Kode yo kumenya amakosa (kode yo kugenzura parite): kode yo kugenzura parite igizwe n-1 biti yamakuru hamwe nibintu 1 byo kugenzura.Igice cya N-1 amakuru yamakuru ni amakuru yemewe mumakuru twohereje, kandi 1-biti yo kugenzura ikoreshwa mugutahura amakosa no kode y'ikirenga.
Kugenzura bidasanzwe:niba umubare wa 1 muriki ruhererekane uringaniye, ongeraho 1 imbere yacyo, kandi umubare wa 1 ube udasanzwe, ubundi wongere 0;
Ndetse ugenzure:niba umubare wa 1 muriki ruhererekane udasanzwe, ongeramo 1 imbere yacyo, numubare wa 1 ube ndetse, ubundi ongeraho 0;
Kurugero: (1) 1111 cheque idasanzwe ni 11111 niyo cheque ni 01111
(2) 1110 cheque idasanzwe ni 01110 ndetse no kugenzura ni 11110
Ikiranga kode yo kugenzura ni uko ishobora kumenya gusa amakosa adasanzwe, kandi ubushobozi bwo kumenya amakosa ni 50%, bidashobora gukosorwa.
Kode yo kumenya amakosa (CRC cyclic redundancy check code): nuburyo bwo kugabana abagore benshi kugirango bamenye amakosa.Buri biti byumugozi bifatwa nkibintu byinshi, kandi ibikorwa bya modulo-2 byemewe.
Kubara inzira yo kohereza impera ni: ikadiri yamakuru yoherejwe + kugenzura urutonde rwa r bits, kubona ikadiri yamakuru yoherejwe, hanyuma ukore modulo-2 igabana hamwe na polinomial yakozwe kugirango ifate ibisigaye, aribyo Ikadiri ya FCS igenzura ikurikirana kugirango yongerwe.
Kubara inzira yo kwakira iherezo ni: iyo kwakira impera yakiriye ikadiri, ikora modulo-2 igabana hamwe na polinomial yakozwe, hanyuma igenzura ibisigaye.Niba ibisigaye ari 0, bivuze ko inzira yo kohereza ari ibisanzwe, hanyuma ikemera amakuru.Niba atari 0, bivuze ko inzira yo kohereza idasanzwe, hanyuma ikajugunya amakuru.
Ibyavuzwe haruguru nubusobanuro bwubumenyi bwa "kode yo kumenya amakosa" yazanwe na Shenzhen HDV fotoelectric Technology Co., Ltd.Ibicuruzwa byitumanaho byakozwe na sosiyete bitwikiriye;
Ibyiciro by'amasomo: moderi ya fibre optique, Ethernet, optique fibre transceiver modules, optique ya fibre igera module, SSFP optique module, na SFP optique, n'ibindi.
Icyiciro cya ONU: EPON ONU, AC ONU, fibre optique ONU, CATV ONU, GPON ONU, XPON ONU, n'ibindi.
Icyiciro cya kera: OLT, GPON OLT, EPON OLT, itumanaho OLT, nibindi
Ibicuruzwa byavuzwe haruguru birashobora gutanga inkunga kubintu bitandukanye byurusobe.Itsinda ryinzobere kandi rikomeye R&D rirashobora gufasha abakiriya bafite ibibazo bya tekiniki, kandi itsinda ryubucuruzi ryatekereje kandi ryumwuga rirashobora gufasha abakiriya kubona serivise nziza mugihe cyo kubanziriza inama ndetse nakazi nyuma yumusaruro.Murakaza neza kuri twandikire kubibazo byose.
