Digital system bus for use in low power instruments such as hearing aids and listening devices
First Claim
1. A portable communication device, comprising:
- at least one peripheral device including an electro-mechanical or electro-acoustical component;
a master component; and
a system bus coupled to said at least one peripheral device, said system bus including at least two signal-carrying lines, one of said lines being a composite line adapted to carry more than one digital signal between said master component and said at least one peripheral device.
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Accused Products
Abstract
A low-voltage, low-power, synchronous, bidirectional, time-multiplexed, serial communication, scalable system bus carrying a number of signals over a fewer number of wires between a master device and peripheral devices or between peripheral devices. One of the wires carries a composite digital signal that includes a data signal and a synchronizing signal, though other combinations are contemplated. The system bus can support more peripheral devices than there are available time slots, and supports interrupt polling and servicing. In addition, peripheral devices that include an electro-mechanical or electro-acoustical component connected to the system bus can also communicate directly to each other without using the system bus. The system bus can be implemented in low voltage, low power devices, including listening devices such as hearing instruments and headsets, portable telephones, and personal digital assistants.
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Citations
24 Claims
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1. A portable communication device, comprising:
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at least one peripheral device including an electro-mechanical or electro-acoustical component;
a master component; and
a system bus coupled to said at least one peripheral device, said system bus including at least two signal-carrying lines, one of said lines being a composite line adapted to carry more than one digital signal between said master component and said at least one peripheral device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification