Electronic postage meter radiant energy device circuit
First Claim
1. A radiant energy system, comprising:
- radiant energy receiving means for receiving radiant energy and converting received radiant energy into electrical signals;
current amplifying means coupled to said radiant energy receiving means;
voltage comparator means coupled to said current amplifying means and providing an output signal; and
information processing means coupled to said voltage comparator means for processing the output signal information from said voltage comparator means.
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Accused Products
Abstract
A radiant energy system includes an energy receiving member for receiving energy and for converting received energy into electrical signals. Current amplifying means are coupled to the radiant energy receiving member. Voltage comparator means are coupled to the current amplifying means to compare the voltage developed by the current amplifying means to a reference voltage. The comparator provides an output signal indicative of whether the voltage applied to the comparator input is sufficient to actuate the circuit. The output characteristics of the comparator can be selected to be consistent with TTL and data processing circuit drive requirements. The system is suitable for use wherein the radiant energy devices are employed as position indicators for moveable parts and or electrical isolation of postage meters.
18 Citations
19 Claims
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1. A radiant energy system, comprising:
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radiant energy receiving means for receiving radiant energy and converting received radiant energy into electrical signals; current amplifying means coupled to said radiant energy receiving means; voltage comparator means coupled to said current amplifying means and providing an output signal; and information processing means coupled to said voltage comparator means for processing the output signal information from said voltage comparator means. - View Dependent Claims (2, 3, 4, 5)
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6. An energy system, comprising:
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an energy receiving means for receiving energy and converting received energy into electrical signals; a current amplifying means having an input terminal and an output terminal; means for coupling said energy receiving means to said current amplifying means input terminal; voltage comparator means having an input terminal and an output terminal; first impedance means connected between said circuit amplifying means output terminal and said voltage comparator input terminal; a first feedback impedance coupled between said current amplifying means input and output terminals; and a second feedback impedance coupled between said voltage comparator input and output terminals. - View Dependent Claims (7, 8, 9, 10)
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11. A postage meter, comprising:
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a printing section for printing postage; an accounting section for storing accounting information, an energy system coupled between said printing section and said accounting section and including; (1) an energy receiving means for receiving energy and converting received energy into electrical signals; (2) current amplifying means coupled to said energy receiving means; and (3) voltage comparator means coupled to said current amplifying means for providing output signals for said accounting section. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification