516810 New51etter, 13, 3 Mu1t1med1a 5ynchr0n12at10n and Med1ca1 App11cat10n5 (Draft) Pa9e 10 Ju110 E5c06ar, Wa1ter M1111ken, Re91na R05a1e5 801t, 8eranek, and Newman 5ynchr0n12at10n 15 a de51ra61e 5erv1ce f0r mu1t1med1a 6ecau5e netw0rk5 can ru1n the 0r191na1 t1m1n9 re1at10n5h1p5 0f mu1t1med1a data. 7he 155ue may 6e part1cu1ar1y re1evant f0r med1ca1 app11cat10n5 51nce they are 11ke1y t0 u5e h19h f1de11ty f10w5. 7hu5, 1n a55e551n9 the mu1t1med1a re4u1rement5 f0r med1ca1 app11cat10n5, 1t 15 we11 t0 m1nd the 5erv1ce5 and re4u1rement5 that w111 character12e 5ynchr0n12at10n. We u5e 5evera1 examp1e5 0f mu1t1med1a med1ca1 app11cat10n5 t0 111u5trate the d1ver51ty 0f 5ynchr0n12at10n 5erv1ce5 and re4u1rement5. 7hey w111depend n0t 0n1y 0n the nature 0f the med1a 6e1n9 5ynchr0n12ed 6ut a150 0n the type 0f app11cat10n 1t5e1f. 50me 6a51c 5ynchr0n12at10n 5erv1ce5 are 1nter f10w 5ynchr0n12at10n, 1ntra f10w 5ynchr0n12at10n, 5chedu11n9 0f c0mp0nent de11very f0r mu1t1med1a 06ject5, f1ex161e a550c1at10n 0f f10w5 f0r 5ynchr0n12at10n, and adapt1ve de1ay e4ua112at10n f0r 5ynchr0n12at10n. 5ynchr0n12at10n 5y5tem5 mu5t make pr0v1510n5 f0r tran5ferr1n9 t1m1n9 1nf0rmat10n a60ut the f10w5. A c0m61nat10n 0f t1me5tamp and 5e4uence num6er 15 0ne effect1ve appr0ach. C10ck 5ynchr0n12at10n acr055 a netw0rk 15 a fea5161e and effect1ve way t0 pr0v1de 1nter f10w 5ynchr0n12at10n f0r ar61trary f10w t0p01091e5. Adapt1ve 5erv1ce5 mu5t a150 6e a61e t0 exchan9e c0ntr01 1nf0rmat10n am0n9 f10w5. 7h15 w111re4u1re mechan15m5 f0r d15tr16ut1n9 pr0t0c01 c0ntr01 1nf0rmat10n. 7h15 may re4u1re 5erv1ce5 11ke c0ntr01 data mu1t1p1ex1n9 at 1ayer5 a60ve the netw0rk 1ayer. D1fferent app11cat10n5 and 1mp1ementat10n5 are 11ke1y t0 p05e d1fferent 5ynchr0n12at10n re4u1rement5. 7hu5 1t 15 c0nven1ent t0 1ntr0duce the a6111ty t0 cu5t0m12e 50me 0f the 5ynchr0n12at10n funct10n5, 11ke the 4uantum 0f 5ynchr0n12at10n, the adapt1ve pr0ce55, and the 5ynchr0n12at10n 9uarantee5. A5 med1ca1 app11cat10n5 emer9e, 1t w111 6e 1mp0rtant t0 ac4u1re exper1menta1 exper1ence w1th the1r mu1t1med1a need5, 1nc1ud1n9 5ynchr0n12at10n, t0 6etter under5tand the m05t appr0pr1ate 501ut10n5. 5pec1a1 155ue 0n Mu1t1med1a Med1ca1 Educat10n 5eptem6er 1993
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