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EE 122: Networks & Protocols Welcome Our New TA
EE 122: Networks & Protocols Ion Stoica (and Brighten Godfrey) TAs: Lucian Popa, David Zats and Ganesh Ananthanarayanan http://inst.eecs.berkeley.edu/~ee122/ (Materials with thanks to Vern Paxson, Jennifer Rexford, and colleagues at UC Berkeley) 1 Welcome our New TA Ganesh Ananthanarayanan E-mail: [email protected] Office hours: WF 11-12; location: TBA Discussion section: TBA 2 1 Goals for Today’s Class Type of Networks And the key concept of multiplexing What’s a Protocol ? 3 What Global (non-digital) Communication Network Do You Use Every Day? Roughly speaking, how does it work? 4 2 What’s Another Such Network That You Use Every Day? 5 Taxonomy of Communication Networks Communication networks can be classified based on the way in which the nodes exchange information: Communication Network 6 3 Taxonomy of Communication Networks Communication networks can be classified based on the way in which the nodes exchange information: Communication Network Broadcast Communication Network 7 Broadcast Communication Networks Information transmitted by any node is received by every other node in the network Examples? Usually in LANs ( Local Area Networks) E.g., Ethernet (classical), WiFi E.g., lecture! What problems does this raise? Problem #1: limited range Problem #2: privacy of communication Problem #3: coordinating access to the shared communication medium ( Multiple Access Problem ) 8 4 Taxonomy of Communication Networks Communication networks can be classified based on the way in which the nodes exchange information: -
Searchable PDF Index
TELEPHONE COLLECTORS INTERNATIONAL Telephone Collectors International is an organization of telephone collectors, hobbyists and historians who are helping to preserve the history of the telecommunications industry through the collection of telephones and telephone related material. Our collections represent all aspects of the industry; from the very first wooden prototypes that started the industry to the technological marvels that made the automatic telephone exchange possible. If any of this interests you, we invite you to join our organization. Look around and see what we have to offer. Thanks for stopping by! Telephone Collectors International website including become a member: http://www.telephonecollectors.org/ Questions or comments about TCI? Send e-mail to [email protected] ********************************************************************************* Books Recommended by the editors: Available now ... Old-Time Telephones! Design, History, and Restoration by Ralph O. Meyer ... 264pp Soft Cover 2nd Edition, Expanded and Revised ... A Schiffer Book with Price Guide for Collectors Available at Phoneco.com or Schiffer Publishing, Ltd., 4880 Lower Valley Rd, Atglen, PA 19310 e-mail: [email protected] ********************************************************************************** Coming Soon: TELEPHONE Dials and Pushbuttons Their History, Development and Usage by Stanley Swihart ... 2 volumes, 300 pp ea. Box 2818, Dublin, CA., 94568-0818. Phone 1 (925)-829-2728, e-mail [email protected] ********************************************************************************* -
The Myth of the Sole Inventor
Michigan Law Review Volume 110 Issue 5 2012 The Myth of the Sole Inventor Mark A. Lemley Stanford Law School Follow this and additional works at: https://repository.law.umich.edu/mlr Part of the Intellectual Property Law Commons Recommended Citation Mark A. Lemley, The Myth of the Sole Inventor, 110 MICH. L. REV. 709 (2012). Available at: https://repository.law.umich.edu/mlr/vol110/iss5/1 This Article is brought to you for free and open access by the Michigan Law Review at University of Michigan Law School Scholarship Repository. It has been accepted for inclusion in Michigan Law Review by an authorized editor of University of Michigan Law School Scholarship Repository. For more information, please contact [email protected]. THE MYTH OF THE SOLE INVENTORt Mark A. Lemley* The theory of patent law is based on the idea that a lone genius can solve problems that stump the experts, and that the lone genius will do so only if properly incented. But the canonical story of the lone genius inventor is largely a myth. Surveys of hundreds of significant new technologies show that almost all of them are invented simultaneously or nearly simultaneous- ly by two or more teams working independently of each other. Invention appears in significant part to be a social, not an individual, phenomenon. The result is a real problem for classic theories of patent law. Our domi- nant theory of patent law doesn't seem to explain the way we actually implement that law. Maybe the problem is not with our current patent law, but with our current patent theory. -
Who Invented the Telephone?: Lawyers, Patents, and the Judgments of History
