公开(公告)号：US3593296A

公开(公告)日：1971-07-13

申请号：US3593296D

申请日：1969-04-28

Applicant: INT STANDARD ELECTRIC CORP

Inventor： GIRARD PIERRE ,  LEGER MARC JEAN PIERRE ,  LEROUGE CLAUDE PAUL HENRI ,  JEAN JACQUES HENRI DE

IPC: H03K3/356 ,  H03K17/693 ,  H04Q3/52

CPC classification number: H04Q3/521 ,  H03K3/356017 ,  H03K17/693

Abstract: An electronic multiselector employs metal-oxide-silicon FET transistors in logic circuits comprising NOR gates and inverters. Horizontal selection signals are delivered by a shift register which provides line scanning in a selection stage.

公开(公告)号：US3588385A

公开(公告)日：1971-06-28

申请号：US3588385D

申请日：1967-05-02

Applicant: INT STANDARD ELECTRIC CORP

Inventor： MOYE LAURENCE STANLEY

IPC: H04B3/23 ,  H04B3/22

CPC classification number: H04B3/23

Abstract: THE INVENTION CANCELS ECHOES IN EXTREMELY LONG DISTANT TRANSMISSION CHANNELS. AN ELECTRICAL SIGNAL WHICH IS EQUIVALENT TO THE ECHO IS GENERATED, INVERTED, AND ADDED TO A SIGNAL BEING RECEIVED. THEREFORE, THE EQUIVALENT ECHO SIGNAL CANCELS THE READ ECHO SIGNAL.

公开(公告)号：US3588373A

公开(公告)日：1971-06-28

申请号：US3588373D

申请日：1968-01-18

Applicant: INT STANDARD ELECTRIC CORP

Inventor： THYSSENS GUIDO MARIA JOSEPHA B

IPC: H04M7/10 ,  H04Q1/453 ,  H04M1/50 ,  H04Q9/12

CPC classification number: H04Q1/453

Abstract: A MULTIFREQUENCY SIGNAL TRANSMISSION SYSTEM WHEREIN THE SENDING STATION INCLUDES N FREQUENCY GENERATORS EACH HAVING A DIFFERENT FREQUENCY. EACH OF M REGISTERS ARE COUPLED IN COMMON TO THE N FREQUENCY GENERATORS. EACH OF THE M REGISTERS INCLUDE N LONGTAIL TRANSISTOR PAIRS EACH COUPLED TO A DIFFERENT ONE OF THE N GENERATORS. THE LONGTAIL TRANSISTOR PAIRS OF AN ASSOCIATED REGISTER EACH HAVE THEIR OUTPUTS COUPLED TO A COMMON TRANSMISSION LINE. BISTABLE DEVICES ARE COUPLED TO EACH OF THE LONGTAIL TRANSISTOR PAIRS OF EACH REGISTER FOR ACTIVATION OF THE LONGTAIL TRANSISTOR PAIR TO COUPLE A GIVEN NUMBER OF THE N GENERATORS TO THE ASSOCIATED COMMON TRANSMISSION.

公开(公告)号：US3587000A

公开(公告)日：1971-06-22

申请号：US3587000D

申请日：1968-11-27

Applicant: INT STANDARD ELECTRIC CORP

Inventor： HEEKS JOHN STUART

IPC: G11C11/34 ,  H01L47/00 ,  H03B7/06

CPC classification number: G11C11/34 ,  H01L47/00

Abstract: This is a semiconductor device consisting of a material which exhibits high field instability effects when a potential which exceeds a critical value is applied across the device. Electronic means to vary the conductivity profile along the domain path is provided by having rectifying junctions along the side of the device to vary the minority carrier injections from one or more of the localized PN-junctions.

公开(公告)号：US3586146A

公开(公告)日：1971-06-22

申请号：US3586146D

申请日：1969-05-26

Applicant: INT STANDARD ELECTRIC CORP

Inventor： HEIRBAUT EDMOND MARIE ,  FABRE RAYMOND FRANICS ADRIAN ,  CAMPS JOSEPHUS ,  HENRICUS KAREL ,  MEES MICHAEL MARCEL

IPC: G07F5/22 ,  H04M17/02 ,  G07F9/02

CPC classification number: G07F5/22 ,  H04M17/02

Abstract: A coin mechanism for producing one or more pulses responsive to a coin having been received into the mechanism. The number of pulses is representative of the value of the coin received. Coins of different values are channelled into different paths, each path holding its coin for a sufficiently long period of time to allow the correct number of value indicating pulses to be transmitted.

