Decoding apparatus for encoded video signals
a video signal and encoder technology, applied in the field of encoder video signal decoding, can solve the problems of high cost, hardware change, difficulty in providing flexibility for various applications, etc., and achieve the effect of increasing the usability of the encoder apparatus
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first embodiment
[0029]FIG. 1 is a block diagram of a video disc reproducing apparatus according to a first embodiment of the present invention. An encoded video signal of a primary video, and an encoded video signal and auxiliary information of a secondary video are stored in a disc 11 and a local storage 81, respectively. The encoded video signal of the primary video read from the disc 11 is inputted to a decoder 21. The inputted encoded video signal is decoded in the decoder 21, and the resulting primary video is outputted to a display screen forming part 71.
[0030]Likewise, the encoded video signal of the secondary video read from the local storage 81 is inputted to a decoder 22. The inputted encoded video signal is decoded in the decoder 22, and the resulting secondary video is outputted to the display screen forming part 71. A reference time counter part 41 counts reference time for performing decoding, and outputs the reference time to the decoders 21 and 22, the display screen formation part ...
second embodiment
[0036]FIG. 4 is a block diagram showing a video disc reproducing apparatus according to a second embodiment of the present invention. Duplicate descriptions of the same portions as in the first embodiment will be omitted.
[0037]In the second embodiment, unlike the first embodiment, secondary videos and auxiliary videos are recorded in the disc 11 along with primary videos. When secondary videos and auxiliary information are recorded in the disc 11 as in the second embodiment, the secondary videos can be viewed even in an environment in which connection to a network is not made, as described later. On the other hand, when secondary videos and auxiliary information are recorded in the local storage 81 as in the first embodiment, even when they are not recorded in the disc 11, the secondary videos can be viewed after subsequently obtaining both of them through a removable recording media and a network. Even when secondary videos and auxiliary information are recorded in the disc 11, adv...
third embodiment
[0041]The following describes a third embodiment of the present invention. Duplicate descriptions of the same contents as in the first embodiment will be omitted. A difference from the first embodiment is in the contents of auxiliary information, which is afforded as a command to the CPU in the third embodiment.
[0042]FIG. 6 shows part of auxiliary information supplied to the auxiliary information analyzing part 31. The auxiliary information is afforded to the CPU as a command of a language such as the JAVA (registered trademark) language. In the third embodiment, since part of processing of the auxiliary information analyzing part 31 is performed by software processing, the supplying of auxiliary information in the form of commands as described above provides an advantage of being capable of smoothly handling the information. Also in other points, the same effects as in the first embodiment can be obtained.
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