Fred Louis Holmes

US Patent:

7139222, Nov 21, 2006

Filed:

Jan 20, 2005

Appl. No.:

10/905795

Inventors:

Kevin Baxter - North Hollywood CA, US
Ken Fisher - North Hollywood CA, US
Fred Holmes - North Hollywood CA, US

International Classification:

G01S 3/802

US Classification:

367127, 367124, 367129, 367906

Abstract:

A system and method for protecting sensor positions in an array of acoustic sensors which make up a gunfire locator system. The inventive system includes a purity of sensors and a host computer. Each sensor includes: a microphone for receiving acoustic information; a processor for processing acoustic information to detect an acoustic event and determine a time of arrival; a GPS receiver; an encryption module for encrypting transmitted sensor positions; and a network interface for transmitting sensor positions and times of arrival. The host computer includes: a network interface for receiving sensor transmissions; an encryption module for deciphering sensor positions; and a CPU.

US Patent:

7420878, Sep 2, 2008

Filed:

Jan 20, 2005

Appl. No.:

10/905760

Inventors:

Fred Holmes - North Hollywood CA, US
Ken Fisher - North Hollywood CA, US
Kevin Baxter - Norht Hollywood CA, US

International Classification:

G01S 5/18
G01S 5/14

US Classification:

367128, 34235703

Abstract:

A system and method for providing precision locations for sensors which make up an array of sensors in a gunshot detection system. In a preferred embodiment sensors employ a commercial GPS which reports a sensor position or a group of pseudoranges to GPS satellites. A server collects differential information from a differential node and, in one preferred embodiment, calculates a precision position for each sensor by adjusting the reported position or pseudoranges with the differential information. In another preferred embodiment differential information is sent from the host to individual sensors which calculate their own precision positions. Differential information may be latitude and longitude corrections, pseudorange corrections, ionospheric delay, GPS satellite clock drift, or other corrective term which will improve the accuracy of a sensor position.

US Patent:

7586812, Sep 8, 2009

Filed:

Oct 30, 2007

Appl. No.:

11/981827

Inventors:

Kevin Baxter - La Crescenta CA, US
Fred Holmes - Cleveland OK, US
Ken Fisher - North Hollywood CA, US

Assignee:

Shotspotter, Inc. - Mountain View CA

International Classification:

G01S 3/80

US Classification:

367127, 367906

Abstract:

A system and method for detecting, identifying, and fixing the location of the source of an acoustic event. The inventive system includes: a plurality of sensors dispersed at somewhat regular intervals throughout a monitored area; a communication network adapted to deliver information from the sensors to a host processor; and a process within the host processor for determining, from the absolute times of arrival of an event at two or more sensors, a position of the source of the event. Acoustic events are detected and analyzed at each sensor so that the sensor transmits over the network: an identifier for the sensor; an identifier for the type of event; and a precise absolute time of arrival of the event at the sensor. In a preferred embodiment, the system also identifies the type of weapon firing a gunshot.

US Patent:

7719428, May 18, 2010

Filed:

Oct 30, 2007

Appl. No.:

11/981619

Inventors:

Ken Fisher - North Hollywood CA, US
Kevin Baxter - Saugus CA, US
Fred Holmes - Cleveland OK, US

Assignee:

ShotSpotter, Inc. - Mountain View CA

International Classification:

G08B 23/00

US Classification:

3405731

Abstract:

Systems and methods are disclosed for data processing associated with acoustic events such as weapon fire. In one exemplary implementation, there is provided a method of processing communications associated with identifying or locating a weapon fire event. Moreover, the method may include processing communications from a plurality of sensors deployed across an area to be monitored, wherein the sensors are interconnected via a wireless network, processing signals communicated over the network from each sensor that detects the acoustic event, and determining a location of a source of the acoustic event as a function of time of arrival information and sensor location information. Other exemplary implementations may include using time of arrival data that is synchronous/universal among the sensors.

US Patent:

7960920, Jun 14, 2011

Filed:

Jul 1, 2009

Appl. No.:

12/496537

Inventors:

Fred H. Holmes - Van Nuys CA, US
Kevin C. Baxter - Van Nuys CA, US
Ken S. Fisher - North Hollywood CA, US

International Classification:

H03K 3/42

US Classification:

315291, 315 86, 327514

Abstract:

A battery operated LED lighting apparatus including: a battery outputting a battery voltage; a light emitting diode or array of light emitting diodes; and a power supply including a boost regulating circuit. The power supply being in communication with the battery and the light emitting diodes such that a constant voltage or constant current is supplied to the light emitting diodes as the battery discharges and the battery voltage falls below the output voltage. In a preferred embodiment the power supply further includes a buck regulator to maintain the proper output voltage when the battery voltage is greater than the output voltage.

US Patent:

8063773, Nov 22, 2011

Filed:

Oct 30, 2007

Appl. No.:

11/981697

Inventors:

Ken Fisher - North Hollywood CA, US
Kevin Baxter - La Crescenta CA, US
Fred Holmes - Cleveland OK, US

Assignee:

Shotspotter, Inc. - Mountain View CA

International Classification:

G08B 1/08

US Classification:

34053922

Abstract:

Systems and methods are disclosed for processing data associated with an acoustic event. In an exemplary implementation, there is provided a method of data processing including determining a location of an acoustic event and processing information associated with directing a camera towards the location. Moreover, one exemplary method may include processing information from and/or related to one or more sensors in an area to be monitored, processing data associated with the acoustic event, and determining a location of a source of the acoustic event as a function of the information from and/or related to the acoustic event. Further exemplary implementations include performing processing associated with providing instructions to direct a camera towards the determined location.

US Patent:

8299726, Oct 30, 2012

Filed:

May 5, 2011

Appl. No.:

13/102026

Inventors:

Fred H. Holmes - Van Nuys CA, US
Kevin C. Baxter - Van Nuys CA, US
Ken S. Fisher - North Hollywood CA, US

International Classification:

H03K 3/42

US Classification:

315291, 315 86, 327514

Abstract:

A battery operated LED lighting apparatus including: a battery outputting a battery voltage; a light emitting diode or array of light emitting diodes; and a power supply including a boost regulating circuit. The power supply being in communication with the battery and the light emitting diodes such that a constant voltage or constant current is supplied to the light emitting diodes as the battery discharges and the battery voltage falls below the output voltage. In a preferred embodiment the power supply further includes a buck regulator to maintain the proper output voltage when the battery voltage is greater than the output voltage.

US Patent:

20100123040, May 20, 2010

Filed:

Jun 18, 2009

Appl. No.:

12/487255

Inventors:

Kevin C. Baxter - Van Nuys CA, US
Ken S. Fisher - North Hollywoods CA, US
Fred Holmes - Van Nuys CA, US

International Classification:

B64B 1/40
B64B 1/44
B64D 47/02
B60Q 1/14

US Classification:

244 31, 362470, 315 77

Abstract:

A balloon-mounted light source includes an array of LEDs mounted on, and cooled by, a balloon structure filled with a lightweight gas such as helium. The LEDs are preferably mounted in long series arrangements with small gauge wire to minimize weight. They may be mounted on heatsinks that are dispersed in a mesh-like structure over the balloon. The LED circuitry may also be mounted on flexible circuit boards, which may be porous to reduce weight. The balloon may include an envelope compartment with a leak-resistant seal or zipper to allow the interior of the envelope to be accessed, and a pressure relief valve. The envelope of the balloon may be clear in the front in order to maximize the projection of light but reflective along the back and sides as to minimize spill. The balloon may take the form of a controllable dirigible.