Data processing apparatus

Abstract

A data processing apparatus according to the present invention is capable of writing video and/or audio data to a storage medium. The data processing apparatus includes: a power controller for controlling powering on or off; a signal processing circuit for generating data; and a drive section for writing the generated data to the storage medium. In response to a powering-off instruction, the power controller stops supplying power to the drive section but continues to supply power to the signal processing circuit and the power controller itself. Since hardware elements remain energized, they do not need to perform initialization operations when the apparatus is powered on. Similarly, corresponding software elements are also in an operable state, and therefore do not need to perform initialization processes. Therefore, the signal processing circuit can immediately start processing thereafter.

1 . A data processing apparatus comprising:
 a power controller for controlling powering on or off;   a drive section for reading at least one of video and audio data from a storage medium;   a signal processing circuit for processing at least one of the video and audio data; and   wherein, in response to a powering-off instruction, the power controller stops supplying power to the drive section but continues to supply power to the signal processing circuit and the power controller itself, and   the data processing apparatus further comprises a receiving section for receiving a signal containing at least one of a video signal and an audio signal;   the signal processing circuit generates the data based on the received signal; and   in response the powering-off instruction, the power controller stops supplying power to the receiving section.   
     
     
         2 . The data processing apparatus of  claim 1 , wherein,
 the data processing apparatus further comprises a data storing section; and   before the power controller stops supplying power to the drive section, the signal processing circuit executes at least one operation selected from the group consisting of: determination of a type of the storage medium; determination of whether writing to the storage medium is possible or not; determination of a remaining capacity of the storage medium; and acquisition of a control parameter necessary for the drive section to perform a data write operation, and the signal processing circuit writes information indicating results of the operation to the data storing section.   
     
     
         3 . The data processing apparatus of  claim 2 , wherein, in response to the powering-off instruction, the power controller continues to supply power to the data storing section. 
     
     
         4 . The data processing apparatus of  claim 1 , wherein,
 the signal processing circuit comprises:
 a system controller for controlling an operation of the entire data processing apparatus; 
 an interface for receiving the signal containing at least one of video signal and the audio signal; 
 a recording processor for generating the data based on the received signal; and 
 a recording controller for outputting the generated data to the drive section, and instructing the drive section to write the generated data, and 
   in response to the powering-off instruction, the power controller continues to supply power to at least the system controller.   
     
     
         5 . The data processing apparatus of  claim 1 , wherein, based on an instruction from a user, the power controller chooses whether or not to continue to supply power to the signal processing circuit. 
     
     
         6 . A data processing apparatus comprising:
 a power controller for controlling powering on or off;   a drive section for reading at least one of video and audio data from a storage medium;   a signal processing circuit for processing at least one of the video and audio data; and   wherein, in response to a powering-off instruction, the power controller stops supplying power to the drive section but continues to supply power to at least one of the signal processing circuit and the power controller itself, and   the data processing apparatus further comprises a receiving section for receiving a signal containing at least one of a video signal and an audio signal;   the signal processing circuit generates the data based on the received signal; and   in response the powering-off instruction, the power controller stops supplying power to the receiving section.