# US 5,349,139 A · Architecture for communication of remote devices to a digitizing display

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,349,139 A
- Document ID: US5349139A
- Status: Granted
- Kind: A
- Application number: 07/969,864
- Filed: 1992-10-30
- Granted: 1994-09-20
- Earliest claimed: 1992-10-30
- Assignees: International Business Machines Corporation
- Inventors: Guy F. Verrier; Frank L. Stein; Robert L. Donaldson
- Web page: https://patentgrep.com/patent/US5349139A

## CPC

- G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F 3/03545: {Pens or stylus}
- G06F 3/04162: {for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware}
- G06F 3/0441: {using active external devices, e.g. active pens, for receiving changes in electrical potential transmitted by the digitiser, e.g. tablet driving signals}
- G06F 3/0442: {using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

An architecture for communication of remote devices to a digitizing display includes a contact sensing mechanism and a position sensing mechanism whose outputs are multiplexed for transmission from the stylus to an antenna located proximate to the digitizing display. The digitizing display also includes a transmitter for transmitting information from a pen-based computer system to the stylus for storage or utilization in the stylus.

## Claims

### Claim 1

A data processing architecture for a pen-based computing system comprising: a stylus which includes a pressure sensing transducer and a X-Y position sensing transducer;
said pressure sensing transducer coupled to a multiplexer and said X-Y position sensing transducer also connected to said multiplexer;
a transmitter in said stylus having an input connected to said multiplexer, for transmitting a multiplexed data stream of information representing contact pressure applied to said pressure transducer and X-Y information representing the position of the stylus;
said system further comprising a digitizing display which includes an electrostatic tablet which radiates electromagnetic radiation which is detected by said X-Y position sensing transducer in said stylus;
a receiver located proximate said electrostatic tablet in said pen-based computer system, for receiving a multiplexed data stream transmitted from said stylus;
whereby an event of contacting said pressure transducer on the surface of said electrostatic tablet and establishing an X-Y position of said stylus with respect to said electrostatic tablet are transmitted from said stylus to said receiver;
a second transmitter in said digitizing display, in said pen-based computer system, for transmitting information to said stylus;
a second receiver in said stylus, for receiving information from said second transmitter in said digitizing display; and
a utilization device in said stylus, coupled to said second receiver, for using information received from said digitizing display.

### Claim 2 (depends on 1)

The system of claim 1 wherein said utilization device is a RAM and information stored therein is originated in said pen-based computer system.

### Claim 3 (depends on 1)

The system of claim 1 wherein said utilization device is an annunciator device.

### Claim 4 (depends on 3)

The system of claim 3 wherein said annunciator device is a liquid crystal display device.

### Claim 5 (depends on 3)

The system of claim 3 wherein said annunciator device is a beeper device.

### Claim 6 (depends on 3)

The system of claim 3 wherein said annunciator device is a vibrator device.

### Claim 7 (depends on 1)

The system of claim 1 which further comprises:
a personal identification number storage device in said stylus, having an output coupled to said multiplexer.

### Claim 8 (depends on 1)

The system of claim 1 which further comprises:
a random access memory in said stylus, which stores data which can be output to a multiplexer device coupled therewith.

### Claim 9 (depends on 1)

The system of claim 1 which further comprises:
an optical character recognition device in said stylus having an output coupled to said multiplexer.

### Claim 10 (depends on 1)

The system of claim 1 which further comprises:
a bar code reader device in said stylus, having an output coupled to said multiplexer.

### Claim 11 (depends on 1)

The system of claim 1 which further comprises:
a first antenna in said stylus coupled to said transmitter therein, for transmitting an electromagnetic signal from said stylus which contains said multiplexed data stream;
a second antenna embedded proximate to said electrostatic tablet, for receiving said electromagnetic signal transmitted from said first antenna in said stylus, said second antenna being coupled to said receiver located proximate to said electrostatic tablet.