Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1999-12-02
2004-08-17
Tran, Thai (Department: 2615)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000, C360S020000, C369S047360, C369S124040
Reexamination Certificate
active
06778761
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an information record medium such as an optical disk of a high recording density type, which is capable of recording information such as video information, audio information and the like at a high density, and which is represented by a DVD (Digital Video or Versatile Disk). The present invention also relates to a recording apparatus for recording the information onto the information record medium, and a reproducing apparatus for reproducing the information from the information record medium.
2. Description of the Related Art
Conventionally, a so-called LD (Laser Disk) and a so-called CD (Compact Disk) are generalized as optical disks, on which information such as video information, audio information and the like is recorded.
On the LD or the like, the video information and the audio information are recorded together with time information indicating a time at which each information is to be reproduced with respect to a reproduction start position, which each LD or the like has, as a standard position. Thus, other than a general normal reproduction to reproduce the recorded information in the order of recording, various special reproductions are possible, such as a reproduction to extract and listen to an only desirable music out of a plurality of recorded musics, a reproduction to listen to the recorded musics in a random order and so on, in case of the CD, for example.
However, there is a problem that, according to the above mentioned LD or the like, a so-called interactive and variegated reproduction is not possible in which the audience can have a plurality of selection branches as for the video or audio information to be displayed or sound-outputted and in which the audience can select them to watch or listen to it.
Namely, for example, in case of giving audience to a foreign movie on the LD, it is not possible to select one of languages to be used for a subtitle (caption) displayed on the picture plane (e.g., select one of the subtitle in Japanese and the subtitle in the original language) so as to display the subtitle in the selected language, or, in case of giving audience to a music recorded on the CD, it is not possible to select one of sound voices of the music (e.g., select one of the English lyric and the Japanese lyric).
On the other hand, various proposals and developments are being made as for the DVD, as an optical disk in which the memory capacity is improved by about ten times without changing the size of the optical disk itself as compared with the aforementioned conventional CD. With respect to this DVD, if a plurality of subtitles in various languages or a plurality of voice sounds in various languages are recorded, the above mentioned interactive and variegated reproduction is possible as the audience selects one of them.
When recording the audio voices in a plurality of different languages, various kinds of musics and the like on the DVD, it is possible to increase the number of bits at a time of digitizing and recording them to thereby record the audio sound and the like with high quality. However, at this time, if trying to make the reproducing apparatus cheaper by utilizing a decoder used in the conventional reproducing apparatus; there may be a case where the decoder does not have a processing capacity corresponding to the number of the bits of the audio sound and the like recorded on the DVD.
In this case, unless the audio sound or the like is recorded in an appropriate recording condition, there may occur a problem that the audio information to be reproduced cannot be reproduced at a time of reproducing by using the cheap reproducing apparatus in which the conventional decoder is utilized.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide: an information recording apparatus, which can record the audio sound etc. in such a manner that the audio sound etc. can be easily reproduced from the DVD etc., by either one of a cheap reproducing apparatus, which is equipped with a decoder having the same function as that of the conventional decoder, and a reproducing apparatus, which is equipped with a high performance decoder dedicated to the DVD etc.; an information record medium, on which the audio sound etc. are recorded by the information recording apparatus in that manner; and an information reproducing apparatus, which can reproduce the audio sound etc. from the information record medium.
The above object of the present invention can be achieved by an information recording apparatus provided with: a quantize device for quantizing record information to be recorded, by 8×n (n is a natural number equal to or more than 2) bits at every quantization timing, to thereby output quantized record information; a divide device for dividing the quantized record information quantized at one quantization timing, into (i) high order bit quantized record information, which is a portion at high order 8×m (m<n, and m is a natural number) bits of the quantized record information including a predetermined portion of the record information, which must be reproduced at a time of reproducing the record information, among the quantized record information quantized at the one quantization timing, and (ii) low order bit quantized record information, which is another portion of the quantized record information other than the high order bit quantized record information among the quantized record information quantized at the one quantization timing; a multiplexed record information generation device for constituting, on the basis of the divided high order bit quantized record information and the divided low order bit quantized record information, (i) a high order bit quantized record information block including a plurality of high order bit quantized record informations corresponding to consecutive quantization timings and (ii) a low order bit quantized record information block including a plurality of low order bit quantized record informations corresponding to the consecutive quantization timings, to which the high order bit quantized record informations constituting the high order bit quantized record information block correspond, and for multiplexing the constituted high order bit quantized record information block and the constituted low order bit quantized record information block adjacent to each other to thereby generate multiplexed record information; and a record device, such as a mastering device etc., for recording the multiplexed record information onto an information record medium such as the DVD or the like.
According to the information recording apparatus of the present invention, the record information is quantized by 8×n (n is a natural number equal to or more than 2) bits at every quantization timing, and the quantized record information is outputted by the quantize device. Then, the quantized record information quantized at one quantization timing is divided, by the divide device, into the high order bit quantized record information and the low order bit quantized record information. After that, on the basis of the divided high order bit quantized record information and the divided low order bit quantized record information, the high order bit quantized record information block and the low order bit quantized record information block are constituted, and the constituted high order bit quantized record information block and the constituted low order bit quantized record information block are multiplexed adjacent to each other, so that the multiplexed record information is generated by the multiplexed record information generation device. Finally, the multiplexed record information is recorded onto the information record medium, such as the DVD or the like, by the record device, such as a mastering device etc.
In this manner, the record information is divided into the high order bit quantized record information at the high order 8×m bits including the record information which must be reproduced at a time of reproduci
Ishii Hidehiro
Kurashina Hiroyuki
Moriyama Yoshiaki
Sawabe Takao
Takahashi Tokihiro
Morgan & Lewis & Bockius, LLP
Onuaku Christopher
Pioneer Electronic Corporation
Tran Thai
LandOfFree
Information record medium, apparatus for recording the same... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Information record medium, apparatus for recording the same..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Information record medium, apparatus for recording the same... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3347303