Location finder, tracker, communication and remote control system

• US 20070032250A1
• Filed: 08/03/2005
• Published: 02/08/2007
• Est. Priority Date: 08/03/2005
• Status: Active Grant

• Current Assignee: Kamilo Feher
• Original Assignee: Kamilo Feher
• Inventors: Feher, Kamilo
• Granted Patent: US 7,260,369 B2
• Time in Patent Office: Days
• US Class Current: 455/456.200
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04M 11/04 with alarm systems, e.g. fire, police or burglar alarm systems
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 5/40 Modulation circuits
• CPC Class Codes: H04N 7/20 Adaptations for transmission via a GHz frequency band, e.g. via satellite
• CPC Class Codes: H04W 84/06 Airborne or Satellite Networks space-based or airborne stations H04B7/185

Abstract

A radio frequency identification (RFID) device, locator, wired and/or wireless communicator system comprising one or more than one antennas for receiving Radio Frequency (RF) signals from one or more RFID and or location determining and/or communication transmitters. The system has one or more receivers and demodulators for reception and demodulation of signals to baseband signals. A processor circuit processes the baseband signals and provides them to a cross-correlator circuit for cross-correlating the processed baseband signals and for generation of cross-correlated baseband signals. One or more modulators modulate the baseband signals and provide them to one or more transmitters. circuitry.

Claims

1. A location finder and communication system comprising:

two or more antennas or receive ports for receiving location determining signals from two or more location determining transmitters;

two or more receivers for processing of said location determining signal;

a selector or combiner device for selection or combining of one or more of the received location determining signals;

two or more communication transmitters;

connection circuitry for connecting the selected or the combined processed location determining signal to one or more communication transmitters;

a control and selection device for selection and connection of said location determining signals to one or more of said communication transmitters.

2. A location finder and modulation-demodulation (modem) format selectable (MFS) and bit rate agile (BRA) communication system comprising:

one or more receive ports for receiving location determining signals from one or more location determining transmitters;

one or more receivers and demodulators for reception and demodulation of said location determining signals to baseband signals;

a selector for selection of one or more of the baseband signals;

connection circuitry for connecting the selected baseband signal to one or a plurality of transmitters;

two or more communication transmitters;

a baseband signal interface circuit for interfacing and receiving the selected baseband signal;

a cross-correlator circuit for processing the baseband signal provided by said baseband interface circuit and for generation of cross-correlated baseband signals;

a shaped Time Constrained Signal (TCS) wavelet processor and bit rate agile Long Response (LR) filter [structure] for providing shaped and filtered signals in in-phase and quadrature-phase baseband channels;

a modulation-demodulation (modem) format selectable or code selectable baseband structure for providing either modem format selectable or code selectable cross-correlated processed and filtered in-phase and quadrature-phase baseband signals;

a modulator for quadrature modulation of the in-phase and quadrature-phase baseband signals;

one or more amplifiers comprising linear and/or nonlinear circuits for linear and/or non-linear amplification (NLA) of the modulated output signal of said quadrature modulator; and

a switch or level controller for selecting linearly or non-linearly amplified (NLA) modulated signals.

3. A location finding and communication system comprising:

two or more receive ports for receiving either location finding signals and or other than location finding signals from either one or more location determining transmitters or from one or more other than location finding signal transmitters;

one or more receivers and demodulators for receiving and demodulating said location finding signals to baseband signals;

one or more receivers and demodulators for receiving and demodulating said other than location finding signals to baseband signals;

a selector or combiner device for selection or combining of one or multiple baseband signals;

two or more signal modulators;

connection circuitry for connecting the selected or the combined single or multiple baseband signals to one or more of said signal modulators;

a signal processing network for receiving the baseband signals from the connection circuitry and for providing cross-correlated in-phase and quadrature-phase baseband signals at a first specified bit rate;

a signal processing network for receiving the selected or combined baseband signal and for providing a filtered signal at a second specified bit rate; and

a selector for selecting either the cross-correlated signals, the filtered signal, or both the cross-correlated signals and the filtered signal; and

connection for providing the selected signals to one or more modulators for signal modulation.

4. A radio frequency identification (RFID) locator and communicator system comprising:

one or more than one antennas for receiving Radio Frequency (RF) signals from one or more RFID and or location determining and or communication transmitters;

one or more receivers and demodulators for reception and demodulation of said signals to baseband signals;

a baseband signal processing network for receiving and processing said baseband signals;

a cross-correlator circuit for cross-correlating said processed baseband signals and for generation of cross-correlated baseband signals;

a shaped Time Constrained Signal (TCS) wavelet processor and bit rate agile Long Response (LR) filter structure for providing shaped and bit rate agile filtered signals in in-phase and quadrature-phase baseband channels; and

a modulator for quadrature modulation of the in-phase and quadrature-phase baseband signals.

