Pen computing: a technology overview and a vision

Abstract

This work gives an overview of a new technology that is attracting growing interest in public as well as in the computer industry itself. The visible difference from other technologies is in the use of a pen or pencil as the primary means of interaction between a user and a machine, picking up the familiar pen and paper interface metaphor. From this follows a set of consequences that will be analyzed and put into context with other emerging technologies and visions.Starting with a short historical background and the technical advances that begin making Pen Computing a reality, the new paradigms created by Pen Computing will be explained and discussed. Handwriting recognition, mobility and global information access are other central topics. This is followed by a categorization and an overview of current and future systems using pens as their primary user interface component.

References

1. Adorno, Theodor W., Ästhetische Theorie, Suhrkamp, Frankfurt am Main, 1970 (unfinished manuscript), ISBN 3- 518-27602-6.
2. Alford, Roger C., The PCMCIA Redefines Portability, BYTE, December 1992, pp. 237-244.
3. Allen, Dennis, 1: Pen-Input Systems, BYTE, April 1992, p. 10; 2: The Promise of High-Tech, BYTE, September 1993, p. 10; 3: Who Will Define the PDA?, BYTE, October 1993, p. 10; 4: Beyond the GUI, BYTE, February 1994, p. 10.
4. Amsoft, Information for Software Development on the Amstrad PenPad PDA600, available from: Amsoft PDA Peripherals, P.O. Box 111, Macclesfield, Cheshire, United Kingdom, phone: [phone], fax: [phone].
5. Andrews, Dave, Behind the Wheel of the First Zoomer and Newton PDAs, BYTE, September 1993, pp. 22-26.
6. Apiki, Steve, A Unified Ink Standard, BYTE, September 1993, p. 26.
7. Apple PIE, 1: A Guide to the Newton Toolkit; 2: The Newton-Script Programming Language, 3: Newton Programmer's Guide, 4: Newton BookMaker User's Guide, Newton Toolkit (NTK) documentation, available with the NTK from: Apple Programmers and Developers Association (APDA), Apple Computer, Inc., P. O. Box 319, Buffalo, NY 14207-0319, phone: [phone] (U.S.), [phone] (Canada), [phone], fax: [phone], email: [email protected], ©Apple Computer, 1994.
8. Apple, 1: Dylan - an object-oriented dynamic language, Apple Computer, Eastern Research and Technology, 1992, available from: Apple Computer, 1 Main Street, Cambridge, MA 02142, phone: [phone], fax: [phone] or send name and address information to [email protected], more information is available from http:// cambridge.apple.com/pub/dylan; 2: OpenDoc - Shaping Tomorrow's Software (White Paper), available from: Apple Computer Higher Education Gopher Server.
9. ARM, ARM-shaping the future and ARM610/710 RISC Processor Data Sheets, all © 1993, available from: ARM, Advanced RISC Machines Limited, Fulbourn Road, Cherry Hinton, Cambridge, CB1 4JN, England, phone: [phone], fax: [phone], email: [email protected]
10. Arnbak, Jens C., The European (R)evolution of Wireless Digital Networks, IEEE Communications, September 1993, pp. 74-82.
11. AT&T, Hobbit, © 1992, available from: Personal Communication Systems, AT&T Microelectronics, 4995 Patrick Henry Drive, Santa Clara, CA 95054, phone: [phone], fax: [phone].
12. Ballard, Nigel, Nigel's PDA comparison chart, current version available from: comp.sys.pen, CompuServe Newton and Palmtop forums, or from [email protected]
13. Baran, Nicholas, 1: LCDs and Beyond, BYTE, February 1991, pp. 229-236; 2: Rough Gems: First Pen Systems Show Promise, Lack Refinement, BYTE, April 1992, pp. 212- 222; 3: Zinc-Air Batteries: Long May You Run, BYTE, May 1992, p. 28; 4: The Outlook for Pen Computing, BYTE, September 1992, pp. 159-164; 5: Competition for Active Matrix, BYTE, January 1994, p. 24; 6: Object Operating Systems - Alliances Could Mean Better Integration , BYTE, March 1994, p. 38.
