Communication apparatus, communication method, communication system, and computer program

A communication device and the technology of the communication department, applied in the direction of transmission system, program/content distribution protection, electrical components, etc., can solve problems such as applications that cannot achieve DTCP compatibility

Inactive Publication Date: 2014-01-22
SONY CORP
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the "discard DTCP commands with a TTL value greater than 3" required in the DTCP specification will not be allowed to execute, and as a result, DTCP-compatible applications will not be implemented

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Communication apparatus, communication method, communication system, and computer program
  • Communication apparatus, communication method, communication system, and computer program
  • Communication apparatus, communication method, communication system, and computer program

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] Certain embodiments of the present disclosure will be described in detail with reference to the accompanying drawings as follows.

[0053] figure 1 An example of the configuration of the communication system 100 to which the embodiment of the present disclosure is applied is illustrated. The communication system 100 shown in the figure includes a DTCP_Sink device 110 that consumes content and a DTCP_Source device 130 that provides content. The DTCP_Sink device 110 and the DTCP_Source device 130 are connected to each other via an IP network using DTCP-IP technology.

[0054] The DTCP_Sink device 110 and the DTCP_Source device 130 each send and receive DTCP commands and responses to DTCP commands encapsulated within IP packets. Figure 13 The IP packet structure for DTCP command transmission is exemplified. Note that fields not directly related to the various embodiments of the present invention are summarized as necessary. The IP header includes a source IP address ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a communication apparatus, a communication method, a communication system and a computer program. The communication apparatus includes: a communication section transmitting and receiving a packet encapsulating a command or a response; a transmitter confirmation section confirming whether a transmitter transmitting a command is located within a scope limited by a time-to-live value without referencing a header of a received packet; and a control section controlling a process requested by the received command or subsequent communication with the transmitter transmitting the command based on a confirmation result by the transmitter confirmation section.

Description

technical field [0001] The present disclosure relates to a communication device, a communication method, a communication system, and a computer program that exchange a decryption key for encrypted content according to a predetermined mutual authentication and key exchange (AKE) algorithm and transmit the encrypted content to prevent unauthorized content distribution. More specifically, the present disclosure relates to a communication device, a communication method, a communication system, and a computer program that avoid unauthorized content distribution within a predetermined IP router hop count (time-to-live (TTL) value). Background technique [0002] Unauthorized manipulation of digitized content, such as copying and tampering, is relatively easy. More specifically, in remote access, a mechanism (ie, copyright protection) that avoids unauthorized use involved in content transmission while licensing personal or home use of the content is necessary. As an industry standa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L29/06G06F21/10
CPCH04L63/061H04L63/08H04L63/0869
Inventor中野雄彦
OwnerSONY CORP