Who Invented the Telephone?: Lawyers, Patents, and the Judgments of History Christopher Beauchamp Technology and Culture, Volume 51, Number 4, October 2010, pp. 854-878 (Article) Published by The Johns Hopkins University Press DOI: 10.1353/tech.2010.0038 For additional information about this article http://muse.jhu.edu/journals/tech/summary/v051/51.4.beauchamp.html Access Provided by Princeton University at 02/10/13 1:14PM GMT 05_51.4beauchamp 854–78:03_49.3dobraszczyk 568– 10/31/10 11:04 AM Page 854 Who Invented the Telephone? Lawyers, Patents, and the Judgments of History CHRISTOPHERBEAUCHAMP Who invented the telephone? In the United States, this question has a widely known answer. Alexander Graham Bell routinely ranks among the hundred “greatest” or “most influential” Americans, whether chosen by historians or internet polls.1 His cry of “Mr. Watson—come here—I want to see you,”al- though often misquoted, is one of the best-known exclamations in Amer- ican history.2 More than one hundred and thirty years after the event, Bell and Watson’s first telephone call remains a classroom staple: a standard de- vice for teaching Americans about the nation’s inventive past, and even for placing technological change at the center of mainstream history.3 Christopher Beauchamp is the Sharswood Fellow in Law and History at the University of Pennsylvania Law School. In an earlier form, this essay received the Levinson Prize of the Society for the History of Technology. The author is grateful for the advice of Anisha Dasgupta, Martin Daunton, Richard John, Robert MacDougall, Christine MacLeod, John Staudenmaier, and four anonymous referees for T&C. -
65 F1 86, Federal Reporter
86 "J'EDERALBEPORTER, vol. 65. you beyond a rea$onabledoubt of the truth of the charge laid against the defendant, then your duty is to return a verdict of not guilty~ The policy of the government in regard to pensions and the manage- ment of the pension office in conducting the affairs comtnitted to its charge are not in i$sue in this case. The question for your decision is whether or not the defendant is guilty of the charge set forth in, the second count of the indictment. Ifthe evidence shows his guilt beyond a reasonable doubt, so say' by your verdict. If the govern- m(:'nt has failed to prove the truth of the charge beyond a reasonable- doubt, find the defendant not guilty. The case is one of importance. Consider it impartially, dispassionately. Give to both parties the benefit of the soundest and clearest judgment you can bring to bear' upon thequestiQns submitted to you,and.return the verdict which in your bel:lt judgment the evidence demands and warrants, viewed iu the light of theinstructions I have given you upon the law. llNITED STATES ... AMERICAN BELL TEL. CO. et aI. (Circuit Court, D. Massachusetts. December 18, 1894.) No.841. 1. PATENTS-Two PATENTS FOR SAME 'INVENTION - TELEPHONE TRANSMITTER., Patent; No. 463,569, issued November 17, 1891, to Emile Berliner, as; assignor to the American Bell Telephone Company, .for combined tele- graph' and telephone, is for a device for transmitting articulate speech, which is identical with the device for the same purpose covered by patent No. 238,969, issued to Emile Berliner November 2, 1880, for electric tele- phone, and is 'void. -
THE INVENTIVE THINKING CURRICULUM PROJECT an Outreach Program of the United States Patent and Trademark Office
Inventive Thinking Page 1 of 53 THE INVENTIVE THINKING CURRICULUM PROJECT An Outreach Program of The United States Patent and Trademark Office The activities featured in this project are appropriate for all student populations http://www.uspto.gov/web/offices/ac/ahrpa/opa/projxl/invthink/invthink.htm 8/24/2004 Inventive Thinking Page 2 of 53 Disclaimer This report was prepared as a project of the U.S. Government. Neither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the U.S. Government or any agency thereof. CONTENTS Page Introduction. 1 Activities: #1 Introducing Inventive Thinking 9 #2 Practicing the Creative Part of Inventive Thinking. 11 #3 Practicing Inventive Thinking with the Class 14 #4 Developing an Invention Idea. 16 #5 Brainstorming for Creative Solutions. 18 #6 Practicing the Critical Parts of Inventive Thinking. 19 #7 Completing the Invention 20 #8 Naming the Invention 21 #9 Optional Marketing Activities 23 #10 Parent Involvement 25 #11 Young Inventors' Day 26 #12 Enrichment: Stories about Great Thinkers and Inventors 27 Copymasters 39 http://www.uspto.gov/web/offices/ac/ahrpa/opa/projxl/invthink/invthink.htm 8/24/2004 Inventive Thinking Page 3 of 53 Appendix 61 INTRODUCTION Since the early 1980s, the U.S. -
Ode to Charles: Friend, Neighbor
