Recording and reproducing apparatus

Details Recording and reproducing apparatus Recording and reproducing apparatus

1998-08-24

2001-05-01

Nguyen, Huy (Department: 2615)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C386S349000, C386S349000, C386S349000

Reexamination Certificate

active

06226443

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an apparatus for recording and reproducing data representing video, data representing sound, and other auxiliary data onto/from a disk medium, a tape medium, or a recording and reproducing apparatus which can efficiently perform an editing operation and establish a network connected with an external system.
2. Description of the Related Art
As recording and reproducing apparatuses for magnetically recording and reproducing video and sound, tape type recording and reproducing apparatuses using a tape shaped medium, disk type recording and reproducing apparatuses using a disk shaped medium and the like are currently known.
As tape type recording and reproducing apparatuses, video tape recorders (hereinafter, abbreviated as “VTRs”), data streamers and the like are known. As disk type recording and reproducing apparatuses, magneto-optical disk apparatuses (hereinafter, abbreviated as “MOs”), hard disk drive apparatuses (hereinafter, abbreviated as “HDDs”), floppy disk drive apparatuses (hereinafter, abbreviated as “FDDs”) and the like are known.
On the other hand, a VTR conformable to DVC standard (hereinafter, simply referred to as a “DVC type VTR) is known as an exemplary digital recording and reproducing apparatus. The DVC standard is described, for example, in the magazine “National Technical Report”, Vol. 41, No. 2, April 1995, pp. 152-159.
In a DVC type VTR, a recording signal is composed of 10 tracks per period corresponding to one frame of a video. On one track, there are the following four sectors: (1) an ITI (insert and track information) sector; (2) an audio sector; (3) a video sector; and (4) a sub-code sector.
An audio sector and a video sector are regions for recording data representing sound and data representing video, respectively thereon, and are respectively provided with an audio AUX and a video AUX as regions for recording auxiliary data thereon.
As sub-codes or data other than sound and video, the following information is recorded in the sub-code sector. In an ID section, an INDEX-ID (a marker for searching for a program), a PPII (a marker for searching for an image), a SKIP ID (a marker indicating a skip start position), an absolute track number (a track number indicating the position from the recording start track at the beginning of a tape) and the like are provided as recording information.
On the other hand, in a data section of the sub-code sector, a Title Time Code (a time code representing a recording time from the recording start track at the beginning of a tape), a Rec Data (a time code representing a recording date (month/day/year)) and a Rec Time (or a time code representing a recording time (hour/minute/second)) can be recorded.
In the DVC method, video and sound recorded on a tape can be searched for at a high speed by using these kinds of information.
However, in a conventional DVC type VTR, video data, audio data and auxiliary data are recorded on a tape. Accordingly, such a VTR has a problem in that the contents of a video program recorded thereon cannot be rapidly identified at substantially real time.
Moreover, a DVC type VTR also has a problem in that a user like a reporter, a journalist, an editor or a director cannot efficiently record a long descriptive sentence for a news item or the like as text data or graphic data and then rapidly search for video, sound and the like which are ordinarily searched for by a keyword search or the like.
On the other hand, a team (or reporting crew) reporting an event or an accident for a TV program ordinarily consists of a plurality of members, including reporters informing of the situation and video cameramen. In general, such a reporting crew needs a large number of members. If character data can be recorded and communicated simultaneously with video and sound for reporting more accurate situation of the spot where the materials are collected, then the efficiency of a news reporting system can be improved.
SUMMARY OF THE INVENTION
According to the present invention, a recording and reproducing apparatus for recording and reproducing hybrid data, including at least one of video data, audio data and additional data, onto a recording medium is provided. The recording and reproducing apparatus includes: a bus for transmitting data therethrough; an interface for receiving the video data and the audio data and outputting these data to the bus; a text unit for generating text data and outputting the text data to the bus; a processor for receiving the video data, the audio data and the text data via the bus, generating the hybrid data from the video data, the audio data and the text data and outputting the generated hybrid data to the bus; a recording unit for receiving the hybrid data via the bus and recording the hybrid data onto the recording medium; a reproducing unit for reproducing the hybrid data recorded on the recording medium; and an output unit for displaying the hybrid data reproduced by the reproducing unit.
In one embodiment, the recording and reproducing apparatus further includes a VTR interface which is connected to the bus and receives a data stream having a data rate four times as high as a rate of data output by a digital VTR in a normal reproducing operation.
In another embodiment, the recording and reproducing apparatus further includes a VTR for outputting a data stream at a data rate four times as high as a data rate in a normal reproducing operation.
In still another embodiment, the interface outputs the video data and the audio data at an interval which is N (where N is a natural number) times as long as a unit frame period of the video data.
In still another embodiment, the additional data includes at least one of a time code and a sub-code which are defined in conformity with a digital VTR standard.
In still another embodiment, the recording and reproducing apparatus further includes means for storing the text data in a region which is used for recording the additional data of the hybrid data thereon and corresponds to a plurality of frames, in a case where the text data is not able to be recorded in a region which is used for recording the additional data of the hybrid data thereon and corresponds to one frame.
In still another embodiment, the recording and reproducing apparatus further includes means for performing a search operation by using the text data as key words.
In still another embodiment, the recording and reproducing apparatus further includes means for determining whether or not a data amount of the text data exceeds a recordable data amount of the recording medium.
In still another embodiment, the recording and reproducing apparatus further includes means for determining whether or not it is possible to seamlessly reproduce a signal from the recording medium.
In still another embodiment, the hybrid data to be recorded is recorded in respectively different regions on the recording medium such that a signal is able to be reproduced seamlessly from the recording medium.
In still another embodiment, the recording and reproducing apparatus further includes a communication interface which is connected to the bus and communicates with an external device, thereby transmitting the hybrid data to the external device or receiving the hybrid data from the external device.
In still another embodiment, the hybrid data is transmitted in a form of either one of a PES packet and a transport packet which are defined in conformity with an MPEG standard.
In still another embodiment, a data rate of the hybrid data transmitted between the communication interface and the external device is higher than a rate of data output by a digital VTR in a normal reproducing operation.
In still another embodiment, the communication interface further includes means for converting a data rate such that a data rate on a side of the bus becomes different from a data rate on a side of the external device.
In still another embodiment, the recording and reproducing apparatus further includes means for receiving the hybrid

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