Industry News

8K New Technology: 8K HDMI2.1 Features and Scheme Sharing

2021-03-03

8K New Technology: 8K HDMI2.1

Features and Scheme Sharing

 

    With the adoption of 8K+5G technology for live broadcast at the two sessions and the successive introduction of 8K TVs by major domestic and foreign TV manufacturers, I believe that the word 8K is no longer unfamiliar to everyone. So what is 8K, what are the functions of 8K, and what technology is used to achieve it. Let’s talk briefly with you today.

    The most popular 8K digital video interface is HDMI2.1. The following is a brief description of the format, transmission mode, DSC function and HDR function supported by HDMI2.1.

 

1. Support higher resolution and frame rate

§ 

TMDS Mode

§ 

         6 Gbps x 3 lanes = 18 Gbps

§ 

Fixed Rate Link (FRL) Mode

§ 

         12 Gbps x 4 lanes = 48 Gbps

 

 2. Support FLR transmission mode

§ 

HDMI2.1 defines a new transmission mode FRL (Fixed Rate link), which defines the original TMDS CLOCK CHANNEL as a Lane of FRL, that is, the clock channel is also changed to transmit data. Through FRL mode, the highest transmission bit rate is 4x12Gbps=48Gbps

§ 

 

§ 

FRL connection process

 

Rate per

Lane

Lane

number

Link

width

FRL

Rate

Format

3Gbps

3

9Gbps

1

4k/24    

8bit444

3Gbps

3

18Gbps

2

4K/60    

8bit444

6Gbps

4

24Gbps

3

5K/60    

8bit444

8Gbps

4

32Gbps

4

8K/60    

8bit420

10Gbps

4

40Gbps

5

10K/60 

8bit420

4K/120 10bit

12Gbps

4

48Gbps

6

10K/60 

8bit420

4K/120    

12bit

 

3. DSC1.2

§ 

HDMI2.1 adopts VESA DSC VISION1.2a standard. Judging from the content of the HDMI2.1 standard, DSC seems to divide the original picture into several parts (Slice), and only compress it in the horizontal direction. The original Hactive+Hblank is compressed to Hcactive+Hcblank, as shown in the figure below, the subsequent processing It is similar to transmitting and uncompressed signals . Sink must indicate in the EDID that it supports DSC (DSC-1p2=1) and the supported format, so that Source can send compressed signals. Source transmits PPS (picture parameter set) to sink through CVTEM (compressed video transport extended metadata) packet.

§ 

 

Compressed signals can only be transmitted through FRL

 

 

4. Static HDR and dynamic HDR

§ 

PACKET in HDMI1.4 (HDR-Metadate is not supported)

§ 

Added color PACKET (0F87) in 4K HDMI2.0 to support static HDR

§ 

HDMI2.1 newly added PACKET ((0X7F) EMP supports dynamic HDR

§ 

 

§ 

Characteristics of HDMI transmission

§ 

The sink must indicate which kind of HDR and which kind of Metadata is supported in the HDR Metadata Block of HDR of EDID (can support static or several dynamic HDR at the same time)

§ 

For static Metadata, the Source end is transmitted through 0X87 infoframepacket. Both HDMI2.1 and CTA-861-G stipulate that every two fields (Field) must be transmitted once

§ 

For dynamic Metadata, the Source end is transmitted through 0X7F EMP (Extended Metadata packet); because it is closely related to the image content , EMP is transmitted in the blanking period of the previous frame for the next frame to use

§ 

The transmitted Metadata Packet contains the infoframe typecode, and the sink knows what kind of Metadata it is and corresponds to the corresponding HDR

§ 

 

 

5. Test plan of Kedian HDMI 2.1

 

VG879 host + MD module supports 8K HDMI2.1

 

Features of MD module:

Support FRL (Max.48Gbps) and TMDS (Max. 18Gbps); support uncompressed 8K/60p YCbCr4:2:0 and 4K/120p YCbCr4:4:4 signals; HDCP1.4/2.3; support DSC1.2 function

Connector

HDMI x 1

Data Rate

Max. 48Gbps (FRL), Max 18Gbps (TMDS)

Video Timing Standard

RGB, YCbCr 4:4:4, 4:2:2, 4:2:0

Color Depth

8, 10, 12, bit

HDCP

Ver. 2.3 / 1.4

Audio Format

HDMI: L-PCM, AAC, AC3
Option: VT-8500-0006 (Dolby Digital Plus, DTS HD, etc.)
COAX OUT: for ARC and eARC

HDR function

HDR10 and HLG test gallery

 

HDR10+ test

 

Dolby Vision

 


Features and Scheme Sharing

 

    With the adoption of 8K+5G technology for live broadcast at the two sessions and the successive introduction of 8K TVs by major domestic and foreign TV manufacturers, I believe that the word 8K is no longer unfamiliar to everyone. So what is 8K, what are the functions of 8K, and what technology is used to achieve it. Let’s talk briefly with you today.

