The Singer Company

Other

Wang Laboratories, Inc.

Frederick A Rupinski

John Vernon Landau, Jr

Barney D Hunts

Alfred John Zenger

Alfred M Nelson

Houshang Rasekhi

William Kahan

Howard David Rogers

Walter B Hatfield, Jr

James P Johnston

Stuart B Rauch

The BASEBAND VIDEO/AUDIO/DATA TRANSCEIVER invention simultaneously transmits and receives baseband video signals, audio signals, and associated digital data and control signals within a single continuous signal over a single physical transmission line. The device is a single cohesive module, best embodied as an integrated circuit. The audio signals are sampled, and subsequently reconstructed. Audio samples and digital signals are multiplexed, then fed to a multirate elastic buffer. The multiplexed signals are extracted from the elastic buffer coincidentally with the video signal horizontal synchronization pulses and applied to these same pulses, then placed on a channel having a similar transceiver at the other end. The transceiver invention separates the received signals from the transmission line by canceling out its own transmitted signal. The received audio and digital data bursts are culled and reshaped. The video signal horizontal synchronization pulses are simultaneously restored to the received baseband video signal. The culled bursts are fed to a second multirate elastic buffer in synchronism with received video signal horizontal synchronization pulses. The culled multiplexed signals are extracted from the second elastic buffer at a constant reconstruction rate, demultiplexed, and then reconstructed. The transceiver timing and synchronization are controlled by two phase locked loops, one for transmitter timing and one for receiver timing, each with its own clock counting chain. The transmitter loop is locked to the transmitted video signal horizontal synchronization pulses, while the receiver loop is locked to the received video signal horizontal synchronization pulses.

Baseband video/audio/data transceiver

There is provided improvements in magnetic recording head arrangements, such as may employ multiplexing, which provide substantially higher speeds of recording and require fewer components. The recording head is comprised of a compact, four-layer laminate structure mountable on a supporting substrate, in which the entire array of recording elements forms a flexible, uniquely arranged first layer, the return paths of the recording elements comprise a flexible second layer which has the dual utility of substantially reducing the recording element circuit inductance, the third layer is a rigid printed circuit board structure providing a mount for the blocking diodes and the conductive paths of the associated multiplexing scheme, and the fourth layer is a ground plane located between the first and third layers and insulated therefrom for further reducing the inductance associated to the circuitry of the first layer and for substantially minimizing the circuit inductance of the third layer.

Magnetic recording heads

A programmable sewing machine adapted to learn and store, in Automatic Learn or Key Learn Modes of operation, a series of sewing machine operations for later automatic duplication, in an Automatic Sew Mode of operation, at the same sewing rate as the initial operation, or at the peak sewing rate achieved during each operation; or, in a Control Sew Mode of operation at a controlled lower speed. A software program enables the speed profile of an initial sewing operation to be stored in memory as a number (at least one) of pseudo segments of variable time duration. Each pseudo segment has a fixed sewing speed associated therewith. By applying these stored speed values to a digital to analog converter and applying the resulting voltage to the sewing machine drive motor, the speed profile recorded can be substantially faithfully duplicated. The automatic operation of the sewing machine may be interrupted to go into a Repair Mode during which the sewing machine may be operated manually, and, on proper command, to revert back to the Automatic Sew Mode at the particular operation which was interrupted. A Quit control is provided which permits reversion to an Initialization Mode from which a specific mode of operation may be selected. Provision is made to Erase specific learned and stored series of sewing machine operations, and to warn when the storage capacity may be exceeded.

Programmable variable speed for sewing machine

A programmable industrial sewing machine adapted to learn and store, in Automatic Learn or Key Learn Modes of operation, a series of sewing machine operations for later automatic duplication. In both modes of operation provision is made for an operator to select the number of initial and final locking stitches prior to commencing stitching operations. Operator actuated controls, such as knee shift device and foot treadle, operate identically in both Learn Modes of operation and as they would operate in a normal manual industrial sewing machine. In the Automatic Learn Mode of operation, a record is compiled in segments, consisting each of a stitch count, a pivot delay time, and a speed copy. In appropriate circumstance, the pivot delay time may be zero. Various positions of the foot treadle, including the neutral and heel position, elicit an appropriate response by means of a computer to effect a recording of a logical series of stitching operations for later automatic reproduction with operator guidance of a work material. In the Key Learn Mode of operation, provision is made for operator imposition of sewing speeds and pivot delay times to facilitate, for example, a rapid record production for automatic operation of the sewing machine at a slower rate of speed with an inexperienced operator.

Programmable sewing machine

A programmable sewing machine adapted to learn and store, in Automatic Learn or Key Learn Modes of operation, a series of sewing machine operations for later automatic duplication, in an Automatic Sew Mode of operation, at the same sewing rate as the initial operation, or at the peak sewing rate achieved during each operation; or, in a Control Sew Mode of operation, at a controlled lower speed. Additionally, the machine operation may be limited in a Set Up Mode to preset rates for machine speed, copy or peak speed automatic operation, number of start stitches, number of stop stitches, start speed and stop speed. The machine may be operated in the Manual Mode with provision for first tack and last tack and thread trim and wipe when desired. The automatic operation of the sewing machine may be interrupted to go into a Repair Mode during which the sewing machine may be operated manually, and, on proper command, to revert back to the Automatic Sew Mode at the particular operation which was interrupted. A Quit control is provided which permits reversion to an Initialization Mode from which a specific mode of operation may be selected. Provision is made to Erase specific learned and stored series of sewing machine operations, and to warn when the storage capacity may be exceeded.

Programmable sewing machine operable in a plurality of modes

A programmable industrial sewing machine adapted to learn and store a series of sewing machine operations for later automatic duplication, in an Automatic Sew Mode of operation, at the same sewing rate as the initial operation, or at a peak sewing rate achieved during each operation; or, in a Control Sew Mode of operation at a controlled lower sew speed. The automatic operation of the sewing machine may be interrupted in order to vary the sew speed, and will revert to automatic operation on operator command where the interruption took place. In the Automatic Sew Mode of operation, stitching may also be interrupted to vary a prior pivot delay time, i.e. a time duration with the presser foot elevated and the sewing needle in a lowered position through a work material. Again, stitching will be reinitiated on operator command at the point at which interrupted. In the Control Sew Mode of operation, stitching is interrupted at each pivot delay and requires manipulation of a foot treadle by an operator in order to resume stitching. Thus, the length of the pivot delay in the Control Sew Mode of operation is under operator control. In both the Automatic Sew Mode of operation and the Control Sew Mode of operation, the automatic operation of the sewing machine may be interrupted to go into a Repair Mode during which the sewing machine may be operated manually, and, on proper command reverts back to the mode from which it came at the particular operation which was interrupted. During each pivot delay, in either the Automatic Sew or Control Sew Modes of operation, the prior completed switch count may be modified in order to compensate for any variables in, for example, a work material.

Automatic stitching by programmable sewing machine

The carriage of a home knitting machine is provided with a reader operable independently of any movement of the carriage of the machine for reading out patterning instructions on a programmed card prior to knitting, an electronic memory for storing the signals read from the card, and means for recalling the stored signals from the memory in synchronization with movement of the carriage during knitting and for causing the operation of needle selectors on the carriage in accordance with the recalled signals to provide for the formation in a fabric of a pattern defined on the card.

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Lyndhurst, NJ, United States of America

Frederick A Rupinski