Dictaphone Corporation.

Nice Systems Ltd.

John Henits

Robert B Swick

Constantine P Messologitis

Daniel F Daly

Salvatore J Morlando

Keith K Leung

Yanyan Leung

Christopher S Goane

Keith K W Leung

A modular digital recording system that records audio on digital audio tapes provides redundancy and the ability to record audio while listening to portions of audio that had been recorded on the DAT. The system uses a hard disc that receives audio for recording simultaneously with the DAT. When one wishes to listen to a voice message, one can activate the hard disc to listen to a particular message while the DAT is still recording. The system is modular so that the capacity can be expanded as required. The system includes a LAN adapter so that the system can providing networking access.

Modular digital recording logger

A multi-stage data logging system comprising a telecommunications stage for receiving, processing, and compressing data from one or more input channels, a recorder stage for storing said data to a memory device, a distribution stage for retrieving said stored data and distributing said data to one or more output channels, and a plurality of interface paths linking said three stages to one another. Different stages of the system can be located wide distances apart and the interface paths linking the three stages can be automatically switched to achieve fault tolerance of the system.

System and method for multi-stage data logging

A modular digital recording system that records audio on digital audio tapes provides redundancy and the ability to record audio while listening to portions of audio that had been recorded on the DAT. The system uses a hard disc that receives audio for recording simultaneously with the DAT. When one wishes to listen to a voice message, one can activate the hard disc to listen to a particular message while the DAT is still recording. The system is modular so that the capacity can be expanded as required. The system includes a LAN adapter so that the system can provide networking access.

An apparatus and method have been conceived for using a digital audio tape (DAT) in an audio logger for the purposes of storing and retrieving audio data. This is accomplished in a manner such that the data is received and recorded in a time related manner. Provision is made for accommodating the transfer drive rate of the DAT through use of a buffer between the signal processor of the logger and the DAT. In addition, the method of storing the data results in greater use of the available space on the DAT as the DAT tape only writes for those periods when audio is present on a channel.

Method and a system for storing audio

A scheme has been devised for retrieving audio for a selected time from a digital audio tape that has been used in a device such as a digital logger wherein audio is recorded on a intermittent basis. A record session table is created on the digital audio tape that correlates the time of recording sessions to of the location on the DAT for a selected time of recording.

Method of retrieving messages at selected times from a digital audio tape

Apparatus and method for storing and retrieving audio data simultaneously. A digital audio logger is provided with a digital audio tape (DAT) for permanent storage of audio data and with a random access storage (RAS) device that provides fast retrieval of audio. Both the DAT and RAS devices have audio written from a buffer that initially stores audio data temporarily. Two pointers are provided for the RAS device. Because of the randomness characteristic of the RAS device, data can be retrieved rapidly with a first one of the pointers and for this reason has advantages in fast retrieval. The RAS device communicates with a supervisor whereby data can be retrieved therefrom through the first pointer while the RAS device is receiving data from the buffer through the second pointer.

Endless loop voice data storage and retrievable apparatus and method

A scheme has been devised for retrieving audio from a digital audio tape (DAT) that has been used in a device such as a digital audio logger wherein audio is recorded on a intermittent basis. An audio bit map is created on the DAT that represents a record of activity with a '1' bit representing audio and a '0' bit representing absence of audio. The channels of the logger can be searched for a next message or previous message. A predetermined sequence of '1's' and '0's' are used in the search for identifying a message.

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Bethel, CT, United States of America

John Henits