KR20150018157A - Error correction method for hdmi link system - Google Patents

Error correction method for hdmi link system Download PDF

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Publication number
KR20150018157A
KR20150018157A KR1020130094732A KR20130094732A KR20150018157A KR 20150018157 A KR20150018157 A KR 20150018157A KR 1020130094732 A KR1020130094732 A KR 1020130094732A KR 20130094732 A KR20130094732 A KR 20130094732A KR 20150018157 A KR20150018157 A KR 20150018157A
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KR
South Korea
Prior art keywords
error
link system
data
correcting
data transmission
Prior art date
Application number
KR1020130094732A
Other languages
Korean (ko)
Inventor
이창윤
Original Assignee
주식회사 넥시아 디바이스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 주식회사 넥시아 디바이스 filed Critical 주식회사 넥시아 디바이스
Priority to KR1020130094732A priority Critical patent/KR20150018157A/en
Publication of KR20150018157A publication Critical patent/KR20150018157A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • H04N21/43635—HDMI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/4425—Monitoring of client processing errors or hardware failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
    • H04N7/035—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal
    • H04N7/0357—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal for error detection or correction

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

The present invention relates to an error correcting method of an HDIM link system capable of recovering error data that may occur in a data transmission process of an HDMI link system.
A method for correcting an error occurring in the transmission and reception of data in an HDMI link system, the method comprising: detecting a time interval in a data transmission / reception period of the HDMI link system that has no substantial data transmission; ; A second step of inserting a preamble code for informing whether or not the error is corrected; A third step of inserting positional information of an error code and related data for correcting the generated error; And a fourth step of correcting the generated error based on the information obtained through the second step and the third step.

Description

Technical Field [0001] The present invention relates to an error correction method for an HDMI link system,

The present invention relates to an error correction method of an H.264 / AVC link system, and more particularly, to an H.264 / AVC system capable of recovering error data using a section without actual data transmission in a data transmission process of an HDMI Link system And an error correction method.

The HDMI (High Definition Multimedia Interface) is a high-definition multimedia interface which is one of the non-compression type digital video / audio interface standards. It is a multimedia interface for receiving from a multimedia source such as a transmitting device supporting HDMI, such as a smart phone, a smart pad, For example, AV devices, monitors, digital televisions, and the like, to transmit and receive video and control signals.

Even though HDMI has the same terminal shape, the version may be different depending on the time of release. The HDMI 1.3 specification in June 2006 improved bandwidth (165 megahertz → 340 megahertz) over the existing HDMI 1.2, resulting in a 2.560 x 1,600 resolution screen and can represent a vast 48-bit color than the existing 24-bit color.

In the conventional HDMI link system, there is no function that can correct errors that occur when an error occurs in at least one of these signals when transmitting and receiving video and control signals.

Accordingly, in a particularly poor channel transmission environment, there is a problem that a malfunction of the HDMI link system occurs or an error occurs in the received signal, and the desired data can not be normally transmitted / received from the transmitting apparatus to the receiving apparatus.

It is an object of the present invention to provide an error correction method of an H.264 / AVC system capable of recovering error data that may occur in a data transmission process of an HDMI link system will be.

According to an aspect of the present invention, there is provided a method of detecting a time slot in a data transmission / reception period of an HDMI link system, A second step of inserting a preamble code for informing whether or not the error is corrected; A third step of inserting positional information of an error code and related data for correcting the generated error; And a fourth step of correcting the generated error based on the information obtained through the second step and the third step.

According to the error correcting method of the H.264 / AVC link system according to the present invention, the error signal and data can be corrected in the receiving apparatus in the HDMI link system, and even in a poor channel transmission environment, More restoration is possible, and the desired data can be normally transmitted and received and can be smoothly appreciated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an H.264 / AVC link system according to the present invention; FIG.
2 is a flowchart of an error correcting method of the H.264 link system according to the present invention.

In the following, preferred embodiments, advantages and features of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of an H.264 / AVC link system according to the present invention.

Referring to FIG. 1, the H.3DM link system according to the present invention includes a transmitting apparatus 10, a receiving apparatus 20, and a communication cable 30.

More specifically, the transmitting apparatus 10 includes a processor 11 and a transmitting port 13, and may further include input means such as a touch key board.

The processor 11 of the transmitting apparatus 10 may preferably be an MCU (Micro Controller Unit).

The transmission apparatus 10 inserts an error correction code in a time period during which actual data is not transmitted in the transmission interval of each channel data and sends the error correction code to the reception apparatus 20 so that the reception apparatus 20 recognizes the error occurrence, And to correct the error signal and data.

