| 4264781 |
Apparatus for encoding and decoding data signals |
| Apr-28-1981 |
An encoder/decoder is provided having two random bit generators which are cross-coupled in the Encoding mode with the data signal being directed to the input of each random bit generator. The data signal... |
| 4214206 |
Digital transmission system having direct bit extraction from scrambled bit streams |
| Jul-22-1980 |
Direct bit extraction from a scrambled bit stream for a digital transmission system in which a bit stream is divided into consecutive transmission frames, extra bits are inserted in given bit position... |
| 4150404 |
Device for transferring digital information |
| Apr-17-1979 |
A data recording device having a coding device which is supplied with a sequence of information bits to be recorded. The coding device forms coded information words of at least two different lengths from... |
| 4109856 |
Method for transmitting binary signals |
| Aug-29-1978 |
Method and device for transmitting binary signals by means of digital self-synchronizing scramblers, the information of the storage elements used being utilized, in combination with that of the input signal,... |
| 4071692 |
Data transmission systems |
| Jan-31-1978 |
Intelligence is conveyed in a PCM bit stream form with alternate bits being inverted. Additional information is conveyed by violations of the alternate bit rule so that two successive bits have the same... |
| 3988538 |
Digital data scrambler and descrambler |
| Oct-26-1976 |
A digital data scrambler and descrambler for m parallel synchronized digital data streams, where m is an integer greater than one, is disclosed. The scrambler and descrambler each include m linear sequential... |
| 3978407 |
Fast start-up adaptive equalizer communication system using two data transmission rates |
| Aug-31-1976 |
Initial Adjustment of a receiver having an automatic adaptive equalizer in a modem communication system is accomplished by employing a data transmission rate lower than normal for an early segment of each... |
| 3931472 |
Asynchronous quadriphase communications system and method |
| Jan-6-1976 |
A communications system and method for transmitting and receiving two independently timed (asynchronous) binary data signals on a quadriphase carrier. The four phase ambiguity ordinarily resulting from... |
