Communications: electrical – Continuously variable indicating – With meter reading
Patent
1986-05-22
1988-04-19
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
370 85, H04Q 900
Patent
active
047393238
ABSTRACT:
The aim of the Chrysler Collision Detector (CCD) Bus System is to allow multiple microprocessors to easily communicate with each other over a common pair of wires (called a bus) using a scheme similar to a telephone party line. All microprocessors connected to the bus are able to receive all messages transmitted on the bus. Any microprocessor with a message to transmit on the bus waits until any current user is finished before attempting to use it. Whenever the bus is available, its use is allocated on a first-come, first serve basis (i.e., whichever microprocessor first begins transmitting its message on the bus after any previous message finishes gets the use of the bus). If, however, multiple microprocessors attempt to begin transmitting their messages on the bus at exactly the same time, then the message with the highest priority wins the use of the bus. All messages have unique message priority values and each message is transmitted by only one microprocessor. The subject invention provides the ability to communicate with a SCI port, a SPI port or a buffered SPI port. This allows communication with any device configured with any one of these ports, all on the same bus.
REFERENCES:
patent: 4281380 (1981-07-01), Demesa, III et al.
patent: 4409592 (1983-10-01), Hunt
patent: 4429384 (1984-01-01), Kaplinsky
patent: 4434421 (1984-02-01), Baker et al.
patent: 4470110 (1984-09-01), Chiarottino et al.
patent: 4472712 (1984-09-01), Ault et al.
patent: 4628311 (1986-12-01), Milling
IEEE publication "Automotive Applications of Microprocessors", 1984; Paper No. CH2072-7/84/0000-0083, A Data Link for Agriculture and Off Highway Communications, by Boyd Nichols, Uijay Dharia and Kanaparty Rao.
SAE Information Report, "J1567 Collision Detection Serial Data Communications Multiplex Bus", Frederick O. R. Miesterfeld, May 23, 1986.
A. Bozzini, et al "Serial Bus Structures for Automotive Applications", SAE Technical Paper Series, 830536, Feb. 28-Mar. 4, 1983.
F. Miestefeld, "Chrysler Collision Detection (C.sup.2 D)-A Revolutionary Vehicle Network", SAE Technical Paper Series, 860389, Feb. 24-28, 1986.
F. Phail et al, "In Vehicle Networking-Serial Communication Requirements and Directions", SAE Technical Paper Series, 860390, Feb. 24-28, 1986.
R. Mitchell, "A Small Area Network for Cars", 840317, SAE Technical Paper Series, 1984.
Fassnacht Ronald E.
McCambridge John M.
Miesterfeld Frederick O. R.
Nasiadka Jerry M.
Calcaterra Mark P.
Chrysler Motors Corporation
Yusko Donald J.
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