US5883338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telementry by digitizer stylus
Assignee: MagnaChip Semiconductor Ltd
•
Filing: 1997-08-04
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Granted: 1999-03-16
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Expires: 2017-08-04
Abstract
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.
Inventors
- 👤 Bruce R. Trunck
- 👤 Steven K. Skoog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:51
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/0354; G06F3/03545
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
49 words
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.
Claim 2
Dependent Claim
49 words
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.
Claim 3
Dependent Claim
29 words
In a stylus for use with a computer, the improvement comprising: a) memory for storing data; and b) a programmable interface for allowing a user to program the memory.
Claim 4
Dependent Claim
29 words
In a stylus for use with a computer, the improvement comprising: a) memory for storing data; and b) a programmable interface for allowing a user to program the memory.
Claim 5
Dependent Claim
22 words
Apparatus according to claim 1, in which the memory contains a multi-bit word indicating pressure applied to the tip of the stylus.
Claim 6
Dependent Claim
17 words
Apparatus according to claim 1, in which the memory contains a multi-bit word indicating barrel switch closure.
Claim 7
Dependent Claim
16 words
Apparatus according to claim 1, in which the memory contains a multi-bit word indicating battery condition.
Claim 8
Dependent Claim
30 words
Apparatus according to claim 1 c) which further comprises memory whose contents changes during use, and d) in which the conversion, circuit converts said contents to a serial bit stream.
Claim 9
Dependent Claim
51 words
In a stylus for use with a computer, the improvement comprising: 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.
Claim 10
Dependent Claim
51 words
In a stylus for use with a computer, the improvement comprising: 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.
Claim 11
Dependent Claim
18 words
Apparatus according to claim 7 in which the packetizing logic inserts a packet demarcation code between each packet.
Claim 12
Independent Claim
85 words
A method of operating a stylus, comprising the following steps: 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.
Claim 13
Independent Claim
85 words
A method of operating a stylus, comprising the following steps: 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.
Claim 14
Dependent Claim
29 words
Apparatus according to claim 1, in which the data includes data that changes during use of the stylus and data that does not change during use of the stylus.
Claim 15
Independent Claim
47 words
A method of using a computer stylus comprising the steps of: 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.
Claim 16
Independent Claim
47 words
A method of using a computer stylus comprising the steps of: 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.
Claim 17
Dependent Claim
14 words
The method of claim 11 wherein the tip is capacitively coupled to a display.
Claim 18
Dependent Claim
30 words
The method of claim 11 wherein the information includes other data that includes at least one of the group consisting of owner name, serial number, stylus color and fault codes.
Claim 19
Dependent Claim
12 words
The stylus of claim 1 wherein the tip includes a tip switch.
Claim 20
Dependent Claim
12 words
The stylus of claim 1 wherein the tip includes a pressure transducer.
Claim 21
Dependent Claim
10 words
The stylus of claim 1 wherein the memory is pre-programmed.
Claim 22
Dependent Claim
18 words
The stylus of claim 1 wherein the conversion circuit includes a parallel-to-serial converter and a pulse train generator.
Claim 23
Dependent Claim
11 words
The stylus of claim 2 wherein the interface includes DIP switches.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-15 | 2002-09-14 | 2003-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-15 | 2006-09-14 | 2007-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-15 | 2010-09-14 | 2011-03-16 | $7700.00 | Window Closed / Lapsed |