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. 09, 2008
Filed:
Mar. 22, 2001
Harold Mattice, Gardnerville, NV (US);
Richard Wilder, Sparks, NV (US);
Theodore Gail, Sparks, NV (US);
Harold Mattice, Gardnerville, NV (US);
Richard Wilder, Sparks, NV (US);
Theodore Gail, Sparks, NV (US);
IGT, Reno, NV (US);
Abstract
A system controls access to plural devices with only four lines by grouping the devices in nodes, each node including a predetermined number of the devices and a local control circuit defining a shift register with positions respectively connected to the devices. The nodes are connected in series with a host controller, to form a system shift register. The nodes are serially addressed by a serial data message from a DATA OUT line of the host controller, which message includes M×N data bits followed by a strobe indicator, where N is the number of nodes and M is the number of devices at each node. All controllers are connected to a V+ line and a COMMON line and a RETURN line. The system register forms a fourth line, with one end connected to the host controller DATA OUT terminal and the other end connectable to the RETURN line.