    The most popular 8K digital video interface is HDMI2.1. The following is a brief description of the format, transmission mode, DSC function and HDR function supported by HDMI2.1.

 

1. Support higher resolution and frame rate

§ 

TMDS Mode

§ 

         6 Gbps x 3 lanes = 18 Gbps

§ 

Fixed Rate Link (FRL) Mode

§ 

         12 Gbps x 4 lanes = 48 Gbps

 

 

2. Support FLR transmission mode

§ 

8K HDMI2.1 defines a new transmission mode FRL (Fixed Rate link), which defines the original TMDS CLOCK CHANNEL as a Lane of FRL, that is, the clock channel is also changed to transmit data. Through FRL mode, the highest transmission bit rate is 4x12Gbps=48Gbps

§ 

 

§ 

FRL connection process


 

Rate per 

Lane 

Lane 

number 

Link 

width 

FRL 

Rate 

Format 

3Gbps 

3 

9Gbps 

1 

4k/24     

8bit444 

3Gbps 

3 

18Gbps 

2 

4K/60     

8bit444 

6Gbps 

4 

24Gbps 

3 

5K/60     

8bit444 

8Gbps 

4 

32Gbps 

4 

8K/60     

8bit420 

10Gbps 

4 

40Gbps 

5 

10K/60  

8bit420 

4K/120 10bit 

12Gbps 

4 

48Gbps 

6 

10K/60  

8bit420 

4K/120     

12bit 

 

3. DSC1.2

§ 

8K HDMI2.1 adopts VESA DSC VISION1.2a standard. Judging from the content of the HDMI2.1 standard, DSC seems to divide the original picture into several parts (Slice), and only compress it in the horizontal direction. The original Hactive+Hblank is compressed to Hcactive+Hcblank, as shown in the figure below, the subsequent processing It is similar to transmitting and uncompressed signals . Sink must indicate in the EDID that it supports DSC (DSC-1p2=1) and the supported format, so that Source can send compressed signals. Source transmits PPS (picture parameter set) to sink through CVTEM (compressed video transport extended metadata) packet.

§ 

 

Compressed signals can only be transmitted through FRL

 

 

4. Static HDR and dynamic HDR

§ 

PACKET in HDMI1.4 (HDR-Metadate is not supported)

§ 

Added color PACKET (0F87) in HDMI2.0 to support static HDR

§ 

HDMI2.1 newly added PACKET ((0X7F) EMP supports dynamic HDR

§ 

 

§ 

Characteristics of HDMI transmission

§ 

The sink must indicate which kind of HDR and which kind of Metadata is supported in the HDR Metadata Block of HDR of EDID (can support static or several dynamic HDR at the same time)

§ 

For static Metadata, the Source end is transmitted through 0X87 infoframepacket. Both HDMI2.1 and CTA-861-G stipulate that every two fields (Field) must be transmitted once

§ 

For dynamic Metadata, the Source end is transmitted through 0X7F EMP (Extended Metadata packet); because it is closely related to the image content , EMP is transmitted in the blanking period of the previous frame for the next frame to use

§ 

The transmitted Metadata Packet contains the infoframe typecode, and the sink knows what kind of Metadata it is and corresponds to the corresponding HDR

§ 

 

 

5. Test plan of 8K HDMI 2.1 

 

VG879 host + MD module supports HDMI2.1

 

Features of MD module:

Support FRL (Max.48Gbps) and TMDS (Max. 18Gbps); support uncompressed 8K/60p YCbCr4:2:0 and 4K/120p YCbCr4:4:4 signals; HDCP1.4/2.3; support DSC1.2 function

Connector 

HDMI x 1 

Data Rate 

Max. 48Gbps (FRL), Max 18Gbps (TMDS) 

Video Timing Standard 

RGB, YCbCr 4:4:4, 4:2:2, 4:2:0 

Color Depth 

8, 10, 12, bit 

HDCP 

Ver. 2.3 / 1.4 

Audio Format 

HDMI: L-PCM, AAC, AC3
Option: VT-8500-0006 (Dolby Digital Plus, DTS HD, etc.)
COAX OUT: for ARC and eARC 

HDR function

HDR10 and HLG test gallery 

 

HDR10+ test 

 

Dolby Vision 

 

Features and Scheme Sharing

 

    With the adoption of 8K+5G technology for live broadcast at the two sessions and the successive introduction of 8K TVs by major domestic and foreign TV manufacturers, I believe that the word 8K is no longer unfamiliar to everyone. So what is 8K, what are the functions of 8K, and what technology is used to achieve it. Let’s talk briefly with you today.

