Other

Jds Uniphase Corporation

Viavi Solutions Inc.

Acterna LLC

John Garfield Williams

David John Boyes

Paul Francis Wyar

Walter T Hartwell

Ronald G Cornell

Vera Williams

Bently A Crane

Systems and methods for analyzing the performance of a digital network include capturing a stream of digital data, e.g., internet protocol (IP) packets, that represent streaming video, identifying which of the IP packets include bit errors, determining to which of a plurality of pixels the IP packets including bit errors belong and identifying such pixels as corrupted pixels, and illuminating only the corrupted pixels on a display of a tool. Corrupted pixels in different time blocks can be displayed with different colors to gain a better appreciation of the bit error rate over time.

Systems and methods for visualizing errors in video signals

Systems and methods for analyzing the performance of a digital network include capturing a stream of digital data, e.g., interne protocol (IP) packets, that represent streaming video, identifying which of the IP packets include bit errors, determining to which of a plurality of pixels the IP packets including bit errors belong and identifying such pixels as corrupted pixels, and illuminating only the corrupted pixels on a display of a tool. Corrupted pixels in different time blocks can be displayed with different colors to gain a better appreciation of the bit error rate over time.

An adaptive pulse width (APW) Time Domain Reflectometer (TDR) comprises an enhancement to the standard Pulse TDR by adjusting the effective pulse width as a function of time. Improved resolution for a large range of cable lengths is obtained, as well as allowing an all-in-one view of the processed return signal trace.

Adaptive pulse width time domain reflectometer

A portable tester for testing mutual effects of multiple services received via a shared network access link includes service signaling means for simulating user premises devices. In one embodiment, the tester is a triple play services tester supporting three IP addresses at the same time.

Triple play services tester

A message storage system (104) cooperates with a plurality of telephone switching offices (102, 122) to provide a variety of voice storage services to subscribing customers served by the switching offices. Control signals and voice messages are delivered to the message storage system in analog form and converted to digital signals. A processor circuit (111)interprets the control signals and sends work lists to a plurality of microprocessor controlled message controllers (113a through 113n) which in turn each control a plurality of disc transports (114a through 114n), a time multiplex switch (115), and a larger plurality of buffer circuits (116) wherein the messages in digital signal form are speed buffered for storage in the disc transports. The message controllers control the flow of digital data words between the buffer circuits and the disc transports via the time multiplex switch to provide highly efficient mass storage and retrieval of messages.

Data storage and retrieval structure for a message storage system

A nutrient dispersal device adapted for vertical insertion into the soil is comprised of a cap section, a hollow elongated cylindrical body section rotatably connected to the cap section at an upper end of the body section and a hollow tip section rotatably connected to the lower end of the body section. Liquids entering through a cap section aperture, mix with nutrients stored within the tip section and the resultant mix is dispersed through nutrient dispersal apertures arranged in the sidewalls of the body section. The diameter of the body section is advantageously less than the diameter of the tip section such that the nutrient dispersal apertures arranged in the sidewalls of the body section are not blocked by the surrounding soil during vertical insertion of the nutrient dispersal device into the soil. A flotation device contained with the body section of the nutrient dispersal device rises in conjunction with the liquid level in the body section to seal the cap aperture under conditions of rapid liquid input, thereby, preventing nutrient waste.

Growing community of inventors

Roanoke, VA, United States of America

John Garfield Williams