14. Baran, Nicholas, Dan Bricklin, Jeff Dao, Ken Dulaney, Howard Eglowstein, Steve Liffick, Kevin Mankin, Andy Reinhardt, The Future of Pen Computing, Roundtable, BYTE, March 1992, pp. 115-118.
15. Baran, Nicholas, Dan Bricklin, Jeff Dao, Neil Katz, Steve Liffick, David Mentley, The Future of Pen Computing, Part 2, Roundtable, BYTE, April 1992, pp. 99-102.
16. Barr, Christopher, Michael Neubarth, Pen Pals, PC Magazine, October 12, 1993, pp. 116-182.
17. Barthes, Roland, 1: Le degré zéro de l'écriture, Seuil, Paris, 1953; 2: Mythologies, Seuil, Paris, 1957 (transl. Mythen des Alltags, Suhrkamp, Frankfurt am Main, 1964, ISBN 3-518-10092-0); 3: L'empire des signes, Albert Skira, Genève, 1970 (transl. Das Reich der Zeichen, Suhrkamp, Frankfurt am Main, 1981, ISBN 3-518- 11077-2).
18. Bell South, Simon Says.., documentation from: BellSouth Cellular Corp., 1100 Peachtree Street, N. E., Suite 14D05, Atlanta, GA 30309, phone: [phone] (Nicole Lipson), fax: [phone].
19. Betz, David, Life with NewtonScript, BYTE, March 1994, pp. 191-194.
20. Bohländer, Egon, Walter Gora, Mobilkommunikation-Technologien und Einsatzmöglichkeiten, Datacom, Bergheim, 1992.
21. Bollay, Dennison, Dylan (dynamic language) or CLOS +-, Journal of Object-Oriented Programming, November/December 1992, pp. 75-77.
22. Bowen, Tamme D., Kelly M. Hall, Towards a Better Understanding of Dylan, Laboratory for Applied Logic, University of Idaho, Research Report LAL-93-01, May 1993.
23. Brettschneider, Joachim, Spracheingabe und Sprachausgabe: Technologien mit weitreichenden Einsatzmöglichkeiten, Computerworld Schweiz, October 25, 1993, pp. 7-11.
24. Bricklin, Dan, Jot Defines Electronic Ink, BYTE, October 1993, p. 110.
25. Bruce, Richard, Scott Elrod, The Electronic Whiteboard, BYTE, July 1992, p. 166-167.
26. Carr, Robert M., The Point of the Pen, BYTE, February 1991, pp. 211-221.
27. Carr, Robert, Dan Shafer, Power of PenPoint, Addison-Wesley, Reading MA (etc.), 1991, ISBN 0-201-57763-1.
28. Chang, Robin L. P., Theodosius Pavlidis, Fuzzy Decision Tree Algorithms, Fuzzy Models for Pattern Recognition - Methods That Search for Structure in Data, IEEE Press, New York, 1991, pp. 321-325.
29. Chomsky, Noam, 1: Syntactic Structures, Mouton, Den Haag, 1957; 2: Language and Mind, Harcourt Brace, New York, 1968.
30. CIL, Component Integration Laboratories, information on OpenDoc available via email: [email protected]
31. Clarkson, Mark, 1: Objects and PenPoint, BYTE, December 1992, pp. 158-159; 2: All-Terrain Networking, BYTE, August 1993, pp. 111-116.
32. Crane, Hewitt D., Dimitri Rtischev, Pen and Voice Unite, BYTE, October 1993, p. 98-102.
33. Crystaloid, Liquid Crystal Displays: A Primer, © 1993, available from: Crystaloid Electronics Co., 5282 Hudson Drive, Hudson, Ohio 44236-3769, phone: [phone], fax: [phone].
34. Dan Kimura, Takayuki, Hyperflow: A Visual Programming Language for Pen Computers, Proceedings of the 1992 IEEE Workshop on Visual Languages, Seattle, Washington, IEEE Computer Society Press, Los Alamitos, CA, ISBN 0-8186-3090-6, pp. 125-132.
