Telementry by digitizer stylus
First Claim
Patent Images
1. In a stylus for use with a computer, the improvement comprising:
- a) memory which stores data;
b) a conversion circuit for converting the stored data into a serial bit stream; and
c) a tip for outputting the stream; and
d) a programmable interface for providing some of the data.
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Abstract
The invention concerns a stylus for use with a digitizing tablet, such as that associated with the display of a portable computer. The stylus contains memory which stores data such as operating state (i.e., states of user-controlled buttons, state of charge of battery), a stylus identification code, and fault codes, which indicate error conditions which arise. The invention transmits the contents of memory, by a serial bit stream, to the computer.
67 Citations
18 Claims
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1. In a stylus for use with a computer, the improvement comprising:
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a) memory which stores data; b) a conversion circuit for converting the stored data into a serial bit stream; and c) a tip for outputting the stream; and d) a programmable interface for providing some of the data. - View Dependent Claims (3, 4, 5, 6, 10, 14, 15, 16, 17)
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2. In a stylus for use with a computer, the improvement comprising:
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a) memory for storing data; and b) a programmable interface for allowing a user to program the memory. - View Dependent Claims (18)
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7. In a stylus for use with a computer, the improvement comprising:
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a) memory for storing data; b) a programmable interface coupled to the memory; and c) packetizing logic for i) producing a sequence of serial data packets, each including A) data from the memory and B) an identifier for the data. - View Dependent Claims (8)
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9. A method of operating a stylus, comprising the following steps:
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a) storing pieces of data indicative of two or more of the following; i) an identification number, ii) a color, iii) battery status, and iv) pressure transducer output; b) for each piece of data, generating a packet pair, comprising i) serial data representing the piece of data, and ii) an identification packet; and c) applying the packet pairs as a continuous data stream, separated by a packet demarcation code, to a tip of the stylus.
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11. A method of using a computer stylus comprising the steps of:
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storing information in the stylus some of the information is provided by a programmable interface; serially transmitting the information by amplitude-modulating a sine wave train; and applying the wave train to a tip of the stylus. - View Dependent Claims (12, 13)
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Specification