Mulitmedia data processing apparatus with reduced buffer size
A multimedia data processing apparatus with reduced buffer size includes an accessing unit and a data processing module. The accessing unit has a plurality of buffers therein. The data processing module includes a processing unit and a real-time buffer. The processing unit processes the data temporarily stored in the accessing unit and the real-time buffer. By adding the real-time buffer, the size of the buffer in the accessing unit and the maximum bandwidth requirement can be reduced thereby increasing the system performance.
1. A multimedia data processing apparatus, comprising:
an accessing unit further comprising a plurality of buffers therein for temporarily storing first data; and
a data processing module coupled to the accessing unit, including:
a processing unit for processing the first data and generating second data; and
a real-time buffer, coupled to the processing unit, for storing the second data;
wherein the amount of data stored in the real-time buffer is non-empty when the multimedia data processing apparatus is under data transmitting status.
2. The multimedia data processing apparatus as claimed in claim 1 , wherein the first data includes color, luminance, subtitle, menu or cursor data.
3. The multimedia data processing apparatus as claimed in claim 1 , wherein the second data are real-time image data.
4. The multimedia data processing apparatus as claimed in claim 1 , wherein the processing unit is configured to perform blending, decoding, scaling or de-interlacing.
5. The multimedia data processing apparatus as claimed in claim 1 , wherein the second data stored in the real-time buffer is configured to be output to a real-time device.
6. The multimedia data processing apparatus as claimed in claim 5 , wherein the real-time device is a data sink.
7. The multimedia data processing apparatus as claimed in claim 1 , wherein the amount of the second data is less than that of the first data.
8. The multimedia data processing apparatus as claimed in claim 1 , wherein the amount of data stored in at least one of the plurality of buffers is configured to be temporarily empty when the real-time buffer is non-empty.
9. A multimedia data processing apparatus, comprising:
a data processing module, further comprising:
a real-time buffer for temporarily storing first data;
a processing unit, coupled to the real-time buffer, for processing the first data and generating second data; and
an accessing unit, coupled to the data processing module, comprising a plurality of buffers therein for temporarily storing the second data;
wherein the amount of data stored in the real-time buffer is non-full when the multimedia data processing apparatus is under data transmitting status.
10. The multimedia data processing apparatus as claimed in claim 9 , wherein the first data are real-time image data.
11. The multimedia data processing apparatus as claimed in claim 9 , wherein the second data includes color or luminance data.
12. The multimedia data processing apparatus as claimed in claim 9 , wherein the processing unit is configured to perform encoding or scaling.
13. The multimedia data processing apparatus as claimed in claim 9 , further comprising a real-time device configured to forward the first data to the real-time buffer.
14. The multimedia data processing apparatus as claimed in claim 13 , wherein the real-time device is a data source.
15. The multimedia data processing apparatus as claimed in claim 9 , wherein the amount of the first data is less than that of the second data.
16. The multimedia data processing apparatus as claimed in claim 9 , wherein the amount of data stored in at least one of the plurality of buffers is configured to be temporarily full when the real-time buffer is non-full.
17. A multimedia data processing apparatus, comprising:
an accessing unit comprising a plurality of buffers therein for temporarily storing first data; and
a data processing module coupled to the accessing unit, further comprising:
a processing unit for processing the first data and generating second data; and
a real-time buffer, coupled to the processing unit, for storing the second data;
wherein an amount of the second data is less than that of the first data.
18. The multimedia data processing apparatus as claimed in claim 17 , wherein the first data includes color, luminance, subtitle, menu or cursor data.
19. The multimedia data processing apparatus as claimed in claim 17 , wherein the second data are real-time image data.
20. The multimedia data processing apparatus as claimed in claim 17 , wherein the processing unit is configured to perform blending, decoding, scaling or de-interlacing.
21. The multimedia data processing apparatus as claimed in claim 17 , wherein the second data stored in the real-time buffer is configured to be output to a real-time device.
22. The multimedia data processing apparatus as claimed in claim 21 , wherein the real-time device is a data sink.