Data decoding system and method, transfer device and method, and receiving device and method
AssigneeSony Corporation
InventorsNaofumi Yanagihara, Mari Horiguchi
Life of this patent
Estimating the term…
Abstract
Data that is an MPEG program stream (PS) read out from a disc is supplied to a PS/TS converter via a variable rate control section. The PS/TS converter converts the PS MPEG data into a transport stream (TS) and transmits it to a presentation device via a 1394 transmission/reception section. Data received by a 1394 transmission/reception section of the presentation device is classified by a DEMUX section. An audio decoder and a video decoder decode the TS MPEG data. D/A converters convert resulting digital data into analog signals and output the analog signals.
Claims60
A data decoding system comprising:
- a first device for transferring encoded data via a digital interface configured according to a predetermined format using isochronous and asynchronous transferring packet;
- a second device for receiving the data transferred via the digital interface and for decoding the received data for a given data form, said second device including:
- a variable rate control section for receiving a reproduction signal from the first device and for outputting it with given timing;
- a maximum rate control section for receiving a reproduction signal from the first device and for checking an output rate of the maximum rate control section so that the output rate does not exceed a transfer rate of the digital interface;
- a switch for selectively supplying reproduction data to the variable rate control section or the maximum rate control section in accordance with a playback state of the first device, and wherein:
- the first device or the second device comprises converting means for converting data of a first form that is supplied form the variable rate control section or the maximum rate control section into data of a second form;
- and
- the second device decodes the data of the second form.
A data decoding method in a data decoding system having a first device for transferring encoded data via a digital interface configured according to a predetermined format using isochronous and asynchronous transferring packet, and a second device for receiving the data transferred via the digital interface and for decoding the received data said second device including:
- a variable rate control section for receiving a reproduction signal from the first device and for outputting it with given timing;
- a maximum rate control section for receiving a reproduction signal from the first device and for checking an output rate of the maximum rate control section so that the output rate does not exceed a transfer rate of the digital interface;
- a switch for selectively supplying reproduction data to the variable rate control section or the maximum rate control section in accordance with a playback state of the first device, wherein:
- the first device converts data of a first form that is supplied form the variable rate control section or the maximum rate control section into data of a second form and then transmits the data of the second form, or the second device receives the data of the first form and converts it into data of a second form;
- and
- the second device decodes the data of the second form.
A transfer device for transferring, via a digital interface configured according to a predetermined format using isochronous and asynchronous transferring packet, encoded data to a decoder that decodes the encoded data for a given data form, comprising:
- a variable rate control section for receiving a reproduction signal from the first device and for outputting it with given timing;
- a maximum rate control section for receiving a reproduction signal from the first device and for checking an output rate of the maximum rate control section so that the output rate does not exceed a transfer rate of the digital interface;
- a switch for selectively supplying reproduction data to the variable rate control section or the maximum rate control section in accordance with a playback state of the first device
- converting means for converting data of a first form that is supplied form the variable rate control section or the maximum rate control section into data of a second form that is the given data form in the decoder;
- and
- transferring means for transferring the data of the second form.
A transfer device for transferring, via a digital interface configured according to a predetermined format using isochronous and asynchronous transferring packet, encoded data to a decoder that decodes the encoded data for a given data form, comprising the steps of:
- a variable rate control section for receiving a reproduction signal from the first device and for outputting it with given timing;
- a maximum rate control section for receiving a reproduction signal from the first device and for checking an output rate of the maximum rate control section so that the output rate does not exceed a transfer rate of the digital interface;
- a switch for selectively supplying reproduction data to the variable rate control section or the maximum rate control section n accordance with a playback state of the first device
- converting data of a first form that is supplied form the variable rate control section or the maximum rate control section into data of a second form that is the given data form in the decoder;
- and
- transferring the data of the second form.
