System for locating a plurality of objects

• US 7,667,590 B1
• Filed: 06/26/2006
• Issued: 02/23/2010
• Est. Priority Date: 06/27/2005
• Status: Expired due to Fees

• Current Assignee: Gary Ryan, Linda Ryan
• Original Assignee: Gary Ryan, Linda Ryan
• Inventors: Ryan, Linda, Ryan, Gary
• Primary Examiner(s): Wu; Daniel
• Assistant Examiner(s): WILSON, BRIAN P
• Application Number:
  US11/474,758
• Time in Patent Office: 1,338 Days
• Field of Search: 340/539.1, 340/539.13
• US Class Current: 340/539.1
• CPC Class Codes: G08B 21/24 Reminder alarms, e.g. anti-loss alarms

Abstract

An object locating system includes a primary portable controller including controls and LEDs, a transceiver, a digital signal processor, and a memory. The memory includes programmable software instructions that cause the primary controller to emit search signals that have corresponding unique frequencies. A phase-locked loop frequency synthesizer circuit is coupled to the signal processor for comparing a feedback frequency of the search signals. Secondary controllers are removably attached to the objects. Each secondary controller includes a transceiver that has an antenna coupled thereto, a processor, and a memory including software instructions that cause the secondary controller to transmit a location signal upon verifying the identity of the corresponding search signal. The primary and each secondary controller memories are EEPROMs. A transducer is coupled to the processor and emits an audible and visual signal in response to receiving the search signal.

Claims

1. A wireless object locating system for finding a plurality of objects within a target zone, said wireless object locating system comprising:

a primary portable controller comprising

a plurality of controls and LEDs disposed on an outer surface thereof,

a transceiver,

a digital signal processor electrically coupled directly to said transceiver,

a memory electrically coupled directly to said digital signal processor, said memory including programmable software instructions that cause said primary controller to emit a plurality of search signals having corresponding unique frequencies respectively, and

a frequency synthesizer circuit electrically coupled directly to said digital signal processor; and

a plurality of secondary controllers directly and removably attached to the plurality of objects respectively, each of said secondary controllers comprising

a transceiver having an antenna electrically coupled thereto,

a processor operably coupled to said transceiver,

a memory electrically coupled directly to said processor, said memory including programmable software instructions that cause said secondary controller to transmit a location signal upon verifying the identity of said corresponding search signal, and

a transducer electrically coupled directly to said processor, said transducer emitting an audible and visual signal in response to receiving said search signal;

wherein said primary controller further comprises

means for simultaneously locating all of said plurality of secondary controllers such that the user is able to simultaneously and independently locate each of the objects during a single time period, said simultaneous locating means comprising

a point-to-multipoint network interface circuit electrically coupled directly to said frequency synthesizer circuit such that each of said search signals are sequentially transmitting within the target zone without causing interference between each of said search signals; and

an analog to digital converter electrically coupled directly to said transceiver, said converter receiving an analog user input from said controls and converting said analog user input to a digital user input prior to reaching said digital signal processor.

2. The system of claim 1, wherein said programmable software instructions of said primary controller memory execute a logic algorithm comprising the steps of:

a. identifying which ones of said controls have been depressed,

b. randomly associating a numerical value with each of said controls,

c. instructing said frequency synthesizing circuit to sequentially transmit said numerical value to said point-to-multi-point network interface circuit based upon an order in which said controls where activated,

d. detecting whether a corresponding one of said location signals has been received by said transceiver of said primary controller, and

e. canceling said numerical value associated with a corresponding one of said secondary controllers associated with said detected location signal.

3. The system of claim 1, wherein each of said secondary controllers comprises:

a tuned frequency circuit electrically coupled directly to said transceiver and said processor, said tuned frequency circuit for detecting and receiving one of said search signals when a predetermined frequency is detected within a defined range of said tuned frequency circuit.

4. The system of claim 3, wherein each of said secondary controllers further comprises:

a fastener directly connected thereto so that a user can removably affix said secondary controllers to the objects respectively.

