Video communication apparatus capable of electronically adjusting the
field of view of a video frame
    132.
    发明授权
    Video communication apparatus capable of electronically adjusting the field of view of a video frame 失效
    能够电子地调整视频帧的视场的视频通信装置

    公开(公告)号:US4996592A

    公开(公告)日:1991-02-26

    申请号:US391877

    申请日:1989-08-10

    申请人: Tetsuo Yoshida

    发明人: Tetsuo Yoshida

    CPC分类号: H04N7/141 H04N5/262

    摘要: A video communication apparatus for encoding a video signal representative of a scene being picked up by a video camera and transmitting the encoded signal. The apparatus generates, in response to a synchronizing signal synchronous to the video signal, signals representative of a predetermined pick-up area to be encoded which is smaller than the entire pick-up area being picked up by the video camera, and a signal representative of a position of the predetermined pick-up area in the entire pick-up area. These signals mark the predetermined pick-up area with the entire pick-up area. A memory stores video data associated with either one of the entire pick-up area and the predetermined pick-up area.

    摘要翻译: 一种视频通信装置,用于编码表示由摄像机拾取的场景的视频信号并发送编码信号。 该设备响应于与视频信号同步的同步信号,产生代表要被编码的预定接收区域的信号,其小于由摄像机拾取的整个拾取区域,以及信号代表 在整个拾取区域中的预定拾取区域的位置。 这些信号用整个拾取区域标记预定的拾取区域。 存储器存储与整个拾取区域和预定拾取区域中的任一个相关联的视频数据。

    Direct positive photographic light-sensitive material
    133.
    发明授权
    Direct positive photographic light-sensitive material 失效
    直接正拍摄感光材料

    公开(公告)号:US4970140A

    公开(公告)日:1990-11-13

    申请号:US242978

    申请日:1988-09-12

    IPC分类号: G03C1/485

    CPC分类号: G03C1/48538

    摘要: A direct positive photographic light-sensitive material is disclosed which comprises at least two direct positive emulsion layers having the same color sensitivity, wherein at least one hydrophilic colloid layer is provided between the direct positive emulsion layers. A direct positive photographic light-sensitive material having a high graininess, a soft tone, and a high picture quality can be obtained.

    摘要翻译: 公开了一种直接正性感光材料,其包含至少两个具有相同颜色灵敏度的直接阳性乳剂层,其中在直接阳性乳剂层之间提供至少一个亲水胶体层。 可以获得具有高粒度,柔和色调和高图像质量的直接正性摄影感光材料。

    Direct positive photographic light-sensitive materials
    134.
    发明授权
    Direct positive photographic light-sensitive materials 失效
    直接感光感光材料

    公开(公告)号:US4643965A

    公开(公告)日:1987-02-17

    申请号:US613702

    申请日:1984-05-24

    CPC分类号: G03C1/48576 Y10S430/141

    摘要: A direct positive photographic light-sensitive material is described, comprising a support and at least one internal latent image type silver halide emulsion layer containing core/shell type silver halide grains which are composed of a silver halide core subjected to at least one of doping with metal ions and chemical sensitization, and a silver halide shell covering at least sensitivity sites of said core, and a binder, wherein said core/shell type silver halide grains consist of two or more kinds of grains each having a different average grain size, and the core of the core/shell type silver halide grains having a larger average grain size is doped with a larger amount of lead ions, cadmium ions, or Group VIII metal ions.

    摘要翻译: 描述了一种直接的正型照相感光材料,其包括载体和至少一种含有核/壳型卤化银颗粒的内部潜像型卤化银乳剂层,其由卤化银芯构成,所述卤化银芯经受至少一种掺杂 金属离子和化学增感,以及至少覆盖所述芯的敏感位置的卤化银外壳和粘合剂,其中所述核/壳型卤化银颗粒由两种或更多种具有不同平均晶粒尺寸的晶粒组成,以及 具有较大平均晶粒尺寸的核/壳型卤化银颗粒的核心掺杂较多量的铅离子,镉离子或VIII族金属离子。