Digital multimeter having remote display with automatic communication binding
First Claim
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1. Apparatus comprising:
- a first device and a second device each having control circuitry, IR interface circuitry, and RF transceiver circuitry, said control circuitry having associated memory for storing an address of a current RF communication partner;
said first and second devices having a respective first address and second address for RF communication;
said first and second devices exchanging said first and second addresses with each other via said IR interface circuitry such that said first device will recognize said second device as its RF communication partner and said second device will recognize said first device as its RF communication partner; and
said first and second devices being operative to communicate via said RF transceiver circuitry with their respective RF communication partner;
wherein said first and second devices are separable units of an electrical test instrument; and
wherein said first device is a base unit of said electrical test instrument and said second device is a remote display unit of said electrical test instrument, said base unit and remote display unit together comprising the electrical test instrument.
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Abstract
A method of automatically binding first and second devices for RF communication is disclosed. One step of the method involves establishing a secure, non-RF communication mode between the first and second devices. According to another step, first and second communication addresses respectively identifying the first and second devices are exchanged in the secure, non-RF communication mode such that the first and second devices will recognize each other as communication partners. The secure, non-RF communication mode is then terminated and an RF communication mode is established between the first and second devices as a first bound pair.
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Citations
18 Claims
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1. Apparatus comprising:
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a first device and a second device each having control circuitry, IR interface circuitry, and RF transceiver circuitry, said control circuitry having associated memory for storing an address of a current RF communication partner; said first and second devices having a respective first address and second address for RF communication; said first and second devices exchanging said first and second addresses with each other via said IR interface circuitry such that said first device will recognize said second device as its RF communication partner and said second device will recognize said first device as its RF communication partner; and said first and second devices being operative to communicate via said RF transceiver circuitry with their respective RF communication partner; wherein said first and second devices are separable units of an electrical test instrument; and wherein said first device is a base unit of said electrical test instrument and said second device is a remote display unit of said electrical test instrument, said base unit and remote display unit together comprising the electrical test instrument. - View Dependent Claims (2, 3, 4, 5)
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6. A device capable of establishing RF communication with a paired device of a communication pair, said device comprising:
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IR interface circuitry; RF transceiver circuitry; control circuitry having associated memory for storing a partner address of a current RF communication partner; said control circuitry operative to receive said partner address via said IR interface circuitry in an IR communication mode; and said control circuitry utilizing said partner address to communicate with said paired device in an RF communication mode; wherein said device is one of a base unit or a remote display unit of an electrical test instrument and said paired device is the other of the base unit or the remote display unit of the electrical test instrument. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method of establishing RF communication between a first device and a second device, the method comprising:
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establishing an IR communication mode between the first device and the second device, wherein the first device and the second device each have control circuitry, IR interface circuitry, and RF transceiver circuitry, said control circuitry having associated memory for storing an address of a current RF communication partner, and said first and second devices having a respective first address and second address for RF communication; exchanging said first and second addresses between said first and second devices via said IR interface circuitry, such that said first and second devices will recognize each other as its current RF communication partners; communicating between said first and second devices via said RF transceiver circuitry; wherein said first and second devices are separable units of an electrical test instrument; and wherein said first device is a base unit of said electrical test instrument and said second device is a remote display unit of said electrical test instrument. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification