Method of processing data, and photographing apparatus using the method
View Patent ↗Disclosed is a method of data processing in an apparatus such as a photographing apparatus. The method includes: determining a file format to record data among a plurality of file formats comprising a dedicated file format and a common file format; recording the data in a file of the common file format and generating an auxiliary file corresponding to the file of the common file format, if the common file format is determined; and recording, in the auxiliary file, information about the dedicated file format and recording information for reading the data in the file of the common file format.
1. A method of data processing in a surveillance camera which comprises an image sensor and a hardware signal processor, the method comprising:
controlling the hardware signal processor to determine a file format, in which data output from the image sensor is to be recorded in a file, among a plurality of file formats comprising a dedicated file format and a common file format; and
in response to the file format being determined as the common file format, controlling the hardware signal processor to record the data in a file of the common file format, generate an auxiliary file of the dedicated file format, and record, in the auxiliary file, information about the dedicated file format and recording information required for reading the data recorded in the file of the common file format, the recording information comprising an index value and an offset position value of the data in the file of the common file format; and
controlling the hardware signal processor to extract a data unit of the data recorded in the file of the common file format by using the recording information in the auxiliary file of the dedicated file format, extract the information recorded in the auxiliary file of the dedicated file format, and stream the file by alternately transmitting the data unit and the information through a network to a receiver operating according to a dedicated program corresponding to the dedicated file format,
wherein the file of the common file format and the auxiliary file of the dedicated file format are recorded in a memory of the surveillance camera which obtains the data, and
wherein the dedicated file format is a format where frame headers and the data are alternately disposed, each of the frame headers containing same information.
2. The method of claim 1 , further comprising compressing the data by encoding the data before the data is recorded in the file of the common file format.
3. The method of claim 2 , wherein the dedicated file format is a file format having a file extension “dat” for the file, and
wherein the common file format is one of Audio Video Interleaved (AVI), MatrosKa Video (MKV), Moving Picture Experts Group-4 (MPEG-4), Window Media Video (WMV) and MPEG-3.
4. The method of claim 1 , further comprising controlling the hardware signal processor to record the data in a file of the dedicated file format if the dedicated file format is determined in the determining the file format.
5. The method of claim 4 , wherein the controlling the hardware signal processor to stream the file comprises controlling the hardware signal processor to:
read and transmit the data and the frame header in the file of the dedicated file format from the surveillance camera to the receiver through a network,
wherein the dedicated file format is recorded in a memory of the surveillance camera which obtains the data.
6. The method of claim 5 , wherein the dedicated file format is a file format having a file extension “dat” for the file, and
wherein the common file format is one of Audio Video Interleaved (AVI), MatrosKa Video (MKV), Moving Picture Experts Group-4 (MPEG-4), Window Media Video (WMV) and MPEG-3.
7. A surveillance camera comprising:
an image sensor configured to output data corresponding to at least a captured image; and
a hardware signal processor configured to determine a file format, in which the data is to be recorded in a file, among a plurality of file formats comprising a dedicated file format and a common file format,
wherein, in response to the file format being determined as the common file format, the hardware signal processor is configured to record the data in a file of the common file format, generate an auxiliary file of the dedicated file format, and record, in the auxiliary file, information about the dedicated file format and recording information required for reading the data recorded in the file of the common file format, the recording information comprising an index value and an offset position value of the data in the file of the common file format, and
wherein the hardware signal processor is further configured to extract a data unit of the data recorded in the file of the common file format by using the recording information in the auxiliary file of the dedicated file format, extract the information recorded in the auxiliary file of the dedicated file format, and stream the file by alternately transmitting the data unit and the information through a network to a receiver operating according to a dedicated program corresponding to the dedicated file format,
wherein the file of the common file format and the auxiliary file of the dedicated file format are recorded in a memory of the surveillance camera which obtains the data, and
wherein the dedicated file format is a format where frame headers and the data are alternately disposed, each of the frame headers containing same information.
8. The surveillance camera claim 7 , wherein the hardware signal processor is further configured to compress the data by encoding the data before the data is recorded in the file of the common file format.
9. The surveillance camera of claim 8 , wherein the dedicated file format is a file format having a file extension “dat” for the file, and
wherein the common file format is one of Audio Video Interleaved (AVI), MatrosKa Video (MKV), Moving Picture Experts Group-4 (MPEG-4), Window Media Video (WMV) and MPEG-3.
10. The surveillance camera of claim 7 , wherein the hardware signal processor is further configured to record the data in a file of the dedicated file format if the dedicated file format is determined in the determining the file format.
11. The surveillance camera of claim 10 , wherein the hardware signal processor is further configured to read and transmit the data and the frame header in the file of the dedicated file format from the surveillance camera to the receiver through a network in a streaming scheme.
12. The surveillance camera of claim 11 , wherein the dedicated file format is a file format having a file extension “dat” for the file, and
wherein the common file format is one of Audio Video Interleaved (AVI), MatrosKa Video (MKV), Moving Picture Experts Group-4 (MPEG-4), Window Media Video (WMV) and MPEG-3.
13. The method of claim 1 , wherein the information about the dedicated file format includes:
data indicating a first position of the frame;
an index value of a moving-image file of the dedicated file format;
a codec format of moving-image data;
an offset position value of the moving-image file of the dedicated file format; and
a total size value of the moving-image data.
14. The surveillance camera of claim 7 , wherein the information about the dedicated file format includes:
data indicating a first position of the frame;
an index value of a moving-image file of the dedicated file format;
a codec format of moving-image data;
an offset position value of the moving-image file of the dedicated file format; and
a total size value of the moving-image data.