Ukuze ukwazi ukulayisha inethiwekhi yesistimu yokugada ividiyo eya ngokuba nzima, iswishi idinga ukufinyelela kumakhamera engeziwe, futhi iba nkulu ivolumu yedatha yeswishi. Iswishi kufanele ibe nekhono elizinze kakhulu lokuguqula idatha ukuze idlulise amanani amakhulu kanye nedatha yevidiyo ngokuqhubekayo. Ngakho-ke, ingabe iswishi ye-ethernet kufanele ikhethe u-100M noma 1000M?

Idatha edluliswa ngeyunithi ngayinye ngesikhathi sokudluliswa kwedatha ibizwa ngokuthi i-code stream, uma inani ledatha elidluliselwa yikhamera ngaphansi kweswishi lidlula umthamo wokudlulisela wechweba elithile, lizokwenza futhi ukuthi le mbobo ilahle inani elikhulu ledatha futhi dala izinkinga.

Isibonelo, ukushintshwa kwe-100M kuyisa phambili ivolumu yedatha engaphezu kuka-100M, okuzobangela inani elikhulu lokulahleka kwephakethe, okuholela ekumiseni kwesikrini. Ngakho-ke, mangaki amakhamera owadingayo ukuze ukhethe ukushintshwa kwe-gigabit?

Kunendinganiso, kuye ngenani ledatha edluliswa imbobo yekhamera ye-uplink: uma inani ledatha elidluliselwe imbobo ye-uplink likhulu kuno-70M, khetha imbobo ye-gigabit, okungukuthi, khetha inkinobho ye-gigabit noma i-gigabit uplink switch. .

Kukhona indlela yokubala esheshayo nendlela yokukhetha: inani lomkhawulokudonsa = (umfudlana omncane + umfudlana omkhulu) * inani lamashaneli * 1.2:

① Inani lomkhawulokudonsa> 70M, sebenzisa i-gigabit;

②Inani lomkhawulokudonsa

Umbuzo 1: Inqubo yokubala yokusakaza ikhodi icace kakhulu, kodwa kungani kufanele iphindwe ngo-1.2?

Ngoba ngokusho kwesimiso sokuxhumana kwenethiwekhi, ukuhlanganisa amaphakethe wedatha kuphinde kulandele iphrothokholi ye-TCP/IP, futhi ingxenye yedatha idinga ukumakwa ngezinkambu zesihloko sesendlalelo ngasinye sephrothokholi ukuze idluliselwe kahle, ngakho unhlokweni uzophinde abe ingxenye ethile ye-overhead.
I-4M bit rate kanye ne-2M bit rate yekhamera esivame ukukhuluma ngayo ibhekisela kusayizi wengxenye yedatha. Ngokwesilinganiso sokuxhumana kwedatha, i-headhead overhead ilandisa cishe ngama-20%, ngakho-ke ifomula kufanele iphindwe ngo-1.2.

Umbuzo 2: Kungani i-70M ingeyona i-100M?

Ikakhulukazi ukucabangela ukuqhuma kwethrafikhi. Ukusakazwa kwedatha yevidiyo yakhiwe ngozimele abaningi. Ukusakazwa kwedatha okubonakala kushelela empeleni kunokwaziswa okuningi okusheshayo. Lesi simo sidinga ukushintshela kubhafa futhi silungise ukuguquguquka kwedatha.
Iswishi igcina-phambili-esitolo-phambili le datha, ngakho kuyanconywa ukuthi ube nokubhukha okuthile. Lapho uklama inethiwekhi yokushintsha, kungaba nokubhukha okungu-30% -40%. Ngembobo engu-100M, kuyanconywa ukuthi ithrafikhi yokudlulisela phambili ingeqi ku-70M.

I-Shenzhen JHA Technology Co., Ltd, Umhlinzeki Weminyaka eyi-13 Onesipiliyoni Womhlaba Wonke Wesixazululo Sokuxhumana Kwedatha Yezimboni, Ukusebenza Okuthembekile kanye Nokwesekwa Okungantengantengi.