KR100679429B1 - Combination i-linkieee1394 and high definition multimedia interface - Google Patents

Abstract

Disclosed is an iLink high definition multimedia interface. In order to solve the above problems, the present invention provides a high-definition multimedia interface for iLink by combining HDMI and IEEE1394 (I-Link) interface to transmit and receive data signals of SACD / DVD-Audio through HDMI. The purpose is. According to the present invention for such a purpose, the i-link combined high-definition multimedia interface includes an i-link (IE-Link, IEEE1394) communication standard and a high-definition multimedia interface (HDMI) communication standard.

Description

I-LINK combined high-definition multimedia interface {COMBINATION I-LINK (IEEE1394) AND HIGH DEFINITION MULTIMEDIA INTERFACE}

1 is a block diagram illustrating an audio / video system connected through an i-link high definition multimedia interface according to an embodiment of the present invention.

FIG. 2 is a flow chart showing a data processing method in the audio / video system shown in FIG.

* Description of the symbols for the main parts of the drawings *

100: source device (DVD player or set top box)

102: output device (AV receiver or digital television)

104: decoder

106: transmitter

108: CPU

109: receiver

110: audio DSP

112: DAC

114: video processor

116: I2S DAC

118: EEPROM

120: high-definition multimedia interface for I-Link (IE-13, IEEE1394)

The present invention relates to a high-definition multimedia interface (HDMI) for I-Link (I-Link, IEEE1394), in particular a general digital audio / video signal generated from a general CD or DVD and a high-quality digital audio / generated from a DVD-Audio or SACD The present invention relates to a communication interface for reproducing and processing all video signals.

HDMI (High Definition Multimedia Interface) is a format that integrates video and audio signals into one digital interface, and is used in A / V devices such as DVD players, HDTVs, and set-top boxes. HDCP (High Bandwidth Digital Content Protection) copy protection is adopted as the basis of HDMI, and DVI is a core technology, and HDCP is a baseband copyright protection technology established by Intel and requires mutual authentication between devices like DTCP. HDMI supports standard, extended or HD video, as well as standard to multichannel audio signals, and one terminal can transmit uncompressed digital video signals up to 5 gigabytes per second from a source device to a display device.

However, it is not possible to transmit the playback data of SACD and DVD-Audio, which are used in recent high-end equipment, via HDMI. In other words, in order to transmit data signals reproduced from SACD, it is necessary to support Sony / Philips Digital Interface (SPDIF) format. Since HDMI does not support this SPDIF format, it is impossible to transmit data signals of SACD through HDMI. In the case of an audio signal having a sampling frequency of 96 kHz or higher among data signals of DVD-Audio, 5.1 channel information cannot be transmitted.

In order to solve the above problems, the present invention provides a high-definition multimedia interface for iLink by combining HDMI and IEEE1394 (I-Link) interface to transmit and receive data signals of SACD / DVD-Audio through HDMI. The purpose is.

According to the present invention for this purpose, the i-link combined high-definition multimedia interface, Ports provided in each of the source device and the output device; A cable for connecting between the ports; A pin terminal provided in each of the port and the cable so as to include both pins for I-Link (IEEE 1394) and pins for high definition multimedia interface (HDMI); The I-Link (I-Link, IEEE1394) communication standard and the High Definition Multimedia Interface (HDMI) communication standard consist of one communication standard.

In addition, the iLink communication standard enables the transmission of digital content in the Sony / Phillips Digital Interface (SPDIF) format.

In addition, the iLink communication standard enables the transmission of 5.1-channel audio signals with sampling frequencies above 96kHz.

In addition, the iLink communication standard enables the transmission of SACD or DVD-Audio compatible digital contents.

Referring to Figures 1 and 2 preferred embodiments of the present invention made as described above are as follows. 1 is a block diagram illustrating an audio / video system connected through an i-link high definition multimedia interface according to an embodiment of the present invention. As shown in FIG. 1, the i-link high definition multimedia interface 120 according to an embodiment of the present invention is for data signal transmission from the source device 100 to the output device 102. The IEEE 1394 dual use HDMI communication system according to an embodiment of the present invention can be implemented by providing a port in each of the source device 100 and the output device 102 and providing a cable to connect the ports. It is preferable that the pins of the port and the pin terminals of the cable are all 23, 19 assigned to HDMI (corresponding to HDMI A type), and 4 assigned to IEEE1394.

