CARL JOSEPH STAAB
Pilots at Sardis Rd, Murrysville, PA

5327468, Jul 5, 1994

Jun 19, 1992

7/901446

Warren A. Edblad - Plum Boro PA
Albert W. Crew - Monroeville PA
Carl J. Staab - Murrysville PA

Westinghouse Electric Corp. - Pittsburgh PA

H04L 700, H04J 322, H04J 312

375107

The operating system clocks in each station on a counter rotating ring network of a distributed processing system are synchronized by latching the count in a free running counter in the network interface of each station at the instant a clock message transmitted by a timekeeper station is received. The timekeeper station then calculates from its operating system time-of-day clock and its free running counter, its time of reception of the clock message, and broadcasts this timekeeper time of reception to the other stations. Each other station calculates its own time of reception from its operating system time of day, and the count in its free running counter, and uses the difference between its time of reception and the timekeeper time of reception to correct its operating system time-of-day clock. Repeater and media propagation delays determined from the dynamic topography of the network are taken into account in calculating the correction factor. The free running counter can also be used to maintain a higher resolution local time of day than is available from the operating system time-of-day clock.

5864680, Jan 26, 1999

Jun 5, 1997

8/869473

Warren A. Edblad - Plum Boro PA
Linda L. Santoline - South Park PA
Gilbert W. Remley - O'Hara Township PA
Carl J. Staab - Murrysville PA
Albert W. Crew - Monroeville PA

Westinghouse Electric Corporation - Pittsburgh PA

G06F 15173

39520072

A computer network system repetitively distributes messages including uniquely identified blocks of real time data containing a current data image over a broadcast communications network to all real time stations for storage of each repetition of each entire block of data directly in station memory at a unique address space assigned to that uniquely identified block of data. The real time stations receive the blocks of data and alternatively receive other messages from the real time stations. The other messages have a recognized standard protocol, such as the TCP/IP or UDP/IP protocol of the Internet Protocol Suite.

5305314, Apr 19, 1994

Jun 19, 1992

7/901445

Warren A. Edblad - Plum Boro PA
Linda L. Santoline - South Park PA
Carl J. Staab - Murrysville PA
Charles W. Einolf - Murrysville PA
Albert W. Crew - Monroeville PA

Westinghouse Electric Corp. - Pittsburgh PA

H04J 316

370 79

Real time periodic messages generated by a plurality of stations on a data communication network and having data periods ranging from a shortest to a longest, where the longest data period is an integer multiple of all the others, are assigned by a server station to transmit time slots, equal in duration to the shortest data period, on a global basis to minimize the number of messages transmitted by all stations during each transmit time slot.