DATA RECORDING AND PLAYBACK SYSTEM AND METHOD

• US 20150172592A1
• Filed: 09/23/2014
• Published: 06/18/2015
• Est. Priority Date: 04/09/2001
• Status: Active Grant

• Current Assignee: IM52, LLC
• Original Assignee: Monitoring Technology Corporation
• Inventors: FIORE, John T., BOOK, K. Stephen, KILMER, Wayne L.
• Granted Patent: US 10,425,611 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04N 21/4331 Caching operations, e.g. of an advertisement for later insertion during playback
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/775 between a recording apparatus and a television receiver
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 9/8042 involving data reduction

Abstract

A data recording and playback system and method with a memory device adapted to receive and temporarily store input signal data as data frames with time stamps, the memory device having addresses associated thereto, and a circular storage buffer having a memory mapped file with same address space as the memory device for storing the input signal data. In one embodiment, an event controller provides an event signal associated to time of an event, and an event processor is provided that copies plurality of data frames stored in the circular storage buffer that have time stamps proximate to the time of the event. Another embodiment is adapted to allow playback of stored input signal data from the circular storage buffer without interrupting simultaneous recording of new input signal data into the circular storage buffer.

Claims

1. A data recording and playback system comprising:

a monitoring device that provides an input signal data;

a memory device adapted to receive and temporarily store the input signal data from the monitoring device as data frames with time stamps, each data frame including one time stamp and the memory device having addresses associated thereto, and the data frames having a dynamic frame size; and

a circular storage buffer having a memory mapped file with same address space as the memory device, the circular storage buffer being adapted to receive the temporarily stored input signal data from the memory device, and to store the input signal data in the memory mapped file.