1
Donald E Blahut, Edward S Szurkowski: Program server for interactive television system. AT&T, Geoffrey D Green, David M Rosenblatt, August 15, 1995: US05442389 (331 worldwide citation)

The invention relates to a system for transmitting stored programs, such as movies and musical works, to customers via a distribution network, such as a cable television system. The programs are stored in compressed form in a program library, such as a tape cartridge library. On receipt of a request ...


2
Donald E Blahut, Edward S Szurkowski: Integrated television services system. AT&T, Nicholas J Skarlatos, David M Rosenblatt, Geoffrey D Green, July 23, 1996: US05539449 (292 worldwide citation)

A system is disclosed for delivering audio and/or video signals to users in connection with the provision of interactive television services. Various sources of such signals are connected to a digital network, such as a packet network. Also connected to such network are control and application proce ...


3
Donald E Blahut, William M Schell, Guy A Story, Edward S Szurkowski: Method of advertisement selection for interactive service. AT&T, David M Rosenblatt, July 2, 1996: US05532735 (279 worldwide citation)

Described is a technique for an interactive television ("ITV") system wherein viewers are allowed to select a desired level of advertisements with which they are provided. The technique comprises transmitting to a interactive services subscriber location a program and a set of advertisements (collec ...


4
Donald E Blahut, Edward S Szurkowski: Interactive television with tailored programming. AT&T, Geoffrey D Green, David M Rosenblatt, August 29, 1995: US05446490 (220 worldwide citation)

Different components of television programs, such as the video and audio components or different time segments of the program, are assigned to different channels transmitted in the form of packetized digital information in at least one of the channels of a multi-channel cable television distribution ...


5
James D Johnston: Rate loop processor for perceptual encoder/decoder. Lucent Technologies, David M Rosenblatt, Donald P Dinella, May 6, 1997: US05627938 (134 worldwide citation)

A method and apparatus for quantizing audio signals is disclosed which advantageously produces a quantized audio signal which can be encoded within an acceptable range. Advantageously, the quantizer uses a scale factor which is interpolated between a threshold based on the calculated threshold of he ...


6
Donald E Blahut: Initializing terminals in a signal distribution system. AT&T, Geoffrey D Green, David M Rosenblatt, December 13, 1994: US05373288 (104 worldwide citation)

Signal distribution systems, such as interactive cable television systems, have a central server that communicates with remote terminals wherein the server assigns a specific address to each newly-connected terminal for control messages and polls. In the case of an interactive cable television syste ...


7
Donald E Blahut: Multi-channel television converter for conventional and interactive signals. AT&T, Geoffrey D Green, David M Rosenblatt, May 23, 1995: US05418559 (97 worldwide citation)

One or more channels in a multi-channel cable television distribution system is used for the transmission of interactive television (ITV) signals in the form of packetized digital information from the cable system headend to subscribers. A converter at each subscriber location is connected between t ...


8
Chin H Lee, Lawrence R Rabiner, Jay G Wilpon: Speech recognition employing key word modeling and non-key word modeling. AT&T, Wilford L Wisner, William Ryan, David M Rosenblatt, Ronald D Slusky, April 16, 1996: US05509104 (94 worldwide citation)

Speaker independent recognition of small vocabularies, spoken over the long distance telephone network, is achieved using two types of models, one type for defined vocabulary words (e.g., collect, calling-card, person, third-number and operator), and one type for extraneous input which ranges from n ...


9
Joseph L Hall II, James D Johnston: Perceptual coding of audio signals. AT&T Bell Laboratories, William Ryan, David M Rosenblatt, August 23, 1994: US05341457 (84 worldwide citation)

A technique for the masking of quantizing noise in the coding of audio signals is adapted to include geometric interpolation between the thresholds for a tone masking noise and for noise masking a tone, in order to reduce use of bit-rate capability where it is not necessary for transparent or high q ...


10
Joseph L Hall II, James D Johnston: Perceptual coding of audio signals using entropy coding and/or multiple power spectra. AT&T, William Ryan, David M Rosenblatt, Kenneth M Brown, July 9, 1996: US05535300 (71 worldwide citation)

A technique for the masking of quantizing noise in the coding of audio signals is usable with the types of channel coding known as "noiseless" or Huffman coding and with variable radix packing. In a multichannel environment, noise masking thresholds may be determined by combining sets of power spect ...