Bizarre Patents
Combination Beverage Container and Spittoon
A combination beverage container and spittoon includes a bottom portion including outer wall and a first inner wall defining a spittoon space.
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| Number | Title | Issue Date |
| 5177739 | Multiport - multipoint digital data service In a Digital Data System (DDS) a method and apparatus for providing multipoint multiport service. Differences in time delays through the network are compensated by an alignment training wherein the delays from each remote station are measured at a Central... | 01/05/1993 |
| 5159685 | Expert system for communications network An Expert System 10 for providing diagnostics to a data communications network 5. Alarms from a Network Manager 24 are received and queued by an Event Manager 117 and then filtered by an Alarm Filter 118 to remove redundant alarms. Alarms which are ready ... | 10/27/1992 |
| 5127036 | Fifty percent duty cycle divided-by-m counter Disclosed is a divide-by-m counter for generating an ouptut clock signal having a fifty percent duty cycle from a higher frequency source clock signal having m cycles for each single cycle of the output clock signal and wherein m may be an odd or even int... | 06/30/1992 |
| 5123009 | Method and apparatus for disabling an echo canceller A method and apparatus for disabling an echo canceller in a digital telephone network. An originating DSU transmits a sequence of synchronization codes which are shifted by the various delays in the network. The answering DSU receives the shifted codes an... | 06/16/1992 |
| 5119403 | Superframes The present invention is directed toward a method and apparatus in a communications device for mapping a selected group of data bits into a predetermined number of two-dimensional symbols selected from a minimized alphabet of M two-dimensional symbols for... | 06/02/1992 |
| 5063303 | Soft start circuit A soft start circuit for hot installation of modules into an active bus. A very low Rds MOSFET provides bias through its drain to source path from a bus supply. This path is activated by a gate bias network which charges a capacitor from a supp... | 11/05/1991 |
| 5063523 | Network management system with event rule handling A data communication network management system allows a user to establish rules which are pattern matched to attributes of incoming events, such as alarms, from network objects. When a match is found, the network management system retrieves a user prepare... | 11/05/1991 |
| 5048087 | Key management for encrypted packet based networks In a packet based communication network 10, a key management center 20 is used to distribute cryptographic keys for either a switched virtual circuit or a permanent virtual circuit. The disclosed methods allow the key management center 20 to communicate d... | 09/10/1991 |
| 5001747 | Frequency offset estimator for data modem A method for estimating an amount of phase roll on a transmission channel. A signal of known frequency is transmitted over the channel by a near end modem. An average noise autocorrelation matrix is subtracted from an average signal plus noise autocorrela... | 03/19/1991 |
| 4998244 | High speed module interconnection bus A method and apparatus for providing communication among N modules connected to a common communication bus uses a bus structure with a reserve line for signaling the occurrence of a reservation time slot during which time each of the N modules which have ... | 03/05/1991 |
| 4998243 | ISDN terminal adapter with teleconference provision A device for providing teleconference capabilities in an ISDN includes a first receiver for receiving a first signal representing a first message over a first ISDN B-channel. A second receiver receives a second signal representing a second message over a ... | 03/05/1991 |
| 4993045 | Modem diagnostic loop A modem side diagnostic loopback apparatus for a two wire communication circuit includes a transformer having a mechanism for connecting to a two wire transmission line on a transmission line side and for coupling to a modem on a modem side. A modem trans... | 02/12/1991 |
| 4965804 | Key management for encrypted packet based networks In a packet based communication network 10, a key management center 20 is used to distribute cryptographic keys for either a switched virtual circuit or a permanent virtual circuit. The disclosed methods allow the key management center 20 to communicate d... | 10/23/1990 |
| 4949338 | Arbitration in multiprocessor communication node An architecture for a switching node of a communication network includes a dedicated hardware Layer 1 processing portion and a Layer 2 and 3 processing portion based on multiple programmed general purpose processors. An array of such processors are used w... | 08/14/1990 |
| 4937844 | Modem with data compression selected constellation A data modem includes a data compression circuit which compresses incoming data prior to transmission. The compression ratio obtained from the compression process is used to select a constellation for transmission of the data. When higher compression rate... | 06/26/1990 |
| 4935963 | Method and apparatus for processing speech signals Processing speech signals applicable to a variety of speech processing including narrowband, mediumband and wideband coding. The speech signal is modified by a normalization process using the envelope of the speech signal such that the modified signal wil... | 06/19/1990 |
| 4924456 | High speed modem A modem is disclosed having a data transmission protocol involving lower-speed, full-duplex operation during the connect sequence with a remote modem and an automatic switch to higher-speed, half-duplex operation for data transfer. Further, the modem data... | 05/08/1990 |
| 4916692 | TDM bus controller An apparatus for controlling access to a time division multiplexed (TDM) bus includes a frame address register having a plurality of storage registers for storing a plurality of frame addresses designated for use in communicating over said TDM bus. A fram... | 04/10/1990 |
| 4916717 | Clock resynchronization mechanism Disclosed is an arrangement having a main card cage, a plurality of remote card cages, and a data transport system for transmitting synchronous information, the data transport system having at least one bust electrically coupling the card cages to define ... | 04/10/1990 |
| 4916610 | Multilanguage software integration through preprocessing A method of assuring consistency of constants in a multilanguage software system, includes generating a first set of code written in a first language using a plurality of symbolic constants to represent a corresponding plurality of actual constants. A sec... | 04/10/1990 |
