James R Springer

US Patent:

20130320096, Dec 5, 2013

Filed:

Jun 5, 2012

Appl. No.:

13/488765

Inventors:

James SPRINGER - Colorado Springs CO, US
David A. KAMP - Monument CO, US

Assignee:

EM Microelectronic-Marin S.A. - Marin

International Classification:

G06K 19/073

US Classification:

235492

Abstract:

An RFID transponder chip includes at least one antenna to pick-up and transmit radio-frequency signals, a rectifier to store charge on at least one capacitor at a rectified voltage from the picked-up radio-frequency signals, a power-on reset circuit to maintain a logic unit in a reset state if the rectified voltage level is less than a power-on reset or wake-up voltage of the power-on reset circuit for operating the logic unit. The RFID transponder chip further includes a non-volatile memory, in which are stored one or several trim values. Said non-volatile memory is directly connected to the power-on reset circuit to be able to provide at least one trim value to trim the power-on reset circuit at a rectified voltage level below a wake-up voltage level.

US Patent:

20220180079, Jun 9, 2022

Filed:

Sep 29, 2021

Appl. No.:

17/488752

Inventors:

- Marin, CH
James SPRINGER - Colorado Springs CO, US

Assignee:

EM Microelectronic-Marin SA - Marin

International Classification:

G06K 7/10
G06F 7/58

Abstract:

A method for providing identification and access with respect to a passive radio-frequency tag in a tag population, including, receiving a command for initiating an inventory round or a command for initiating a tag access, the command including, as a parameter, a number including an identifier of a reader, generating a 16-bit value referred to as first or second binding handle, the first or second binding handle including N juxtaposed bits forming the reader identifier, backscattering the first or second binding handle, receiving an ACK command, analyzing the identification parameter of the ACK command, and in a case where the identification parameter includes the reader identifier then ignoring the ACK command, only tags having the selected inventoried flag value for the session number are inventoried, the first initiating command only including the same inventoried flag for every inventoried tags during a session and wherein the at least other inventoried flag value is never used during the session.

US Patent:

20170180916, Jun 22, 2017

Filed:

Dec 18, 2015

Appl. No.:

14/974168

Inventors:

- Marin, CH
Marc MORIN - Colorado Springs CO, US
James Springer - Colorado Springs CO, US

Assignee:

EM Microelectronic-Marin SA - Marin

International Classification:

H04W 4/00
H04W 72/08
H04W 72/04

Abstract:

A method for transmitting a beacon message, the method generating, with a beacon generating device at least one beacon message, wherein the at least one beacon message is defined by a beacon message format, wherein the beacon message format comprises a preamble field, an access address field, a protocol data unit (PDU) field and a cyclic redundancy check (CRC) field, wherein the PDU field comprises at least one electronic product code (EPC) encoded EPC-PDU field, and transmitting, with the beacon generating device, the at least one beacon message using a Bluetooth Low Energy (BLE) wireless communication protocol to a transmission area within a transmission range of the beacon generating device for reception by one or more beacon receiving devices located in the transmission area.

US Patent:

20160292557, Oct 6, 2016

Filed:

Apr 2, 2015

Appl. No.:

14/677174

Inventors:

- Marin, CH
Jan KUBIS - Praha 4, CZ
James SPRINGER - Colorado Springs CO, US

Assignee:

EM Microelectronic-Marin S.A. - Marin

International Classification:

G06K 19/07

Abstract:

The invention concerns a multi-frequency transponder for communicating at a first frequency according to a first communication protocol and at a second different frequency according to a second communication protocol. The transponder comprises a first physical memory for storing a first data of the first communication protocol; a second physical memory for storing a second data, different from the first data, of the second communication protocol; and a logic unit for accessing the first and second physical memories. The logic unit comprises a first control unit for handling communications according to the first protocol, and a second control unit for handling communications according to the second protocol. The transponder comprises a mapping memory to store a logical memory map of the first or second physical memories. The logical memory map comprises mapping information for the first or second control unit to access data items in first and second physical memories.