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Transmission device, transmission method, reception device, and reception method

一种传送装置、接收装置的技术，应用在传输系统、数字传输系统、语音分析等方向，能够解决数据丢失等问题，达到促进同步化的效果

Active Publication Date: 2019-05-21
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this does not respond to data loss, e.g. due to errors on the transmission channel or to pauses and resumes in the middle of the encryption process

Method used

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  • Transmission device, transmission method, reception device, and reception method
  • Transmission device, transmission method, reception device, and reception method
  • Transmission device, transmission method, reception device, and reception method

Examples

Experimental program
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Embodiment Construction

[0052] Hereinafter, modes for carrying out the invention (hereinafter referred to as "embodiments") will be described. It is to be noted that description will be performed in the following order.

[0053] 1. Embodiment

[0054] 2. Variation

[0055]

[0056] [Configuration example of AV system]

[0057] figure 1 A configuration example of the AV system 10 as an embodiment is illustrated. The AV system 10 has a television receiver 100 as a sink device, an audio amplifier 200 as a repeater device, and a Blu-ray Disc (BD) player 300 as a source device. The television broadcast receiving antenna 400 is connected to the television receiver 100 and the BD player 300 . Furthermore, a two-channel or multi-channel speaker system 500 is connected to the audio amplifier 200 .

[0058] The television receiver 100 and the audio amplifier 200 are connected to each other via an HDMI cable 610 . The television receiver 100 includes an HDMI terminal 101 connected to an HDMI receiver (...

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PUM

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Abstract

The present invention makes it possible to easily synchronize transmission-side and reception-side processing. According to the present invention, audio data is sequentially transmitted to a receptionside via prescribed transmission paths for each piece of unit audio data. A counter value and a parity value that has been associated with the counter value are added to the audio data at each of a prescribed number of pieces of unit audio data. The counter value and parity value added at each of the prescribed number of pieces of unit audio data change, for example, in accordance with encryptionstate.

Description

technical field [0001] The present invention relates to a transmitting device, a transmitting method, a receiving device, and a receiving method, and particularly to a transmitting device configured to transmit audio data, for example. Background technique [0002] In general, the IEC 60958 standard has been widely used for digital audio transmission. For example, Patent Document 1 describes the IEC60958 standard. In addition, standards such as High-Definition Multimedia Interface (HDMI) and Display Port (Display port) have been used for digital audio video transmission. According to these standards, the stream according to the IEC 60958 standard is packetized for the transmission of the digital audio part. [0003] For copyright protection, High-bandwidth Digital Content Protection (HDCP) applies to HDMI and DisplayPort. During transmission, audio and video are encrypted together, and in this way, unauthorized copying on the transmission channel is prevented. For this r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/435G10L19/00H04L1/00H04N21/436H04N21/439
CPCH04L1/00G10L19/00H04N21/4104H04N21/4398H04N21/43635H04N21/4367H04N21/615H04N21/4425H04N21/4363H04N21/4382H04N21/4408
Inventor 市村元
Owner SONY CORP
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