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Kiem tra man hinh vs kiem tra camera - cai nao ban thuc su can?

Cap nhat lan cuoi 2026-05-05. Hai cong cu, hai van de khac nhau. Mot bai kiem tra man hinh kiem tra panel - pixel chet, pixel ket, ro sang vien, do dong nhat mau. Mot bai kiem tra camera kiem tra webcam - trinh duyet co the khoi dong camera khong, anh co dung huong khong, micro co thu am khong. Hai cai chia se cum tu "test thiet bi cua toi" nhung chan doan phan cung khac nhau. Huong dan nay neu ten trieu chung ma moi cai bat duoc, quy tac mot cau de chon, va cong cu chay kiem tra dung.

Cau tra loi trong 30 giay. Neu mot pixel khong doi mau, mot goc phat sang tren man hinh den, hoac ban thay banding khi nhin mot mau dac, chay bai kiem tra LCD / man hinh - mot chu ky mau toan man hinh phoi bay loi cap panel. Neu webcam khong khoi dong duoc trong tab trinh duyet, preview den, anh nguoc dau, camera bi soi guong khi ban khong mong doi, hoac micro khong hien level meter, chay bai kiem tra camera - preview truc tiep xac nhan trinh duyet co the doc camera va mic. Khop trieu chung voi bai kiem tra bat duoc no.

Khi nao dung bai kiem tra man hinh

Bai kiem tra man hinh (kiem tra LCD) la chan doan cap panel. Nguoi doc lap kin man hinh voi mot mau dac tai mot thoi diem (do, xanh la, xanh duong, trang, den, vang) va tim loi cua chinh panel. Pixel chet ngang den o moi mau. Pixel ket khoa o mot trong do/xanh la/xanh duong. Loi do dong nhat mau hien duoi dang mang sang hoac toi hon mot chut. Ro sang vien hien tren truong den nhu anh sang goc. Burn-in hien duoi dang bong ma mo cua mot anh truoc do tren mot truong phang.

Bai kiem tra man hinh KHONG can camera hay micro. KHONG yeu cau quyen trinh duyet nao. KHONG upload gi len server. Hoat dong tren bat ky thiet bi nao co the lap kin viewport voi mot mau - laptop, desktop, tablet, dien thoai, ChromeOS, trinh duyet smart TV. Neu bai kiem tra qua, panel on va bat ky van de hinh anh nao deu o cap, dau ra GPU, hoac OSD - doc huong dan di kem kiem tra LCD vs kiem tra display vs kiem tra monitor de thu hep them.

Khi nao dung bai kiem tra camera

Bai kiem tra camera (kiem tra webcam) la chan doan thiet bi dau vao. Nguoi doc bam Start Camera; trinh duyet yeu cau quyen; preview truc tiep hien thi cai camera truoc hoac sau thay, do phan giai no bao cao, va muc audio cua micro (khi micro trong pham vi). Y la xac nhan ba dieu truoc cuoc goi video: (1) trinh duyet co the doc camera, (2) anh dung huong o ti le canh dung, (3) micro tao ra level tren muc im lang.

Trieu chung chi bai kiem tra camera bat duoc: mot webcam hoat dong o tab nay nhung khong o tab khac (trang thai quyen trinh duyet), mot preview den sau khi nhan Start (driver hoac app khac giu camera), anh nguoc dau tren tablet (khoa huong), do phan giai sai duoc dua ra (mac dinh thiet bi vs duoc thoa thuan), camera truoc duoc chon khi ban muon camera sau, micro bi mute o cap OS. Khong cai nao trong do la van de panel; bai kiem tra LCD tren thiet bi co webcam chet se qua sach vi panel on. Huong dan di kem kiem tra camera vs kiem tra webcam di qua khac biet ten goi trong danh muc.