The source device 100 described above may be a DVD player or a set top box, for example, and the output device 102 may be an AV receiver or a digital television.

The source device 100 includes a decoder 104, a transmitter 106, a CPU 108, and the like. The decoder 104 receives audio / video signals generated from a DVD drive or an STB NIM (Set Top Box Network Interface Module). It receives the input and decodes it. The signal decoded by the decoder 104 includes a data signal of SACD / DVD-Audio. The transmitter 106 transmits the signal decoded by the decoder 104 to the output device 102. In the source device 100, the CPU 108 controls the overall operation of the source device 100 as a central processing unit. The data signal transmitted through the transmitter 106 of the source device 100 is received by the receiver 109 of the output device 102 through the I-link high definition multimedia interface 120. Since the i-link combined high-definition multimedia interface 120 satisfies the IEEE1394 standard, the i-link high definition multimedia interface 120 may transmit data signals of SACD / DVD-Audio.

The source device 102 includes a receiver 109, an audio digital signal processor 110, a digital-analog converter 112, a video processor 114, an I2S digital-analog converter 116, an EEPROM 118, and the like. It includes. The audio digital signal processor (110) and the digital-analog converter 112 convert the audio signal among the data signals received through the receiver 109 so that the audio signal can be output through the speaker, and the video processor 114 The video signal is converted to be output to a display device (when the output device is a video device such as a digital television), and the I2S DAC 116 converts a stereo audio signal (digital format) among the data signals received by the receiver 109. It converts it into an analog signal and outputs it through at least two speakers to realize stereo sound.

FIG. 2 is a flowchart illustrating a data processing method in the audio / video system shown in FIG. 1. As shown in FIG. 2, when an audio / video signal is input to the decoder 104 of the source device 102 (202), it is checked whether the input signal corresponds to SACD or DVD-Audio (204).

If the input signal corresponds to SACD or DVD-Audio (YES in 204), decode SACD or DVD-Audio data (206), and if the input signal does not correspond to SACD or DVD-Audio, (No at 204) Decode general digital content data (e.g., data corresponding to a general CD or DVD) (208).

The decoded audio / video signal is transmitted from the source device 100 to the output device 102 through the i-link high-definition multimedia interface 120 according to the present invention (210), and the receiving unit of the output device 102 ( 109 receives this audio / video signal and provides it to an audio DSP 110, video processor 114, I2S digital-to-analog converter 116, and the like (212).

The audio / video signal thus provided is output through the corresponding output device (e.g., speaker or display device), resulting in final playback (214). That is, the audio signal provided to the audio DSP 112 is converted into an analog signal in the digital-to-analog converter 112 and then output through the speaker, and the video signal provided to the video processor 114 is output through the display device, and I2S. The audio signal provided to the digital-analog converter 116 is output through two or more speakers to realize stereo sound.

Accordingly, the present invention provides a high-definition multimedia interface for the iLink by combining the HDMI and IEEE1394 (I-Link) interface to solve the above-mentioned problem, so that the data signal of SACD / DVD-Audio can be transmitted and received via HDMI. do.

Claims (4)

In the communication interface for transmitting digital content, Ports provided in each of the source device and the output device; A cable for connecting between said ports; A pin terminal provided in each of the port and the cable so as to include both pins for I-Link (IEEE 1394) and pins for high definition multimedia interface (HDMI); High-Definition Multimedia Interface (HDMI) for both I-Link and IEEE1394, in which the I-Link and IEEE1394 communication standards and the High-Definition Multimedia Interface (HDMI) communication standards constitute one communication standard. The method of claim 1, An iLink high-definition multimedia interface capable of transmitting digital content in Sony / Phillips Digital Interface (SPDIF) format through the iLink communication standard. The method of claim 1, ILink high-definition multimedia interface capable of transmitting 5.1-channel audio signal having a sampling frequency of 96kHz or more through the iLink communication standard. The method of claim 1, An iLink-compatible high-definition multimedia interface capable of transmitting digital contents compatible with SACD or DVD-Audio through the iLink communication standard.

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