EP0589657A2
Expired / Lapsed
EP
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Network system and terminal apparatus
Assignee: Canon Inc
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Filing: 1993-09-20
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Granted: —
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Expires: 2013-09-20
Abstract
Abstract A moving image network system which has high response to a moving image transmission request and prevents interruption of a moving image signal. Upon transmitting moving image data from terminal 1 to terminal 2, controller 20 adds a transmitter terminal address, priority and a coding type of the moving image data to transmission load information received by transmission load information receiver 17, and outputs the data to transmission load information transmitter 16. The controller 20 encodes/decodes moving image data in accordance with transmission load information of the moving image data and adjusts transmission data amount corresponding to transmission load of a transmission path.
Inventors
- 👤 Mitsuru C/O Canon Kabushiki Kaisha Yamamoto
- 👤 Hiroshi c/o Canon Kabushiki Kaisha Mashimo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 17:39
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/60; H04N21/65; H04N21/658; H04L; H04L12/00; H04L12/28; H04L12/42; H04L12/427; H04L12/43; H04L12/433; H04L12/64; H04L12/6418; H04N19/00; H04N19/30; H04N19/37; H04N21/20; H04N21/23; H04N21/234; H04N21/23424; H04N21/236; H04N21/238; H04N21/2383; H04N21/25; H04N21/262; H04N21/26208; H04N21/26216; H04N21/40; H04N21/43; H04N21/434; H04N21/44; H04N21/44016; H04N21/63; H04N21/637; H04N21/6377; H04N7/00; H04N7/14; H04N7/141; H04N7/147; H04N7/148; H04N7/15; H04N7/152; H04L2012/6421; H04L2012/6429; H04L2012/6432; H04L2012/6437; H04L2012/6445; H04L2012/6448; H04L2012/6459; H04L2012/6464; H04L2012/6483; H04L47/00; H04L47/10; H04L47/13
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
62 words
An information network system comprising: a plurality of terminals; and a plurality of transmission media forming a transmission path among the plurality of terminals, each of transmission media connecting two of said plurality of terminals, wherein each of the plurality of terminals includes: a memory for relaying transmitted information; and transmission means for transmitting the transmitted information in accordance with priority order.
Claim 2
Dependent Claim
26 words
The system according to Claim 1, wherein said transmission means transmits the information in a predetermined direction on the transmission path formed with the transmission media.
Claim 3
Dependent Claim
13 words
The system according to Claim 1, wherein the information is moving image information.
Claim 4
Dependent Claim
61 words
A terminal apparatus comprising: reception means for receiving transmitted information; generation means for generating transmission information; memory means for storing at least a part of the transmitted information received by said reception means and the transmission information generated by said generation means; and transmission means for transmitting the information stored in said memory means in accordance with a given priority order.
Claim 5
Dependent Claim
82 words
The apparatus according to Claim 4, wherein said memory means includes: a plurality of memories in a predetermined order; and control means for storing the information received by said reception means into one of the plurality of memories in the predetermined order in accordance with priority information included in the information, and storing the transmission information generated by said generation means into one of the plurality of memories in the predetermined order in accordance with priority information included in the transmission information.
Claim 6
Dependent Claim
26 words
The apparatus according to Claim 5, wherein said transmission means performs transmission from data stored in one of the plurality of memories having the highest priority.
Claim 7
Dependent Claim
97 words
A moving image network system, in which a plurality of terminals are connected to each other via a transmission path, for inserting moving image data into a plurality of channels and transmitting/receiving the moving image data, comprising: means for generating transmission load information regarding transmission of the moving image data on the transmission path; means for transmitting/receiving the transmission load information; coding means for encoding the moving image data based on a predetermined coding method in accordance with the transmission load information; and decoding means for decoding the moving image data based on a predetermined decoding method.
Claim 8
Dependent Claim
47 words
The system according to Claim 7, wherein said transmission load information includes at least one of information specifying a transmitter terminal of the moving image data, information specifying a receiver terminal of the moving image data, transmission priority of the moving image data and a coding type.
Claim 9
Dependent Claim
29 words
The system according to Claim 7, wherein said coding means changes coding operation in accordance with a number of channels which the moving image data is to be inserted.