Cay quyet dinh 30 giay

Khop trieu chung voi bai kiem tra bat duoc no:

  1. Loi cap pixel tren man hinh (pixel chet, pixel ket, ro sang vien o den, banding mau o truong dac, giu lai anh) -> kiem tra LCD / man hinh. Hai phut, khong quyen, chay tren bat ky thiet bi nao co trinh duyet.
  2. Webcam hoac micro khong hoat dong dung (camera khong khoi dong, preview den, anh nguoc dau, micro khong co level, sai camera duoc chon) -> kiem tra camera. Trinh duyet yeu cau quyen camera/mic mot lan; preview truc tiep xac nhan thiet bi dau vao hoat dong.
  3. Ca hai (ban sap goi video va muon xac nhan laptop san sang) -> chay kiem tra man hinh truoc (khong can quyen), roi kiem tra camera, roi kiem tra micro. Huong dan di kem truoc cuoc goi video - chay cong cu nao sap xep tu tu ba cai.
  4. Khong chac loi o dau -> bat dau bang kiem tra man hinh. Day la cai nhanh nhat trong ba cai, khong can quyen, va loai bo loi dat nhat (mot tra panel). Neu qua, sang kiem tra camera tiep theo.

Tai sao moi cong cu chay khac nhau

Hai bai kiem tra chay tren be mat trinh duyet khac nhau va yeu cau thiet bi cac kha nang khac nhau. Bai kiem tra man hinh dung che do toan man hinh + mau nen dac; khong can quyen phan cung va hoat dong trong tab riengtu/an danh. Bai kiem tra camera dung API getUserMedia cua trinh duyet; can quyen camera ro rang (va tuy chon micro), va trinh duyet nho lua chon theo origin. Trang thai quyen do la ly do bai kiem tra camera doi khi "ngung hoat dong" ma khong canh bao - mot lua chon Deny truoc do van ton tai tren cung site cho den khi nguoi doc reset quyen trong trinh duyet.

Ham y: mot bai kiem tra man hinh qua tren thiet bi khong noi gi ve viec camera co hoat dong tren thiet bi do, va nguoc lai. Hai chan doan doc lap va phai duoc chay rieng khi ca hai be mat trong pham vi.

Cac cau hoi thuong gap

"Kiem tra man hinh" co giong "kiem tra camera" khong?

Khong. Bai kiem tra man hinh kiem tra pixel panel va backlight; bai kiem tra camera kiem tra webcam va micro. Ho chia se cum tu "test thiet bi cua toi" nhung nhin vao phan cung khac nhau. Mot so site dung "kiem tra man hinh" long leo cho bat ky kiem tra thiet bi nao - doc trang truoc; neu no chu ky mau dac, do la kiem tra man hinh (kiem tra LCD); neu no yeu cau quyen camera/mic, do la kiem tra camera (kiem tra webcam).

Co the mot cong cu chay ca hai cung luc khong?

Khong tren site nay. Bai kiem tra man hinh lap kin viewport; bai kiem tra camera render preview video - hai be mat va cham. Huong dan di kem truoc cuoc goi video - chay cong cu nao sap xep tu tu de ban bao quat ca hai trong hai phut.

Cai nao cho laptop co webcam tich hop?

Ca hai, theo thu tu. Chay kiem tra man hinh truoc de xac nhan panel on. Sau do chay kiem tra camera de xac nhan webcam tich hop khoi dong, huong len, va micro dang tao ra level. Checklist cu the cho laptop kiem tra man hinh cho laptop - checklist 5 phut di qua phia man hinh truoc; trang kiem tra camera bao quat phia webcam.

Cai nao chay nhanh hon?

Bai kiem tra man hinh, vi no khong can quyen. Mo trang, click mot mau, nhin man hinh - ban co cau tra loi trong duoi hai phut. Bai kiem tra camera yeu cau quyen camera (va tuy chon micro) truoc; preview truc tiep mat vai giay de khoi dong. Du tinh ~60 giay cho bai kiem tra man hinh, ~90 giay cho bai kiem tra camera neu thiet bi chua cap quyen camera.

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