GB/T 42209-2022Point to Point (P2P) signal interface for liquid crystal display panels—Transport protocols (English PDF)
液晶显示屏用点对点（P2P）信号接口 传输协议
This is a limited preview
Buy now to download the full PDF (54 pages)
Need quotation for your management?
Get a formal quotation for GB/T 42209-2022 in 30 minutes.
Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 30, 2022
Implementation date
July 1, 2023
Scope
GB/T 42209-2022 is the English-translated version of 液晶显示屏用点对点（P2P）信号接口 传输协议.
GB/T 42209-2022 specifies the transport protocol of the point-to-point (P2P) signal interface used inside liquid crystal display panels.
It defines two schemes, scheme 1 with an 8-bit/10-bit codec and scheme 2 with an 8-bit/9-bit codec, and for each the sender and receiver protocols, the bidirectional command channel, the packets and the display data map of a packet, display system parameter setting, clock calibration, the codec and data scrambling, with normative annexes on the sender and receiver state transitions and informative annexes giving the encoding table and the scrambling polynomials.
Clause 1 applies it to the interface between the timing controller and the source driver chip. Its introduction discloses patents on the coding and scrambling methods, licensable on reasonable and non-discriminatory terms. Issued on 30 December 2022, it has applied since 1 July 2023.
Found what you need?
Document preview — GB/T 42209-2022
National Standard of the People's Republic of China
- ICS
- 31.120
- Classification
- L 47
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms, Definitions, Symbols, Units and Abbreviations
- 3.1 Terms, Definitions, Symbols and Units
- 3.2 Abbreviations
- 4 Transmission Protocol Scheme 1
- 4.1 Overview
- 4.2 Sender protocol
- 4.3 Receiver protocol
- 4.4 Two-way command channel protocol
- 4.5 Packet
- 4.6 Displaying the data map of a packet
- 4.7 Display system parameter setting
- 4.8 Clock Calibration
- 4.9 8-bit/10-bit codec
- 4.10 Data scrambling
- 5 Transmission Protocol Scheme II
- 5.1 Overview
- 5.2 Sender protocol
- 5.3 Receiver protocol
- 5.4 Packets
- 5.5 Displaying the data map of a packet
- 5.6 Display system parameter setting
- 5.7 Clock Calibration
- 5.8 8-bit/9-bit codec
- 5.9 Data Scrambling
- Appendix A (Normative) Transmission Protocol Scheme 1 --- Working State Transition at the Sending End
- Appendix B (Normative) Transmission Protocol Scheme 1---Working State Transition at the Receiver
- Appendix C (informative) Transmission protocol scheme one --- 8-bit/10-bit scrambling polynomial
- Appendix D (Informative) Transmission Protocol Scheme II --- 8-bit/9-bit Encoding Table
- Appendix E (informative) Transmission protocol scheme two --- 8-bit/9-bit scrambling polynomial
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.
Introduction
The issuer of this document draws attention to the following patents related to codec and scrambling when declaring compliance with this document. use. Patent Application Number Patent Name Patent Holder
201810979269.7 Encoding method, device and display device BOE Technology Group Co., Ltd.
201710434609.3 Encoding method and device, decoding method and device, and display device BOE Technology Group Co., Ltd. Beijing BOE Display Technology Co., Ltd.
201710434373.3 Drive control method, component and display device BOE Technology Group Co., Ltd. Beijing BOE Display Technology Co., Ltd.
201710433781.7 Drive control method, component and display device BOE Technology Group Co., Ltd. Beijing BOE Display Technology Co., Ltd.
201710433373.1 Data transmission method, component and display device BOE Technology Group Co., Ltd. Beijing BOE Display Technology Co., Ltd.
201710433272.4 Signal transmission method, sending unit, receiving unit and display device BOE Technology Group Co., Ltd. Beijing BOE Display Technology Co., Ltd.
201710434370.X Signal transmission method, sending unit, receiving unit and display device BOE Technology Group Co., Ltd. Beijing BOE Display Technology Co., Ltd.
201810539200.2 Encoding method, equipment and readable storage medium Shenzhen Huaxing Optoelectronics Technology Co., Ltd.
201810450416.1 Coding method, equipment and readable storage medium Shenzhen Huaxing Optoelectronics Technology Co., Ltd.
201810602094.8 Scrambling method, equipment and readable storage medium Shenzhen Huaxing Optoelectronics Technology Co., Ltd.
201810619509.2 Descrambling method, device and readable storage medium Shenzhen Huaxing Optoelectronics Technology Co., Ltd.
201810539654.X Decoding method, device and readable storage medium Shenzhen Huaxing Optoelectronics Technology Co., Ltd.
The issuing authority of this document has no position regarding the veracity, validity and scope of this patent.
The patent holder has committed to the issuing authority of this document that he is willing to cooperate with any applicant on reasonable and non-discriminatory terms and conditions, Negotiate patent licenses. The patent holder's statement is on file with the issuing authority of this document. Relevant information can be found through the following Get in touch.
Patent holders. BOE Technology Group Co., Ltd., Beijing BOE Display Technology Co., Ltd.
1 Scope
This document specifies the transmission protocol of the point-to-point (P2P) signal interface for liquid crystal display, including the sending end protocol, receiving end protocol, data Data packets, clock calibration, etc. Two transport protocol schemes are specified in this document.
---Transmission protocol scheme 1.8-bit/10-bit codec transmission protocol;
---Transmission protocol scheme two. 8-bit/9-bit codec transmission protocol.
This document is applicable to the point-to-point signal communication interface between the timing controller for liquid crystal display and the source driver chip.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 18910.11-2012 Liquid crystal display devices Part 1-1.Terms and symbols
3 Terms, Definitions, Symbols, Units and Abbreviations
3.1 Terms, Definitions, Symbols and Units
The terms, definitions, symbols and units defined in GB/T 18910.11-2012 apply to this document.
3.2 Abbreviations
The following abbreviations apply to this document. ALN. alignment or alignment (Alignment)
BC. Broadcast
BPC. BitnumberPerColor
CE. End command (CommandEnd)
CMD. command (Command)
CS. Header command (CommandStart)
CT. Clock calibration signal (ClockTraining)
FBD. Return data (FeedbackData)
IA. ID assignment (IDAssignment)
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 54 pages — is available in the English PDF.
Referenced standards
Similar standards
How to Download GB/T 42209-2022
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB/T 10003-2026 — Biaxially oriented polypropylene (BOPP) film
GB/T 10004-2026 — Plastic/Plastic laminated films and pouches for packaging
GB/T 10007-2026 — Rigid cellular plastics - Determination of shear properties
Secure payment via Stripe
Payments accepted
GB/T 42209-2022
$665.00