According to a preferred embodiment, the transmitting apparatus 10 is configured to insert a preamble code indicating whether or not an error correction code is inserted before sending the error correction code to the receiving apparatus 20.

When inserting the error correction code, specifically, it is configured to insert the normal data and the location information of the error code related thereto in order to correct the error.

The receiving apparatus 20 includes a processor 21 and a receiving port 23, and may further include a display unit such as an LCD, a PDP, and an LED.

Meanwhile, the transmitting apparatus 10 may be a mobile communication terminal such as a smart phone or a smart pad, and the receiving apparatus 20 may be a large display apparatus such as a digital flat panel TV including an LCD.

The transmitting apparatus 10 and the receiving apparatus 20 are connected through a communication cable 30 and the communication cable 30 may be constituted by a communication line including a control bus CBUS.

The receiving apparatus 20 is configured to receive preamble code information, corresponding data related to error correction, and position information of the generated error code from the transmitting apparatus 10 and correct the error based on the position information .

Hereinafter, a method of correcting an error in the HDIM link system through each of the above-described configurations of the present invention will be described.

2 is a flowchart of an error correction method of the H.264 / AVC system according to the present invention.

Referring to FIG. 2, the error correction method of the H.264 / AVCHD link system according to the present invention includes a data transmission interval detection step S10, a preamble code insertion step S20, error correction information insertion step S30, And an error correction execution step (S40).

The data transmission interval detection step S10 is a step of searching for a time interval in which data transmission is not actually occurring in a transmission interval of each channel data between the transmission device 10 and the reception device 20 and detecting the time interval.

The preamble code inserting step S20 is a step of inserting a preamble code into the receiving apparatus 20 by using the data transmission time interval detected in step S10 when the error occurs in the data transmission / reception process between the transmitting apparatus 10 and the receiving apparatus 20 And inserts a preamble code in which information necessary for correcting the error is recorded.

The error correction information inserting step S30 inserts the error code position information and the generated error correction related data to the receiving apparatus 20 by inserting bit information related to error correction so that the receiving apparatus 20 can acquire the corresponding error correction related data .

Here, the generated error correction-related data includes data for correcting an error and recovering a normal signal.

Meanwhile, the error correcting code inserting step S30 may be configured to be performed in the data non-transmission time interval detected in step '10' as in step S20.

The error correction execution step S40 is a step in which the receiving apparatus 20 corrects the error based on the information obtained through the steps '20' and '30'.

According to the above-described method, error signals and data can be corrected in the receiving apparatus in the HDMI link system, and error in the receiving signal can be more restored than in the conventional HDMI link system even in a poor channel transmission environment.

While the preferred embodiments of the present invention have been described and illustrated above using specific terms, such terms are used only for the purpose of clarifying the invention, and it is to be understood that the embodiment It will be obvious that various changes and modifications can be made without departing from the spirit and scope of the invention. Such modified embodiments should not be understood individually from the spirit and scope of the present invention, but should be regarded as being within the scope of the claims of the present invention.

10: transmitting apparatus 11: transmitting apparatus processor
13: transmitting port 20: receiving device
21: receiving device processor 30: communication cable

Claims (3)

A method for correcting an error occurring in a data transmission / reception process of an HDMI link system,
A first step of detecting a time interval in a data transmission / reception interval of the HDMI link system in which there is no substantial data transmission;
A second step of inserting a preamble code for informing whether or not the error is corrected;
A third step of inserting positional information of an error code and related data for correcting the generated error; And
And a fourth step of correcting the generated error based on the information obtained through the second step and the third step.
The method according to claim 1,
Wherein the second step and the third step are performed in a data transmission time interval detected in the first step.
The method according to claim 1,
Wherein the first step is configured to detect a time interval during which the actual data transmission is not performed in a transmission interval of each channel data of the HDMI link system.
KR1020130094732A 2013-08-09 2013-08-09 Error correction method for hdmi link system KR20150018157A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130094732A KR20150018157A (en) 2013-08-09 2013-08-09 Error correction method for hdmi link system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130094732A KR20150018157A (en) 2013-08-09 2013-08-09 Error correction method for hdmi link system

Publications (1)

Publication Number Publication Date
KR20150018157A true KR20150018157A (en) 2015-02-23

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KR1020130094732A KR20150018157A (en) 2013-08-09 2013-08-09 Error correction method for hdmi link system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11895359B2 (en) 2021-04-13 2024-02-06 Samsung Electronics Co., Ltd. Electronic device and operating method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11895359B2 (en) 2021-04-13 2024-02-06 Samsung Electronics Co., Ltd. Electronic device and operating method thereof

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