Zao App with Public Safety

Introducing the World's first 35ms Latency Mobile Video Transmission Encoder/Transmitter for Teleoperation, 5G and other applications

Introducing the World's first 35ms Latency Mobile Video Transmission Encoder/Transmitter for Teleoperation, 5G and other applications

Developed in Japan, Smart-telecaster Zao-SH is a 5G compatible H.265 ultra-low latency live video transmitter equipped with next-generation video processing and transmission technology that reduces the glass to glass latency to 35 milliseconds. The latency in live video transmission has been a critical challenge, but we are now able to transmit live video from anywhere to anywhere near real time.

In addition to live broadcasting, the Zao-SH is also capable of remotely controlling automobiles and construction equipment for teleoperation applications. Leveraging 5G networks with the Zao-SH, high-quality videos with two-way audio and remote control signals can be transmitted within a very short network delay.

Core IP

Core IP

Definition of Terms

Shoot:The period from when the light enters the lens of the camera until video data is output to SDI/HDMI terminal (camera dependent part)
Capture:The period from capturing video data from SDI/HDMI and performing color space conversion until it is input to the encoder
Encode:The encoding (compression) time
Transfer:The period in which compressed data is extracted from the encoder and divided into communication packets for multilink transmission/reception.
Includes time for error correction and packet sorting between each connection
Decode:The decoding (uncompression) time
AV Sync:The time until adjusting audio and video timing and outputting to SDI/HDMI
Display:The period from SDI/HDMI output of the receiver to display the video on monitor (monitor-dependent part)

The core IP of our ultra low latency technology is RASCOW2, a robust H.265 HEVC encoding engine, and successor to our original codec management/communication protocol RASCOW (Realtime Auto Speed Control based On Waterway-model). RASCOW2 was developed to further solve the delay problem that occurs during simple transmission, and it achieves a faster and more efficient encoding process while controlling all transmission settings. This feature enables a significant reduction in the delay associated with compression.

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Remote Control Function

If you can reduce your video transmission from "seconds" to "35 milliseconds", what new use cases can you create? Zao-SH will open up a multitude of new possibilities for near zero real time applications.

For example, a receiver can be used to remotely control a car or construction equipment connected to Zao-SH in a remote location. Until now, the network delay was too large in live transmission systems and remote operation while watching the live video from the remote location was difficult. With the ultra low latency Zao-SH, teleoperation is smooth, and the live video displayed is close to real time from the remote location.
Control signals from the controller connected to the receiver are sent to the Zao-SH main unit and used to control a car or any type of machine.

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Remote Control Function

Package Includes:

  1. Industrial Camera
  2. Zao-SH Encoder
  3. Receiver System hardware
  4. Receiver software
  5. Hi-Speed Display
    Customization options available with other cameras/displays

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Ultra Low Latency H.265 Solution Package

Zao-SH Encoder in Connected Car Architecture

Connected Car Use Case Example

Video from multiple special cameras installed in a remote-controlled vehicle are compressed and transmitted to the remote-control seat in real time via LTE (radio waves of ordinary mobile phones). The control side decodes the received video and other information such as vehicle vibration to operate the accelerator, steering, brakes, etc. while watching the monitor. In this system, the time (latency/delay) until the video from the camera is compressed and transmitted back to the control side and displayed is an important factor. Soliton Systems has achieved under 200ms (1/5th of a second).

Ultra Low Latency H.265 Solution Video

Specifications

Transmission hardwareWeight350g
Dimensions77(W) × 128(H) × 35(D)mm
Video InputHD-SDI (75ohm din1.0/2.3) ×1/HDMI×1
Audio Output3.5φ Stereo pin jack
Internal batteryOperation for about 1 hour
USBMicro USB × 3/USB 2.0 × 1
GNSSGPS Only (WGS84)
Power consumption20W (Typical)
Video input terminalEquipped with BNC (75Ω din1.0/2.3) x 1 and HDMI x 1
Communication terminalEquipped with micro USB2.0 x 3 and USB 2.0* x 1
*Only for WiFi/USB Ethernet adapter
Operation temperature0~40℃ / 20 to 80% RH (No condensation)
External BatteryWeight430g
Dimensions84(W) × 135(H) × 34(D)mm
Capacity56Wh (Operation for about 1 hour)
CommunicationConnectivity5G, LTE, WiFi, Ethernet
Error correctionARQ, packet sorting
ProtocolUDP/IP, TCP/IP (RASCOW2)
Multi link3 lines (up to 4 lines)
Serial communicationExpansion by USB serial cable; Virtual Serial Tunneling
VideoEncoding methodH.265 Main Profile
Supported input formatHDMI: 1080p/25fps, 29.97fps, 30fps, 50fps, 59.94fps, 60fps; 720p/50fps, 59.94fps, 60fps SDI: 1080p/29.97fps, 30fps; 720p/59.94fps, 60fps; 1080i/59.94fps, 60fps
Bit rate100kbps ~ 15mbps
Frame rateMaximum 29.97fps ( when input video is 1080p 59.94/29.97)
Maximum 59.94fps (when input video is 720p 59.94)
VoiceEncoding methodOpus
ChannelStereo
Sampling48KHz
InputEmbedded Audio