Motion image display apparatus

• US 5,914,728 A
• Filed: 02/26/1993
• Issued: 06/22/1999
• Est. Priority Date: 02/28/1992
• Status: Expired due to Term

• Current Assignee: Hitachi Maxell Limited (Maxell, Ltd.)
• Original Assignee: Hitachi, Ltd.
• Inventors: Miyamoto, Takanori, Wada, Kenichi, Yamagishi, Masami, Tabata, Kuniaki, Kohiyama, Tomoshisa, Noumi, Makoto, Hino, Masahumi, Maehara, Tomoharu, Yamada, Takahiro, Tomita, Taminori
• Primary Examiner(s): LAO, LUN YI
• Application Number:
  US08/022,941
• Time in Patent Office: 2,307 Days
• Field of Search: 345/1, 345/2, 345/10, 345/11, 345/127, 345/132, 345/196, 345/202, 345/199, 345/154, 345/119, 345/120, 345/507-509, 345/439, 345/472, 348/562, 348/563, 348/564, 348/566, 348/567, 348/568, 348/552, 348/581, 348/588, 348/580, 348/582, 348/583, 382/298, 395/157, 395/164
• US Class Current: 345/565
• CPC Class Codes: G09G 2320/0261 in the context of movement of objects on the screen or movement of the observer relative to the screen
• CPC Class Codes: G09G 2340/125 wherein one of the images is motion video
• CPC Class Codes: G09G 5/391 Resolution modifying circuits, e.g. variable screen formats
• CPC Class Codes: G09G 5/393 Arrangements for updating the contents of the bit-mapped memory
• CPC Class Codes: H04N 21/4143 embedded in a Personal Computer [PC]
• CPC Class Codes: H04N 21/4316 for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
• CPC Class Codes: H04N 21/4402 involving reformatting operations of video signals for household redistribution, storage or real-time display details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764
• CPC Class Codes: H04N 21/4788 communicating with other users, e.g. chatting arrangements for providing for computer conferences, e.g. chat rooms, to substation in data switching networks H04L12/1813; distributed application using peer-to-peer [P2P] networks H04L67/104
• CPC Class Codes: H04N 5/45 Picture in picture , e.g. displaying simultaneously another television channel in a region of the screen
• CPC Class Codes: H04N 7/147 Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals selecting H04Q
• CPC Class Codes: H04N 9/641 Multi-purpose receivers, e.g. for auxiliary information H04N9/642 takes precedence

Abstract

A multimedia system capable of readily permitting expansion of its display memory as well as its compression/expansion function and other features as desired. The multimedia system is implemented by an information processing apparatus which includes a controller which controls the apparatus, an extended input/output bus for connecting with the controller, and interface device which interfaces with the extended input/output bus, at least one function extending device which extends the functionality of the controller and a local bus for permitting data exchanges between the interface device and the function extending device.

Claims

1. A motion image display apparatus comprising:

a high speed bus which is capable of transferring motion image data at a required frame rate;

a video input device for digitizing an analog video signal by converting said analog video signal into a digital video data;

a memory device for storing data;

a scaling device for scaling said digital video data from said video input device in the horizontal or the vertical direction and forming scaled motion image data in real time;

a destination address table having a plurality of entries each of which specifies a start address at which a beginning of a scaled motion image data is to be stored or read from said memory device on a line by line basis;

a data transfer device which transfers on said high speed bus, said scaled motion image data or a portion of said scaled motion image data from said scaling device of a continuous address area to said memory device by using said destination address table and transfers, on said high speed bus, said scaled motion image data from said memory device to a display for displaying thereon using said destination address table; and

a color space converter which converts color format of said scaled motion image data from said data transfer device to a format apparatus for said display.

2. A motion image display apparatus according to claim 1, wherein said destination address table contains one start address per each horizontal scan line of said scaled motion image data.

3. A motion image display apparatus according to claim 1, wherein said destination address table contains at least two start addresses per each horizontal scan line of said scaled motion image data.

4. A motion image display apparatus according to claim 2 or 3 comprising:

a function extending device which is connected to said high speed bus; and

a second memory device which is connected to said high speed bus, and which is part of said function extending device.

5. A motion image display apparatus according to claim 4, wherein said function extending device is a video data compressing device for compressing said scaled motion image data from to compressed motion image data.