1
Hsueh Ming Hang: Method and apparatus for dynamic channel bandwidth allocation among multiple parallel video coders. AT&T Bell Laboratories, T Stafford, May 19, 1992: US05115309 (232 worldwide citation)

A dynamic channel allocation unit for specifying a bit rate for each video coder in a set of parallel video coders comprising an overall video coder is disclosed. The dynamic channel allocation unit is supplied from each individual video coder with an average from quantization step size for the prev ...


2
Barin G Haskell, Amy R Reibman: Buffer control for variable bit-rate channel. AT&T Bell Laboratories, T Stafford, October 27, 1992: US05159447 (135 worldwide citation)

The problems of buffer overflow and underflow encountered when employing actually variable or effectively variable bit-rate channels for communicating encoded video images are overcome by jointly controlling the number of bits employed to encode each video frame and the transmission bit-rate of the ...


3
Subrahmanyam Dravida: Synchronization for cylic redundancy check based, broadband communications network. AT&T Bell Laboratories, T Stafford, July 14, 1992: US05131012 (60 worldwide citation)

A received digital signal is synchronized with a receiver in a communications network by employing a code word which is updated in accordance with a unique update technique. The synchronization arrangement receives the digital signal at a receiver, generates an error check code word over a prescribe ...


4
Kai Y Eng, Mark J Karol: High-performance packet-switched WDM ring networks with tunable lasers. AT&T Bell Laboratories, T Stafford, March 31, 1992: US05101290 (54 worldwide citation)

A communications network comprising a plurality of "subnetworks" multiplexed onto a single communications medium. A separate group of NIU's communicate on each predetermined "subnetwork", and each NIU also includes a tunable transmitter for transmitting data to NIU's of other subnetworks. Data from ...


5
DooWhan Choi: Asynchronous-synchronous digital transmission signal conversion. AT&T Bell Laboratories, T Stafford, July 14, 1992: US05131013 (43 worldwide citation)

Asynchronous-synchronous digital signal conversion and vice versa are realized by employing a single synchronizing elastic store and associated phase detector. The signal smoothing and synchronization processes are achieved with a single elastic store by low pass filtering the elastic store write-re ...


6
Zygmunt Haas: Communication architecture for high speed networking. AT&T Bell Laboratories, T Stafford, May 19, 1992: US05115432 (35 worldwide citation)

A new data communications architecture is disclosed in which high level communications services provided to a host processor are arranged into independent horizontal functions that are processed in parallel. Any conditional dependencies among the horizontal functions are resolved by a connector that ...


7
Rise J Frankel, K S Liu: Dual access rings for communications networks. AT&T Bell Laboratories, T Stafford, February 16, 1993: US05187706 (33 worldwide citation)

A switching architecture is disclosed which includes a dual access ring structure interconnecting the location of a customer, a primary central office, a backup central office and a remote central office (hub office) which does not directly serve the customer location. The architecture enables trans ...


8
Rajiv S Dighe: Apparatus and robust method for detecting tones. AT&T Bell Laboratories, T Stafford, June 28, 1994: US05325427 (33 worldwide citation)

A robust tone detector is realized by applying a single taper, which provides a relatively narrow bandwidth filter, to a received signal and, then, performing a Discrete Fourier Transform of the tapered signal. The result of the Fourier transform is used to obtain an estimate of energy in the freque ...


9
Erik J Kramer: Digital signal synchronization employing single elastic store. AT&T Bell Laboratories, T Stafford, June 2, 1992: US05119406 (32 worldwide citation)

An incoming data signal including so-called gaps is synchronized to a new outgoing clock signal by employing a single elastic store and a smooth write address. An elastic store write address is generated in response to an incoming clock signal and is inhibited from advancing during the gaps in the i ...


10
Kaveh Azar: Pin fin heat sink including flow enhancement. AT&T Laboratories, T Stafford, October 27, 1992: US05158136 (23 worldwide citation)

Heat dissipation performance of a pin fin heat sink is improved by utilizing a flow guide arrangement. Flow guide members are positioned relative to the outer rows of the pin fins and longitudinal to fluid flow through the pin fin field of the heat sink. A gap between a lower edge of each flow guide ...