Receiver matrix configured to identify multiple external resistors
First Claim
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1. An electronics circuit providing an array of receivers to identify the resistance values of external resistors, said electronics circuit comprising:
- a microcontroller having a first group of m interface pins and a second group of n interface pins;
first group of n capacitors each connected to one of said n interface pins;
at least first and second receivers each comprises a first contact point and a second contact point for receiving an external resistor;
wherein said first contact point is connected to one of said first group of interface pins and said second contact point is connected to one of said second group of interface pins; and
a software resided in memory means enabling said microcontroller to identify the resistance of an external resistor received by any of said receivers according to the charging or discharging characteristics of said capacitor in conjunction with said external resistor.
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Abstract
An electronics circuit designed for a matrix array of receivers configured to detect multiple external resistors of close values selected from the 100 ohm to 1 Mohm range, and to provide different responses according to the resistance of a resistor connected to a receiver.
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Citations
23 Claims
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1. An electronics circuit providing an array of receivers to identify the resistance values of external resistors, said electronics circuit comprising:
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a microcontroller having a first group of m interface pins and a second group of n interface pins;
first group of n capacitors each connected to one of said n interface pins;
at least first and second receivers each comprises a first contact point and a second contact point for receiving an external resistor;
wherein said first contact point is connected to one of said first group of interface pins and said second contact point is connected to one of said second group of interface pins; and
a software resided in memory means enabling said microcontroller to identify the resistance of an external resistor received by any of said receivers according to the charging or discharging characteristics of said capacitor in conjunction with said external resistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An electronics circuit configured to identify the resistance values of external resistors comprising:
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a microcontroller having a first group of m interface pins and a second group of n interface pins;
at least first and second receivers each comprises a first contact point connect to one of the m pins and a second contact point connected to one of the n pins for receiving an external resistor;
said electronics circuit further comprising at lease one of the following members;
(a) a first array of capacitors each connected to one of said n interface pins;
(b) a first array of capacitors each connected to one of said n interface pins and a second array of capacitors each connected to one of said n interface pins;
(c) a first array of capacitors each connected to one of said n interface pins and an array of reference resistors configured to calibrate the charging or discharging characteristic of said first array of capacitors;
(d) a first array of capacitors each connected to one of said n interface pins;
a second array of capacitors each connected to one of said n interface pins;
a first array of reference resistors configured to calibrate the charging or discharging characteristic of said first array of capacitors and a second array of reference resistors configured to calibrate the charging or discharging characteristics of said second array of capacitors;
(e) a first array of capacitors each connected to one of said n interface pins;
a second array of capacitors each connected to one of said n interface pins and a third group of k interface pins configured to activate one of said first or second arrays of capacitors;
(f) a first array of capacitors each connected to one of said n interface pins;
a second array of capacitors each connected to one of said n interface pins;
a first array of reference resistors configured to calibrate the charging or discharging characteristic of said first array of capacitors;
a second array of reference resistors configured to calibrate the charging or discharging characteristics of said second array of capacitors and a third group of interface pins to activate one of said first or second arrays of reference resistors;
(g) an array of internal resistance elements located inside said microcontroller for connecting in series or in parallel with said external resistor;
(h) an array of internal resistance elements located inside said microcontroller for connecting in series or in parallel with a receiver for identifying the resistance value of a resistor received by said receiver;
(i) first and second capacitors of different capacitance values and switching circuit connecting any of said first or second capacitors to a receiver for identifying the resistance value of an external resistor received by said receiver; and
(j) first and second capacitors each made with different materials and switching circuit connecting any of said first or second capacitors to a receiver for identifying the resistance value of an external resistor received by said receiver. - View Dependent Claims (16)
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17. A method for an electronics circuit to provide response according to the resistance identity of an external resistor, wherein said electronics circuit comprises:
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a microcontroller having a first group of m interface pins and a second group of n interface pins;
at least first and second receivers each comprises a first contact point and a second contact point configured for receiving an external resistor;
wherein said first contact point is connected to one of said first group of interface pins and said second contact point is connected to one of said second group of interface pins;
first group of n capacitors each connected to one of said n interface pins; and
a software resided in memory means enabling said microcontroller to determine the resistance of an external resistor received by any of said receivers according to the charging or discharging characteristics of said capacitor in conjunction with said external resistor;
said method comprises the steps of;
(1) arranging said electronics circuit to stay at a low power standby mode;
(2) arranging a first external article identified by a first resistor to make contact with said first receiver;
(3) arranging said electronics circuit to transform from the standby mode into an active mode;
(4) charging or discharging a capacitor connected with said first resistor to determine the identity of said first resistor; and
(5) providing a response according to the identity of said first resistor detected. - View Dependent Claims (18)
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19. An electronics circuit providing an array of receivers to identify the resistance values of external resistors, said electronics circuit comprising:
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a microcontroller having a first group of m interface pins and a second group of n interface pins;
at least first and second receivers each comprises a first contact point and a second contact point for receiving an external resistor;
wherein said first contact point is connected to one of said first group of interface pins and said second contact point is connected to one of said second group of interface pins;
first and second resistor identifying circuits each configured to detect resistors of different resistance ranges;
switching circuit configured to connect one of said resistor identifying circuit to an external resistor when it is received by one of said receivers; and
a software resided in memory means configured for said microcontroller to control said switching circuit and identify the resistance of said external resistor received. - View Dependent Claims (20, 21, 22, 23)
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Specification