Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1996-12-18
2001-09-11
Garber, Wendy R. (Department: 2615)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000, C348S555000, C348S441000
Reexamination Certificate
active
06289174
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a composite video apparatus which can selectively display images from various video signal sources such as, for example, a video CD, a picture MD and a letter and character broadcast.
2. Description of the Related Art
Various video signal sources are available including recording media on which video signals are recorded and broadcasting signals from which video signals can be extracted.
Recording media on which video signals are recorded include, for example, various CDs (compact disks) such as video CDs, photographic CDs and navigation disks which are called CD-ROMs on which various video signals are recorded. Also magneto-optical disks called MDs (mini disks) have been spread widely in recent years, and particularly, mini disks on which not only music but also file data or video data can be recorded have been developed. For example, one of such mini disks called picture MD is used as a medium for recording a video signal.
Further, one of broadcasting signals from which video signals can be extracted is a letter and character broadcast in television broadcasting or FM multiplex broadcasting.
By the way, for a composite AV (audio/visual) apparatus for home use, an apparatus which can selectively output an image from such various image sources as mentioned above is demanded. However, such an apparatus as just mentioned has a problem in that a large circuit scale and a high cost cannot be avoided.
For example, in order to make an apparatus compatible with a video CD, a picture MD and a letter and character broadcast, the apparatus must include decoders and display output memories for the individual video apparatus.
Further, while a CD driver and a CD-ROM decoder for a video CD can be used commonly for other CD-ROMS such as a navigation disk and a photographic CD, special decoding processing is required particularly for a navigation disk. This is because special display control is required from, in addition to a function of displaying map information, another function unique to a navigation system of allowing scrolling display in any direction in response to a manual operation of a user. To this end, an LSI for exclusive use for decoding and display output is used frequently. Consequently, where a composite video apparatus is designed so as to be compatible with a navigation disk, a higher cost is required.
OBJECTS AND SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a composite video apparatus which can display an image from a plurality of image sources and prevents blurring in color of a display image from a particular image source.
It is another object of the present invention to provide a composite video apparatus wherein video signals reproduced from different recording media and video signals obtained by reception of broadcast letter and character multiplex signals are selectively written into a single memory and a read-out output is displayed by a display unit to achieve simplification in construction.
It is a further object of the present invention to provide a composite video apparatus wherein video data to be stored into memory means are formed from brightness signal data and color signal data and, when a video signal from a particular image source is to be displayed, conversion processing is performed for the video data so that the resolution of the brightness signal data and the resolution of the color signal may be substantially equal to each other and the data obtained by the conversion processing are written into the memory to prevent deterioration in picture quality arising from blurring in color.
In order to attain the objects described above, according to an aspect of the present invention, there is provided a composite video apparatus, comprising decoding means for decoding video data from video signals reproduced from a plurality of different types of recording media and/or from broadcasting signals received, memory means for storing the decoded video data so as to allow later display of the same, and control means for selectively writing and reading out the plurality of video data decoded by the decoding means into and from the memory means, the video data from the plurality of video signal sources being selectively displayed by display means under the control of the control means.
According to another aspect of the present invention, there is provided a composite video apparatus, comprising decoding means for decoding video data from video signals reproduced from a plurality of different types of recording media and/or from broadcasting signals received, memory means for storing the decoded video data so as to allow later display of the same, and control means for selectively writing and reading out the plurality of video data decoded by the decoding means into and from the memory means, the video data to be stored into the memory means being formed from brightness signal data and color signal data, the control means discriminating a particular video source based on an output of discrimination means, which discriminates the types of the video data of the plurality of recording media and/or of the broadcasting signals, and, for particular video data, performing conversion processing of the video data such that the brightness signal data may have a resolution substantially equal to that of the color signal data and then writes the video data obtained by the conversion processing into the memory means.
With the composite video apparatus, since the decoding means for decoding video data of a certain type of recording medium and the memory means for storing the decoded video data so as to be outputted for later display are used to perform display outputting of video data reproduced from another type of recording medium or video data extracted from a broadcasting signal, display memories corresponding to the individual video sources need not be provided. Consequently, the composite video apparatus is advantageous in that it can achieve simplification in circuit construction and reduction in cost.
Further, where the video data to be stored into the memory means are formed from brightness signal data and color signal data, the control means performs, for the video data from a particular video source, for example, for the video data from a letter and character broadcast or a navigation map image, conversion of the video data such that the resolution of the brightness signal data is equal to the resolution of the color signal data and then writes video data obtained by the conversion processing into the memory means. Consequently, the composite video apparatus is advantageous in that otherwise possible deterioration in picture quality arising from blurring in color can be prevented.
REFERENCES:
patent: 4219838 (1980-08-01), Rossi
patent: 4697176 (1987-09-01), Kawakami
patent: 4839746 (1989-06-01), Kanamaru
patent: 5177728 (1993-01-01), Otsubo et al.
patent: 5220411 (1993-06-01), Kitaura et al.
patent: 5239382 (1993-08-01), Hatakenaka et al.
patent: 5260801 (1993-11-01), Temma et al.
patent: 5521900 (1996-05-01), Ando et al.
patent: 5532836 (1996-07-01), Luyckx et al.
patent: 5559608 (1996-09-01), Kunihiro
patent: 5561649 (1996-10-01), Lee et al.
patent: 5596565 (1997-01-01), Yonemitsu et al.
patent: 5627809 (1997-05-01), Honjo
patent: 5631712 (1997-05-01), Suh et al.
patent: 5646934 (1997-07-01), Mizuno et al.
patent: 5652824 (1997-07-01), Hirayama et al.
patent: 5786863 (1998-07-01), Collins
patent: 5999505 (1999-12-01), Yasui
Boccio Vincent F.
Frommer William S.
Frommer Lawrence & Haug LLP.
Garber Wendy R.
Kessler Gordon
LandOfFree
Composite video apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composite video apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite video apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2490221