DVR cctv drone video recording unit - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: December 23, 2019, 11:26:34 pm
content: DVR cctv drone video recording unitmy question isis anybody familiar with this type of DVR unit?anybody has this type of DVR unit? anybody bought this DVR unit?any good technical reviews of this DVR unit? what chips are used?the unit sold as a cctv or drone DVR on aliexpress.has an advertised video recording resolution ofHD 1280x720 ....... ?VGA 640x480 ........ cctv composite videoCIF 320x240 ........ ?this is set by use of a control file that you edit with a PC.I am familiar with this type control files used by other DVR units.my question iscan a AD722 ic be made to run at analog HD of 1280x720?http://www.eecg.toronto.edu/~tm3/ad722.pdfthe AD722 is an analog VGA to composite video converter chip.so the AD722 is not a scale converter. but will it? convert analog R,G,B, 1280x720 in to HD analog composite video?so 720p VGA video from say a Retro gaming PC can be recorded with this type of DVR?how do you get HD 1280x720 in to a two pin analog input?most computer VGA video has 15 pins for the R,G,B, & sinc lines .the idea is to record video in 1280x720 at 30 fps.that is software independent of the host unit.

author: jonovid
author_rank: Super Contributor
timestamp: December 25, 2019, 07:50:51 am
content: Up-datemaybe someone with programming can fix or do some experimentation with this .exe DVR set-up software so it can have more options.https://drive.google.com/file/d/1Q_oSMJC1aPWkqjAxf6TjmeZ9aFXt_fx1/view?usp=sharingFPV 1 channel DVR set up tool English. add this .exe to your TF or SD cardchin-lish = mangled englishThis is a 1 channel video recorder works with Max.32GB micro SD card. Mini size and super light,easy to carry,support HD analog camera for recording, Max. resolution 1080x720.Support Analog video signal input only.looks like DVR supports a high resolution analog cctv mode!FPV DVR just arrived in the postin a box with no user guide. no instructionsmore images this is of the pcb and this from my images , not theirs.Up-dateGM7150BC is a 9-bit video input pre-processing chip.https://datasheet.lcsc.com/szlcsc/1809111833_CORPRO-GM7150BC_C245017.pdfIt is connected with PC or DSP to form application system.It contains 1 analog processing channel, which can realize CVBS, S-Video video signal source selection, A / D conversion,Automatic clamping, automatic gain control (AGC), clock generation (CGC), multi-standard decoding, brightness / contrast / saturationControl (BCS).2 Featuresa) One 30MSPS 9-bit A / D converterb) CVBS, S-Video video solutions supporting NTSC (M / J / 4.43) and PAL (B / D / G / H / I / M / N / NC)codec) 2 analog video input ports for selectiond) White peak control, automatic gain control, anti-aliasing filtering for chip programminge) Programmable video output format:-8bit 4: 2: 2 ITU-R BT.656 YCbCr, AV code embedded line, field sync signal-8bit 4: 2: 2 ITU-R BT.601 YCbCr and line and field synchronization signal outputf) Programmable HSYNC / VSYNC output position, width and FID outputg) Can control brightness, contrast and saturation (BCS)h) With chrominance transient enhancement (CTI) and chrominance automatic gain control processingi) Adaptive 2D-5 line comb filter and chroma notchj) Automatic video standard detection (NTSC / PAL) and switchingk) Patented design structure, can perform line and field lock processing on weak, noisy or unstable signalsl) 14.31818MHz single clock frequency crystalm) On-chip clock generation, including DDS, PLL for line lock system clock frequency generationn) Real-time status control (RTC) outputo) With I2C bus, 400kbits / s data ratep) With low power consumption mode and power-on reset operationq) QFN32 package60 pin DH9392A3-1848?? unknown8 pin Z CE1813 25D16CZTE6 P1H837 maybe a high efficiency 3A, 36V,synchronous step down converterUp-dateworks ok a 480p but cannot find analog video monitor for 720pneed more time to test this unit