Digital recording device capable of converting and recording resolution of image data of digital television broadcast and recording method therefor
AssigneeFunai Electric Co., Ltd.
InventorsMasanori Kawai, Toshihiro Takagi, Manabu Yamamoto
Life of this patent
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Abstract
In a digital recording device, image data recorded in a recording portion has its resolution decreased to be recorded in the recording portion when it is determined that the digital recording device is not being used. In other words, when it is determined that a power switch is turned off, a system portion allows an MPEG decoder to convert a bit stream of a program data at high definition recorded in a hard disk drive to image data at low resolution and allows an MPEG encoder to convert the converted image data at low resolution to a bit stream to be stored in the hard disk drive.
Claims10
A digital recording device receiving and recording a digital television broadcast at a resolution higher than a prescribed value, comprising:
- a recording portion recording said received digital television broadcast;
- an MPEG decoder connected to said recording portion for converting image data such that a resolution of image data of the digital television broadcast is decreased;
- an MPEG encoder converting image data converted by said MPEG decoder to an MPEG signal;
- a power switch being turned on to supply power to said digital recording device to enable a recording operation of said recording portion and being turned off to disable said digital recording device for a recording operation of said recording portion;
- a power switch detecting portion detecting that said power switch is turned off with said digital recording device being supplied with power;
- a resolution detecting portion detecting a resolution of recorded data recorded in said recording portion;
- and
- a control portion controlling a conversion of data to allow said MPEG decoder and said MPEG encoder to operate to decrease a resolution of image data having a resolution higher than said prescribed value that is recorded in said recording portion, when said resolution detecting portion determines that image data having a resolution higher than said prescribed value is included in said recording portion and said power switch detecting portion determines that said power switch is turned off.
A digital recording device receiving and recording a digital television broadcast at a resolution higher than a prescribed value, comprising:
- a recording portion recording said received digital television broadcast;
- a resolution converting portion connected to said recording portion for converting image data of the digital television broadcast to have a decreased resolution;
- a determination portion determining whether a user is using said digital recording device;
- and
- a control portion allowing said resolution converting portion to operate to enable said recording portion to record the image data having a resolution decreased by said resolution converting portion when said determination portion determines that said digital recording device is not being used.
A recording method for a digital recording device receiving and recording a digital television broadcast at high definition, comprising the steps of:
- determining whether a user is using said digital recording device;
- determining whether image data having a resolution higher than a prescribed value is included in recorded image data when it is determined that said digital recording device is supplied with power and is not used;
- and
- converting and recording the image data into said recording device such that a resolution of the image data having a resolution higher than a prescribed value is decreased, when it is determined that image data having a resolution higher than a prescribed value is included.
Dependencies are inferred from the claim text.