公开(公告)号：FR2414830A1

公开(公告)日：1979-08-10

申请号：FR7836583

申请日：1978-12-20

Applicant: IBM

Inventor： DUBIL JAMES F ,  FALCOZ ALAIN M ,  GLAISE RENE J ,  JACQUART CHRISTIAN A ,  LEIGHTON HOWARD N ,  RISO VLADIMIR ,  WILFINGER RAYMOND J

IPC: H03H15/02 ,  H03K

Abstract: This specification describes a charge-transfer device transversal filter chip in which an input signal is fed in parallel into a number of channels the outputs of which are summed together to provide the desired transversal filter transfer function. Each channel contains an analog shift register, a signal splitter and a polarity selector. The shift registers are of unequal length to provide a different delay thru each channel. The signal splitter provides a plurality of signal paths thru each channel while the polarity selector determines whether a given path in a given channel is added or subtracted in the summation to determine the gain of the given channel in the summation.

公开(公告)号：CA1075840A

公开(公告)日：1980-04-15

申请号：CA286484

申请日：1977-09-12

Applicant: IBM

Inventor： CROISIER ALAIN ,  JACQUART CHRISTIAN A

IPC: H04M19/00 ,  H04M3/02 ,  H04M11/06

Abstract: CIRCUIT FOR INTERFACING AN AUDIO FREQUENCY LINE TO CENTRAL UNIT An interface circuit interfacing an AF line to a central unit. This circuit makes use of an RF transformer mounted in such a way that the AF useful signal to be transmitted modulates an RF carrier generated in the primary winding of transformer and that the resulting modulated signal is demodulated (through DET) by a full wave rectifier and low pass filter in the secondary winding of the same before its being transmitted onto the line. FR9-76-004

公开(公告)号：FR2378332A1

公开(公告)日：1978-08-18

申请号：FR7737952

申请日：1977-12-09

Applicant: IBM

Inventor： JACQUART CHRISTIAN A ,  LEIGHTON HOWARD N ,  WILFINGER RAYMOND J

IPC: G11C27/04 ,  B61L7/08 ,  G11C19/18 ,  G11C19/28 ,  G11C27/00 ,  H01L21/33 ,  H01L21/339 ,  H01L27/105 ,  H01L29/70 ,  H01L29/762 ,  H01L29/78 ,  H03H7/30 ,  H03H15/02 ,  H03M1/00 ,  H03K13/02 ,  H03K