Cable connection between a PC and a sewing machine

Details Cable connection between a PC and a sewing machine Cable connection between a PC and a sewing machine

1992-10-27

1995-03-28

Westin, Edward P.

Electronic digital logic circuitry

Interface

Logic level shifting

H03K 190175

Patent

active

054020158

ABSTRACT:
A cable connection between a PC and a sewing machine for transmitting data in the form of different voltage levels, wherein the cable connection for connection to the PC has an RS 232 C port and the sewing machine has a TTL port. A level converter is integrated in the cable connection, preferably in the connection jack to the RS 232 C port. The level converter has a switching transistor controllable by the sending pole of the TTL port and a switching transistor controllable by the sending pole of the 232 port for connecting the corresponding receiving pole to a voltage potential which it is able to receive.

REFERENCES:
patent: 4996453 (1991-02-01), Zanders et al.
patent: 5047663 (1991-09-01), Lee et al.
patent: 5260612 (1993-11-01), Lehmann et al.
Sharp Organizer Link 02-791A Operation Manual, pp. 1-4, 1989, Sharp Electronics Corporation.
Mektron GmbH, Elektronik, May 29, 1987, p. 179.

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