75 дюймов Pizarron портативная умная доска Профессиональный цифровой планшет для обучения Promethean интерактивная

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75inch Pizarron Portable Smart Board Professional Digital Writing Tablet For Educational Promethean Interactive Whiteboard












Product Description

Product Description
















Specification

Specification























































































































































Smart Board Spec


Available screen size


55" 65"75" 82" 85" 86" 98"


chip


MSD560


MSD811


MSD848


RAM/ROM


2GB/16GB


4GB/32GB


3GB/32GB


Operation


Android 9.0


Android 8.0


Android 8.0


CPU


Dual-core A73 and dual-core A53 1.5GHZ


screen size


55" 65"75" 82" 85" 86" 98"(built-in camera optional)


color


Black


Display Protection


Optional: 4mm ordinary explosion-proof glass or AG anti-glare glass


Backlight type


DLED


Display size (mm)


different inch have different size


Resolution


4K(3840 x 2160)


Overall peak brightness


250cd/m2


Dynamic Contrast


5000:1


viewing angle


H/V: 178/178 degrees


screen ratio


16:9


display color


10Bit, 16.7M


Built-in camera (8 array microphones)


max significant pixel


3264*2448 (12 million pixels, backward compatible with common resolutions such as 1080p/720p/480i)


Camera dual system follow-up recognition


Contains 8 built-in array microphones, supports transparent transmission of camera modules after dual system switching


Image Sensor


IMX179(1/3.2”)COMS


Effective pickup distance


10 meters (high sensitivity [-38dB of 94 dB SPL@1KHz] / two-channel stereo)


Pickup Module Signal to Noise Ratio


61dB of(94 dB SPL@1KHz,A-weighted)


Support function


echo cancellation
beamforming
sound source localization
omnidirectional microphone
Remove conference room mixes to maintain vocal restoration and voice recognition
Automatic Gain - AGC smooths highs and enhances lows to provide a consistent calling experience from far and near














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