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. 17, 1989
Filed:
Jan. 13, 1986
Timothy P Near, Athens, GA (US);
Joseph J Cieri, Hood, VA (US);
Kenneth M Holet, Earlysville, VA (US);
General Electric Company, Charlottesville, VA (US);
Abstract
A method of determining access on an electronic serial bus by implicit token passing. The serial bus receives and transmits data between a plurality of devices. Each device has a receiver for receiving data to the serial bus, a transmitter for transmitting data to the serial bus, a bus idle timer for detecting an idle condition on the bus, and a bus access timer for controlling access to the serial bus. Each device is assigned a unique bus address. The bus access timer of each device is loaded with a value representative of each device's own unique bus address and the unique bus address of the transmitting device. The bus access timer starts a count upon receiving an end of transmission condition from the transmitting device and stops upon receiving a start of transmission condition from the transmitting device. When a bus access timer of a device reaches a predetermined value, the device of the timed out bus access timer is given access to the bus.