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:
Jun. 15, 2004
Filed:
Apr. 18, 2001
William Smith, Lindenhurst, NY (US);
Telephonics Corporation, Farmingdale, NY (US);
Abstract
The present invention is primarily directed to rail car communication system and in particular communication system used to transfer data and voice communications from one car to another. The present invention has particular applicability for use in subway cars. A communication system using an E protocol is provided with an interface device which translates data received from a hardware device having, inter alia, a microprocessor and a universal asynchronous receiver transmitter (UART) used for serial communications such as COM . The asynchronous UART data is interfaced with the E channel. UART data transfers are usually done on a byte (8 bits) by byte basis but the present invention uses E timing and bit by bit communications. Additionally, data is normally sent at the data rate of the E channel not some other unrelated speed such as those used by a UART during serial communications. Also, the data is usually sent synchronously, like the E channel, not asynchronously, as with a UART.