5. A wireless object locating system for finding a plurality of objects within a target zone, said wireless object locating system comprising:

a primary portable controller comprising

a plurality of controls and LEDs disposed on an outer surface thereof,

a transceiver,

a digital signal processor electrically coupled directly to said transceiver,

a memory electrically coupled directly to said digital signal processor, said memory including programmable software instructions that cause said primary controller to emit a plurality of search signals having corresponding unique frequencies respectively, and

a frequency synthesizer circuit electrically coupled directly to said digital signal processor, wherein said frequency synthesizer circuit is a phase-locked loop frequency synthesizer for comparing a feedback frequency of said search signals; and

a plurality of secondary controllers directly and removably attached to the plurality of objects respectively, each of said secondary controllers comprising

a transceiver having an antenna electrically coupled thereto,

a processor operably coupled to said transceiver,

a memory electrically coupled directly to said processor, said memory including programmable software instructions that cause said secondary controller to transmit a location signal upon verifying the identity of said corresponding search signal, and

a transducer electrically coupled directly to said processor, said transducer emitting an audible and visual signal in response to receiving said search signal;

wherein said primary controller further comprises

means for simultaneously locating all of said plurality of secondary controllers such that the user is able to simultaneously and independently locate each of the objects during a single time period, said simultaneous locating means comprising

a point-to-multipoint network interface circuit electrically coupled directly to said frequency synthesizer circuit such that each of said search signals are sequentially transmitting within the target zone without causing interference between each of said search signals; and

an analog to digital converter electrically coupled directly to said transceiver, said converter receiving an analog user input from said controls and converting said analog user input to a digital user input prior to reaching said digital signal processor.

6. The system of claim 5, wherein said programmable software instructions of said primary controller memory execute a logic algorithm comprising the steps of:

a. identifying which ones of said controls have been depressed,

b. randomly associating a numerical value with each of said controls,

c. instructing said frequency synthesizing circuit to sequentially transmit said numerical value to said point-to-multi-point network interface circuit based upon an order in which said controls where activated,

d. detecting whether a corresponding one of said location signals has been received by said transceiver of said primary controller, and

e. cancelling said numerical value associated with a corresponding one of said secondary controllers associated with said detected location signal.

7. The system of claim 5, wherein each of said secondary controllers comprises:

a tuned frequency circuit electrically coupled directly to said transceiver and said processor, said tuned frequency circuit for detecting and receiving one of said search signals when a predetermined frequency is detected within a defined range of said tuned frequency circuit.

8. The system of claim 7, wherein each of said secondary controllers further comprises:

a fastener directly connected thereto so that a user can removably affix said secondary controllers to the objects respectively.

9. A wireless object locating system for finding a plurality of objects within a target zone, said wireless object locating system comprising:

a primary portable controller comprising

a plurality of controls and LEDs disposed on an outer surface thereof,

a transceiver,

a digital signal processor electrically coupled directly to said transceiver,

a memory electrically coupled directly to said digital signal processor, said memory including programmable software instructions that cause said primary controller to emit a plurality of search signals having corresponding unique frequencies respectively, and

a frequency synthesizer circuit electrically coupled directly to said digital signal processor, wherein said frequency synthesizer circuit is a phase-locked loop frequency synthesizer for comparing a feedback frequency of said search signals; and

a plurality of secondary controllers directly and removably attached to the plurality of objects respectively, each of said secondary controllers comprising

a transceiver having an antenna electrically coupled thereto,

a processor operably coupled to said transceiver,

a memory electrically coupled directly to said processor, said memory including programmable software instructions that cause said secondary controller to transmit a location signal upon verifying the identity of said corresponding search signal, wherein said primary controller memory and each of said secondary controller memories are EEPROMs, and

a transducer electrically coupled directly to said processor, said transducer emitting an audible and visual signal in response to receiving said search signal;

wherein said primary controller further comprises

means for simultaneously locating all of said plurality of secondary controllers such that the user is able to simultaneously and independently locate each of the objects during a single time period, said simultaneous locating means comprising

a point-to-multipoint network interface circuit electrically coupled directly to said frequency synthesizer circuit such that each of said search signals are sequentially transmitting within the target zone without causing interference between each of said search signals; and

an analog to digital converter electrically coupled directly to said transceiver, said converter receiving an analog user input from said controls and converting said analog user input to a digital user input prior to reaching said digital signal processor.

10. The system of claim 9, wherein said programmable software instructions of said primary controller memory execute a logic algorithm comprising the steps of:

a. identifying which ones of said controls have been depressed,

b. randomly associating a numerical value with each of said controls,

c. instructing said frequency synthesizing circuit to sequentially transmit said numerical value to said point-to-multi-point network interface circuit based upon an order in which said controls where activated,

d. detecting whether a corresponding one of said location signals has been received by said transceiver of said primary controller, and

e. cancelling said numerical value associated with a corresponding one of said secondary controllers associated with said detected location signal.

11. The system of claim 9, wherein each of said secondary controllers comprises:

a tuned frequency circuit electrically coupled directly to said transceiver and said processor, said tuned frequency circuit for detecting and receiving one of said search signals when a predetermined frequency is detected within a defined range of said tuned frequency circuit.

12. The system of claim 11, wherein each of said secondary controllers further comprises:

a fastener directly connected thereto so that a user can removably affix said secondary controllers to the objects respectively.