Creating a DVD compliant stream directly from encoder hardware
A system and method are disclosed for efficiently generating a DVD compliant stream directly from an MPEG encoder. In a preferred embodiment of the invention, this is achieved by providing encoder microcode for generating a DVD standard protocol compliant stream directly from an analog signal according to DVD industry standards, such as DVD VOB. In this embodiment, the system and method of the present invention advantageously provide an encoder with the ability to generate a DVD VOB compliant stream without third party software intervention thus allowing for a more efficient and faster process for generating a DVD VOB compliant stream and for creating DVD disks from an analog source in real time. The present invention may also flexibly determine whether to output an MPEG compliant bit stream or a DVD VOB compliant stream or both.
1 . A method for executing microcode instructions on an encoder for generating a DVD compliant stream directly from the encoder, the method comprising the steps of:
providing the encoder with an opcode indicating instructions for generating a DVD compliant stream;
providing the encoder with input data;
performing a DVD stream generating process on the input data to create a DVD compliant stream output; and
outputting the DVD compliant stream output from the encoder.
2 . The method of claim 1 wherein the input data is a digital video signal.
3 . The method of claim 1 wherein the method is used in an MPEG encoder.
4 . The method of claim 1 further comprising the steps of:
performing an MPEG encoding process on the input data to create an MPEG bitstream; and
selecting whether to output from the encoder the DVD compliant stream or the MPEG bitstream.
5 . The method of claim 1 wherein the DVD compliant stream output is stored in an output register until further processing.
6 . The method of claim 1 wherein the DVD compliant stream outputted from the encoder is used to create a DVD disk.
7 . A method of operating a video encoder comprising:
in response to microcode instructions executable by the encoder, generating a DVD compliant stream to be outputted by the encoder.
8 . The method of claim 7 wherein the instructions receive as input a digital video signal.
9 . The method of claim 7 wherein the encoder receives instructions to generate an MPEG bitstream and instructions to select as output from the encoder either the DVD compliant stream or the MPEG bitstream.
10 . The method of claim 7 wherein the encoder is a BCM7040 or BCM7041 from Broadcom.
11 . The method of claim 7 wherein the DVD compliant stream output is stored in an output register until further processing.
12 . The method of claim 7 wherein the DVD compliant stream outputted from the encoder is used to create a DVD disk.
13 . An encoder comprising:
a plurality of registers; and
at least one execution unit configured to generate a DVD compliant stream in response to microcode instructions executable by the encoder.
14 . The encoder of claim 13 wherein the encoder receives as input an digital video signal.
15 . The encoder of claim 13 further comprising a selection unit for selecting as output either the DVD compliant stream or an MPEG bitstream.
16 . The encoder of claim 13 wherein the encoder is Broadcom's BCM7040 or BCM7041.
17 . The encoder of claim 13 wherein the DVD compliant stream output is stored in an output register until further processing.
18 . The encoder of claim 13 wherein the DVD compliant stream outputted from the encoder is used to create a DVD disk.
19 . An encoder for processing a digital video signal comprising:
a compressor for compressing the digital video signal into a MPEG compliant bit stream; and
a DVD writer engine for translating the MPEG compliant bit stream into a DVD VOB compliant stream; and
a multiplexer for determining whether to output the MPEG compliant bit stream or the DVD VOB compliant stream.
20 . The encoder of claim 19 wherein the encoder is Broadcom's BCM7040 or BCM7041.
21 . The encoder of claim 19 wherein the DVD compliant stream output is stored in an output register until further processing.
22 . The encoder of claim 19 wherein the DVD compliant stream outputted from the encoder is used to create a DVD disk.