Thomas O'Brien

US Patent:

20110259763, Oct 27, 2011

Filed:

Sep 7, 2010

Appl. No.:

12/807478

Inventors:

Thomas O'Brien - Phoenixville PA, US

International Classification:

B44D 3/02

US Classification:

206 17

Abstract:

An artist palette is disclosed comprising a three-point anchor system for improved comfort and ease of use. The system comprises a first anchor point including a thumb resting surface and a grasping surface, a second anchor point including a forearm resting surface forming a line with the first anchor point parallel to the forearm, and a third anchor point including a torso resting surface forming a triangle together with the first anchor point and the second anchor point. Optionally, the grasping surface rests inside the palette and either one or more of the forearm resting surface and the torso resting surface includes a concave arc curving toward the first anchor point.

US Patent:

6107876, Aug 22, 2000

Filed:

Apr 13, 1999

Appl. No.:

9/291168

Inventors:

Thomas Joseph O'Brien - Limerick PA

Assignee:

Ravisent Technologies, Inc. - Malvern PA

International Classification:

H03F 338

US Classification:

330 10

Abstract:

A digital input switching audio power amplifier uses a simple logic circuit and/or software program for signal processing and, therefore, does not require an expensive DSP processor. The invention provides an approach that allows the integration of power level meters and volume controls in the logic circuit. In one embodiment of the invention, the amplifier accepts multiple inputs, an active one of which may be digitally selected. The invention uses this novel approach to signal processing to achieve high performance. The invention also provides lower system cost as a result of the higher levels of system integration provided by the logic circuit. Increased system versatility results from a modular design which allows the production of an amplifier having optimum cost-to-performance ratios. The amplifier is implemented in ASIC and FPGA circuitry, such that a designer using the invention is provided with flexibility in choosing the various operating parameters of the amplifier, e. g. the amplifier is capable of operating at various power levels and of implementing various output stage topologies.

US Patent:

46896198, Aug 25, 1987

Filed:

Dec 26, 1985

Appl. No.:

6/813502

Inventors:

Thomas E. O'Brien - Warminster PA

Assignee:

General Instrument Corporation - New York NY

International Classification:

G08B 500
H04N 700
H04J 316

US Classification:

34082508

Abstract:

Subscriber terminals serviced by a plurality of remotely located two-way addressable cable television systems are polled using polling command signals addressed to the different terminals from a polling center. The polling command signals are sent to the subscriber terminals via their associated headends. Responses from the polled subscriber terminals are successively received at the polling center. The round trip signal propagation times required to communicate the polling command and response signals to and from each of the headends is equalized so that the response from the polled subscriber terminals are received in the same order in which the terminals are addressed by the polling command signals. A uniform delay is inserted after each successive polling command signal to allow for variations in the signal propagation times between the headends and individual subscriber terminals coupled thereto.

US Patent:

45584648, Dec 10, 1985

Filed:

Jul 22, 1985

Appl. No.:

6/757762

Inventors:

Thomas E. O'Brien - Warminster PA

Assignee:

General Instrument Corporation - New York NY

International Classification:

H04H 102
H04N 100
H04N 7167

US Classification:

455 4

Abstract:

An addressable CATV converter for connection with a remote headend in a cable distribution system contains a memory into which a unique address code identifying that converter is downloaded from the remote headend.

US Patent:

44778007, Oct 16, 1984

Filed:

Dec 7, 1981

Appl. No.:

6/328304

Inventors:

Thomas E. O'Brien - Warminster PA

Assignee:

General Instrument Corporation - New York NY

International Classification:

G08B 100
G08B 2600

US Classification:

340533

Abstract:

A cable TV security system utilizes three radio frequency signals as three data communication channels. One downstream channel is provided as a polling channel in available spectrum space in the standard FM band. Two upstream channels are provided in the return portion of the cable spectrum. One of the upstream channels is a polling response channel, and the other is an alarm channel. Subscriber security units transmit on the polling return channel in response to downstream command messages on the polling channel. Alarm conditions are immediately transmitted on the alarm channel so that system response to an alarm condition is fast and substantially independent of the number of subscribers.