Recording/reproducing system
AssigneeNEC Corporation
InventorHideki Sawada
Life of this patent
Estimating the term…
Abstract
An analog image signal from an input terminal 101is converted in an ADC 102 to digital data, then stored in a frame memory 103, then subjected to compression processing in a compression processing module 104, and then recorded in a recorder 105. The compressed data recorded in the recorder 105 is read out, then subjected to decompression processing in a decompression processing module 106, and then stored in a frame memory 107. The operation of the compression processing module 104 is controlled by a frame rate controller 110. Thus, the problem of frame data drop-out or reproducing processing delay occurrence when it becomes unable to obtain full frame real time frame capturing, real time compression and real time decompression due to CPU performance insufficiency is solved.
Claims8
A real time recording/reproducing system for converting an analog image signal in an analog-to-digital converter (ADC) to digital data, recording the digital data in a recorder, reading out the digital data recorded in the recorder and converting the read-out digital data in a digital-to-analog converter (DAC) to analog data to be outputted, the real time recording/reproducing system comprising:
- a first frame memory for storing the output of the ADC;
- a compression processing module for compressing the output of the first frame memory;
- a decompression processing module for decompressing the digital data read out from the recorder;
- a second frame memory for storing the output of the decompression processing module and outputting the stored data to the DAC;
- and
- a frame rate controller for controlling the compression processing module.
A real time recording/reproducing system for converting an analog image signal in an analog-to-digital converter (ADC) to digital data, recording the digital data in a recorder, reading out the digital data recorded in the recorder and converting the read-out digital data in a digital-to-analog converter (DAC) to analog data to be outputted, the real time recording/reproducing system comprising:
- a first frame memory for storing the output of the ADC;
- a compression processing module for compressing the output of the first frame memory;
- a decompression processing module for decompressing the digital data read out from the recorder;
- a second frame memory for storing the output of the decompression processing module and outputting the stored data to the DAC;
- and
- a frame rate controller for controlling the frame rate of the compression processing module to be constant by executing a frame interpolating processing.
A real time recording/reproducing system for converting an analog image signal in an analog-to-digital converter (ADC) to digital data, recording the digital data in a recorder, reading out the digital data recorded in the recorder and converting the read-out digital data in a digital-to-analog converter (DAC) to analog data to be outputted, the real time recording/reproducing system comprising:
- a first frame memory for storing the output of the ADC;
- a compression processing module for compressing the output of the first frame memory;
- a decompression processing module for decompressing the digital data read out from the recorder and executing a frame skipping processing when it becomes unable to execute full frame real time decompression processing;
- a second frame memory for storing the output of the decompression processing module and outputting the stored data to the DAC;
- and
- a frame rate controller for controlling the compression processing module.
A real time recording/reproducing system for recording a digital data in a recorder obtained by converting an analog image signal, and reproducing the recorded the digital data through in the analog data fromat comprising steps of:
- storing the digital data in a first frame memory;
- compressing the output of the first frame memory;
- decompressing the digital data read out from the recorder;
- storing the decompressed data in a second memory;
- controlling the frame rate of the compressed data to be constant by executing a frame interpolating processing;
- and
- executing a frame skipping processing when it becomes unable to execute full frame real time decompression processing.
Dependencies are inferred from the claim text.