Apparatus for recording signals on disk recording medium

Abstract

A recording apparatus of this invention detects the state of management information, which pertains to a recording address of an image signal, and which is reproduced from a disk-like recording medium having a first area for the image signal and a second area for the management information. On the basis of the detection result, management data is reproduced from the first area of the disk-like recording medium. On the basis of the management data reproduced from the first area, the management information reproduced from the second area is modified. A modify unit records the modified management information in the second area.

What is claimed is: 
     
         1 . A recording apparatus comprising:
 an obtaining unit configured to obtain motion image data;   a recording unit configured to record on a recording medium the motion image data obtained by the obtaining unit and management information relating to recording address information of data recorded on the recording medium;   a detection unit configured to detect a change between images of two frames of the motion image data during recording of the motion image data by the recording unit; and   a control unit configured to control the recording unit to record, in accordance with a detection result of the detection unit, on the recording medium the management information relating to recording address information of the motion image data.   
     
     
         2 . The recording apparatus according to  claim 1 , further comprising:
 a reproducing unit configured to reproduce the management information from the recording medium; and   a memory configured to store the management information reproduced by the reproducing unit,   wherein the control unit updates the management information stored in the memory in accordance with recording of the motion image data, and   wherein the control unit controls the recording unit, in accordance with a detection result of the detection unit, to read the updated management information from the memory and record on the recording medium the read updated management information.   
     
     
         3 . The recording apparatus according to  claim 2 , wherein the reproducing unit reproduces the motion image data from the recording medium, and
 wherein the management information is used for reproducing the motion image data by the reproducing unit.   
     
     
         4 . The recording apparatus according to  claim 1 , further comprising:
 an operation unit configured to be used for outputting a recording start instruction and a recording stop instruction.   
     
     
         5 . The recording apparatus according to  claim 1 , wherein the detection unit includes a unit for obtaining a difference between the two frames of the motion image data and a unit for comparing the difference with a threshold. 
     
     
         6 . A recording method comprising:
 obtaining motion image data;   recording on a recording medium the obtained motion image data and management information relating to recording address information of data recorded on the recording medium;   detecting a change between images of two frames of the motion image data during recording of the motion image data; and   controlling to record, in accordance with a detection result of the detection, on the recording medium the management information relating to recording address information of the motion image data.