5. In a Radio Frequency Identification (RFID) and communication system, the improvement comprising:

a receiver for reception and demodulation of RFID transmitted signals to baseband signals;

a cross-correlator for processing of said baseband signals for generation of cross-correlated in-phase and quadrature-phase baseband signals; and

a modulator for quadrature modulation of the in-phase and quadrature-phase baseband signals.

6. In a Radio Frequency Identification (RFID) and communication system, the improvement comprising:

one or more receivers and one or more demodulators for reception and demodulation of RFID transmitted signals to baseband signals and for providing said baseband signals to a spread spectrum baseband processor and subsequent quadrature modulator for quadrature modulation of baseband spread spectrum signals and to a baseband filter and subsequent modulator for modulation of the said baseband filtered signal; and

a connection circuit for providing either the spread spectrum modulated signal or the filtered modulated signal or both the modulated spread spectrum signal and the filtered modulated signals to one or more than one transmitters for transmission of the spread spectrum modulated and or the filtered modulated signals.

7. A location finder and Radio Frequency Identification (RFID) signal demodulation and modulation system comprising:

one or more antennas for receiving modulated Radio Frequency (RF) location finder and or Radio Frequency Identification (RFID) signals from one or more than one location finder and or RFID transmitters;

one or more receivers and demodulators for reception and demodulation of either said modulated RF or RFID signals to baseband signals;

a signal processing network for receiving said baseband signals and for providing cross-correlated in-phase and quadrature-phase baseband signals at a first specified bit rate;

a signal processing network for receiving said baseband signals and for providing a filtered signal at a second specified bit rate;

a selector for selecting either the cross-correlated signals or the filtered signal or both the cross-correlated signals and the filtered signal; and

a connection circuit for providing the selected signals to one or more modulators for signal modulation.

8. A location finder and communication system comprising:

two or more antennas for receiving modulated Radio Frequency (RF) location finder signals and communication signals from three or more location finder and communication system transmitters;

two or more receivers and demodulators for reception and demodulation of said modulated RF signals to baseband signals;

a signal processing network for receiving said baseband signals and for providing cross-correlated in-phase and quadrature-phase baseband signals at a first specified bit rate;

a signal processing network for receiving said baseband signals and for providing a filtered signal at a second specified bit rate;

a selector for selecting either the cross-correlated signals or the filtered signal or both the cross-correlated signals and the filtered signal;

a connection circuit for providing the selected signals to one or more than one modulators for signal modulation; and

a connection circuit for providing the modulated signals to two or more than two amplifiers and two or more than two antennas for amplification and transmission of the amplified modulated signals.

9. A location finder and communication system comprising:

one or more receive ports for receiving modulated location finder signals from one or more location finder and communication system transmitters;

one or more receivers and demodulators for reception and demodulation of said modulated signals to baseband signals;

a signal processing network for receiving said baseband signals and for providing cross-correlated in-phase and quadrature-phase baseband signals at a first specified bit rate;

a first quadrature modulator for quadrature modulating the cross-correlated signal;

a filter for filtering a second bit rate signal, said second bit rate signal having a different bit rate than the first bit rate signal, and providing a filtered baseband signal;

a second modulator for modulating the filtered baseband signal; and

switch circuitry for selecting and connecting either the cross-correlated first bit rate modulated signal or the filtered second bit rate modulated signal to a transmitter.

10. A barcode reader, location finder and communication system comprising:

a barcode reader for reading bar-coded information and processing said bar-coded information into electrical signals;

one or more receive ports for receiving modulated location finder signals from one or more location finder and communication system transmitters;

one or more receivers and demodulators for reception and demodulation of said modulated signals to baseband signals;

a signal processing network for receiving and processing said baseband signals and said bar-coded electrical signals and for providing in-phase and quadrature-phase baseband signals;

a filter for filtering said baseband signals and said bar-coded electrical signals and for providing filtered baseband signals and said bar-coded electrical signals;

a first quadrature modulator for quadrature modulating the in-phase and quadrature-phase baseband signals;

a second modulator for modulating the said filtered baseband and said bar-coded electrical signals; and

switch circuitry for selecting and connecting either the quadrature modulated or the filtered modulated signal to a transmitter.