Bizarre Patents
A helium-filled sun shade for protecting individuals engaged in outdoor activities.
PatentStorm News
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 |
| 5088090 | Routing system to interconnect local area networks A transmission system transmits data among interconnected local area networks using a bridge coupled between local area networks which senses whether the data originating node transmitted the data using transparent routing or source routing. The bridges p... | 02/11/1992 |
| 5079764 | Operation mode settable LAN interconnecting apparatus In a LAN interconnecting apparatus having two transmitting and receiving sections connected to respective LANs, each of the transmitting and receiving sections can be set in either a first or a second operation mode by setting a register. The transmitting... | 01/07/1992 |
| 5077732 | LAN with dynamically selectable multiple operational capabilities Multiple different operational capabilities, such as data transfer rates or communication protocols, are selectable for use on a single LAN. Enchanced nodes of the LAN have the capability of utilizing either an enhanced capability or a common capability i... | 12/31/1991 |
| 5060239 | Transfer strobe time delay selector and method for performing same A transfer strobe delay stage selector insures accurate transfer of data from high speed circuitry to low speed circuitry through use of a delay stage module comprising a plurality of delay stages, and an associated multiplexor for selecting one of the de... | 10/22/1991 |
| 5058156 | Network interface and communication terminal According to the invention, for connections between terminals connected to different networks, the terminals intended for connection to the network having the higher capacity are so equipped that, alternatively (I, II), they could also operate at the netw... | 10/15/1991 |
| 5058163 | Interface unit for transferring digital data between time-domain multiplexed communication links An apparatus for transferring digital data between time-domain multiplexed communication links of a telephone system which forms part of a computer network. A time-domain multiplexed communication link interface unit for transferring digital data between ... | 10/15/1991 |
| 5049875 | Method and apparatus for out of range detection in response to nondetection of predetermined baud rates A baud rate detector determines the baud rates of signals received by a selective call receiver. If the signals have no detectable baud rate or the baud rate of the received signals does not match that of a plurality of known selective call network transm... | 09/17/1991 |
| 5048055 | Multi-data rate selectable equalizer An equalizer circuit suitable for selectively equalizing a transmission media operating at one of a number of different data rates has a number of equalizers, one for each data rate, connected in parallel to the media and a selectively operable means for ... | 09/10/1991 |
| 5038365 | Modem having a software-adapted modulation rate Modem receiving from/transmitting to a DTE data bits at a rate DR and adapted for operating at a modulation rate MR in an environment operating at a basic rate BR. In the receiving way, it comprises a first means for converting a number X of samples recei... | 08/06/1991 |
| 5034948 | Telephone apparatus system A telephone system connected to an ISDN and a public service telephone network (PSTN) includes ISDN and PSTN interfaces and allows connected telephone sets to communicate with the both the ISDN and PSTN through a telephone apparatus main body. When the te... | 07/23/1991 |
| 5023869 | Method and apparatus for maximizing the transmission capacity of a multi-channel bidirectional communications link A method for determining the highest, common bi-directional transmission rate between two stations of an ISDN communications link includes the steps of a) selecting a candidate transmission rate from a range of candidate transmission rates, b) transmittin... | 06/11/1991 |
| 5010548 | Scanner interface for the line adapters of a communication controller A line-adapter of a communications controller includes, for scanning the teleprocessing lines connected to it, cyclic scanning means FES exchanging information with the lines through a serial bidirectional link on which data and control informations are p... | 04/23/1991 |
| 5008902 | Automatic baud rate detection Method for determining the baud rate of a data stream by comparison of captured data to known autobaud characters. Samples are received from the communication device and stored in memory until a set of the samples are accumulated. Then, a sample clock is ... | 04/16/1991 |
| 5007045 | Integrated communications system for HDLC variable-length data packets and fixed-length voice/video packets In an integrated communications system, HDLC variable-length packets and non-HDLC fixed-length packets are decomposed into cells and a cell identifier is generated for each of the cells for identifying its type. A frame sync code is transmitted from one e... | 04/09/1991 |
| 5007047 | Adaptive rate control for echo cancelling modem An echo cancellation modem for full-duplex communication over a channel with a remote device in accordance with one of several possible modulation schemes suitable for different channel qualities, respectively. The modem includes an echo canceller for red... | 04/09/1991 |
| 4998248 | Integrated services digital network (ISDN) system and multimedia data connection method in same system An integrated services digital network (ISDN) system has an ISDN; and a plurality of media equipments, including at least one media device, connected with the ISDN through subscriptor lines, at least one of the media equipments including a plurality of me... | 03/05/1991 |
| 4995056 | System and method for data communications In a communications system, a sending system and a receiving system have multiple data buffers. In response to an inquiry from the sending system, the receiving system transmits information which indicates the size and number of data buffers available in ... | 02/19/1991 |
| 4972432 | Multiplexed synchronous/asynchronous data bus A multiplexed synchronous/asynchronous data bus is disclosed in which three bus lines are used to convey bidirectional synchronous data between at least two data devices at a relatively low data rate. Half duplex asynchronous data is applied at a higher d... | 11/20/1990 |
| 4972407 | Time-division switching circuit transforming data formats A time-division switching circuit for exchanging a time slot with another time slot in one cycle of time-division multiplexed data where the above one cycle of data comprises a plurality of time-division multiplexed data respectively having a different da... | 11/20/1990 |
