David B Bartholomew
Burglar Alarm in Salt Lake City, UT

6456192, Sep 24, 2002

Apr 19, 2000

09/553421

Scott R. Bullock - South Jordan UT
Ryan Hoobler - West Valley City UT
David Bartholomew - West Valley UT

Phonex Broadband Corporation - Midvale UT

H04M 1104

34031001, 34031002, 34031003, 375259

A system and method for detecting power line null frequencies and for adjusting the transmit frequency and transmit power to maximize the reliability and efficiency of the AC power line transmission link is described. This invention uses a programmable logic device in the transmitter, which transmits multiple frequencies to a receiver. The receiver detects and records the bit error rate and/or the received noise per frequency and communicates this information to the transmitter. When all desired frequencies have been transmitted and tested, the optimal frequency is identified or selected. Generally, the optimal frequency is the frequency requiring the lowest transmit power while maintaining an acceptable bit error rate or an acceptable noise level.

6567474, May 20, 2003

Mar 2, 1999

09/260868

Scott R. Bullock - South Jordan UT
Scott D. Smith - Murray UT
David B. Bartholomew - West Valley UT

Phonex Corporation - Midvale UT

H04L 2718

375279, 375271, 375273, 375283, 375329, 375330, 34031001, 34031002

A system for communicating signals between a transmitter and a receiver using digital modulation techniques is provided. This invention is particularly adapted to meet the requirements of power line communication. In one preferred embodiment of this invention the modulation technique is differential binary phase shift key modulation. This system provides a low cost, simple delay and multiply process for the modulation and demodulation of data. This system lends itself to an ASIC implementation, thereby further reducing the cost of the system while improving the reliability of the system in a noisy environment.

5530737, Jun 25, 1996

Mar 22, 1993

8/034086

David B. Bartholomew - West Valley City UT
A. Ray Ivie - Orem UT
Alma K. Schurig - Provo UT

Phonex Corporation - Midvale UT

H04M 1100

379 62

A method and system is provided for conducting secure power line carrier communications in full duplex over the power lines of a building. Power line carrier current telephone extension systems utilize 1) a single BASE unit per central office line (for interfacing line carrier signals with the central office line) and 2) one or more EXTENSION units, one for each extension phone set (for interfacing said line carrier signals with said extension phone sets). The method employs system control logic for providing A) multiple extension arbitration logic, B) privacy from eavesdropping and C) security from third party central office line capture by means of a digital messaging system in each base and extension unit utilizing a unique and matching security key (preamble) with each message instructing the system to change operating states, such as, A) during a conversation an extension unit may be put on hold so that a second matching extension can pick up the line, B) a base unit rings matching extension units to signal an incoming call or C) an outgoing call is initiated by a user taking a matching extension phone off hook to access the central office line. Matching of the random security codes may be initiated by the user. By this means unauthorized access to the central office line (especially for long distance calls) and eavesdropping by other users in the same building with similar line carrier telephone extension products is prohibited.

5852785, Dec 22, 1998

Apr 29, 1996

8/639508

David B. Bartholomew - West Valley City UT
A. Ray Ivie - Orem UT
Alma K. Schurig - Orem UT

H04Q 720

455561

A method and system is provided for conducting secure power line carrier communications in full duplex over the power lines of a building. Power line carrier current telephone extension systems utilize 1) a single BASE unit per central office line (for interfacing line carrier signals with the central office line) and 2) one or more EXTENSION units, one for each extension phone set (for interfacing said line carrier signals with said extension phone sets). The method employs system control logic for providing A) multiple extension arbitration logic, B) privacy from eavesdropping and C) security from third party central office line capture by means of a digital messaging system in each base and extension unit utilizing a unique and matching security key (preamble) with each message instructing the system to change operating states, such as, A) during a conversation an extension unit may be put on hold so that a second matching extension can pick up the line, B) a base unit rings matching extension units to signal an incoming call or C) an outgoing call is initiated by a user taking a matching extension phone off hook to access the central office line. Matching of the random security codes may be initiated by the user. By this means unauthorized access to the central office line (especially for long distance calls) and eavesdropping by other users in the same building with similar line carrier telephone extension products is prohibited.