35. Davidson, Clive, The man {Alan Kay} who made computers personal , New Scientist, 19 June 1993, pp. 32-35.
36. Davis, Dwight B., Turmoil In Pen Operating Systems, Datamation, December 19, 1993, pp. 20-28.
37. De Bruyne, Pieter, Compact Large-Area Graphic Digitizer for Personal Computers, IEEE Computer Graphics and Applications, December 1986, pp. 49-53.
38. De Bruyne, Pieter, Robert Korolnik, 1: Measurement of Static and Dynamic Calligraphic Features; 2: Segmentation and Recognition of Calligraphic Text, Laboratory for Communication Technology, ETH Zentrum, CH- 8092 Zürich, Switzerland.
39. De Mori, Renato, Pietro Laface, Use of Fuzzy Algorithms for Phonetic and Phonemic Labeling of Continuous Speech, Fuzzy Models for Pattern Recognition-Methods That Search for Structure in Data, IEEE Press, New York, 1991, pp. 299-310.
40. Department of Transportation, GPS Navstar - User's Overview , © 1991, available from: U.S. Department of Transportation, United States Coast Guard, Commanding Officer Global Positioning System Information Center (GPSIC), Omega Navigation System Center, 7323 Telegraph Road, Alexandria, VA 22310- 3998, phone: [phone], fax: [phone].
41. Dipert, Brian, Lou Hebert, Flash memory goes mainstream, IEEE Spectrum, October 1993, pp. 48-52.
42. Dunne, Shane, Towards Interactive Pen Input of Visual Languages , Proceedings of the 1992 IEEE Workshop on Visual Languages, Seattle, Washington, IEEE Computer Society Press, Los Alamitos, CA, ISBN 0-8186- 3090-6, pp. 243-245.
43. Eberhardt, Reinhold, Walter Franz, Mobilfunknetze - Technik, Systeme, Anwendungen, Vieweg, Braunschweig/Wiesbaden, 1993, ISBN 3-528-06526-5.
44. Eco, Umberto, La struttura Assente, Valentino Bompiani, Milano, 1968 (transl. Einführung in die Semiotik, Wilhelm Fink, München, 1972, ISBN 3-7705-0633-2).
45. Eldridge, James, Filing in a flash, IEEE Spectrum, October 1993, pp. 53-54.
46. EO, EO Personal Communicator and other documentation, available from: EO Europe, Abberley House, Granhams Road, Great Shelford, Cambridge, CB2 5LQ, United Kingdom, phone: [phone], fax: [phone].
47. Evins, Mikel, Objects without Classes, IEEE Computer, March 1994, pp. 104-109.
48. Feuerstein, Martin J., Theodore S. Rappaport, Wireless Personal Communications, Kluwer Academic Publishers, Boston/London/Dordrecht, 1993, ISBN 0-7923-9280-9.
49. Földes-Papp, Károly, Vom Felsbild zum Alphabet: die Geschichte der Schrift von ihren frühesten Vorstufen bis zur modernen lateinischen Schreibschrift, Belser, Stuttgart, 1987, ISBN 3-7630-1266-4.
50. Foley, James D., Victor L. Wallace, Peggy Chan, The Human Factors of Computer Graphics Interaction Techniques, IEEE Computer Graphics and Applications, November 1984, pp. 13-48.
51. Forman, George H., John Zahorjan, The Challenges of Mobile Computing, IEEE Computer, April 1994, pp. 38-47.
52. General Magic, information package on Magic Cap, Telescript, and company background available from: General Magic, 2465 Latham Street, Mountain View, CA 94040, phone: [phone], fax: [phone], email: [email protected]
53. Getting, Ivan I., The Global Positioning System, IEEE Spectrum, December 1993, pp. 36-47.
54. Glinert, Ephraim P., Visual Programming Environments-Paradigms and Systems / Applications and Issues, IEEE Computer Society Press, Los Alamitos, 1990, ISBN 0-8186- 8973-0 / 0-8186-8974-9.
