公开(公告)号：US3582806A

公开(公告)日：1971-06-01

申请号：US3582806D

申请日：1968-12-12

Applicant: CIT ALCATEL

Inventor： DILY CLAUDE LE

IPC: G06G7/184 ,  H03H11/18 ,  H03F1/36

CPC classification number: G06G7/184 ,  H03H11/18

Abstract: Quadripole capable of yielding a quadrature in a very wide band, or a phase displacement other than 90* in a fairly wide band, essentially comprising a differential amplifier connected to an RC integrator network mounted in the negative feedback loop, and an RC differentiator network mounted in the input circuit.

公开(公告)号：FR2370396A1

公开(公告)日：1978-06-02

申请号：FR7633752

申请日：1976-11-09

Applicant: CIT ALCATEL

Inventor： DILY CLAUDE LE ,  FAYE JEAN-CLAUDE

IPC: H04L25/03 ,  H04L7/04 ,  H03K

Abstract: The invention consists in an equalization system with two sections, one at each end of a transmission channel. The section at the transmission end adds control signals to information signals to be transmitted over the line. The section at the reception end generates control signals identical to those added at the transmission end and in phase with the control signals received over the transmission channel, which are separated from the received information signals by means of a first transversal filter with controllable weighting coefficients, the reciprocal transfer function of the transmission channel being synthesized from the locally generated and the received control signals by means of a second transversal filter with controllable weighting coefficients, equalization being achieved by means of a third transversal filter with the same design and same weighting coefficients as the second transversal filter. The invention is applicable to the transmission of data over telephone lines.

公开(公告)号：FR1517023A

公开(公告)日：1968-02-05

申请号：FR93280

申请日：1967-01-31

Applicant: CIT ALCATEL

Inventor： LEVASSEUR GEORGES ,  DILY CLAUDE LE

IPC: G06G7/24

公开(公告)号：FR2348609A1

公开(公告)日：1977-11-10

申请号：FR7611299

申请日：1976-04-16

Applicant: CIT ALCATEL

Inventor： DILY CLAUDE LE ,  FERRET FRANCOIS

IPC: H04B1/58 ,  H04B3/04

Abstract: Convergence between a two way telephone line and two pairs of unidirectional lines insuring a first degree of weakening between the two pairs of lines and a lesser degree of weakening between the two way line and each of the two pairs of lines, is controlled by a pair of transistors (7) (12), and an emitting resistance (11). The pairs of one way wires are connected from (3) to (6). The two way wire is connected across terminals (1) and (2) at opposite ends of a transformer (21). The other winding of the transformer is connected between a terminal (16) connected via resistors (10, 15) to the emitters of the two transistors and the negative supply voltage (-V) via a further resistance (11).

公开(公告)号：DE2749099A1

公开(公告)日：1978-05-18

申请号：DE2749099

申请日：1977-11-02

Applicant: CIT ALCATEL

Inventor： DILY CLAUDE LE ,  FAYE JEAN-CLAUDE

IPC: H04L25/03 ,  H03H7/14

Abstract: The invention consists in an equalization system with two sections, one at each end of a transmission channel. The section at the transmission end adds control signals to information signals to be transmitted over the line. The section at the reception end generates control signals identical to those added at the transmission end and in phase with the control signals received over the transmission channel, which are separated from the received information signals by means of a first transversal filter with controllable weighting coefficients, the reciprocal transfer function of the transmission channel being synthesized from the locally generated and the received control signals by means of a second transversal filter with controllable weighting coefficients, equalization being achieved by means of a third transversal filter with the same design and same weighting coefficients as the second transversal filter. The invention is applicable to the transmission of data over telephone lines.

公开(公告)号：DE1925161A1

公开(公告)日：1970-02-19

申请号：DE1925161

申请日：1969-05-16

Applicant: CIT ALCATEL

Inventor： DILY CLAUDE LE

IPC: G06G7/16