Steven A Frank

US Patent:

6472975, Oct 29, 2002

Filed:

Jun 20, 1994

Appl. No.:

08/262157

Inventors:

Michael L. Beigel - Corona CA
Nathaniel Polish - New York NY
Steven R. Frank - Golden CO
Robert E. Malm - Pacific Palisades CA

Assignee:

Avid Marketing, Inc. - Norco CA

International Classification:

H04Q 100

US Classification:

340 101, 3405722

Abstract:

The coil in the reader that is used to establish an alternating magnetic field is transformer-coupled through capacitors to a push-pull driving circuit consisting of four field-effect transistors connected in a bridge arrangement. The coil, capacitors, and coupling circuitry are maintained in a tuned condition by continually adjusting either the driving frequency, the coil inductance, or the capacitor capacitance during communications. A tag utilizes a coil to couple with the readers alternating magnetic field and a capacitor to resonate the coil, thereby extracting power from the field more efficiently. Transformer coupling of the coil and capacitor is utilized for improved impedance matching. The coil, capacitor, and coupling circuitry can be maintained in a tuned condition by continually adjusting either the coil inductance, or the capacitor capacitance during communications. Certain configurations of the system may require that tuning maintenance be discontinued during the transmission of data.

US Patent:

7737821, Jun 15, 2010

Filed:

Jul 8, 2002

Appl. No.:

10/064380

Inventors:

Michael L Beigel - Corona CA, US
Nathaniel Polish - New York NY, US
Steven R Frank - Golden CO, US
Robert E Malm - Pacific Palisades CA, US

Assignee:

Avid Identification Systems Inc. - Norco CA

International Classification:

H04Q 1/00

US Classification:

340 101, 3405721

Abstract:

The electronic identification system provides two-way communications between reader and tags using alternating magnetic fields established by the reader and tag. Communication is accomplished by utilizing either a one-step or a two-step modulation process in which the information to be communicated either modulates an alternating magnetic field directly or modulates a periodic signal which modulates an alternating magnetic field. The coil in the reader that is used to establish an alternating magnetic field is transformer-coupled through capacitors to a push-pull driving circuit consisting of four field-effect transistors connected in a bridge arrangement. The coil, capacitors, and coupling circuitry are maintained in a tuned condition by continually adjusting either the driving frequency, the coil inductance, or the capacitor capacitance during communications. A tag utilizes a coil to couple with the reader's alternating magnetic field and a capacitor to resonate the coil, thereby extracting power from the field more efficiently. Transformer coupling of the coil and capacitor is utilized for improved impedance matching.

US Patent:

20100182127, Jul 22, 2010

Filed:

Mar 28, 2010

Appl. No.:

12/748428

Inventors:

MICHAEL L. BEIGEL - Corona CA, US
Nathaniel Polish - New York NY, US
Steven R. Frank - Golden CO, US
Robert E. Malm - Pacific Palisades CA, US

International Classification:

H04Q 5/22

US Classification:

340 101

Abstract:

The electronic identification system provides two-way communications between reader and tags using alternating magnetic fields established by the reader and tag. Communication is accomplished by utilizing either a one-step or a two-step modulation process in which the information to be communicated either modulates an alternating magnetic field directly or modulates a periodic signal which modulates an alternating magnetic field. The coil in the reader that is used to establish an alternating magnetic field is transformer-coupled through capacitors to a push-pull driving circuit consisting of four field-effect transistors connected in a bridge arrangement. The coil, capacitors, and coupling circuitry are maintained in a tuned condition by continually adjusting either the driving frequency, the coil inductance, or the capacitor capacitance during communications. A tag utilizes a coil to couple with the reader's alternating magnetic field and a capacitor to resonate the coil, thereby extracting power from the field more efficiently. Transformer coupling of the coil and capacitor is utilized for improved impedance matching. The coil, capacitor, and coupling circuitry can be maintained in a tuned condition by continually adjusting either the coil inductance, or the capacitor capacitance during communications. Certain configurations of the system may require that tuning maintenance be discontinued during the transmission of data.

US Patent:

46226311, Nov 11, 1986

Filed:

Dec 27, 1983

Appl. No.:

6/567233

Inventors:

Steven J. Frank - Mountain View CA
J. Scott Merritt - Newark CA

Assignee:

Plexus Computers, Inc. - San Jose CA

International Classification:

G06F 1516

US Classification:

364200

Abstract:

A tightly coupled computer system which provides for data coherency and includes an addressable main memory for storing blocks of data, a plurality of processors for accessing the blocks of data, each of the processors having an addressable cache memory for storing a number of blocks of data, a bus for intercoupling the plurality of processors with the addressable main memory and for intercoupling each of the plurality of processors with any other of the plurality of processors, and wherein only one of the plurality of processors and addressable main memory is a current owner of an address of a block of data, wherein the current owner has the correct data for the owned address, and wherein the ownership of an address is dynamically changeable among the addressable main memory and the plurality of processors.

US Patent:

20170259090, Sep 14, 2017

Filed:

Mar 8, 2017

Appl. No.:

15/452837

Inventors:

Vince J. GAINES - , US
Steven M. FRANK - Suwanee GA, US

International Classification:

A62B 35/00
F16M 13/02

Abstract:

A frame, one or more wheels rotationally attached to the frame, two or more end feet attached to opposite ends of the frame, one or more end safety tether attachments, and a flip-pole attachment. The frame straddles the roof peak so the end feet are stably positioned on opposite roof surfaces. The wheels enable the device, when flipped to its inverted position, to be rolled up and down the roof for installation and removal. The flip-pole attachment enables attachment of a flip pole for use in installing and removing the device from a ladder. And the end tether attachments enable workers to couple their safety tethers to the secured device so that if they fall their fall will be arrested for safety. In typical embodiments, an outrigger assembly is included with peak-mounting side feet for nesting on the roof peak and with side tether attachments for side attachment.