Claim 10
Dependent Claim
49 words
The system according to Claim 7, wherein, if there is no empty channel, said coding means deletes moving image data having priority lower than a predetermined priority and inserts the moving image data having priority higher than that of the deleted data into a channel for the deleted data.
Claim 11
Dependent Claim
19 words
The system according to Claim 7, wherein said decoding means changes decoding operation in accordance with the coding type.
Claim 12
Dependent Claim
68 words
The system according to Claim 7, wherein said coding means continues to divide the moving image data as a pixel unit having N (N is an integer) pixels into two pixel groups until a number of pixels belonging to each pixel group becomes one, and encodes the moving image data using N coding conversion values obtained from 2N-1 average values with respect to each pixel group image signal.
Claim 13
Dependent Claim
60 words
A moving image terminal connected to another terminal via a transmission path, for transmitting/receiving moving image data between the terminals, comprising: storage means for storing the moving image data; means for generating management information for the moving image data; and coding means for encoding the moving image data based on a predetermined coding method in accordance with the management information.
Claim 14
Dependent Claim
29 words
The terminal according to Claim 13, further comprising decoding means for decoding the moving image data based on a predetermined decoding conversion method in accordance with the management information.
Claim 15
Dependent Claim
78 words
The terminal according to Claim 13, wherein the management information includes at least information specifying a transmitter terminal of the moving image data, information specifying a receiver terminal of the moving image data, transmission priority of the moving image data, a coding type, a writing start address and writing end address for writing of the moving image data into said storage means, transmission time of the moving image data and allowable delay time of the moving image data.
Claim 16
Dependent Claim
79 words
The moving image terminal according to Claim 15, wherein said storage means stores the moving image data into a predetermined area in accordance with the transmission priority of the moving image data, and said storage means has data judgment means for judging, if there is untransmitted moving image data in the area, validity of the untransmitted moving image data based on the transmission time of the moving image data and the allowable delay time of the moving image data.
Claim 17
Dependent Claim
77 words
The moving image terminal according to Claim 16, wherein, if judgment time obtained by adding the transmission time of the moving image data and the allowable delay time of the moving image data reaches over current time, said data judgment means judges that the untransmitted moving image data is valid, while judges that the untransmitted moving image data is invalid and deletes the untransmitted moving image data if the judgment time does not reach the current time.
Claim 18
Dependent Claim
68 words
The system according to Claim 17, wherein said coding means continues to divide the moving image data as a pixel unit having N (N is an integer) pixels into two pixel groups until a number of pixels belonging to each pixel group becomes one, and encodes the moving image data using N coding conversion values obtained from 2N-1 average values with respect to each pixel group image signal.
Claim 19
Dependent Claim
47 words
An information transmitting apparatus comprising: first means for generating a moving image information to be transmitted; second means for generating another information that is no in regard to the moving image information; and means for transmitting the moving image information through network prior to said another information.
Claim 20
Dependent Claim
19 words
An information transmitting apparatus according to claim 19, wherein said moving image information is compressed by hierarchical compression method.
Claim 21
Dependent Claim
31 words
An information transmitting apparatus according to claim 19, wherein said transmitting means transmit lower resolution information of said moving image information prior to higher resolution information of said moving image information.
Claim 22
Dependent Claim
73 words
An information network system comprising a plurality of terminals, and a plurality of transmission media forming a transmission path by connecting the plurality of terminals; characterised in that the plurality of terminals respectively have a memory for relaying transmission information, and transmission means for transmitting the transmission information in accordance with priority order; wherein said system transmits the transmission information on the transmission path formed by the transmission media in a predetermined direction.
Claim 23
Dependent Claim
96 words
A moving image network system in which upon transmitting moving image data from a first terminal to a second terminal, a controller (20) adds a transmitter terminal address, priority and a coding type of the moving image data to transmission load information received by transmission load information receiver (17), and outputs the data to transmission load information transmitter (16), said controller (20) effecting encoding/decoding of the moving image data in accordance with the transmission load information of the moving image data and adjusts the transmission data amount corresponding to the transmission load of a transmission path.
References Cited (Backward Citations)
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