit device. Motorola, Frank J Bogacz, April 11, 1995: US05406630 (168 worldwide citation)

A tamperproof arrangement for an integrated circuit device. The arrangement includes a package and lid fabricated of heavy metals to prevent X-radiation or infrared detection of circuit operation. Sensors and control circuitry are located on the integrated circuit die itself which detect increased t ...


5
Gerald V Piosenka, David M Harrison, Ronald V Chandos: Tamperproof arrangement for an integrated circuit device. Motorola, Frank J Bogacz, February 14, 1995: US05389738 (119 worldwide citation)

A tamperproof arrangement for an integrated circuit device. The arrangement includes a package and lid fabricated of heavy metals to prevent X-radiation or infrared detection of circuit operation. Sensors and control circuitry are located on the integrated circuit die itself which detect increased t ...


6
Gerald V Piosenka, William R Worger, Michael A Savage: Electronic keying scheme for locking data. Motorola, Frank J Bogacz, July 24, 1990: US04944008 (77 worldwide citation)

A data locking system which modifies data in accordance with a renewable key variable derived from the exclusive ORing of a pseudorandom combination number from an external source means with an altered key variable.


7
Gerald V Piosenka, Barry B Mead: Secure microprocessor. Motorola, Raymond J Warren, July 1, 1986: US04598170 (39 worldwide citation)

An apparatus and method is disclosed for the protection of computer programs through the use of the principles of conditional inversion and permutation. These security features are designed as part of the chip in a fashion to minimize the changes required to any existing microprocessor design and to ...


8
Barry B Mead, Gerald V Piosenka: Quasi parallel cyclic redundancy checker. Motorola, Raymond J Warren, June 3, 1986: US04593393 (28 worldwide citation)

Method and apparatus for operating a CRC in a parallel, quasi parallel or serial fashion. The device allows all the bits in a word to be read and loaded into the cyclic redundancy checker (CRC) register in one clock cycle putting it in sync with the rest of the system. The CRC consists of a set of l ...


9
Gerald V Piosenka, Barry B Mead: Digital decorrelating random data generator. Motorola, Raymond J Warren, September 9, 1986: US04611183 (16 worldwide citation)

An apparatus and method is disclosed that provides a random data generator that is less susceptible to error sources resulting from negative feedback biasing. This invention utilizes a shift register and a multiplexer, controlled by the shift register, to provide the feedback to an amplifier. This i ...


10
Gerald V Piosenka: Precision digital random data generator. Motorola, Eugene A Parsons, July 26, 1983: US04395703 (12 worldwide citation)

A precision digital random data generator comprising a matched pair of D-type flip-flops, a differential amplifier for comparing integrated outputs of the flip-flops, provisions for a noisy analog input of the general type (n)t feeding one input of the comparator with the output of the comparator fe ...