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:
Jan. 02, 1990
Filed:
Jan. 08, 1987
Akitoshi Aritaka, Kasuga, JP;
Norio Komaki, Kurume, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A data terminal device, having a plurality of protocols stored therein, has a data transmitting mode and a data receiving mode. When in a transmitting mode, the terminal device transmits to another data terminal initial data according to one of the protocols. The terminal device then awaits a feed back signal from the other terminal device. If a feed back signal is received, the terminal device transmits the data. If no feed back signal is received, the terminal device transmits a break signal which indicates that a change in receiving protocol is required. When in a receiving mode, the terminal device receives data according to one of the protocols. If data is received having the same protocol as that of the receiver of the terminal device, a feed back signal is transmitted to the other terminal device. If the data protocol received is different, no feed back signal is transmitted, and the terminal device awaits a break signal indicating that change in receiving protocol is required.