Invention Grant
US08374746B2 Memory management in event recording systems 有权
事件记录系统中的内存管理

  • Patent Title: Memory management in event recording systems
  • Patent Title (中): 事件记录系统中的内存管理
  • Application No.: US12096592
    Application Date: 2006-12-07
  • Publication No.: US08374746B2
    Publication Date: 2013-02-12
  • Inventor: James Plante
  • Applicant: James Plante
  • Applicant Address: US CA San Diego
  • Assignee: Smartdrive Systems, Inc.
  • Current Assignee: Smartdrive Systems, Inc.
  • Current Assignee Address: US CA San Diego
  • Agency: Jones Day
  • Agent Peter Thurlow; Jaime D. Choi
  • International Application: PCT/US2006/047055 WO 20061207
  • International Announcement: WO2007/067775 WO 20070614
  • Main IPC: G06F7/00
  • IPC: G06F7/00
Memory management in event recording systems
Abstract:
A vehicle event recorder is provided that includes a camera for capturing a video as discrete image frames, and that further includes a managed loop memory and a management system for generating a virtual ‘timeline dilation’ effect. To overcome size limits in the buffer memory of the video event recorder, the maximum time extension of a video series is increased by enabling a reduction in temporal resolution in exchange for an increase in the temporal extension. Memory cells are overwritten in an ‘interleaved’ fashion to produce a reduced frame rate for the recording of certain time periods connected to an event moment. In time periods furthest from the event moment, the resulting frame rate is minimized while in time periods closest to the event moment, the resulting frame rate is maximized.
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