| 4972510 | Method and apparatus for squelching dependent on detected bond rate to reduce unwanted audible noise on a mixed voice data channel Unwanted audible noise on a mixed voice data channel is reduced by disabling an audio output device in a radio receiver or transceiver when the receiver determines that the RF signal received contains binary digital bit data. Alternatively, the receiver e... | 11/20/1990 |
| 4967405 | System for cross-connecting high speed digital SONET signals A modular, expandable, non-blocking system for cross-connecting high speed digital signals is provided. The system is capable of connecting DSn, CEPTn, and STSn signals as desired, with lower rate signals being included as components of the high-rate sign... | 10/30/1990 |
| 4965789 | Multi-rate voice encoding method and device The voice signal s(n) is filtered through a short-term predictive filter (13) tuned with PARCOR derived coefficients computed over a pre-emphasized s(n), said filter (13) providing a short-term residual r(n). Said r(n) signal is then processed through a f... | 10/23/1990 |
| 4958342 | Adaptive digital network interface A multiplexing data communication system (10) provides for communication between a plurality of microcomputer terminals (12) with a host computer (30). Communications from the microcomputer (12) are multiplexed over a T1 line (26) between two DMI interfac... | 09/18/1990 |
| 4954965 | Enhanced frame utilization for CSMA/CD communication protocol In a CSMA/CD communication protocol, data to be sent from one device on a communication network to another is put into frames, or predetermined sized pieces of information. One of the fields in a frame, the pad field, is used to make the total size of the... | 09/04/1990 |
| 4953180 | Bit rate adaptation system for digital transmission systems A rate adaptation system for adapting the rate of a communication stream between a first communication device (TE) and a second communication device (NT). The first communication device transmits and receives data at a first given rate and the second comm... | 08/28/1990 |
| 4935920 | Drop/insert processing circuit Disclosed is a drop/insert processing circuit connected to, for example, a broadband subscriber network including a high speed data loop. The circuit is formed in one body comprising a single shift register, a single clock signal generator, a low speed da... | 06/19/1990 |
| 4926448 | Method and apparatus for implementing an escape sequence A multi-port message buffer which is responsive to an escape sequence. A control unit controls whether the message buffer is in a transparent mode or a command mode with respect to a particular port. The control unit monitors a data port for the escape se... | 05/15/1990 |
| 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 |
| 4922438 | Method and apparatus for reading packet-oriented data signals into and out of a buffer A method and apparatus for controlling read-in and read-out of serial or parallel packet-oriented data signals with respect to a buffer in a communication terminal provides for the identification of a packet start bit combination in incoming packet-orient... | 05/01/1990 |
| 4910794 | Mobile radio data communication system and method In an exemplary embodiment, a test pattern is sent by a base station at a suitable point in a communications protocol. According to the evaluation of the test pattern transmission, a relatively high data rate or a lower more conservative data rate is sele... | 03/20/1990 |
| 4908823 | Hybrid communications link adapter incorporating input/output and data communications technology There is disclosed a data communications link adapter providing flow of data control and status information between an input/output (I/O) Backplane and a fiber optic Frontplane. The adapter represents a melding of I/O channel extender technology and data ... | 03/13/1990 |
| 4897841 | System and method for bridging local area networks using concurrent broadband channels Local area networks are interconnected through bridging devices by a backbone network having a plurality of broadband channels. The bridges encapsulate local area network messages within backbone network messages which are addressed to specific bridges. T... | 01/30/1990 |
| 4894847 | High speed half duplex modem with fast turnaround protocol A modem with improved signal processing and handshaking capabilities as described. Two digital signal processors are used to perform independent, concurrent operations so that a faster execution rate is obtained and more precise calculations are made poss... | 01/16/1990 |
| 4890303 | Method and circuit for synchronizing a digital data transmission system with a network-external clock Method and apparatus for synchronizing local clocks at each of two data stations. The first data station is connected through an analog network to an interworking unit. The second data station is connected through an integrated services network having a c... | 12/26/1989 |
| 4890282 | Mixed mode compression for data transmission In an integrated digital network with at least three nodes, A, B, and C, a call placed at node A to be transmitted through the network from node A to node B to node C, is compressed in multiple modes. In response to the path selected, the speech signal in... | 12/26/1989 |
| 4884267 | TDM transmission system A time division multiplex transmission system includes: a time division multiplex encoder for supplying a master clock to a plurality of PCM digital signal sources having a same sampling frequency and a same quantization bit number to effect clock synchro... | 11/28/1989 |
| 4882727 | Adaptive digital network interface A multiplexing data commmunication system (10) provides for communication between a plurality of microcomputer terminals (12) with a host computer (30). Communications from the microcomputer (12) are multiplexed over a Tl line (26) between two DMI interfa... | 11/21/1989 |
| 4872073 | Apparatus for playback of magnetically recorded data having a variable input rate Data is received at a variable input rate and recorded on a longitudinal medium in the form of fixed length data blocks with variable length spacing between the blocks, utilizing a transducer mounted on a rotating scanner drum. The input data rate may cha... | 10/03/1989 |
| 4872163 | Contention mechanism for communication networks A contention mechanism is disclosed for a communication network that provides perfect scheduling to avoid collisions between packets from a cluster of M circuit boards connected to a communications bus. The contention mechanism includes a 2-phase contenti... | 10/03/1989 |
| 4858232 | Distributed switching system A switching system (10) configured in a ring topology (14) is disclosed. The system (10) causes one or more 125 microsecond isochronous frames (20) to circulate in the ring (14) at any given instant in time. A delay circuit (22) temporarily saves an oldes... | 08/15/1989 |
