Packet processing device and method

A packet processing method for processing packets in which variable length data is split and stored, comprising:

• an analysis step of analyzing a header of an inputted packet, and determines whether data stored in a payload is start data containing start information or other data;
• an extracting step of referring to an analysis result from the analyzing step, and extracting the data from the payload of the packet;
• a step of storing the data extracted in the extracting step to a buffer;
• a control step of controlling a stored position and an accumulated data amount of the data in the buffer;
• and
• an identifying step of generating information for identifying the start data in the buffer, based on the analysis result from the analyzing step and the control from the control step.

A decode processing method for decoding data stored in a buffer by using information for identifying start data containing start information that is included in data stored in the buffer, comprising:

• a reading-out step of reading out data from the buffer with a predetermined timing;
• a separating step of separating the start data contained in the data read out into start information and data based on information for identifying the start data;
• and
• a decoding step of performing a decode process for the data read out based on the start information.

A computer readable program for a computer to execute a packet processing method for processing packets in which variable length data is split and stored,

• wherein the program causes a computer to execute:
• an analysis step of analyzing a header of an inputted packet, and determines whether data stored in a payload is start data containing start information or other data;
• an extracting step of referring to an analysis result from the analyzing step, and extracting the data from the payload of the packet;
• a step of storing the data extracted in the extracting step to a buffer;
• a control step of controlling a stored position and an accumulated data amount of the data in the buffer;
• and
• an identifying step of generating information for identifying the start data in the buffer, based on the analysis result from the analyzing step and the control from the control step.

A computer readable program for a computer to execute a decode processing method for decoding data stored in a buffer by using information for identifying start data containing start information that is included in data stored in the buffer,

• wherein the program causes the computer to execute:
• a reading-out step of reading out data from the buffer with a predetermined timing;
• a separating step of separating the start data contained in the data read out into start information and data based on information for identifying the start data;
• and
• a decoding step of performing a decode process for the data read out based on the start information.

A medium having recorded thereon a computer readable program for a computer to execute a packet processing method for processing packets in which variable length data is split and stored,

• wherein the program recorded in the medium causes the computer to execute:
• an analysis step of analyzing a header of an inputted packet, and determining whether data stored in a payload is start data containing start information or other data;
• an extracting step of referring to an analysis result from the analyzing step, and extracting the data from the payload of the packet;
• a step of storing the data extracted in the extracting step to a buffer;
• a control step of controlling a stored position and an accumulated data amount of the data in the buffer;
• and
• an identifying step of generating information for identifying the start data in the buffer, based on the analysis result from the analyzing step and the control from the control step.

A medium having recorded thereon a computer readable program for a computer, to execute a decode processing method for decoding data stored in a buffer by using information for identifying start data containing start information that is included in data stored in the buffer,

• wherein the program recorded in the medium causes a computer to execute:
• a reading-out step of reading out data from the buffer with a predetermined timing;
• a separating step of separating the start data contained in the data read out into start information and data based on information for identifying the start data;
• and
• a decoding step of performing a decode process for the data read out based on the start information.

An integrated circuit to be incorporated into a device which processes packets in which variable length data is split and stored,

• wherein the device comprises a buffer for storing data, and
• wherein the integrated circuit integrates circuitry functioning as:
• a header analyzing section for analyzing a header of an inputted packet, and determining whether data stored in a payload is start data containing start information or other data;
• a data extracting section for referring to an analysis result from the header analyzing section, and extracting the data from the payload in the packet;
• a buffer for storing the data extracted by the data extracting section;
• a buffer controlling section for controlling a stored position and an accumulated data amount of the data in the buffer;
• and
• a start data identifying section for generating information for identifying the start data in the buffer, based on the analysis result from the header analyzing section and the control by the buffer controlling section.