Number | Date | Country | Kind |
---|---|---|---|
81 00773 | Jan 1981 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
3142802 | Maure | Jul 1964 | |
3819853 | Stein | Jun 1974 | |
3961311 | Pavoni et al. | Jun 1976 | |
4131856 | Chapman | Dec 1978 | |
4166979 | Waggener | Sep 1979 | |
4208724 | Ruttlingourd | Jun 1980 | |
4302831 | Zemanek | Nov 1981 |
Entry |
---|
Elektronic, vol. 27, No. 2, 1978, W. Beifuss, "Digitale Phasensynchronisiereinheit Fur Synchrone Datenubertragung", pp. 52-56. |
1978 International Zurich Seminar on Digital Communications, Mar. 1978, T. Svensson: "Methods for Two-Wire Duplex Digital Transmission at 80 KBit/s on Subscriber Lines", pp. c5.1-c5.4. |