Method and apparatus for recording high-speed input data into a matrix of memory devices

US7802152B2 · kind B2 · utility

Assignee

• Thomson Licensing · FR

Inventors

• Thomas Brune · Hannover, DE
• Jens Peter Wittenburg · Altwarmbüchen, DE

Key dates

• Filing date: Dec 4, 2006
• Grant date: Sep 21, 2010
• Expiry date: Sep 16, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G11C29/76
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

For recording or replaying in real-time digital high bandwidth video signals, e.g. HDTV, HD progressive or HD film capture signals, very fast memories are required. For storage of streaming HD video data NAND FLASH memory based systems could be used. Flash memory devices are physically accessed in a page oriented mode. According to the invention, the input data are written in a multiplexed fashion into a matrix of multiple flash devices. A list processing is performed that is as simple and fast as possible, and defect pages of flash blocks of single flash devices are addressed within the matrix architecture. When writing in a sequential manner, the data content for the current flash device page of all flash devices of the matrix is copied to a corresponding storage area in an additional memory buffer. After the current series of pages has been written without error into the flash devices, the corresponding storage area in an additional memory buffer is enabled for overwriting with following page data. In case an error occurred in the current page in one or more flash devices, the content of these current pages is kept in the additional memory buffer.