Recording apparatus
View Patent ↗In a recording apparatus (camcorders, optical disc recorders, etc.), the operator presses down priority designating buttons for designating priorities when recording input image data. An additional information generating section records and holds, in a storage section, additional information indicating priorities of data to be recorded (e.g., “low”, “intermediate”, “high”, or “highest”) which are set, depending on what priority designating button has been pressed down. If recordable remaining space in the storage section detected by the remaining amount detecting section falls below a predetermined value before the start of or during recording of data, a control section overwrites regions in order of priority of data which is stored therein, the lowest first, with data which is about to be recorded or is being recorded, based on the additional information generated by the additional information generating section. Therefore, even if free space in the storage medium becomes small, a decisive moment can be recoded, for example.
1. A recording apparatus comprising:
a storage section for recording and holding any data and additional information corresponding to the data;
a remaining amount detecting section for detecting remaining recordable space in the storage section;
a control section for operating the data recorded and held in the storage section; and
an additional information generating section for generating the additional information to be recorded and held in the storage section, wherein:
the control section sets priorities for the data recorded and held in the storage section based on the additional information generated by the additional information generating section irrespective of the order in which the data were recorded and held into the storage section,
the remaining amount detecting section is configured to detect the remaining recordable space before the start of recording of data into the storage section,
the remaining amount detecting section is further configured to detect the remaining recordable space during recording of the data into the storage section, and
if the detected remaining recordable space is below a predetermined value, the control section deletes, or compresses a data size of, data having a lowest priority based on the priorities.
2. The recording apparatus of claim 1 , further comprising:
one or more priority buttons each indicating a priority,
wherein, when an operator presses the one or more priority buttons, the additional information generating section generates additional information indicating priorities corresponding thereto.
3. The recording apparatus of claim 1 , further comprising:
a program information obtaining section for analyzing information about the data to obtain keywords,
wherein the additional information generating section handles, as additional information, the keyword obtained by the program information obtaining section, and
the control section sets priorities for the data based on whether or not the keywords obtained by the program information obtaining section match respective predetermined keywords.
4. The recording apparatus of claim 1 , further comprising:
a program information obtaining section for analyzing information about the data to obtain rating points of TV programs,
wherein the control section sets higher priorities for the data having higher rating points of the TV programs, and overwrites a region in which data having a lowest priority is stored, with data which is about to be recorded or is being currently recorded.
5. The recording apparatus of claim 1 , further comprising:
a program information obtaining section for analyzing information about the data to obtain game results of sports programs,
wherein the additional information generating section handles, as additional information, the game results of the sports programs obtained by the program information obtaining section, and
the control section sets priorities for the data based on whether or not the game results of the sports programs match a predetermined game result.
6. The recording apparatus of claim 1 , further comprising:
a sound level detecting section for detecting sound levels of each piece of the data,
wherein the additional information generating section detects a highest one of the sound levels detected by the sound level detecting section and generates the highest sound level as additional information.
7. The recording apparatus of claim 6 , wherein the sound level detecting section, when data is recorded into the storage section, detects sound levels of the data.
8. The recording apparatus of claim 6 , wherein the sound level detecting section, when data is read from the storage section, detects sound levels of the data.
9. The recording apparatus of claim 6 , wherein the additional information generating section determines and generates, as additional information, priorities for the data using one or a plurality of predetermined sound level thresholds based on the highest sound levels of the data detected by the sound level detecting section.
10. The recording apparatus of claim 9 , wherein in the additional information generating section, the sound level thresholds for determining priorities can be externally set.
11. The recording apparatus of claim 6 , wherein the additional information generating section further measures and generates, as additional information, durations for which the sound levels detected by the sound level detecting section continue to be higher than or equal to a predetermined sound level.
12. The recording apparatus of claim 11 , wherein the additional information generating section determines and generates, as additional information, priorities based on the sound level durations using one or a plurality of predetermined duration thresholds.
13. The recording apparatus of claim 11 , wherein in the additional information generating section, the sound level thresholds for measuring durations can be externally set.
14. The recording apparatus of claim 12 , wherein in the additional information generating section, the one or plurality of durations for determining priorities can be externally set.
15. The recording apparatus of claim 1 , wherein the additional information generating section generates additional information indicating copy histories of the data or additional information indicating whether or not the data have been playbacked.
16. The recording apparatus of claim 1 , wherein
the data recorded and held in the storage section is data encoded before the recording and holding, and
during the data size compression, the control section re-encodes the encoded data recorded and held in the storage section so that the resultant data has a smaller bit rate than that of the encoded data recorded and held in the storage section.
17. The recording apparatus of claim 1 , wherein
the data recorded and held in the storage section is data encoded before the recording and holding, and
during the data size compression, the control section re-encodes the encoded data recorded and held in the storage section so that the encoded data recorded and held in the storage section is quantized using a larger quantization value than that of the encoded data recorded and held in the storage section.
18. The recording apparatus of claim 1 , wherein
the data recorded and held in the storage section is data encoded before the recording and holding, and
during the data size compression, the control section re-encodes the encoded data recorded and held in the storage section so that the resultant data has a larger keyframe interval than that of the encoded data recorded and held in the storage section.
19. The recording apparatus of claim 1 , wherein
the data recorded and held in the storage section is data encoded before the recording and holding, and
during the data size compression, the control section re-encodes the encoded data recorded and held in the storage section so that the resultant data has a smaller image size than that of the encoded data recorded and held in the storage section.
20. The recording apparatus of claim 1 , wherein
the data recorded and held in the storage section is data encoded before the recording and holding, and
during the data size compression, the control section re-encodes the encoded data recorded and held in the storage section using an encoding method having a higher data compression efficiency than that of the original encoding method.