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`United States Patent
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`US 6,226,686 B1
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`(10) Patent No.:
`(12)
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`May1, 2001
`(45) Date of Patent:
`Rothschild et al.
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`US006226686B1
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`(54) SERVER-GROUP MESSAGING SYSTEM FOR
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`INTERACTIVE APPLICATIONS
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`(75)
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`Inventors: Jeffrey Jackiel Rothschild, Los Gatos;
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`Daniel Joseph Samuel, Sunnyvale;
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`Marc Peter Kwiatkowski, Los Gatos,
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`all of CA (US)
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`OTHER PUBLICATIONS
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`Ahuja, S.R., et al., “The Rapport Multimedia Conferencing
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`System,” Conference on Office Information Systems 1988,
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`pp. 1-7.
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`(List continucd on next page.)
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`(73) Assignee: HearMe, Mountain View, CA (US)
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`Primary Examiner—Zarm Maung
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`(74) Attorney, Agent, or Firm—Sterne, Kessler, Goldstein,
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`& Fox PLLC
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`(*) Notice:—Subject to anydisclaimer, the term of this
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`patent is extended or adjusted under 35
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`U.S.C. 154(b) by 0 days.
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`(57)
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`ABSTRACT
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`(21) Appl. No.: 09/407,371
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`(22) Filed:
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`Sep. 28, 1999
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`Related U.S. Application Data
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`(63) Continuation ofapplication No. 08/896,797,filed on Jul. 18,
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`1997, now Pat. No. 6,018,766, which is a continuation of
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`application No. 08/595 323, filed on Feb. 1, 1996, now Pat.
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`No. 5,822,523.
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`(51)
`sence GOOF 15/16
`Int. Cl.’ .....
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`ssesssesssseessereessseiees 709/245; 709/218
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`(58) Field of Search oo. eecceeree 709/218, 206,
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`709/230, 236, 207, 231, 232, 204, 245;
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`370/389, 390
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`(56)
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`4,470,954
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`References Cited
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`U.S. PATENT DOCUMENTS
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`ceeeee 370/60
`9/1984 Cotton et al. cic
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`wee 273/85 G
`2/1986 Strick sees
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`4/1988 Cotton et al. ve. 370/60
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`2/1989 Naron et al. wees
`vee 370/94
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`A method for deploying interactive applications over a
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`network containing host computers and group messaging
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`servers is disclosed. The method operates in a conventional
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`unicast network architecture comprised of conventional net-
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`work links and unicast gateways and routers. The hosts send
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`messages containing destination group addresses by unicast
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`to the group messaging servers. The group addresses select
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`message groups maintained by the group messaging servers.
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`For each message group, the group messaging servers also
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`maintain a list of all of the hosts that are members of the
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`particular group.
`In its most simple implementation, the
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`method consists of the group server receiving a message
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`from a host containing a destination group address. Using,
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`the group address, the group messaging scrver then sclccts
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`a message group whichlists all of the host members of the
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`group which are the targets of messages to the group. The
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`group messaging scrver then forwards the message to cach
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`of the target hosts. In an interactive application, many
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`messages will be arriving at the group server close to one
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`another in time. Rather than simply forward each message to
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`its targeted hosts, the group messaging server aggregates the
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`contents of each of messages received during a specified
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`time period and then sends an aggregated message to the
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`targeted hosts. The time period can be defined in a number
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`(List continued on next page.)
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`of ways. This method reduces the message traffic between
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`LORLEIGN PAPLN'T DOCUMENTS
`hosts in a networked interactive application and contributes
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`to reducing the latency in the communications between the
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`(EP)
`2/L99OS
`veecssesesessseesereseseees HO4L/12/18
`0 637 149
`hosts.
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`8/1993 (WO)
`WO 93/15572
`coecseceeeseteeecesnsees 11041/3/26
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`WO 95/10908 4/1995(WO)oeceeceeceeeeerteereees HO4L/12/18
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`WO 95/10911 ALL9DS(WO)ciecsscecsseresescrreceseees HO04L/29/06
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`19 Claims, 11 Drawing Sheets
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`96
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`Host C Receives
`Yost C Sends
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`ets [sc [Pt[2 [Pa[prs s [c] J
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`99
`103
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`Host A Receives: Host A Sends:
`s[sG
`A
`PI
`SLA LH
`[2
`[ps]
`pe
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`101
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`HostB Sends
`i
`Host8 Receives
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`BLS
`|S
`i|f
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`[ec f[ret[re]P
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`Host D Receives
`Host D Sands
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`Ds {sc|P4 s [0[« v2|Pa[Pi]
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`100
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`36
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`Group Server Sands
`Group Server Receives
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`P2
`F3
`Ba
`A
`3
`G
`Pi
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`404
`S
`iAH
`7)
`Upset Pe
`B] S|
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`s [Pi|r2{[Lo [Kk ps vp, s ie]
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`sje qs
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`12 J
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`Petitioner Valve - Ex. 1002, Page 1
`Petitioner Riot Games,Inc. - Ex. 1002, p. 1
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`Petitioner Riot Games, Inc. - Ex. 1002, p. 1
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`Petitioner Valve - Ex. 1002, Page 1
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`

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`US 6,226,686 B1
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`Page 2
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