System and method for programming a weighing scale using a key signal to enter a programming mode
First Claim
1. A system, comprising:
- a weighing scale having weighing functionality controlled by an operating parameter and having stored thereon a plurality of differing values of the operating parameter, said weighing scale having a controller operatively configured to enter a programming mode so as to allow a programmer to set a value of the operating parameter by electronically selecting from among the plurality of differing values stored on said weighing scale;
wherein;
said weighing scale further includes a power port for receiving external electrical power for powering said weighing scale during use of the weighing functionality and said controller is responsive to a key signal so as to cause said weighing scale to enter the programming mode, said weighing scale further including a signal receiver in electrical communication with said power port so as to receive the key signal; and
the key signal is an AC signal having a frequency and said power port is a DC power port, said signal receiver configured to identify the frequency as corresponding to the key signal.
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Accused Products
Abstract
A programmable weighing scale and a system and method for programming values of adjustable operating parameters used in generating the displayed output from the weighing scale. The weighing scale is placed into a restricted-access programming mode, which allows an authorized programmer to select values of operating parameters that allow the programmer to initially set or change the service characteristics of the scale. Operating parameters that can be varied include variables used in sampling the weighing scale'"'"'s transducer electrical output, mathematically processing that output, and displaying the results. Once the operating parameter values have been selected, the weighing scale will utilize those values until the weighing scale undergoes a subsequent reprogramming.
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Citations
27 Claims
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1. A system, comprising:
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a weighing scale having weighing functionality controlled by an operating parameter and having stored thereon a plurality of differing values of the operating parameter, said weighing scale having a controller operatively configured to enter a programming mode so as to allow a programmer to set a value of the operating parameter by electronically selecting from among the plurality of differing values stored on said weighing scale; wherein; said weighing scale further includes a power port for receiving external electrical power for powering said weighing scale during use of the weighing functionality and said controller is responsive to a key signal so as to cause said weighing scale to enter the programming mode, said weighing scale further including a signal receiver in electrical communication with said power port so as to receive the key signal; and the key signal is an AC signal having a frequency and said power port is a DC power port, said signal receiver configured to identify the frequency as corresponding to the key signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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a weighing scale having an operating mode, a programming mode, and a weighing functionality controlled by an operating parameter, and having stored thereon a plurality of differing values of the operating parameter, said weighing scale including; a controller responsive to a programming mode signal so as to change said weighing scale from operating mode to programming mode; and a power port for receiving external electrical power for powering said weighing scale; an electronic key unit, external to said weighing scale, operatively configured to generate a key signal; and an electrical conduit electrically coupling said electronic key unit to said power port during use so as to provide the key signal to said controller; and a signal generator, external to said weighing scale, operatively configured to generate the key signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system, comprising:
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a weighing scale having weighing functionality controlled by an operating parameter and having stored thereon a plurality of differing values of the operating parameter, said weighing scale having a controller operatively configured to enter a programming mode so as to allow a programmer to set a value of the operating parameter by electronically selecting from among the plurality of differing values stored on said weighing scale; wherein said weighing scale further includes a power port for receiving external electrical power for powering said weighing scale during use of the weighing functionality and said controller is responsive to a key signal so as to cause said weighing scale to enter the programming mode, said weighing scale further including a signal receiver in electrical communication with said power port so as to receive the key signal; and a signal generator, external to said weighing scale, operatively configured to generate the key signal. - View Dependent Claims (20, 21, 22, 23)
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24. A system, comprising:
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a weighing scale having an operating mode, a programming mode, and a weighing functionality controlled by an operating parameter, and having stored thereon a plurality of differing values of the operating parameter, said weighing scale including; a controller responsive to a programming mode signal so as to change said weighing scale from operating mode to programming mode; and a power port for receiving external electrical power for powering said weighing scale; an electronic key unit, external to said weighing scale, operatively configured to generate a key signal; and an electrical conduit electrically coupling said electronic key unit to said power port during use so as to provide the key signal to said controller; wherein; said weighing scale further includes a power port for receiving external electrical power for powering said weighing scale during use, said signal receiver integrated into said power port; and the key signal is an AC signal having a frequency and said power port is a DC power port, said signal receiver configured to identify the frequency as corresponding to the key signal. - View Dependent Claims (25, 26, 27)
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Specification