发明授权
- 专利标题： Video disk recording apparatus wherein the frequency of the carrier is lowered and the frequency range of the information signal is narrowed when a recording laser beam is positioned at an extended recording area of the disk
- 专利标题（中）： 视频盘记录装置，其中当记录激光束位于磁盘的扩展记录区域时，载波的频率降低并且信息信号的频率范围变窄
-
申请号： US629245申请日： 1990-12-18
-
公开(公告)号： US5379119A公开(公告)日： 1995-01-03
- 发明人: Hideo Owa
- 申请人： Hideo Owa
- 申请人地址： JPX Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX1-339235 19891227
- 主分类号： H04N9/86
- IPC分类号： H04N9/86 ; G11B7/00 ; G11B7/004 ; G11B20/02 ; G11B20/06 ; H04N5/85 ; H04N9/82 ; H04N9/79
摘要：
An apparatus for recording an information signal on a disk by a laser beam is comprises of a rotating device for driving the disk with a constant angular velocity, a modulator for frequency-modulating the information signal in a predetermined manner, a control circuit for controlling the laser beam by the frequency-modulated information signal, and a record circuit for changing the characteristics of the information signal in accordance with the position of the laser beam on the disk.
公开/授权文献
- US5672619A Fungicidal active compound combinations 公开/授权日：1997-09-30
信息查询
