US 6,983,101 B1 | ||
Image recording apparatus, image reproducing apparatus and image recording/reproducing apparatus | ||
Yukio Sugimura, Suita (Japan); Yoshiaki Maida, Shijyonawate (Japan); and Masanori Tokura, Daito (Japan) | ||
Assigned to Sanyo Electric Co., Ltd., Osaka (Japan) | ||
Filed on Mar. 30, 2000, as Appl. No. 9/537,755. | ||
Claims priority of application No. 11-092529 (JP), filed on Mar. 31, 1999; application No. 11-092530 (JP), filed on Mar. 31, 1999; application No. 11-092531 (JP), filed on Mar. 31, 1999; and application No. 11-092532 (JP), filed on Mar. 31, 1999. | ||
Int. Cl. H04N 5/91 (2006.01) |
U.S. Cl. 386—107 | 3 Claims |
1. An image recording apparatus for recording on a recording medium a time division multiplex image signal obtained by subjecting
image signals from a plurality of video cameras to time division multiplexing and having information relating to the camera
numbers of the video cameras respectively corresponding to fields included therein added thereto, comprising:
a plurality of basic image storage means respectively provided in correspondence with the camera numbers;
means for storing, for each group of fields assigned the same camera number which are included in the time division multiplex
image signal, image data as basic image data in the basic image storage means corresponding to the camera number assigned
to the group of fields in a period of a predetermined number of fields as well as feeding the image data as it is, to the
image compression means;
means for finding, with respect to image data for each group of fields assigned the same camera number which are included
in the time division multiplex image signal, the difference between each of the image data corresponding to the fields between
the field corresponding to the image data which is stored in the basic image storage means and the field corresponding to
the image data which is to be subsequently stored in the basic image storage means and the basic image data which has been
most newly stored in the basic image storage means, and feeding data representing the obtained difference to the image compression
means; and
means for recording on a recording medium each of compressed data for each field which have been compressed by the image compression
means, together with identification information indicating whether the compressed data corresponds to the basic image data
or the difference data and the camera number.
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