55. GO, 1: Penpoint User Interface Design Reference, Addison-Wesley, Reading MA (etc.), 1991, ISBN 0-201-60858-8; 2: Penpoint Application Writing Guide, Addison-Wesley, Reading MA (etc.), 1992, ISBN 0-201-60857-X; 3: PenPoint Operating System: A Catalog of Products and Services and other documentation, available from: GO Corporation, 919 East Hillsdale Boulevard, Suite 400, Foster City, CA 94404.
56. Goldberg, Adele, David Robson, Smalltalk-80 - The Language , Addison Wesley, Reading MA (etc.), 1989, ISBN 0-201-13688-0.
57. Goldberg, David, Cate Richardson, Touch-Typing With a Stylus , INTERCHI '93 Conference Proceedings, Amsterdam, 1993, pp. 80-87 or from ftp:// parcftp.xerox.com/pub/unistrokes/InterCHI.ps
58. Goodisman, Aaron, A Stylus-Based User Interface for Text: Entry and Editing, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology and Xerox Corp., Palo Alto Research Center, 1991.
59. Gore, Andrew, Mitch Ratcliffe, Newton's Law, Random House, New York, 1993, ISBN 0-679-74647-1.
60. Gore, Andrew, Telescript: The net is the platform, MacWeek, 01.10.94, pp. 1, 95.
61. Guyon, Isabelle, Lambert Schomaker, Réjean Plamondon, Mark Liberman, Stan Janet, UNIPEN project of on-line data exchange and recognizer benchmarks, Pattern Recognition and Neural Networks chapter of the International Conference on Pattern Recognition, Jerusalem, Israel, October 9-13, 1994, available from ftp:// ftp.cis.upenn.edu/pub/UNIPEN-pub/
62. Halfhill, Tom R., 1: PDAs Arrive - But Aren't Quite Here Yet, BYTE, October 1993, pp. 66-86; 2: Ink vs. ASCII, BYTE, October 1993, p. 74.
63. Halfhill, Tom R., Andy Reinhardt, Just Like Magic?, BYTE, February 1994, pp. 22-23.
64. Hallett, Joe, Monochrome to Color, BYTE, July 1992, p. 179- 182.
65. Hayes, Frank, Displays-Down the DRAM Drain?, BYTE, February 1991, pp. 232-233.
66. Holtzman, Jack M., David J. Goodman, Wireless Communications - Future Directions, Kluwer Academic Publishers, Boston/London/Dordrecht, 1993, ISBN 0-7923- 9316-3.
67. Horrocks, R. J., R. W. A. Scarr, Future Trends in Telecommunications , Wiley, New York, 1993, ISBN 0-471- 93724-X.
68. Huang, X. D., Y. Ariki, M. A. Jack, Hidden Markov Models for Speech Recognition, Edinburgh University Press, Edinburgh, U.K., 1990, ISBN 0-7486-0162-7.
69. IBM, 1: IBM ThinkPad 710T; 2: IBM ThinkPad 750P; 3: IBM TouchMobile Handcomputer System, IBM Product Information.
70. IEEE, Visual Programming, special edition of IEEE Computer, March 1995.
71. Imielinski, Tomasz, B. R. Badrinath, 1: Querying in highly mobile distributed environments, Proceedings of the 18th VLDB Conference, Vancouver, Canada, 1992, 2: Replication and Mobility, 3: Data Management for Mobile Computing, 4: Mobile Wireless Computing: Solutions and Challenges in Data Management, DataMan Project, Rutgers University, all available from ftp://paul.rutgers.edu/pub/badri
72. Impedovo, S., J. C. Simon (editors), From Pixels to Features III -Frontiers in Handwriting Recognition, Elsevier Science, 1992, ISBN 0-444-89665-1.
73. Jensen, Hans, Die Schrift in Vergangenheit und Gegenwart, VEB Deutscher Verlag der Wissenschaften, Berlin, 1969, ISBN 3-326-00232-7.
74. Khanide, Fereydun, 1: Unleserlich - Wie gut erkennen Pen-Computer Handschriften?, c't, April 1993, pp. 82-88; 2: In eigener Schreibe, c't, February 1994, pp. 110-120; 3: Little Cards, Big Future, BYTE European Reseller, March 1994, pp. 53-56.
