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    • 31. 发明公开
    • PROTECTIVE CAP
    • SCHUTZFILM
    • EP0890320A1
    • 1999-01-13
    • EP96926577.6
    • 1996-08-07
    • Searaise Corporation Co., Ltd.
    • SHIRAI, Syoji Sea Raise Corporation Co., Ltd.
    • A42B3/28
    • A42B3/283A42B3/063
    • It is an object of the present invention to provide a protective cap which is excellent in the permeability and ventilating capability, and having a waterproof feature in rainy weather or the like, and having a considerable strength.
      The protective cap according to the present invention comprises a cap body having an inner layer and an outer layer with a clearance therebetween, a number of air holes are provided in the inner and outer layers so that the air holes in the inner layer are displaced from those in the outer layer, in addition dams are provided around the air holes on a surface of the inner layer facing the outer layer, and a spacers each comprising a vertical wall contacting the inner and outer layers are provided at a center of or in adjacent to the air holes. Also the protective cap according to the present invention comprises a cap body having an inner layer and an outer layer with a clearance therebetween, and concave stripes and convex stripes each extending from the vertex in the radial direction are provided alternately on a surface of the inner layer facing the outer layer with air holes provided in the convex stripes, and on the other hand air holes are formed in the outer layer at positions opposite to the concave stripes on the inner layer.
    • 本发明的目的是提供一种透气性和通风能力优异的保护盖,并且在雨天等中具有防水特性,并且具有相当的强度。 根据本发明的保护盖包括具有内层和具有间隙的外层的盖体,在内层和外层中设置有多个气孔,使得内层中的气孔从 另外,外层中的那些设置在面向外层的内层的表面上的空气孔周围,并且每个包括与内层和外层接触的垂直壁的间隔件设置在相邻的中心处 到气孔。 另外,根据本发明的保护盖还包括具有内层和外层之间具有间隙的盖体,并且在内侧的表面上交替地设置从径向方向从顶点延伸的凹条纹和凸条, 层与外层相对设置有设置在凸条中的气孔,另一方面,在外层中与内层上的凹条相反的位置形成气孔。
    • 37. 发明公开
    • JPEG COMPRESSION CIRCUIT WITH FILTERING
    • JPEG压缩电路具有过滤
    • EP0842586A1
    • 1998-05-20
    • EP96917250.0
    • 1996-06-05
    • POLAROID CORPORATION
    • REISCH, Michael, L.
    • G06T9H03H17H04N1H04N7
    • H03H17/0202H04N19/124H04N19/126H04N19/48H04N19/527H04N19/60H04N19/80H04N19/86H04N19/90
    • A system for filtering an image during data compression using a standard JPEG compression/decompression chip typically requires a separate spatial filter external to the chip. The spatial filter is composed of numerous shift registers, flip-flops, multipliers and at least one adder. In contrast, an image filtering system which filters in the frequency domain using the inventive JPEG compression chip modified for filtering in the frequency domain does not require the separate spatial filter and its many components. The modified JPEG chip includes a raster to block converter which converts an image signal into 8x8 blocks, a DCT processor which converts the 8x8 blocks into DCT coefficients, a multiplier which generates filtered DCT coefficients by multiplying predetermined filtering coefficients times the DCT coefficients, a quantizer which generates quantized blocks to a predetermined level stored in a visibility table by quantizing the filtered coefficients, a zigzag scanner which generates a vector having the same number of elements as the quantized blocks, a run-length coder for determining the appropriate run-length according to entropy encoding received from a preloaded Huffman table, and a variable length code packer/unpacker for compressing the entropy encoded vector. A block to raster converter is included to reformat decompressed data.