Dynamic image receiver and dynamic image transmitter

• US 20030138050A1
• Filed: 11/25/2002
• Published: 07/24/2003
• Est. Priority Date: 03/30/2001
• Status: Abandoned Application

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Sugimoto, Kazuo, Yamada, Yoshihisa, Asai, Kohtaro, Kuroda, Shinichi, Ogawa, Fuminobu
• Application Number:
  US10/296,493
• Publication Number:
  US 20030138050A1
• Time in Patent Office: Days
• US Class Current: 375/240.25
• CPC Class Codes: H04N 21/2343 involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements video transcoding H04N19/40; media packet handling at the source H04L65/762
• CPC Class Codes: H04N 21/234318 by decomposing into objects, e.g. MPEG-4 objects
• CPC Class Codes: H04N 21/23439 for generating different versions
• CPC Class Codes: H04N 21/2402 Monitoring of the downstream path of the transmission network, e.g. bandwidth available traffic monitoring in data switching networks H04L43/00; monitoring data switching networks utilization H04L43/0876
• CPC Class Codes: H04N 21/254 Management at additional data server, e.g. shopping server, rights management server arrangements for maintenance or administration in data networks H04L41/00; network services using third party service providers H04L67/53
• CPC Class Codes: H04N 21/25808 Management of client data terminal profiles in network data switching protocols H04L67/303
• CPC Class Codes: H04N 21/25833 involving client hardware characteristics, e.g. manufacturer, processing or storage capabilities allocation of resources considering hardware capabilities in multiprogramming arrangements G06F9/5044; allocation of resources considering software capabilities in multiprogramming arrangements G06F9/5055
• CPC Class Codes: H04N 21/2662 Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
• CPC Class Codes: H04N 21/44209 Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896
• CPC Class Codes: H04N 21/472 End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content end-user interfaces for retrieving video data from a database G06F16/739; network services for supporting unicast streaming H04L65/612
• CPC Class Codes: H04N 21/643 Communication protocols network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP], H04L65/65
• CPC Class Codes: H04N 21/64792 Controlling the complexity of the content stream, e.g. by dropping packets intermediate media network packet handling H04L65/765; proxy provisioning conversion or adaptation for reducing the amount or size of exchanged application data H04L67/5651; negotiation of resources in wireless networks H04W28/16
• CPC Class Codes: H04N 21/6582 Data stored in the client, e.g. viewing habits, hardware capabilities, credit card number arrangements where receivers interact with the broadcast H04H20/38
• CPC Class Codes: H04N 7/173 with two-way working, e.g. subscriber sending a programme selection signal

Abstract

A plurality of moving picture transmitters (11 to 1n) encode a plurality of input objects, respectively, and transmit them onto a network (41). A moving picture receiver (21) receives bitstream data transmitted from each of the plurality of moving picture transmitters (11 to 1n), obtains information on the quality of the network (41), detects an error or the like that occurs in the bitstream data, and transmits priority information on the plurality of objects to the plurality of moving picture transmitters (11 to 1n), respectively. A registration server 31 registers information on the plurality of moving picture transmitters (11 to 1n) and information on the moving picture receiver 21 therein, and delivers them according to circumstances.

Claims

1. A moving picture receiver that receives a plurality of bitstream data encoded on an object-by-object basis from a moving picture transmitter so as to produce a picture, characterized in that said receiver comprises:

a bitstream receiving means for receiving the plurality of bitstream data;

a decoding means for decoding said plurality of received bitstream data; and

a data transmitting means for transmitting priority information defined on an object-by-object basis to said moving picture transmitter.

2. The moving picture receiver according to claim 1, characterized in that said decoding means includes a picture displaying means for displaying a picture of decoded objects, and when priority information is specified for each object displayed by said picture displaying means, said data transmitting means transmits the specified priority information to said moving picture transmitter.

3. The moving picture receiver according to claim 1, characterized in that said bitstream receiving means detects quality of a network that each object uses when receiving bitstream data on each object, and said data transmitting means transmits the quality of the network to said moving picture transmitter as the priority information on each object.

4. The moving picture receiver according to claim 1, characterized in that said decoding means detects a decoding error when decoding bitstream data on each object, and said data transmitting means transmits the detected decoding error to said moving picture transmitter as the priority information on each object in which the decoding error has been detected.

5. The moving picture receiver according to claim 1, characterized in that said receiver selects objects which can be received based on priority information on a priority assigned to an object, which is transmitted from said moving picture transmitter, and information on a decoding ability of said decoding means, and receives bitstream data on the selected objects.

6. A moving picture receiver connected to a registration server and a moving picture transmitter by way of a network, for receiving a plurality of bitstream data encoded on an object-by-object basis from said moving picture transmitter so as to produce a picture, characterized in that said receiver comprises:

a bitstream receiving means for receiving the plurality of bitstream data;

a decoding means for decoding said plurality of received bitstream data; and

a data transmitting means for transmitting priority information defined on an object-by-object basis to said moving picture transmitter, and characterized in that said receiver allows said registration server to select objects which can be received based on both priority information on a priority assigned to an object, which is transmitted from said moving picture transmitter registered in said registration server, and information on a decoding ability of said decoding means, and receives bitstream data on the selected objects.

7. A moving picture transmitter that transmits bitstream data encoded on an object-by-object basis to a moving picture receiver, characterized in that said transmitter comprises:

an encoding means for encoding a picture so as to produce bitstream data on an object-by-object basis;

a bitstream transmitting means for transmitting the bitstream data produced by said encoding means to said moving picture receiver;

a data receiving means for receiving priority information on priorities respectively assigned to objects transmitted from said moving picture receiver; and

an encoding control means for controlling said encoding means based on the priority information received by said data receiving means.

8. A moving picture transmitter that transmits bitstream data encoded on an object-by-object basis to a moving picture receiver, characterized in that said transmitter comprises:

a plurality of bitstream storing means for storing a plurality of bitstream data obtained by encoding a picture on an object-by-object basis, respectively;

a data receiving means for receiving priority information on priorities respectively assigned to objects transmitted from said moving picture receiver;

a selecting means for selecting one bitstream storing means from among said plurality of bitstream storing means based on the priority information received by said data receiving means; and

a bitstream transmitting means for transmitting bitstream data stored in said selected bitstream storing means.

9. The moving picture transmitter according to claim 8 characterized in that said plurality of bitstream storing means store a plurality of bitstream data obtained by encoding a same object with different bit rates, respectively.

10. The moving picture transmitter according to claim 8 characterized in that each of said plurality of bitstream storing means adds overhead information to a head of a predetermined frame of bitstream data and stores the bitstream data therein.

11. The moving picture transmitter according to claim 8 characterized in that each of said plurality of bitstream storing means stores bitstream data into which intraframe-predictive-encoded frames are inserted at predetermined intervals, and said selecting means switches from a selected one of said plurality of bitstream storing means to another bitstream storing means at a timing at which said selected bitstream storing means outputs an intraframe-predictive-encoded frame.

12. The moving picture transmitter according to claim 11 characterized in that each of said plurality of bitstream storing means produces position information on positions of the intraframe-predictive-encoded frames inserted into the bitstream data stored therein in advance.

13. The moving picture transmitter according to claim 8 characterized in that each of said plurality of bitstream storing means stores bitstream data to which predetermined overhead information is added, and when a same bitstream storing means has been continuously selected by said selecting means, said bitstream transmitting means removes the overhead information from the bitstream data being output from said selected bitstream storing means and transmits the bitstream data from which the overhead information has been removed.