75. Kim, Joonki, On-Line Gesture Recognition by Feature Analysis, Computer Vision and Shape Recognition, World Scientific, Singapore (etc.), 1989, ISBN 9971-50-862-1, pp. 209-223.
76. Knaster, Barbara, Presenting Magic Cap, Addison-Wesley, Reading MA (etc.), 1994, ISBN 0-201-40740-X.
77. Kobb, Bennett Z., Personal Wireless, IEEE Spectrum, June 1993, pp. 20-25.
78. Koblo, Martin, Die Entwicklung der Schrift, Brandstetter, Wiesbaden, 1963.
79. Kolli, Raghu, Ralph Stuyver, Jim Hennessey, A Conceptual Device for the Early Phase of Design, Faculty of Industrial Design Engineering, Delft University of Technology, Jaffalaan 9, 2628 BX Delft, Netherlands, email: [email protected]
80. Korolnik, Robert, Erkennung handgeschriebener Zeichen, Laboratory for Communication Technology, ETH Zentrum, CH-8092 Zürich, Switzerland, 1990.
81. Krzyzak, Adam, W. Dai, Ching Y. Suen, On the Recognition of Handwritten Characters Using Neural Networks, Pattern Recognition - Architectures, Algorithms & Applications, World Scientific, Singapore (etc.), 1991, ISBN 981-02-0604-6, pp. 115-135.
82. LaLomia, Mary J., User Acceptance of Handwritten Recognition Accuracy, Conference Companion, CHI '94 (ACM Conference on Computer-Human Interaction), Boston, 1994, p. 107.
83. Lechner, Bernard J., HDTV is Coming to Desktop, BYTE, July 1992, p. 189-192.
84. Lévi-Strauss, Claude, 1: La pensée sauvage, Plon, Paris, 1962 (transl. Das wilde Denken, Suhrkamp, Frankfurt am Main, 1973, ISBN 3-518-27614-X); 2: Le cru et le cuit, Plon, Paris, 1964.
85. Lichtman, Moshe, Pen User Interface-9 Considerations, PEN, July/August 1992, pp. 28-29.
86. Linderholm, Owen, Steve Apiki, Michael Nadeau, The PC Gets More Personal, BYTE, July 1992, pp. 128-138.
87. Lurie, Michael, Color and Resolution, BYTE, July 1992, p. 171-176.
88. McCrone, John, Computers that listen, New Scientist, December 4, 1993, pp. 30-35.
89. McKeehan, Julie, Neil Rhodes, Programming for the Newton, Academic Press, 1994, ISBN 0-12-484800-1.
90. Meisel, William S., Talk to Your Computer, BYTE, October 1993, p. 113-120.
91. Mello, John P. Jr., Future Communications, BYTE, August 1993, pp. 95-106.
92. Mello, John P. Jr., Peter Wayner, Wireless Mobile Communications , BYTE, February 1993, pp. 146-154.
93. Mezick, Dan, Pen Computing Catches On, BYTE, October 1993, pp. 105-112.
94. Microsoft, Microsoft Windows for Pen Computing Programmer's Reference, Microsoft Press, 1992, ISBN 1-55615- 469-0.
95. Miley, Michael, Agent Technology - The fine line between smart design and intelligent software, MacWeek, 04.19.93, pp. 41-44.
96. Minsky, Marvin, The Society of Mind, Simon & Shuster, New York, 1985.
97. Motorola, PowerPC: The New Generation of Computing and PowerPC 601/602/603 Microprocessors, Technical Summaries , all © 1993, available from: Motorola Literature Distribution Center, P.O. Box 20912, Phoenix, Arizona 85036, fax: [phone].
98. Nadeau, Michael, Enabling Technologies, BYTE, July 1992, pp. 132-133.
99. Nagel, David, Software agents prepare to do their duty, MacWeek, 04.19.93, p. 44.
100. Nanda, Sanjiv, David J. Goodman (editors), Third Generation Wireless Information Networks, Kluwer Academic Publishers, Boston/London/Dordrecht, 1992, ISBN 0- 7923-9218-3.
