The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 1983
Filed:
Jan. 13, 1981
Hans Jacobsen, Taby, SE;
Micronic AB, Taby, SE;
Abstract
A communication link for transferring information from a data terminal with connected light pen (3), which includes a light diode (4) and a phototransistor (5) or corresponding means, to a greater computer unit. According to the invention, the communication link (1) includes an information transferring device, which according to a first embodiment comprises a phototransistor (11). The light pen (3) is arranged so as by means of its light diode (4) to emit light corresponding to information stored in the data terminal (10), which information is converted via the phototransistor (11) to electric signals and transferred to the greater computer unit. According to a second embodiment, the information transferring device also includes a light diode (16), which is arranged so as to emit light pulses corresponding to instructions to the data terminal (10) arriving from a greater computer unit. The phototransistor (5) of the light pen (3) is arranged so as to convert said last mentioned pulses to electric signals and to transfer the same to the data terminal (10).