GVIF:Gigabit Video Interface

GVIF technology helps make your car life more enjoyable and convenient!
Bring your living environment into your car!

Opportunities to use digital interface are expanding as in-vehicle video applications become more diverse, with the transition to digital interface accelerating. Sony is deploying its extensive audio-visual industry expertise to in-vehicle applications, and our proprietary GVIF technology will help realize an even wider range of in-vehicle entertainment.

Watch movies using BD, DVD, or digital terrestrial broadcasting (DTB) in the rear seats.
Navigation and safe driving assistance systems are accessible in the front. 
Go shopping on the Internet!
Play games or watch videos!

What is GVIF ?

GVIF is a high speed serial video interface developed by Sony.
It allows high quality digital transmission over a single shielded pair interface between digital data source devices and display.
GVIF can support various types of AV equipment.

Technology

Basic technical explanation of GVIF

Characteristic of the GVIF/GVIF2 Transmission

  • Serial signal transmissions occur, with speeds up to 4.8 Gbps, by using a differential pair of STP cables.
  • Have automatic support of SFTCLK frequencies in accordance with the panel resolution.
    (Frequency Negotiation)
  • Full Duplex
  • Copyright protection technology (HDCP)
  • Voice Transmission
  • Daisy-chain transmissions of multiplexed video sources.

Cross-section photo of HDMI and GVIF

Adaptive Equalizer

Explanation of Adaptive Equalizer

The ideal waveform can be reproduced, regardless of the cable length and attenuation rate, by monitoring the amplitude of the equalized waveform. In addition, attenuated signals can be corrected by passing the signals through an AGC circuit at the receiving end.

Adaptive Equalizer Eye Diagram

Adaptive equalizer eliminates gain adjustments depending on cable length
  Data Rate 4.8Gbps
Cable
Length
2m 10m
Before Equalize

Waveform before cable equalization with cable length of 2m

Waveform before cable equalization with cable length of 10m

After Equalize

Waveform after cable equalization with cable length of 2m

Waveform after cable equalization with cable length of 10m

Frequency Negotiation

Explanation of Frequency Negotiation: The transmitter sends the reference clock based on the request from the receiver.

High Noise Tolerance, Low Noise Radiation

High Noise Tolerance

The GVIF LSI has a circuit configuration that is resistant to clock jitter and power supply noise in consideration of multi-stage use such as repeater connection.

  • FIFO circuit in the clock input stage is for loading externally input video
  • All LSI internal circuits, through which high-speed signals pass, are differential circuits.

Low Noise Radiation

GVIF has achieved test results that satisfy Class 5 grade stipulated by the CISPR 25 Ed. 3.0: 2008 standard "Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of on-board receivers" created by the International Special Committee on Radio Interference (CISPR: Comite International Special des Perturbations Radioelectriques).

Graph of Radiation Noise Level
 Examples of GVIF2 Noise Radiation Data w/STP Cable 4.8Gbps

GVIF Products
Product Name Ser/
Des
Status Spec SFTCLK
Frequency (MHz)
Interface Connection HDCP Back
Channel
Transmission
Voice Transmission Cable Package
CXD4905GG-W Ser Available GVIF 7.6~80 CMOS P to P HDCP1.4 SPI I2S STP LFBGA144
CXD4906GG-W Des 7.6~80 CMOS
CXD4907GG-W Ser 7.6~90 Open LDI
CXD4926GG-W Des 7.6~90 Open LDI
CXD4930GG-W Des ES
Available
GVIF2 20~150 CSI-2/DSI P to P/
Daisy Chain
HDCP2.2 I2C/SPI/
UART
I2S/TDM STP/Coax LFBGA144
CXD4931GG-W Ser 20~100 CMOS
CXD4932GG-W Des 20~100 CMOS
CXD4933GG-W Ser 20~150 Open LDI/
HDMI/
CSI-2/DSI
CXD4934GG-W Des 20~150 Open LDI
(Dual/Single)
CXD4960ER-W Des 20~150 CSI-2 P to P N/A I2C N/A VQFN32
CXD4961ER-W Ser 20~100 CMOS
CXD4962ER-W Des 20~100 CMOS
CXD4963ER-W Ser 20~150 CSI-2

Use Cases

Use Cases

CXD4930GG-W, CXD4931GG-W, CXD4932GG-W, CXD4933GG-W, CXD4934GG-W Product Brief

Features

  • Serial Transmission of 24 bits color picture from VGA to Full HD resolution
  • Support various SoC interface
  •   CMOS, HDMI, Open LDI, CSI-2, DSI for SER
      CMOS, dual-Open LDI, CSI-2, DSI for DES
  • Support daisy chain connection
  • I2S/TDM audio data transmission
  • Bi-directional Aux interface(I2C/SPI/UART)
  • Bi-directional GPIO interface
  • Embedded CRC error detection
  • HDCP2.2 (High-Bandwidth Digital Content Protection 2.2) technology
  • Built-in pre-programmed HDCP2.2 key
  • Support STP or Coax cable/connector
  • Support power over STP or Coax
  • +1.2V/1.8V or 3.3V/3.3V Power Supply
  • Wide operating temperature range of -40 to 105 degC
  • 10mm × 10mm LFBGA144P package

CXD4960ER-W, CXD4961ER-W, CXD4962ER-W, CXD4963ER-W Product Brief

Features

  • Up to 4Mpixel/60fps image sensor resolution
  • Support image format of Raw or YUV
  • Support SoC interface of CMOS and CSI-2
  • SER provides camera clock and synch signal to image sensor
  • DES provides repeater output to remote ECU
  • Bi-directional Aux interface(I2C)
  • Bi-directional GPIO interface
  • Embedded CRC Error Detection
  • Support STP or Coax cable/connector
  • Support power over STP or Coax
  • +1.2V/1.8V or 3.3V/3.3V Power Supply
  • Wide operating temperature range of -40 to 105 degC
  • 5mm x 5mm VQFN32P package

As for GVIF/GVIF2 Standards

GVIF

JEITA Standards (Physical Layer Standards)
JEITA Standards Digital monitor interface GVIF (CP-6101)
JEITA Standards (See the link) :
http://www.jeita.or.jp/english/
* JEITA : Japan Electronics and Information Technology Industries Association

IEC Standards
IEC-62889 Digital video interface – Gigabit video interface for multimedia systems
IEC Standards (See the link) : https://www.document-center.com/standards/show/IEC-62889
* IEC:International Electrotechnical Commission

DCP, LLC (HDCP Specification)
HDCP Specification v1.1 Amendment for HDCP-GVIF
HDCP Specification v2.2 Amendment for GVIF
HDCP-GVIF Standards (See the link) : http://www.digital-cp.com/hdcp-specifications
* DCP, LLC:Digital Content Protection, LLC

GVIF2

DCP, LLC (HDCP Specification)
HDCP Specification v2.2 Amendment for GVIF2
HDCP-GVIF Standards (See the link) : http://www.digital-cp.com/hdcp-specifications


* GVIF is a trademark of Sony Corporation.