101. Neisser, Ulric, Paul Weene, A Note on Human Recognition of Hand-Printed Characters, Information and Control, Vol. 3, 1960, pp. 191-196.
102. Nouboud, Fathallah, Réjean Plamondon, A Handwriting Interface to a Schematic Pseudocode Generator, Pattern Recognition - Architectures, Algorithms & Applications, World Scientific, Singapore (etc.), 1991, ISBN 981-02-0604-6, pp. 301-310.
103. Novobilski, Andy, PenPoint Programming, Addison-Wesley, Reading MA (etc.), 1992, ISBN 0-201-60833-2.
104. Pal, Sankar K., Dwijesh Dutta Majumder, Fuzzy Sets and Decisionmaking Approaches in Vowel and Speaker Recognition , Fuzzy Models for Pattern Recognition - Methods That Search for Structure in Data, IEEE Press, New York, 1991, pp. 236-240.
105. PCMCIA, PCMCIA Backgrounder and Update-The PCMCIA News, © 1993, available from: Personal Computer Memory Card International Association, PCMCIA Headquarters, 1030G East Duane Avenue, Sunnyvale, CA 94086, phone: [phone], fax: [phone]; PCMCIA Specifications, available from ftp:// csd4.csd.uwm.edu/pub/Palmtop/pcmcia.specifications
106. Perratore, Ed, Sharp's Non-Newtonian PDA, BYTE, October 1993, p. 69.
107. Piersol, Kurt, A Close-Up of OpenDoc, BYTE, March 1994, pp. 183-188.
108. Plamondon, Réjean, Ching Y. Suen, Marvin L. Simner (editors), Computer Recognition and Human Production of Handwriting, Proceedings of the Third International Symposium on Handwriting and Computer Applications, Montréal, July 1987, World Scientific, Singapore (etc.), 1989, ISBN 9971-50-665-3.
109. Plamondon, Réjean, Ching Y. Suen, Thinning of Digitized Characters from Subjective Experiments: A Proposal for a Systematic Evaluation Protocol of Algorithms, Computer Vision and Shape Recognition, World Scientific, Singapore (etc.), 1989, ISBN 9971-50-862-1, pp. 261- 272.
110. Plamondon, Réjean, G. Leedham, Computer Processing of Handwriting, World Scientific, Singapore (etc.), 1990, ISBN 981-02-0408-6 (hardcover), ISBN 981-02- 0520-1 (paper).
111. Pountain, Dick, 1: Amstrad's Modest PDA, BYTE, August 1993, pp. 161-164; 2: PDA CPUs: New Form Demands New Functions, BYTE, October 1993, pp. 80- 81.
112. Prince, Betty, Roelof H. W. Salters, 1: ICs going on a 3-V diet, IEEE Spectrum, May 1992, pp. 22-25; 2: Battery basics , IEEE Spectrum, May 1992, p. 24.
113. Prophet, Andy, PCMCIA, PEN, July/August 1992, pp. 10-12.
114. Quain, John R., No Tabula Rasa: Handwriting, PC Magazine, October 12, 1993, p. 176.
115. Rahnema, Moe, Overview of the GSM System and Protocol Architecture , IEEE Communications, April 1993, pp. 92- 100.
116. Redfern, Andy, Apple ARMs Itself, BYTE, July 1992, p. 134.
117. Reimer, John, Memories in My Pocket, BYTE, February 1991, pp. 251-258.
118. Reinhardt, Andy, 1: Touch-and-Feel Interfaces, BYTE, February 1991, pp. 223-226; 2: Building the Data Highway, BYTE, March 1994, pp. 46-74; 3: Managing the New Document, BYTE, August 1994, pp. 91-104.
119. Rekhter, Yakov, An Architecture for Transport Layer Transparent Support for Mobility, T. J. Watson Research Center, IBM Corp.