November 24, 2020 The Our 27th Year of Publishing FREE (979) 849-5407 PLEASE Weekly © 2020 Bulletin mybulletinnewspaper.com TAKE ONE LAKE JACKSON • CLUTE • RICHWOOD • FREEPORT • OYSTER CREEK • JONES CREEK • ANGLETON • DANBURY • ALVIN • WEST COLUMBIA • BRAZORIA • SWEENY Ode to Charles: Is it COVID or friend, neighbor just the crud? By Edward A. Forbes By John Toth The Bulletin The Bulletin Thanks for the memories, Charles I woke up in the middle of the and Linda Miller. night, freezing. The thermostat read They were dear friends. During 78 degrees. Why was I shaking? a difficult time in my life, they were My joints were hurting. I jumped friends to me and my children. I into a nice, warm shower and took couldn’t have loved them more. two Advil. Home duties permitting, I always Did I catch COVID? That’s the stopped at the Millers on my way first thought that ran through my home. mind. Charles sat outside his home, I wear a mask in public, stay away or later, in the screened sun room from crowds, wash my hands, use added to their home. Charles and hand sanitizer and do everything I each had a beer - Miller Lite, of course, and he would smoke a ciga- rette. I had quit smoking in 1991 and Ramblings (Continued on Page 12) else I am supposed to. But I felt like crud, and the pandemic was the first thing I thought of. Leon Hale asked I didn’t have all the COVID symp- toms. But with this pandemic, you never know. Anything is possible. -
Emile Berliner by Bob Estreich Lexander Graham Bell Invented the There He Saw Bell's Telephones
Emile Berliner by Bob Estreich lexander Graham Bell invented the There he saw Bell's telephones. There was telephone. Well, he invented one that general amazement at the new device, but Aworked, but not very well. Bell's eventual Berliner noticed its faults as well. Although the success rested on the work of other inventors Centennial phone and its later derivatives were who fixed the problems or found a better way. adequate receivers if they had a strong enough Emil (he later changed it to Emile) Berliner was signal, they were poor transmitters. They were one such. faint, noisy and clumsy. Watson described using the phones as like holding a packing case in Berliner was born in Hanover, Germany on May each hand. They were based on the induction 20, 1851. In 1870 he left Hanover for the United principle - a varying electric current passed States. He had been offered a job with a family through a coil and influenced a nearby friend, and he left Germany to avoid military diaphragm (receiver), or the movement of the service. He worked as a shop assistant for some diaphragm influenced the current flowing years, then got a job as cleanup man in the through the coil (transmitter). The signal laboratory of Constantine Fahlberg, who dropped off quickly with increasing distance. invented saccharine. This fired his interest in The receiver part was also the microphone, so science and inventing. He furthered his any outside noise interfered with the received education at a night school run by the Cooper voice. Institute, and learnt basic physics from a textbook given to him by a local drugstore Berliner came up with two improvements. -
The Master Switch: the Rise and Fall of Information Empires Free
FREE THE MASTER SWITCH: THE RISE AND FALL OF INFORMATION EMPIRES PDF Tim Wu | 368 pages | 29 Nov 2011 | Vintage Books | 9780307390998 | English | New York, NY, United States The Master Switch: The Rise and Fall of Information Empires by Tim Wu, Paperback | Barnes & Noble® Goodreads helps you keep track of books you want to read. Want to Read saving…. Want to Read Currently Reading Read. Other editions. Enlarge cover. Error rating book. Refresh and try again. Open Preview See a Problem? Details if other :. Thanks for telling us about the problem. Return to Book Page. In this age of an open Internet, it is easy to forget that every American information industry, beginning with the telephone, has eventually been taken captive by some ruthless monopoly or cartel. With all our media now traveling a single network, an unprecedented potential is building for centralized control over what Americans see and hear. Could history repeat itself wi In this age of an open Internet, it is easy to forget that every American information industry, beginning with the telephone, has eventually been taken captive by some ruthless monopoly or cartel. Could history repeat itself with the next industrial consolidation? Each invited unrestricted use and enterprising experiment until some would-be mogul battled his way to total domination. Here are stories of an uncommon will to power, the power over information: Adolph Zukor, who took a technology once used as commonly as YouTube is today and made it the exclusive prerogative of a kingdom called Hollywood. And foremost, Theodore Vail, founder of the Bell System, the greatest information empire of all time, and a capitalist whose faith in Soviet-style central planning set the course of every information industry thereafter. -
A Brief History of the Internet 1848 the Electric Telegraph
