-
公开(公告)号：US3855430A
公开(公告)日：1974-12-17
申请号：US30659572
申请日：1972-11-15
Applicant: INT STANDARD ELECTRIC CORP
Inventor： LEROUGE P , COLARDELLE J , GIRARD P
CPC classification number: H04B1/586 , H04M19/005
Abstract: An electronic hybrid circuit is disclosed for two-wire to fourwire conversion. Two integrated circuit differential amplifiers are used to provide transmission in each direction. Interconnections are possible between the amplifiers to insure cancellation of reflections from signals traveling in opposite directions.
Abstract translation: 公开了一种用于双线至四线转换的电子混合电路。 两个集成电路差分放大器用于在每个方向提供传输。 在放大器之间可以进行互连，以确保消除从相反方向行进的信号的反射。
-
2.发明授权Larity mode regenerative repeater for pcm signals transmitted in the alternate po 失效用于替代PO中传输的PCM信号的大型模式再生器
公开(公告)号：US3757051A
公开(公告)日：1973-09-04
申请号：US3757051D
申请日：1971-11-23
Applicant: INT STANDARD ELECTRIC CORP
CPC classification number: H04L25/242 , H04L25/4923
Abstract: A regenerative repeater for alternate polarity PCM signals is disclosed that does not require an equalizer or amplifier. The PCM signals are directly detected by (1) determining whether the slope of the pulse is greater or less than a reference value and (2) if its polarity is opposite to that of the preceding pulse. The detected signals are reshaped by a monostable multivibrator and are retimed by a phase-locked loop. The repeater is completely digital except for the slope comparator.
-
Search Results
2
records
(took 0.011 seconds)