5319634, Jun 7, 1994

Oct 7, 1991

7/773009

David B. Bartholomew - West Valley City UT
A. Ray Ivie - Orem UT
Alma K. Schurig - Provo UT

Phoenix Corporation - Midvale UT

H04B 7204, H04J 1300, H04J 316

370 18

A method and system for conducting multiple access simultaneous telephone communications in full duplex either over the power lines of a building or using RF transmission. It employs a combination of multiple access techniques selected from among the following: time division, code division, and frequency division. The following features result: a) security coding to prevent unauthorized access and eavesdropping, b) multiple simultaneous conversations through identical and closely coupled transmission media, c) non-interference to other communications systems and users, and d) processing gain for operating in noisy environments.

7810125, Oct 5, 2010

Apr 5, 2007

11/697123

David Bartholomew - West Valley City UT, US
Scott Smith - Murray UT, US
Alan Stettler - Murray UT, US

Phonex Broadband Corporation - Midvale UT

H04N 7/18, H04N 7/173, H04N 7/16, G05B 11/01

725106, 725 79, 725151, 34031011, 34031012, 34031016

A telephone link for set top box communication between the set top box and a central office is provided. This invention makes use of an AC power line to provide a communication channel between the set top box and the central office. The set top box is configured to include an interface, including coupling and modulation, between the set top box and the AC power line. A base unit, connected to the central office provides another interface configured to facilitate the coupling and modulation of signals between the central office and the AC power line.

5911119, Jun 8, 1999

Oct 15, 1996

8/729876

David B. Bartholomew - West Valley City UT
Scott R. Bullock - South Jordan UT
John M. Knab - Sandy UT

Phonex Corporation - Midvale UT

H04M 1100, H04Q 732

455402

A method and system for multiple access telephone communications is described. The system utilizes one or more base units connected to subscriber lines, and multiple extension units in communication with each base unit via building power lines. Secure multiple access coding is used to prevent eavesdropping and interference. Extension units may employ cordless telephone technology. Caller ID information transmitted with incoming telephone signals may be transmitted to extension units via building power lines and displayed on the extension handset or cradle.

2003000, Jan 2, 2003

Jul 1, 2001

09/897813

David Bartholomew - West Valley City UT, US
Scott Smith - Murray UT, US
Alan Stettler - Murray UT, US

H04H001/00, H04N007/173

725/110000, 725/123000, 455/003010

A wireless telephone link for set top box communication between the set top box and a central office is provided. This invention makes use of the AC power line to provide the communication channel between the set top box and the central office. An extension unit, connected to the set top box provides the interface, including coupling and modulation, between the set top box and the AC power line. A base unit, connected to the central office provides the interface, including the coupling and modulation of signals between the central office and the AC power line.

6107912, Aug 22, 2000

Dec 8, 1997

8/986864

Scott R. Bullock - South Jordan UT
John M. Knab - Sandy UT
Gordon Smith - Sandy UT
David Bartholomew - West Valley UT

Phonex Corporation - Midvale UT

H04B 100, H04H 100

34031001

A wireless power line carrier data communication device is provided. The device is specifically adapted to meet the requirements of high-speed modem data transmission, such as is typically required by digital computer networks and similar devices. The device employs an improved power line transmitter power output which reduces the effect of harmonic distortion and also employs a bit-stream sine wave generator with a digital to analog converter to producing a sine wave for the sub-audio carrier signal, which also reduces the effects of harmonic distortion. The device is specifically designed for data transfer over the AC power lines and is compatible with standard AC power signals as well as standard modem equipment and standard telephone connections.