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Reset image transmission devices

A transmission device and replay technology, which is applied in image communication, pulse modulation TV signal transmission, TV, etc., can solve the problem that the order of asynchronous transmission and synchronous transmission cannot be guaranteed, control signals cannot be synchronized, and image decoding cannot be reversed. And other issues

Inactive Publication Date: 2005-12-07
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When generating the device for reverse playback image and the decoding device for reverse playback image through the IEEE1394 network, since the transmission sequence of asynchronous transmission and synchronous transmission cannot be guaranteed on the IEEE1394 network, there are MPEG images transmitted by synchronous transmission and The control signal transmitted by the asynchronous transfer mode cannot be synchronized, and the reverse playback image cannot be decoded.

Method used

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  • Reset image transmission devices
  • Reset image transmission devices
  • Reset image transmission devices

Examples

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Embodiment Construction

[0060] 1st embodiment

[0061] Fig. 1 is a block diagram showing the structure of a video transmission device of a reverse playback video generation device according to Embodiment 1 of the present invention. In this figure, 11 is the sending device, which is composed of the storage device 12 for storing data, the IEEE1394 sending and receiving unit 13 of the data sending and receiving unit, the reading unit 14 for reading the specified data from the above-mentioned storage device 12, and processing and storing in the storage device. The MPEG transport stream processing unit 15 of the 12 MPEG transport streams is constituted.

[0062] In addition, 16 is a playback device, 17 is an IEEE1394 transmitting and receiving unit that is a data transmitting and receiving unit, 18 is a command generating unit that generates a command specified by IEEE1394T.A. The MPEG video playback unit 20 for playback and display is a playback control unit that controls the MPEG video playback unit 19...

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Abstract

A reproduced image transmission apparatus which can display reversely reproduced images normally even when the transfer order of asynchronous transfer and isochronous transfer is not ensured on IEEE1394, in cases where an apparatus for generating the reversely reproduced images and an apparatus for decoding the reversely reproducing images are connected with each other via an IEEE1394 network. An MPEG transport stream processing means 15 embeds control signal for controlling decoding in an MPEG picture, and transmits the signal together with the MPEG picture through the IEEE1394 network in the isochronous transfer mode, whereby the synchronization between the MPEG picture and its control signal is surely obtained, thereby to generate reversely reproduced images according to MPEG using P and B pictures.

Description

technical field [0001] The present invention relates to an image playback system that transmits MPEG images stored on a hard disk contained in a transmitter to a receiving device through a two-way network such as IEEE1394, and particularly relates to generating reverse playback using P or B images on the receiving device. system for displaying images. Background technique [0002] In recent years, due to the improvement of network transmission speed and the increase of hard disk capacity, there has been a system that stores digital images recorded in MPEG on hard disks and sends them to receivers via the network. In this image network system, a high-speed network of IEEE1394 is used, and a storage device including a hard disk and a playback device for receiving and reproducing images are connected by using the network system. [0003] IEEE1394 includes an isochronous transfer function that guarantees the amount of data transferred within a certain period of time. Since the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/93H04N5/765H04N5/775H04N5/783H04N5/92H04N7/24H04N19/102H04N19/152H04N19/196H04N19/423H04N19/50H04N19/503H04N19/577H04N19/60H04N19/70H04N21/4363
CPCH04N21/43632H04N5/775H04N5/783
Inventor 山内贤一郎久野良树
Owner PANASONIC CORP
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