MOVING PICTURE FILE TRANSMITTING SERVER AND METHOD OF CONTROLLING OPERATION OF SAME
First Claim
1. A moving picture file transmitting server comprising:
- a moving picture file request receiving device for receiving a moving picture file request transmitted from a client terminal;
a leading segment converting device for converting file format, number of pixels per frame, bit rate, frame rate and amount of data of a leading segment of a moving picture file, which segment represents the leading segment of the moving picture specified by the moving picture file request, in such a manner that the leading segment can be reproduced by the client terminal that transmitted the moving picture file request and such that reproduction time thereof will be less than the time in which the moving picture file can be reproduced by the client terminal;
a first transmitting device for transmitting the leading segment, which has been converted by said leading segment converting device, to the client terminal that transmitted the moving picture file request;
a succeeding segment converting device for converting file format, number of pixels per frame, bit rate, frame rate and amount of data of a succeeding segment, which has a reproduction time less than that of the leading segment, during transmission of the leading segment by said first transmitting device, the succeeding segment being a segment that follows the leading segment transmitted by said first transmitting device;
a succeeding segment request receiving device for receiving a request for the succeeding segment transmitted from the client terminal; and
a second transmitting device, responsive to receipt of the succeeding segment request, for transmitting the succeeding segment, which has been converted by said succeeding segment converting device, to the client terminal that transmitted the succeeding segment request.
3 Assignments
0 Petitions
Accused Products
Abstract
A moving picture suitable for display on a mobile telephone is displayed comparatively quickly. When a moving picture is requested, a leading segment of the moving picture is converted. The leading segment has an amount of data which, after the conversion, is less than the amount of data that is displayable on the mobile telephone that issued the request. A succeeding segment, which can be converted while the leading segment is being transmitted to the mobile telephone and viewed by the user of the mobile telephone, is converted. If there is a request for the succeeding segment after the leading segment is viewed, the conversion of the succeeding segment will be finished by the time of the request for succeeding segment. As a result, the succeeding segment can be transmitted to the mobile telephone quickly, and it can be viewed rapidly.
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Citations
4 Claims
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1. A moving picture file transmitting server comprising:
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a moving picture file request receiving device for receiving a moving picture file request transmitted from a client terminal; a leading segment converting device for converting file format, number of pixels per frame, bit rate, frame rate and amount of data of a leading segment of a moving picture file, which segment represents the leading segment of the moving picture specified by the moving picture file request, in such a manner that the leading segment can be reproduced by the client terminal that transmitted the moving picture file request and such that reproduction time thereof will be less than the time in which the moving picture file can be reproduced by the client terminal; a first transmitting device for transmitting the leading segment, which has been converted by said leading segment converting device, to the client terminal that transmitted the moving picture file request; a succeeding segment converting device for converting file format, number of pixels per frame, bit rate, frame rate and amount of data of a succeeding segment, which has a reproduction time less than that of the leading segment, during transmission of the leading segment by said first transmitting device, the succeeding segment being a segment that follows the leading segment transmitted by said first transmitting device; a succeeding segment request receiving device for receiving a request for the succeeding segment transmitted from the client terminal; and a second transmitting device, responsive to receipt of the succeeding segment request, for transmitting the succeeding segment, which has been converted by said succeeding segment converting device, to the client terminal that transmitted the succeeding segment request.
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2. The server according to claim 1, further comprising a conversion control device for controlling the succeeding segment converting device in such a manner that the conversion by said succeeding segment converting device is repeated.
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3. The server according to claim 2, wherein in response to receipt of a succeeding segment request at said succeeding segment receiving device in a case where conversion of a succeeding segment by said succeeding segment converting device has not ended, a completed portion of the succeeding segment in the succeeding segment converting device is transmitted to the client terminal that transmitting the succeeding segment request.
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4. A method of controlling operation of a moving picture file transmitting server, comprising the steps of:
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receiving a moving picture file request transmitted from a client terminal; converting file format, number of pixels per frame, bit rate, frame rate and amount of data of a leading segment of a moving picture file, which segment represents the leading segment of the moving picture specified by the moving picture file request, in such a manner that the leading segment can be reproduced by the client terminal that transmitted the moving picture file request and such that reproduction time thereof will be less than the time in which the moving picture file can be reproduced by the client terminal; transmitting the converted leading segment to the client terminal that transmitted the moving picture file request; converting file format, number of pixels per frame, bit rate, frame rate and amount of data of a succeeding segment, which has a reproduction time less than that of the leading segment, during transmission of the leading segment, the succeeding segment being a segment that follows the leading segment that has been transmitted; receiving a request for the succeeding segment transmitted from the client terminal; and responsive to receipt of the succeeding segment request, transmitting the converted succeeding segment to the client terminal that transmitted the succeeding segment request.
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Specification