Digital video recorders (DVRs) Comparison: ATV, Geovision (4)
| Contact manufacturer | Contact | Contact | Contact | Contact |
| Channels |
9
|
4
|
16
|
1
|
| Storage Capacity GB |
120
|
80
|
80
|
80
|
| Image per second (IPS) |
max 25 PAL, 30 NTSC
|
25(PAL) / 30(NTSC)
|
50(PAL) / 60(NTSC)
|
16(PAL) / 20(NTSC)
|
| Signal Mode |
PAL, NTSC
|
PAL / NTSC
|
PAL / NTSC
|
PAL / NTSC
|
| Compression Type |
--
|
Wavelet, MPEG-4
|
Wavelet, MPEG-4
|
Wavelet, MPEG-4
|
| Resolution |
--
|
640 x 480
|
640 x 480
|
640 x 480
|
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