12/15/13 It is anticipated that the whole of the populous parts of the United States will, within two or three years, be covered with net-work like a spider's web. A Brief History of the Internet Hari Balakrishnan <[email protected]> When was this sentence written? 6.02 Fall 2013 Lecture #24 Several pictures taken from Wikipedia 6.02 Fall 2013 – Guest Lecture Lecture 24, Slide #1 6.02 Fall 2013 – Guest Lecture Lecture 24, Slide #2 1848 The Electric Telegraph • Cooke and Wheatstone, Railroad Telegraph, 1837 About the electric telegraph In The London Anecdotes, 1848 As quoted in Tom Standage, The Victorian Internet • First pickpocket arrest: 1844 • First murder arrest: 1845 6.02 Fall 2013 – Guest Lecture Lecture 24, Slide #3 6.02 Fall 2013 – Guest Lecture Lecture 24, Slide #4 1 12/15/13 The Morse-Vail Telegraph “The Victorian Internet” 1836: Morse design Vail: powerful electromagnets Morse Code (1835-1837) • By Morse & Vail 1891 • 1838: demo’d over 2 miles • 1844: US-sponsored demo between Baltimore and Washington DC America’s first telegram (1844) 6.02 Fall 2013 – Guest Lecture Lecture 24, Slide #5 6.02 Fall 2013 – Guest Lecture Lecture 24, Slide #6 Dots and Dashes Span The Globe Wireless to the Rescue! • Communications arms race in the Imperial James Clerk Maxwell (1831-1879) Age "... we have strong reason to conclude that light itself -- including radiant heat, and other – No nation could trust its messages to a foreign radiations if any -- is an electromagnetic power disturbance in the form of waves propagated – 1893: British-owned Eastern Telegraph Company through the electromagnetic field according to electromagnetic laws." Dynamical Theory of the and the French crisis in Southeast Asia Electromagnetic Field, 1864. -
Historical Perspectives of Development of Antique Analog Telephone Systems Vinayak L
Review Historical Perspectives of Development of Antique Analog Telephone Systems Vinayak L. Patil Trinity College of Engineering and Research, University of Pune, Pune, India Abstract—Long distance voice communication has been al- ways of great interest to human beings. His untiring efforts and intuition from many years together was responsible for making it to happen to a such advanced stage today. This pa- per describes the development time line of antique telephone systems, which starts from the year 1854 and begins with the very early effort of Antonio Meucci and Alexander Graham magnet core Bell and ends up to the telephone systems just before digiti- Wire 1Coil with permanent Wire 2 zation of entire telecommunication systems. The progress of development of entire antique telephone systems is highlighted in this paper. The coverage is limited to only analog voice communication in a narrow band related to human voice. Diaphragm Keywords—antique telephones, common battery systems, cross- bar switches, PSTN, voice band communication, voice commu- nication, strowger switches. Fig. 1. The details of Meucci’s telephone. 1. Initial Claims and Inventions Since centuries, telecommunications have been of great cally. Due to this idea, many of the scientific community interest to the human beings. One of the dignified per- consider him as one of the inventors of telephone [10]. sonality in the field of telecommunication was Antonio Boursuel used term “make and break” telephone in his Meucci [1]–[7] (born in 1808) who worked relentlessly for work. In 1850, Philip Reis [11]–[13] began work on tele- communication to distant person throughout his life and in- phone. -
Rethinking the Prospect Theory of Patents John F Duffyt
Rethinking the Prospect Theory of Patents John F Duffyt Edmund Kitch's prospect theory of patents has been hailed as "one of the most significant efforts to integrate intellectual property with property rights theory," but it has also remained highly controversial,generating criticisms that it is "without foundation" and "little influenced by any concern for reality." Although the prospect theory correctly predicts that, by ending rivalry, a grant of intellectualproperty rights can encourage efficient management of the property, the theory has been unable to accountfor the fundamental role that rivalry has in the patent system. This Ar- ticle explains that role. The key insight is that a patent race is not only a rivalry to claim patent rights; but also a rivalry to have those rights expire earlier Patent races thus limit monopoly rents and increase the consumer surplus from the innovation. The patent system parallels a method of naturalmonopoly regulationproposed by Harold Demsetz, who suggested that competition for an exclusive franchise could be harnessed as a means of constraining the monopolist. The so-called "prospect"features of the patent system are important not so much because they eliminate rivalry but because they channel it in ways that maximize the social benefits from the monopoly. This ap- proach explains the structure of patent rights in terms of property, competition, and natural mo- nopoly theory. INTRODUCTION Traditionally, the economic rationale for granting intellectual property rights in innovations has been that the rights provide an in- centive or reward for the sizeable investments needed to create the in- tellectual property disclosed in the patent document.' Because such t Professor of Law, George Washington University Law School.