(19)

(11)

EP 0 093 710 A1

(12)

(43) Date of publication: 16.11.1983 Bulletin 1983/46 (21) Application number: 82900169.0 (22) Date of filing: 16.11.1981

(51) International Patent Classification (IPC):  G06K 15/ 16( . ) (86) International application number: PCT/US1981/001511 (87) International publication number: WO 1983/001768 (26.05.1983 Gazette 1983/13)

(84) Designated Contracting States: AT CH DE FR GB LI LU NL (71) Applicant: Datapoint Corporation San Antonio Texas 78284 (US)	(72) Inventors: DAVIS, David R. San Antonio, TX 78251 (US) KLINE, Sherman S. San Antonio, TX 78231 (US) MONROE, David A. San Antonio, TX 78230 (US) TOMPKINS, Elliot N. San Antonio, TX 78230 (US) POOR, Victor D. San Antonio, TX 78229 (US)