| 4893305 | Inband dynamic port allocation A multi-port (multiplexed) modem for implementing automatic reconfiguration of the ports so that transmission bandwidth can be optimized. The modem utilizes a sequence of communications and acknowledgments transmitted over the donor port donating the band... | 01/09/1990 |
| 4891806 | Constellation multiplexed inband secondary channel for voiceband modem A method of providing an inband secondary channel for a data modem includes encoding the main channel data using a convolutional encoder so that main channel data symbols are selected from a first constellation. The secondary channel data are encoded usin... | 01/02/1990 |
| 4891805 | Multiplexer with dynamic bandwidth allocation A method and apparatus for assigning time slots in a frame of time slots used for time division multiplexing, the time slots being representable as a position within the frame, in which it is determined what quantity of the time slots are required to prov... | 01/02/1990 |
| 4891813 | Passive bus communication using alternate CRC An apparatus for providing passive bus communication in an ISDN without use of services of a central office uses an alternative error checking (CRC) technique for communication between devices on the passive bus. This alternate CRC is interpreted as an er... | 01/02/1990 |
| 4858070 | Modular expandable housing arrangement for electronic apparatus A modular housing for electronic apparatus includes an approximately C-shaped enclosure member having an inner portion and first and second sides. The enclosure member includes a male stacking enclosure connector on the first side; a female stacking enclo... | 08/15/1989 |
| 4835769 | Passive bus communication for ISDN An apparatus for providing passive bus communication in an ISDN without use of services of a central office includes a passive bus suitable for ISDN D-channel frame communication, the passive bus having an echo channel and having a plurality of terminal d... | 05/30/1989 |
| 4823382 | Echo canceller with dynamically positioned adaptive filter taps An echo canceller according to the present invention includes means for storing an impulse response in a memory, the impulse response being indicative of the characteristics of a transmission line. It also includes a detector for detecting ranges of sampl... | 04/18/1989 |
| 4821265 | Node architecture for communication networks An architecture for a switching node of a communication network includes a dedicated hardware Layer 1 processing portion and a Layer 2 and 3 processing portion based on multiple programmed general purpose processors. An array of such processors are used w... | 04/11/1989 |
| 4817865 | Ventilation system for modular electronic housing A ventilation arrangement for a modular enclosure for electronic circuits includes a ventilation fan (8) including a motor (10) for providing movement of cooling air in the modular enclosure, the motor (10) being operable at at least two speeds including ... | 04/04/1989 |
| 4815109 | Sampling clock synchronization In a method for compensating for differences in a first clock signal's rate and a second clock signal's rate, transmitting voice samples from a first location synchronized to the first clock signal are received at a second location having a second clock f... | 03/21/1989 |
| 4811342 | High speed analog echo canceller An echo canceller stores echo signals in a plurality of sample and hold circuits. These echo signals are selectively switched to the input of a summing amplifier for subtraction from a data plus echo signal. A training sequence detector is utilized to det... | 03/07/1989 |
| 4807230 | Frame synchronization Disclosed is a modem including a transmitter having a convolutional encoder for transforming each group interval digital data into an expanded bit sequence having symbol-selecting bits and subset-selecting bits forming a plurality of bit groups, with each... | 02/21/1989 |
| 4805215 | Adaptive echo canceller with sparse dynamically positioned taps This invention relates to an echo canceller, for a transmission line, including a shift register having an input for receiving an input signal from a signal source and having a plurality of output taps for providing a plurality of equally spaced delayed s... | 02/14/1989 |
| 4797898 | Method and apparatus for equalization of data transmission system A data communication system, comprising a first and a second transceiver coupled together through a transmission channel, the transmission channel having transmission characteristics. A measurement circuit is coupled to the first transceiver for measuring... | 01/10/1989 |
| 4780883 | Data modem with adaptive synchronized speed change A method for changing the data transmission rates in a synchronous data communication system including a first modem and a second modem coupled together through a transmission channel, the transmission channel including a first path for transmissions from... | 10/25/1988 |
| 4761784 | Modem and method using multidimensional coded modulation Disclosed is a modem including a transmitter having a convolutional encoder for transforming each group interval digital data into an expanded bit sequence having symbol-selecting bits and a frame of subset-selecting bits forming a plurality of bit groups... | 08/02/1988 |
| 4760598 | Coded data transmission system Disclosed is a scrambler/encryption system for randomizing an information-containing data signal for transmission and for reproducing the original information at a receiver. The information-containing data to be transmitted, encoded with a preselected bas... | 07/26/1988 |
| 4755985 | Method and apparatus for facilitating moves and changes in a communication system The present invention relates to a communication system which includes a plurality of N communication links coupled to a central office. A plurality of N-1 user devices are coupled to N-1 of the N communication links with each of the N-1 user devices incl... | 07/05/1988 |
| 4755992 | Transparent packet access over d-channel of ISDN An improved method of providing transparent packet access to a D-channel of an ISDN, includes the step of providing a user packet including an Address field, a Control field and an Information field, for transporting to an ISDN; Extracting the Address, Co... | 07/05/1988 |
| 4748626 | Viterbi decoder with reduced number of data move operations Disclosed is a modem including a transmitter having a convolutional encoder for transforming each time unit digital data into an expanded bit sequence having symbol-selecting bits and subset-selecting bits, the transmitter further providing modulation of ... | 05/31/1988 |
