...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6442520 | Method and apparatus for continuous speech recognition using a layered, self-adjusting decoded network A continuous speech decoder that is built up of multiple layers. Each of the layers uses independent knowledge sources and rules, but all the layers cooperate to quickly decode the speech input into words. A first layer is concerned with acoustic data, a ... | 08/27/2002 |
| 6351743 | Method and apparatus for operating domain name servers A domain name server, DNS, for Internet Protocol or Intranet Protocol networks, that has a non-cached domain name server connected to a cached domain name server, and a query server that is connected to both the non-cached DNS and the cached DNS. The quer... | 02/26/2002 |
| 6351465 | System for routing packet switched traffic The system of the invention uses ATM switches as high performance Internet routers by using standard ATM signaling to set up cut-through paths. The cut-through paths are Switched Virtual Paths which are shared with similar flows toward the same destinatio... | 02/26/2002 |
| 6310939 | Method and apparatus for screening a call as the call is transmitted to voice mail A screening and monitoring capability for switch based voice messaging systems that allows a called party to hear the caller and the caller's voice as the caller leaves a message and break in to start a normal telephone discussion if the caller or the cal... | 10/30/2001 |
| 6253112 | Method of and apparatus for constructing a complex control system and the complex control system created thereby A method of and apparatus for constructing a control system and a control system created thereby which is based on multiple finite state machines, each in turn based on a finite state machine with constant code (FSMcc). An input preprocessor module normal... | 06/26/2001 |
| 6243456 | ETSI intelligent network capability set 1 trigger detection points on a service switching point A method and apparatus for setting up and executing trigger detection points that implement a previously unimplemented ETSI intelligent network capability set 1. Thus, the requirements of this ETSI intelligently networking standard are realized in a fast ... | 06/05/2001 |
| 6233326 | Method and apparatus for identifying a line blockage Call blockages can now be identified down to the line and group of lines that caused the call blockage. No more long statistical studies followed by guessing in order to alleviate blockages. This method and apparatus operating in concert with recently add... | 05/15/2001 |
| 6218611 | Self locking radio frequency plug A radio frequency cover and complementary shaped hole that securely fit together to provide electro magnetic and electrostatic shielding of adjustment access holes. The cover preferably is cold headed and the complementary hole is either stamped, machined... | 04/17/2001 |
| 6112175 | Speaker adaptation using discriminative linear regression on time-varying mean parameters in trended HMM A method and apparatus using a combined MLLR and MCE approach to estimating the time-varying polynomial Gaussian mean functions in the trended HMM has advantageous results. This integrated approach is referred to as the minimum classification error linear... | 08/29/2000 |
| 6104795 | Method and apparatus for detecting and announcing pin fraud on coin telephones that use battery reversal pulses to meter charges Pin fraud of battery reversal pulse metered sophisticated coin telephones is detected, an announcement of the detected fraud made, and the fraud is stopped if the detected fraud continues by the method and apparatus of the invention. By carefully monitori... | 08/15/2000 |
| 6098113 | Apparatus and method for address translation and allocation for a plurality of input/output (I/O) buses to a system bus Multiple subsystem I/O (Input/Output) buses are coupled to one or more system buses of a computer system by interface circuits which perform necessary decoding of memory space and I/O (Input/Output) space for allocation of portions of the memory space and... | 08/01/2000 |
| 6075785 | Apparatus and method for providing memory address interchanging for high speed memory accesses A method and apparatus for accessing data of a telecommunications interface control RAM to meet the two different requirements of the two types of devices accessing the control RAM. Data for output ports are typically aligned such that time-slot 0 for eac... | 06/13/2000 |
| 6076058 | Linear trajectory models incorporating preprocessing parameters for speech recognition The proposed model aims at finding an optimal linear transformation on the Mel-warped DFT features according to the minimum classification error (MCE) criterion. This linear transformation, along with the (NSHMM) parameters, are automatically trained usin... | 06/13/2000 |
