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US 5,495,503 AGranted
Storage battery memory and communication device
AssigneeHobart Brothers Company
InventorsStephen R. King, Thomas M. Bolka
Life of this patent
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AssigneeHobart Brothers Company
InventorsStephen R. King, Thomas M. Bolka
Estimating the term…
A memory device connected to a storage battery stores a battery identification code and other data such as present and maximum temperature and voltage, and information concerning the vehicle on which the battery is used. Information transfer between the battery memory device and a charger is done through the battery cables, eliminating the need for special connections. A high power, low energy pulse imposed on the battery leads may be detected at each end of the cables, in spite of the low impedance nature of large lead acid batteries. A method and apparatus for transmitting data on a pair of battery cables includes transmitting each data pulse as a plurality of short duration pulses whereby each short duration pulse is created by momentarily imposing a high power, low energy pulse at one end of the cables. These pulses are detected at the other end of the cables and are applied to a resettable multivibrator having a output pulse width slightly greater than the interval between said short duration pulses. If the output of the multivibrator is continuous during a predetermined period, a valid data pulse is recognized.
A method of transmitting a data pulse representing the logic level "one" over a pair of cables wherein one end of said cables is connected to the terminals of a low impedance battery and the other end thereof is connected to a remote device, said cables otherwise being used either to charge the battery or to supply power to a load, the method including the steps of
A method of transmitting a data pulse representing the logic level "one" over a pair of cables connected to a low impedance battery load, the method including the steps of
A method of sending a data pulse over low impedance cables between the terminals of a battery and a remote device, said cables otherwise being used either to charge the battery or to supply power to a load, the method comprising the steps of
A method of transmitting a pulse across a pair of cables connected to the terminals of a low impedance battery from one end thereof to the other end thereof, wherein one end of said cables is connected to the battery and the other end is connected to a remote device, said cables otherwise being used either to charge the battery or to supply power to a load, the method including the steps of
An apparatus for transmitting a pulse across a pair of cables, said apparatus including
A method of transmitting a pulse across a pair of cables, the method including the steps of
A method of transmitting a pulse across a pair of cables, the method including the steps of
An interface circuit for use in connection with a battery identification device connected across the terminals of a low impedance battery, said circuit comprising
Dependencies are inferred from the claim text.