公开(公告)号：US07263188B2

公开(公告)日：2007-08-28

申请号：US09973336

申请日：2001-10-09

申请人： Fumio Kohno

发明人： Fumio Kohno

IPC分类号： H04N7/167 ,  H04L9/00

CPC分类号： G11B20/0021 ,  G11B20/00086 ,  G11B20/00181 ,  G11B20/00188 ,  G11B20/00231 ,  G11B20/00557 ,  G11B20/00666 ,  G11B20/0071 ,  G11B20/00753 ,  G11B20/00768 ,  G11B20/00797 ,  G11B2220/60

摘要： A data delivery system has a capability of effectively and reliably protecting copyright of the data. A video source of a movie or the like is delivered in the form of encrypted data from a server apparatus to a playback apparatus. A decryption key used to decrypt the encrypted data is stored on a storage medium such as a memory card, and the storage medium is sent from the server apparatus to the playback apparatus in parallel with the delivery of the encrypted data. After completion of the playing of the movie by the playback apparatus in a movie theater, the storage medium is returned to the server apparatus. The server apparatus examines information stored on the storage medium to check whether the video source delivered in the form of data has been properly used in an authorized manner.

摘要翻译： 数据传送系统具有有效和可靠地保护数据的版权的能力。 电影等的视频源以加密数据的形式从服务器装置传送到播放装置。 用于解密加密数据的解密密钥存储在诸如存储卡的存储介质上，并且与传送加密数据并行地将存储介质从服务器装置发送到重放装置。 在通过电影院中的重放装置完成播放电影之后，存储介质被返回到服务器装置。 服务器装置检查存储在存储介质上的信息，以便以授权的方式检查以数据形式传送的视频源是否被正确地使用。

公开(公告)号：US5343257A

公开(公告)日：1994-08-30

申请号：US872348

申请日：1992-04-23

申请人： Fumio Kohno ,  Hisashi Suwa ,  Seizi Sato

发明人： Fumio Kohno ,  Hisashi Suwa ,  Seizi Sato

IPC分类号： H04N5/65 ,  H04N5/64 ,  H04N5/72

CPC分类号： H04N7/0122 ,  H04N5/65

摘要： A screen cover opening device for a television receiver is provided with a screen cover openably closing left and right side portions or upper and lower side portions of a screen adapted for electively displaying plural different aspect ratio images. Two vertically extending rolls 5a, 5b are arranged at outwardly shifted positions from left and right lateral sideswrapped around of the screen 2 and an endless cover sheet 3 is wrapped around these rolls. Two windows 4a, 4b are formed at longitudinally spaced apart positions of the cover sheet 3. The rolls are rotated to run the cover sheet to change overlap of the two windows to change the transverse width W that may be viewed through overlapped portions of the two windows.

摘要翻译： 一种用于电视接收机的屏幕盖打开装置设置有可打开地闭合左右侧部分的屏幕盖或适于选择性地显示多个不同宽高比图像的屏幕的上侧和下侧部分。 两个垂直延伸的辊5a，5b布置在从屏幕2周围的左右侧面向外移位的位置处，并且环形覆盖片3缠绕在这些辊上。 两个窗口4a，4b形成在覆盖片3的纵向间隔开的位置处。辊旋转以运行覆盖片，以改变两个窗口的重叠，以改变横向宽度W，其可以通过两个窗口的重叠部分观察 视窗。