公开(公告)号：US3585512A

公开(公告)日：1971-06-15

申请号：US3585512D

申请日：1969-05-13

Applicant: INT STANDARD ELECTRIC CORP

Inventor： GASSMANN GERHARD GUNTER

IPC: H03K9/06 ,  H03D3/00

CPC classification number: H03K9/06

Abstract: To eliminate the effects of noise width modulations, the input FM pulse signals are applied to a PNP transistor the duration of whose output pulses is each extended for a period equal to the ''''turnoff'''' time. These extended pulses are combined in an AND gate with the input pulse signals leaving pulses of a constant width equal to the ''''turnoff'''' time. The latter pulses are applied to an NPN transistor whose ''''turnoff'''' time (storage time + fall time) after each pulse is such that the leading edge of the next pulse coincides with some point on the current fall time (voltage rise time) in the NPN-transistor which point varies with the pulse frequency. Frequency centering of the discriminator is accomplished by feeding back the integrated output voltage to the base of the second-mentioned transistor to control its ''''turnoff'''' time.

公开(公告)号：US3582596A

公开(公告)日：1971-06-01

申请号：US3582596D

申请日：1969-05-15

Applicant: INT STANDARD ELECTRIC CORP

Inventor： WOODHEAD HARRY STANLEY

IPC: H01H13/20 ,  H01H13/12 ,  H01H36/00 ,  H01B13/00

CPC classification number: H01H36/004

Abstract: Pushbutton diaphragm switches are provided. Switch contacts in a hermetically sealed environment are energized by changes in magnetic fields caused by motion of a permanent magnet under control of a pushbutton. A pushbutton spring may be dispensed with and magnetic attraction may be relied upon to provide the necessary restoring force.

公开(公告)号：US3581018A

公开(公告)日：1971-05-25

申请号：US3581018D

申请日：1969-06-12

Applicant: INT STANDARD ELECTRIC CORP

Inventor： HARLAND GEOFFREY ,  RONAYNE JOHN P

IPC: H04Q3/54 ,  H04Q3/00

CPC classification number: H04Q3/54

Abstract: A telecommunications exchange in which connections are set up through cascaded stages (designated A, B, C & D) of coordinate switching matrices. Certain of the stages are paired in two-stage networks, and a number of these networks (four are disclosed) are used. The intermediate stages (B and C) of a four stage exchange are paired, and certain of the B stage switches handle only calls to and from lines, and others handle only calls to and from junctions. The third or C stage mixes calls involved in traffic of either type. The switches of the final or D stage are used only between one side of the links and the switches of the C stage.

公开(公告)号：US3581013A

公开(公告)日：1971-05-25

申请号：US3581013D

申请日：1968-12-19

Applicant: INT STANDARD ELECTRIC CORP

Inventor： MULLER JEAN JACQUES

IPC: H04W36/00 ,  H04W68/00

CPC classification number: H04W72/06 ,  H04W36/00 ,  H04W68/00 ,  H04W84/027

Abstract: A mobile telephone system is provided with radio telephone and paging equipment which is serviced over a group of channels allotted to a fixed radio telephone station. The latter provides automatic communication between the customers of a public telephone ground network and mobile sets. A free channel is marked by a tone, to be taken in a telephone call. Paging call numbers directed to paging mobile sets are transmitted from the station if the required channel is free. If the channel is not free, these paging calls alternate with the radiotelephone communications. In order to more effectively use the equipment, the called paging numbers are stored and then transmitted in limited trains of numbers.

公开(公告)号：US3578917A

公开(公告)日：1971-05-18

申请号：US3578917D

申请日：1969-06-16

Applicant: INT STANDARD ELECTRIC CORP

Inventor： GRANDJEAN CHARLES HENRI EMILE ,  PERRAULT JEAN

IPC: H04Q3/545

CPC classification number: H04Q3/545

Abstract: In a telephone exchange comprising a central processor serving several satellite exchanges, a satellite is completely blocked when the cable which connects it to the processor is out of order. According to the invention, each pair of satellites is interconnected by means of a single communication channel so that the transfer of data between the processor and the satellite whose cable is out of order may be effected via another satellite.