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US 7,397,920 B2Granted
Information processing device and method, and recording medium
AssigneeSony Corporation
InventorIchiro Hamada
Life of this patent
Estimating the term…
Abstract
Data input to an encrypting/decoding portion are input to an erroneous decoding detector. The erroneous decoding detector judges whether the data input are correctly decoded or not. For example, if it is judged that audio data input are not correctly decoded, the erroneous decoding detector does not output the audio data or outputs data indicating silence, thereby executing mute processing.
Claims9
An information processing device, comprising:
- an input/output device operable to send and receive data by using a standard digital interface format;
- an encoder operable to encode the data to be sent;
- a decoder operable to decode the received data when the received data is encrypted data;
- a judging unit operable to judge:
- (i) whether said received data conforms to a IEC60958 standard so as to be audio data, (ii) whether said received data is the encrypted data, and (iii) when said received data is the encrypted data, whether said encrypted data has been properly decoded;
- and
- means operable to execute mute processing to prevent sound emission when said judging unit determines if any one of the following two items exists:
- (i) said received data does not conform to the IEC60958 standard, and (ii) said encrypted data has not been properly decoded when said received data is judged to be the encrypted data, and to not execute mute processing when said judging unit does not determine if any one of the two items exists,
- in which said received data has a number of isochronous packets;
- in which said judging unit is operable to judge whether said received data conforms to the IEC60958 standard so as to be audio data by utilizing data in a format ID portion of a CIP header portion of an isochronous packet of said received data, and
- in which said judging unit is operable to judge whether said received data is the encrypted data by utilizing data in a synchronization portion of the isochronous packet header of the isochronous packet of said received data.
8 more elements
An information processing method, comprising the steps of:
- sending and receiving data by using a standard digital interface format;
- encoding the data to be sent;
- decoding the received data when the received data is encrypted data;
- judging whether said received data conforms to a IEC60958 standard so as to be audio data, whether said received data is the encrypted data, and when said received data is the encrypted data, whether the encrypted data has been properly decoded;
- and
- executing mute processing to prevent sound emission when the judging step determines if any one of the following two items exists:
- (i) said received data does not conform to the IEC60958 standard, and (ii) the encrypted data has not been properly decoded when said received data is judged to be the encrypted data, and not executing mute processing when the judging step does not determine if any one of the two items exists,
- in which said received data has a number of isochronous packets;
- in which said judging whether said received data conforms to the IEC60958 standard so as to be audio data involves utilizing data in a format ID portion of a CIP header portion of an isochronous packet of said received data, and
- in which said judging whether said received data is the encrypted data involves utilizing data in a synchronization portion of the isochronous packet header of the isochronous packet of said received data.
7 more elements
A recording medium recorded with a computer-readable program for information processing, the program comprising the steps of:
- sending and receiving data by using a standard digital interface format;
- encoding the data to be sent;
- decoding the received data when the received data is encrypted data;
- judging whether said received data conforms to a IEC60958 standard so as to be audio data, whether said received data is the encrypted data, and when said received data is the encrypted data, whether the encrypted data has been properly decoded;
- and
- executing mute processing to prevent sound emission when the judging step determines if any one of the following two items exists:
- (i) said received data does not conform to the IEC60958 standard, and (ii) the encrypted data has not been properly decoded when said received data is judged to be the encrypted data, and not executing mute processing when the judging step does not determine if any one of the two items exists,
- in which said received data has a number of isochronous packets;
- in which said judging whether said received data conforms to the IEC60958 standard so as to be audio data involves utilizing data in a format ID portion of a CIP header portion of an isochronous packet of said received data, and
- in which said judging whether said received data is the encrypted data involves utilizing data in a synchronization portion of the isochronous packet header of the isochronous packet of said received data.
7 more elements
Dependencies are inferred from the claim text.