120. Riecken, Doug (editor), Intelligent Agents, Communications of the ACM (special edition), July 1994, pp. 18-147.
121. Rogowitz, Bernice E., Displays: The Human Factor, BYTE, July 1992, p. 195-200.
122. Ryan, Bob, 1: Communications Get Personal, BYTE, February 1993, pp. 169-176, 2: The Wireless Factor, BYTE, October 1993, p. 84; 3: Dynabook Revisited with Alan Kay, BYTE, February 1991, pp. 203-208; 4: Processors for PDAs: Intel, AT&T, and AMD Continue the Chase, BYTE, December 1993, p. 28.
123. Ryan, Bob, Tom Thompson, RISC Grows Up, BYTE, January 1994, pp. 91-98.
124. Salberg-Steinhardt, Barbara, Die Schrift: Geschichte-Gestaltung-Anwendung , DuMont, Köln, 1983, ISBN 3- 7701-1454-X.
125. Salmasi, Allen B., Personal Communication Networks of the Future: CDMA Digital Cellular & PCN Developments, Wireless Personal Communications, Martin J. Feuerstein, Theodore S. Rappaport (editors), Kluwer Academic Publishers, Boston/London/Dordrecht, 1993, ISBN 0-7923-9280-9, pp. 61-76.
126. Scheele, Peter, Mobilfunk in Europa, Decker, Heidelberg, 1992, ISBN 3-7685-0992-3.
127. Schenkel, Markus, I. Guyon, D. Henderson, On-Line Cursive Script Recognition using Time Delay Neural Networks and Hidden Markov Models, Institute for Signal and Information Processing, ETH Zürich, CH-8092 Zürich, and AT&T Bell Laboratories, Holmdel, NJ 07733.
128. Schwarz, Hans-Ulrich, Schnittmuster-Handschrifterkennung mit der Winkelschnitt-Analyse, c't, November 1993, pp. 248-253.
129. Shepard, Jeffrey D., Lower the Voltage, Raise the Power, BYTE, December 1992, pp. 137-141.
130. Simon, Jean-Claude, Off-Line Cursive Word Recognition, Proceedings of the IEEE, 1992, Vol. 80, Issue 7, pp. 1150-1161.
131. Siy, Pepe, C. S. Chen, Fuzzy Logic for Handwritten Numeral Character Recognition, Fuzzy Models for Pattern Recognition - Methods That Search for Structure in Data, IEEE Press, New York, 1991, pp. 321-325.
132. Software Publisher's Association, JOT- A Specification for an Ink Storage and Interchange Format, Version 1.0, ©Slate 1993, available from: Software Publisher's Association Mobile and Pen special-interest group, phone: [phone] ext. 336; technical support from: Slate Technical Support, Slate Corp., 15035 N. 73rd Street, Scottsdale, Arizona 85260, phone: [phone], fax: [phone], email: 75300, 3236 (Compuserve).
133. Srihari, Sargur (editor, chairman), IWFHR III, Proceedings of the Third International Workshop on Frontiers in Handwriting Recognition, Buffalo, New York, © 1993 Center of Excellence for Document Analysis and Recognition, CEDAR, SUNY at Buffalo, email: [email protected]
134. Statt, Paul, Intel/VLSI Join the PDA Fray, BYTE, January 1994, pp. 101-105.
135. Steel, Raymond, Personal Communication Networks, Tutorial at: International Zurich Seminar on Digital Communications, Zürich, March 1994.
136. Sternglass, Daniel, The future is in the PC cards, IEEE Spectrum, June 1992, pp. 46-50.
137. Suen, Ching Y., Christine Nadal, Raymond Legault, Tuan A. Mai, Louisa Lam, Computer Recognition of Unconstrained Handwritten Numerals, Proceedings of the IEEE, 1992, Vol. 80, Issue 7, pp. 1162-1180.
138. Suen, Ching Y., Marc Berthod, Shunji Mori, Automatic Recognition of Handprinted Characters - The State of the Art, Proceedings of the IEEE, Vol. 68, No. 4, April 1980, pp. 469-487.
139. Sutherland, Ivan E., Sketchpad - A Man-Machine Graphical Communication System, AFIPS Conference Proceedings, 1963, pp. 2-19, reprinted in {Glinert}.