A receiving device in a data decoding system for receiving encoded data transferred via a digital interface configured according to a predetermined format using isochronous and asynchronous transferring packet and for decoding the received data for a given data form, the receiving device comprising:
- receiving means for receiving data of a first form;
- a variable rate control section for receiving a reproduction signal from the first device and for outputting it with given timing;
- a maximum rate control section for receiving a reproduction signal from the first device and for checking an output rate of the maximum rate control section so that the output rate does not exceed a transfer rate of the digital interface;
- a switch for selectively supplying reproduction data to the variable rate control section or the maximum rate control section in accordance with a playback state of the first device:
- converting means for converting the data of the first form that is supplied form the variable rate control section or the maximum rate control section into data of a second form that is the given data form;
- and
- decoding means for decoding the data of the second form.
A receiving method in a data decoding system for receiving encoded data transferred via a digital interface configured according to a predetermined format using isochronous and asynchronous transferring packet and for decoding the received data for a given data form, the receiving method comprising the steps of:
- receiving data of a first form;
- a variable rate control section for receiving a reproduction signal from the first device and for outputting it with given timing;
- a maximum rate control section for receiving a reproduction signal from the first device and for checking an output rate of the maximum rate control section so that the output rate does not exceed a transfer rate of the digital interface;
- a switch for selectively supplying reproduction data to the variable rate control section or the maximum rate control section in accordance with a playback state of the first device
- converting data of the first form that is supplied form the variable rate control section or the maximum rate control section into data of a second form that is the given data form;
- and
- decoding the data of the second form.
A receiving device in a data decoding system for receiving encoded data transferred via a digital interface configured according to a predetermined format using isochronous and asynchronous transferring packet and for decoding the received data for a given data form, the receiving device comprising:
- first decoding means for decoding data of a first form;
- second decoding means for decoding data of a second form;
- a variable rate control section for receiving a reproduction signal from the first device and for outputting it with given timing;
- a maximum rate control section for receiving a reproduction signal from the first device and for checking an output rate of the maximum rate control section so that the output rate does not exceed a transfer rate of the digital interface;
- a switch for selectively supplying reproduction data to the variable rate control section or the maximum rate control section in accordance with a playback state of the first device and
- supplying means for receiving the data of the first or second form and for supplying the received data to the first decoding means or the second decoding means in accordance with a form of the received data.
A recording medium playback device for transferring, via a digital interface configured according to a predetermined format using isochronous and asynchronous transferring packets, encoded data that is read out from a recording medium to a decoder that decodes the encoded data for a given data form, comprising:
- a variable rate control section for receiving a reproduction signal from the recording medium and for outputting it with given timing;
- a maximum rate control section for receiving a reproduction signal from the recording medium and for checking an output rate of the maximum rate control section so that the output rate does not exceed a transfer rate of the digital interface;
- a switch for selectively supplying reproduction data to the variable rate control section or the maximum rate control section in accordance with a playback state of the recording medium;
- converting means for converting data of a first form that is supplied form the variable rate control section or the maximum rate control section into data of a second form that is the given data form in the decoder;
- and
- transferring means for transferring the data of the second form.
A data decoding system comprising:
- a first device for transferring encoded data via a digital interface and for transferring the reproduced data via an interface configured according to a predetermined format using isochronous and asynchronous transferring packet;
- and
- a plurality of second devices for receiving the data transferred via the interface and for performing digital-to-analog conversion on the received data, to output an analog signaled second device including:
- a variable rate control section for receiving a reproduction signal from the first device and for outputting it with given timing;
- a maximum rate control section for receiving a reproduction signal from the first device and for checking an output rate of the maximum rate control section so that the output rate does not exceed a transfer rate of the digital interface;
- a switch for selectively supplying reproduction data to the variable rate control section or the maximum rate control section in accordance with a playback state of the first device.
A receiving method in a data decoding system for receiving encoded data transferred via a digital interface and for decoding the received data for a given data form, the receiving method comprising the steps of:
- receiving data of a first form or a second form and for supplying the received data to a first decoding section or a second decoding section in accordance with a form of the received data;
- decoding the data of the first form in the first decoding section;
- and
- decoding the data of the second form in the second decoding section.
Dependencies are inferred from the claim text.