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| Number | Title | Issue Date |
| 4694473 | Data communication system with block synchronization data in mobile radio A block synchronization data communication system enables data communication to be properly effected even through a transmission channel under an extremely unfavorable conditions as in mobile radio such as automobiles. The block synchronization data commu... | 09/15/1987 |
| 4688218 | Multiplex channels for continuous flow for numerical signal A digital data pack transmission system is especially--but not exclusiveluseful in videotex or teletext transmission (i.e. videotext or teletext data is transmitted during intervals between segments of video signals). The inventive system uses a continuo... | 08/18/1987 |
| 4592050 | Apparatus and method for providing a transparent interface across a satellite communications link A mechanism is disclosed for a time division multiple access communications network, to enable the synchronizing of traffic messages between a transmitting and a receiving node. A transmit clock mechanism at the transmitting node includes a slip counter f... | 05/27/1986 |
| 4562574 | Frame synchronizing signal insertion system A frame synchronizing signal insertion system at a transmitting end has a plurality of multiplexers. Frequency-divided frame synchronizing signals are produced by frame pattern generators of the plurality of multiplexers, respectively. These frequency-div... | 12/31/1985 |
| 4535452 | Multi-modem variable port demultiplexer synchronization adapter This invention discloses a demultiplexer with a first memory element for storing received data bits, a second memory element having individual cells connected to individual remote units (i.e. parallel output) and a logic unit for transferring the appropri... | 08/13/1985 |
| 4507779 | Medium speed multiples data Synchronization can be acquired between a transmitting node and a receiving node on a time division multiple access communication link without the necessity for additional data bits in the data stream, by correlating the number of errors detected in any i... | 03/26/1985 |
| 4498167 | TDM Communication system A time division multiplex digital data communication system with reduced band width. The system operates on independent digital signals so they can be multiplexed by encoding the time of transition of the digital data on each channel and transmitting seri... | 02/05/1985 |
| 4344180 | Redundant word frame synchronization circuit A frame synchronization arrangement is disclosed for use in a digital data transmission system which utilizes a redundant data word transmission. A selected data word of each frame of data having a fixed location relative to the frame boundary is transmit... | 08/10/1982 |
| 4276642 | Process for the frame synchronization of a time division multiplex system A process is disclosed for frame synchronization in a time division multiplex system which, while ensuring a high degree of synchronization reliability, requires only a small transmission capacity. In accordance with the invention, before a synchronous st... | 06/30/1981 |
| 4213011 | Process for T.D.M. frame synchronization employing variable synchronizing words A process for T.D.M. frame synchronization which employs variable length synchronizing word at the receiving end and wherein the transmitter produces signals which consist of groups each comprising p bits and one marker bit and in respect to each multiple... | 07/15/1980 |
| 4142070 | False framing detector A framing circuit for a pulse code modulated, time multiplexed data receiver provides terminal framing by first detecting a predetermined terminal frame bit code and then checking for false framing by utilizing a false framing detector to count the number... | 02/27/1979 |
| 4063040 | High speed multiplexer and demultiplexer for pulse code channels For multiplexing 6 binary channels for example, two transcoders are respectively fed by the groups of input channels A, B, C and D, E, F in each of which is inserted a locking and identification word. Two three-channel frames in intermediate ternary form ... | 12/13/1977 |
| 4054753 | Double sync burst TDMA system A TDMA system in which each station times its respective data burst from a reference sync burst transmitted by a designated primary reference station over the satellite link. Another station transmits a secondary sync burst timed from the primary stations... | 10/18/1977 |