140. Tappert, Charles C., Ching Y. Suen, Toru Wahakara, The State of the Art in On-Line Handwriting Recognition, IEEE Transactions on Pattern Analysis and Machine Intelligence, 1990, Vol. 12, No. 8, pp. 787-808.
141. Thé, Lee, Pen Hardware: Get Practical, Datamation, December 19, 1993, pp. 30-35.
142. Thompson, Tom, Tom R. Halfhill, Michael Nadeau, Ease of Use Is Relative, BYTE, October 1993, pp. 89-94.
143. Tracht, Allen E., Adapting laptops to data acquisition, IEEE Spectrum, October 1993, pp. 45-47.
144. Udell, J., 1: Windows Meets the Pen, BYTE, June 1992, pp. 159-168; 2: Component Ware, BYTE, May 1994, pp. 46-56.
145. Ungar, David, Randall B. Smith, SELF: The Power of Simplicity , in: Lisp and Sybolic Computation, 4, 3, 1991, Kluwer Academic; along with many other articles also available from http://self.stanford.edu/
146. van Someren, Alex, Carol Atack, The ARM RISC Chip-A Programmer's Guide, Addison-Wesley, Reading MA (etc.), 1993, ISBN 0-201-62410-9.
147. Wakahara, Toru, Hiroshi Murase, Kazumi Odaka, On-Line Handwriting Recognition, Proceedings of the IEEE, 1992, Vol. 80, Issue 7, pp. 1181-1194.
148. Wang, P. S. P. (editor), C. Y. Suen et al., Character & Handwriting Recognition - Expanding Frontiers, World Scientific, Singapore (etc.), 1991, ISBN 981-02-0710-7.
149. Ward, Jean Renard, Barry Blesser, Interactive Recognition of Handprinted Characters for Computer Input, IEEE Computer Graphics and Applications, September 1985, pp. 24-37.
150. Ward, Jean Renard, Debra Schultz, Digitizer Renaissance, BYTE, January 1993, pp. 251-260.
151. Ward, Jean Renard, Mark J. Phillips, Digitizer Technology: Performance Characteristics and the Effects on the User Interface , IEEE Computer Graphics and Applications, April 1987, pp. 31-44.
152. Wayner, Peter, 1: Stretching the Ether, BYTE, February 1993, pp. 159-165; 2: Optimal Character Recognition, BYTE, December 1993, pp. 203-210; 3: Objects on the March, BYTE, January 1994, pp. 139-150; 4: Agents Away, BYTE, May 1994, pp. 113-118.
153. Weiser, Mark, Some Computer Science Issues in Ubiquitous Computing, Communications of the ACM, July 1993, Vol. 36, No. 7, pp. 74-84.
154. Weissman, David, Allen H. Levesque, Richard A. Dean, Interoperable Wireless Data, IEEE Communications, February 1993, pp. 68-77.
155. Wellner, Pierre, Interacting with Paper on the Digital Desk, Communications of the ACM, July 1993, Vol. 36, No. 7, pp. 86-96.
156. Werner, Kenneth I., The flat panel's future, IEEE Spectrum, November 1993, pp. 18-26.
157. Wittgenstein, Ludwig, Tractatus logico-pilosophicus, Suhrkamp, Frankfurt am Main, 1963, ISBN 3-518-10012- 2 (especially the paragraphs 4.016-4.0641).
158. Woodward Sr., Ollie C., Tom Long, Display Technologies, BYTE, July 1992, pp. 159-168.
159. Xerox, Xerox introduces 'Liveboard', Xerox product information.
160. Xu, L., A. Krzyzak, C. Y. Suen, Methods of Combining Multiple Classifiers and Their Applications to Handwriting Recognition , IEEE Transactions on Systems, Man and Cybernetics, 1992, Vol. 22, Issue 3, pp. 418-435.
161. Younse, Jack M., Mirrors on a chip, IEEE Spectrum, November 1993, pp. 27-31.

Index Terms

• Computing methodologies

  • Machine learning

• Human-centered computing

  • Human computer interaction (HCI)

    • Interaction devices

      • Touch screens