Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1997-03-21
2001-04-03
Nguyen, Huy (Department: 2615)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000
Reexamination Certificate
active
06212330
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, with the conventional LD mentioned above, video image or audio sound cannot be reproduced in such an interactive and variegated manner that gives the audience several options in selecting video image to be displayed or audio sound to be played back.
For example, when watching a foreign movie recorded in an LD, the audience cannot select preferable language for the title credit (subscript) displayed on the screen (e.g., select either Japanese language or the original language). Similarly, when listening to the music in a CD, the audience cannot select a preferable version out of multiple versions of the same music piece (e.g., English lyrics or Japanese lyrics).
Further, it is very difficult to store different editing versions of one movie (e.g., an original version, a theater version, a video version, etc.) on one LD or the like, because even common portions must be recorded double or more for each of these versions. Thus, under the current technique, it is practically necessary to store only one of these versions on respective one of the different disks. Accordingly, the audience cannot select one of the different versions of the same movie from one disk.
Furthermore, since it is also impossible to record multiple versions of a scene taken from different camera angles simultaneously in one movie film, the audience cannot select an image of a preferable camera angle among different camera angles. Thus, fun and enjoyment of the audience is limited in this respect.
The conventional LD or the like cannot treat both of a moving picture and a still picture simultaneously in the same scheme. For example, with a slide show composed of still pictures and associated audio sounds, it is impossible for the audience to search only the still picture corresponding to an arbitrary reproduction time.
Meanwhile, various proposals and developments as for the DVD, which is an optical disk having a memory capacity about ten times as much as that of the conventional CD without changing the size of the optical disk itself, are energetically being made nowadays. However, in case of recording onto the DVD the record information which can offer the multiple options to the audience in the aforementioned manner and which can reproduce the selected content of the record information correctly, reliably and promptly, various control informations must be recorded besides the various types of video information and audio information to be reproduced.
However, there is a problem in this case that the video image may break or may be interrupted, or the relation between the video image and the associated audio sound may be destroyed during the scanning reproduction due to the complicated relationships among the video and audio informations, and the control information for controlling these informations.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide: an information recording apparatus for recording information so that the record information can be precisely and smoothly reproduced from an information record medium capable of variegated reproductions in response to various reproduction modes including the scanning reproduction; an information record medium recorded by this information recording apparatus; and an information reproducing apparatus for reproducing the record information from this information record medium.
The above object of the present invention can be achieved by a first information recording apparatus provided with: a signal process device for (i) applying a predetermined process, such as the process based on the MPEG
2
method etc., to record information including video information and other information to be recorded onto an information record medium such as the DVD etc., to thereby output processed record information composed of a plurality of predetermined information units such as VOB (Video OBject) units (described later) etc., (ii) generating and outputting a first recording position information, such as a VOB unit address A etc., for respective one of the information units on the basis of control information to control a reproduction of said record information inputted from the external, the first recording position information being to be multiplexed to the processed record information by respective one of the information units and indicating recording positions on the information record medium of the information units corresponding to reproduction times of the record information within a predetermined range before and after the respective one of the information units on an axis of reproduction time of the record information, and (iii) generating and outputting second recording position information, such as a VOB unit address B etc., for respective one of the information units, the second recording position information being to be multiplexed together with the first recording position information to the processed record information by respective one of the information units, corresponding to the first recording position information and indicating recording positions of the video information to be reproduced within the predetermined range on the axis of reproduction time; a multiplex device for multiplexing the processed record information, the first recording position information and the second recording position information to each other by each of the information units, to thereby output multiplexed record information; and a record device, such as a mastering device etc., for recording the multiplexed record information onto the information record medium.
According to the first information recording apparatus of the present invention, the predetermined process is applied to the record information, so that the processed record information is outputted by the signal process device. On the basis of the control information, the first recording position information is generated and outputted for respective one of the information units, and the second recording position information is also generated and outputted for respective one of the information units, by the signal process device. Then, the processed record information, the first recording position information and the second recording position information are multiplexed to each other by each of the information units, so that the multiplexed record information is outputted by the multiplex device. Finally, the multiplexed record information is recorded onto the information record medium, by the record device.
Thus, at the time of reproducing the record information, by performing the reproduction on the basis of the first and second re
Moriyama Yoshiaki
Sawabe Takao
Tozaki Akihiro
Yamamoto Kaoru
Yoshimura Ryuichiro
Morgan & Lewis & Bockius, LLP
Nguyen Huy
Pioneer Electronic Corporation
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