    The most popular 8K digital video interface is HDMI2.1. The following is a brief description of the format, transmission mode, DSC function and HDR function supported by HDMI2.1.

 

1. Support higher resolution and frame rate

§

TMDS Mode

§

         6 Gbps x 3 lanes = 18 Gbps

§

Fixed Rate Link (FRL) Mode

§

         12 Gbps x 4 lanes = 48 Gbps

 

 

2. Support FLR transmission mode

§

8K HDMI2.1 defines a new transmission mode FRL (Fixed Rate link), which defines the original TMDS CLOCK CHANNEL as a Lane of FRL, that is, the clock channel is also changed to transmit data. Through FRL mode, the highest transmission bit rate is 4x12Gbps=48Gbps

§

 

§

FRL connection process

 

 

 

Rate per 

Lane 

Lane 

number 

Link 

width 

FRL 

Rate 

Format 

3Gbps 

3 

9Gbps 

1 

4k/24     

8bit444 

3Gbps 

3 

18Gbps 

2 

4K/60     

8bit444 

6Gbps 

4 

24Gbps 

3 

5K/60     

8bit444 

8Gbps 

4 

32Gbps 

4 

8K/60     

8bit420 

10Gbps 

4 

40Gbps 

5 

10K/60  

8bit420 

4K/120 10bit 

12Gbps 

4 

48Gbps 

6 

10K/60  

8bit420 

4K/120     

12bit 

 

3. DSC1.2

§

8K HDMI2.1 adopts VESA DSC VISION1.2a standard. Judging from the content of the HDMI2.1 standard, DSC seems to divide the original picture into several parts (Slice), and only compress it in the horizontal direction. The original Hactive+Hblank is compressed to Hcactive+Hcblank, as shown in the figure below, the subsequent processing It is similar to transmitting and uncompressed signals . Sink must indicate in the EDID that it supports DSC (DSC-1p2=1) and the supported format, so that Source can send compressed signals. Source transmits PPS (picture parameter set) to sink through CVTEM (compressed video transport extended metadata) packet.

§

 

Compressed signals can only be transmitted through FRL

 

 

4. Static HDR and dynamic HDR

§

PACKET in HDMI1.4 (HDR-Metadate is not supported)

§

Added color PACKET (0F87) in HDMI2.0 to support static HDR

§

HDMI2.1 newly added PACKET ((0X7F) EMP supports dynamic HDR

§

 

§

Characteristics of HDMI transmission

§

The sink must indicate which kind of HDR and which kind of Metadata is supported in the HDR Metadata Block of HDR of EDID (can support static or several dynamic HDR at the same time)

§

For static Metadata, the Source end is transmitted through 0X87 infoframepacket. Both HDMI2.1 and CTA-861-G stipulate that every two fields (Field) must be transmitted once

§

For dynamic Metadata, the Source end is transmitted through 0X7F EMP (Extended Metadata packet); because it is closely related to the image content , EMP is transmitted in the blanking period of the previous frame for the next frame to use

§

The transmitted Metadata Packet contains the infoframe typecode, and the sink knows what kind of Metadata it is and corresponds to the corresponding HDR

§

 

 

5. Test plan of 8K HDMI 2.1 

 

VG879 host + MD module supports HDMI2.1

 

Features of MD module:

Support FRL (Max.48Gbps) and TMDS (Max. 18Gbps); support uncompressed 8K/60p YCbCr4:2:0 and 4K/120p YCbCr4:4:4 signals; HDCP1.4/2.3; support DSC1.2 function

Connector 

HDMI x 1 

Data Rate 

Max. 48Gbps (FRL), Max 18Gbps (TMDS) 

Video Timing Standard 

RGB, YCbCr 4:4:4, 4:2:2, 4:2:0 

Color Depth 

8, 10, 12, bit 

HDCP 

Ver. 2.3 / 1.4 

Audio Format 

HDMI: L-PCM, AAC, AC3
Option: VT-8500-0006 (Dolby Digital Plus, DTS HD, etc.)
COAX OUT: for ARC and eARC 

HDR function

HDR10 and HLG test gallery 

 

HDR10+ test 

 

Dolby Vision 

 

8K New Technology: 8K HDMI2.1 Features and Scheme Sharing

 

    With the adoption of 8K+5G technology for live broadcast at the two sessions and the successive introduction of 8K TVs by major domestic and foreign TV manufacturers, I believe that the word 8K is no longer unfamiliar to everyone. So what is 8K, what are the functions of 8K, and what technology is used to achieve it. Let’s talk briefly with you today.