| 6061442 | Method and apparatus for improved call control scheduling in a distributed system with dissimilar call processors A call scheduling and assignment method and apparatus that schedules each call request on an application processor of a multiple processor system that will process the call request in the smallest amount of time. This method and apparatus then places resp... | 05/09/2000 |
| 6055499 | Use of periodicity and jitter for automatic speech recognition A class of features related to voicing parameters that indicate whether the vocal chords are vibrating. Features describing voicing characteristics of speech signals are integrated with an existing 38-dimensional feature vector consisting of first and sec... | 04/25/2000 |
| 6018780 | Method and apparatus for downloading a file to a remote unit A method and apparatus that takes advantage of the connectivity of a unit to speed up communication of needed files to the unit. The method uses each port as a channel to input or pump a portion of the file. If a unit has N equally fast ports, it could po... | 01/25/2000 |
| 6006181 | Method and apparatus for continuous speech recognition using a layered, self-adjusting decoder network A continuous speech decoder that is built up of multiple layers. Each of the layers uses independent knowledge sources and rules, but all the layers cooperate to quickly decode the speech input into words. A first layer is concerned with acoustic data, a ... | 12/21/1999 |
| 5956675 | Method and apparatus for word counting in continuous speech recognition useful for reliable barge-in and early end of speech detection Speech recognition technology has attained maturity such that the most likely speech recognition result has been reached and is available before an energy based termination of speech has been made. The present invention innovatively uses the rapidly avail... | 09/21/1999 |
| 5944790 | Method and apparatus for providing a web site having a home page that automatically adapts to user language and customs In order to make the world wide web truly world wide, a method and apparatus is provided such that accesses to a world wide web home page can be responded to with a home page adapted to the language or dialect that is most likely to to match the native la... | 08/31/1999 |
| 5912664 | Program category selection with filtered data and displayed cascaded cards An apparatus and method for presenting a viewer with an overall representation of the present number of entertainment programs available for selection given one week of program schedule data for 300 or more channels and one or more filtering criteria to l... | 06/15/1999 |
| 5859850 | Elastic store circuit for composite cells switched through an ATM network A method and apparatus for interfacing ATM network packet type communications to STM frame type communications. This method and apparatus is especially useful for interfacing isochronous ATM cells to STM frames. The apparatus concerns an elastic store whi... | 01/12/1999 |
| 5850531 | Method and apparatus for a slider A system that has a graphical user interface (GUI) that allows a user to readily define and manipulate a transform function from one attribute, such as numerical value, to another attribute that is more understandable by by the user such as color, size or... | 12/15/1998 |
| 5844823 | Method for scaling-up a telecommunication system A method for scaling-up an existing and successfully operating telecommunication system to an increased capability telecommunication system by using newer, higher performance components while keeping as much of the original software and hardware architect... | 12/01/1998 |
| 5819257 | Process for providing transitive closure using fourth generation structure query language (SQL) Any existing transitive closure in a database can be found using a method based on standard 4th Generation Structured Query Language (SQL) without non-standard extensions to perform recursion analysis. There are no requirements to stay within a preset num... | 10/06/1998 |
| 5812124 | Program category selection with filtered data and displayed cascaded cards An apparatus and method for presenting a viewer with an overall representation of the present number of entertainment programs available for selection given one week of program schedule data for 300 or more channels and one or more filtering criteria to l... | 09/22/1998 |
| 5757896 | Method and apparatus for preventing pin fraud on coin telephones that use battery reversal pulses to meter charges Pin fraud of battery reversal pulse metered sophisticated coin telephones is detected and prevented by the method and apparatus of the invention. By carefully monitoring within the switch office the loop current that is flowing in the 48 volt battery circ... | 05/26/1998 |
| 5740211 | Method and apparatus for a hitless switch-over between redundant signals Real time switch overs from one set of timing signals to a redundant set of timing signals in an ATM system, as required by periodic maintenance checks, are accomplished without incurring data errors by this apparatus and method. Each switch over apparatu... | 04/14/1998 |