    The most popular 8K digital video interface is 8K HDMI2.1. The following is a brief description of the format, transmission mode, DSC function and HDR function supported by 8K HDMI2.1.

 

1. Support higher resolution and frame rate

§ 

TMDS Mode

§ 

         6 Gbps x 3 lanes = 18 Gbps

§ 

Fixed Rate Link (FRL) Mode

§ 

         12 Gbps x 4 lanes = 48 Gbps

 

 

2. Support FLR transmission mode

§ 

8K HDMI2.1 defines a new transmission mode FRL (Fixed Rate link), which defines the original TMDS CLOCK CHANNEL as a Lane of FRL, that is, the clock channel is also changed to transmit data. Through FRL mode, the highest transmission bit rate is 4x12Gbps=48Gbps

§ 

 

§ 

FRL connection process

 

Rate per

Lane

Lane

number

Link

width

FRL

Rate

Format

3Gbps

3

9Gbps

1

4k/24    

8bit444

3Gbps

3

18Gbps

2

4K/60    

8bit444

6Gbps

4

24Gbps

3

5K/60    

8bit444

8Gbps

4

32Gbps

4

8K/60    

8bit420

10Gbps

4

40Gbps

5

10K/60 

8bit420

4K/120 10bit

12Gbps

4

48Gbps

6

10K/60 

8bit420

4K/120    

12bit

 

3. DSC1.2

§ 

8K HDMI2.1 adopts VESA DSC VISION1.2a standard. Judging from the content of the 8K HDMI2.1 standard, DSC seems to divide the original picture into several parts (Slice), and only compress it in the horizontal direction. The original Hactive+Hblank is compressed to Hcactive+Hcblank, as shown in the figure below, the subsequent processing It is similar to transmitting and uncompressed signals . Sink must indicate in the EDID that it supports DSC (DSC-1p2=1) and the supported format, so that Source can send compressed signals. Source transmits PPS (picture parameter set) to sink through CVTEM (compressed video transport extended metadata) packet.

§ 

 

Compressed signals can only be transmitted through FRL

 

 

4. Static HDR and dynamic HDR

§ 

PACKET in 1K HDMI1.4 (HDR-Metadate is not supported)

§ 

Added color PACKET (0F87) in 4K HDMI2.0 to support static HDR

§ 

8K HDMI2.1 newly added PACKET ((0X7F) EMP supports dynamic HDR

§ 

 

§ 

Characteristics of HDMI transmission

§ 

The sink must indicate which kind of HDR and which kind of Metadata is supported in the HDR Metadata Block of HDR of EDID (can support static or several dynamic HDR at the same time)

§ 

For static Metadata, the Source end is transmitted through 0X87 infoframepacket. Both 8K HDMI2.1 and CTA-861-G stipulate that every two fields (Field) must be transmitted once

§ 

For dynamic Metadata, the Source end is transmitted through 0X7F EMP (Extended Metadata packet); because it is closely related to the image content , EMP is transmitted in the blanking period of the previous frame for the next frame to use

§ 

The transmitted Metadata Packet contains the infoframe typecode, and the sink knows what kind of Metadata it is and corresponds to the corresponding HDR

§ 

 

 

5. Test plan of 8K HDMI 2.1

 

VG879 host + MD module supports 8K HDMI2.1

 

Features of MD module:

Support FRL (Max.48Gbps) and TMDS (Max. 18Gbps); support uncompressed 8K/60p YCbCr4:2:0 and 4K/120p YCbCr4:4:4 signals; HDCP1.4/2.3; support DSC1.2 function

Connector

HDMI x 1

Data Rate

Max. 48Gbps (FRL), Max 18Gbps (TMDS)

Video Timing Standard

RGB, YCbCr 4:4:4, 4:2:2, 4:2:0

Color Depth

8, 10, 12, bit

HDCP

Ver. 2.3 / 1.4

Audio Format

HDMI: L-PCM, AAC, AC3
Option: VT-8500-0006 (Dolby Digital Plus, DTS HD, etc.)
COAX OUT: for ARC and eARC

HDR function

HDR10 and HLG test gallery

 

HDR10+ test

 

Dolby Vision