| 5732128 | Method and apparatus for storing call feature data A method and apparatus for recording call features, whenever they are sactivated, at the originating and/or terminating switch, whether or not the call features activated have successful results. Many such call feature activation records are gathered toge... | 03/24/1998 |
| 5724349 | Terabit per second ATM packet switch having out-of-band control with multi casting An out-of-band controller for a large packet switch which is distributed throughout partitions or pipes of the packet switch. Thus, the out-of-band controller is divided into multiple pipe controllers. These pipe controllers are connected and operated in ... | 03/03/1998 |
| 5724352 | Terabit per second packet switch having assignable multiple packet loss probabilities A physically realizable one terabit or more ATM packet switch that has a large number of input interfaces connected to a single stage switching fabric which is in turn connected to a number of output modules, generally according to the growable packet swi... | 03/03/1998 |
| 5717826 | Utterance verification using word based minimum verification error training for recognizing a keyboard string A speech recognition method and apparatus which has a first stage to provide keyword hypotheses and a second stage to provide testing of those hypotheses by utterance verification. The utterance verification used has three separate models for each word: o... | 02/10/1998 |
| 5687172 | Terabit per second distribution network A distribution network that has very low internal blocking, similar to that found in large N×N single crossbar networks, but without the complexity and cost of such a network. Further, this distribution network has only one stage to simplify and speed up... | 11/11/1997 |
| 5687287 | Speaker verification method and apparatus using mixture decomposition discrimination A new speaker verification method, termed Mixture Decomposition Discrimination (MDD), and a new apparatus for using MDD are presented. MDD takes mixture component score information from a speaker independent recognizer and transmits this information while... | 11/11/1997 |
| 5675732 | Dynamic channel assignment for TCP/IP data transmitted via cable television channels by managing the channels as a single sub network A system which avoids the bandwidth inefficiencies of simply providing multiple separate and independent channels for distributing data services over television compatible networks by considering the multiple channels as one unit and managing them as one ... | 10/07/1997 |
| 5642349 | Terabit per second ATM packet switch having distributed out-of-band control An out-of-band controller for a large packet switch which is distributed throughout partitions or pipes of the packet switch. Thus, the out-of-band controller is divided into multiple pipe controllers. These pipe controllers are connected and operated in ... | 06/24/1997 |
| 5608729 | Method and apparatus for providing two-way data communication cover a widely distributed network An architecture for a distributed CSMA/CD network using IEEE 802.3 protocol that is widely extended between transmitting and receiving nodes by placing some of the idle/busy/collision functions in one or more protocol control nodes which are located betwe... | 03/04/1997 |
| 5606593 | Apparatus and method for automatically returning a telephone set to an on-hook condition An apparatus that after a time period settable by the user automatically returns an off-hook telephone to an on-hook condition. This apparatus thus electrically hangs up a telephone handset that is inadvertently left off-hook and allows normal handling of... | 02/25/1997 |
| 5606317 | Bandwidth efficiency MBNB coding and decoding method and apparatus A method and apparatus for encoding and decoding m-bit groups of digital data, where m is at least eight, into serial n bit groups such that each encoded serial n-bit group has sufficient data transitions therein to maintain the synchronization of a phase... | 02/25/1997 |
| 5590176 | Arrangement for local trunk hunting in a distributed switching system A process and apparatus providing local hunting of a telecommunication trunk in response to a request coming from an external base station or switching unit. This process and apparatus by utilizing the capabilities of a local switching module or node save... | 12/31/1996 |
| 5581797 | Method and apparatus for displaying hierarchical information of a large software system An interactive method and apparatus for displaying structure, statistics, and characteristics of large software systems, i.e. of more than one million lines of code. This method and apparatus displays important structure and statistics in a manner where t... | 12/03/1996 |