Edit system, edit control device, and edit control method

• US 7,305,040 B1
• Filed: 01/19/1999
• Issued: 12/04/2007
• Est. Priority Date: 01/19/1998
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Yoshinari, Hiromi, Murakami, Yoshihiro
• Primary Examiner(s): BURD, KEVIN MICHAEL
• Application Number:
  US09/381,190
• Time in Patent Office: 3,241 Days
• Field of Search: 375/259, 375/316, 375/211, 375/340, 375/147, 348/500, 348/423.1
• US Class Current: 375/259
• CPC Class Codes: G11B 2220/41 Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
• CPC Class Codes: G11B 27/031 Electronic editing of digitised analogue information signals, e.g. audio or video signals
• CPC Class Codes: G11B 27/036 Insert-editing
• CPC Class Codes: H04N 21/23424 involving splicing one content stream with another content stream, e.g. for inserting or substituting an advertisement
• CPC Class Codes: H04N 21/44016 involving splicing one content stream with another content stream, e.g. for substituting a video clip

Abstract

A splicer/transcoder 21 interfaces with a material archiver/server using a stream. The splicer/transcoder 21 interfaces with an editor and switcher 22 using a base band signal. In a predetermined region including at least an edit point, a transcoding process is performed. In an input stream, two programs to be edited have been multiplexed. The editor and switcher 22 receives base band signals Sa and Sb of which respective programs have been encoded. As with a conventional editing device, the editor and switcher 22 edits the base band signals and returns the edited result as a base band signal Sc to the splicer/transcoder 21. The splicer/transcoder 21 re-encodes the base band signal Sc into an output stream using codec information obtained in the decoding process.

Claims

1. An editing apparatus, comprising:

first decoding means for decoding a first encoded bit stream to generate a first base band signal;

second decoding means for decoding a second encoded bit stream to generate a second base band signal;

detecting means for matching phases of the first base band signal, the second base band signal, and a third base band signal, and comparing these signals to detect an edit position at which the first base band signal and the second base band signal are connected, the third base band signal being obtained by editing the first base band signal and the second base band signal;

re-encoding means for re-encoding the third base band signal to generate a third encoded bit stream; and

controlling means for controlling said re-encoding means to re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected by said detecting means to re-encode the third base band signal,

wherein the first and second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

2. The editing apparatus as set forth in claim 1, wherein said controlling means controls said re-encoding means to re-encode the third base band signal only in a predetermined period including the edit position detected by said detecting means.

3. The editing apparatus as set forth in claim 1, further comprising:

selecting means for selecting the third encoded bit stream generated by said re-encoding means in the predetermined period including the edit position and selecting one of the first encoded bit stream and the second encoded bit stream in other than the predetermined period.

4. The editing apparatus as set forth in claim 1, wherein said detecting means matches the phases of the signals of each picture and compares the signals to detect the edit position of each picture.

5. The editing apparatus as set forth in claim 4, wherein said controlling means controls said re-encoding means to selectively re-use the first codec information and the second codec information of each picture corresponding to the edit position of each picture to re-encode the third base band signal.

6. The editing apparatus as set forth in claim 4, wherein said detecting means obtains the difference of pixels in the same spatial position of pictures of the first base band signal and the third base band signal to detect the edit position of each picture.

7. The editing apparatus as set forth in claim 4, wherein said detecting means obtains the difference of pixels in the same spatial position of pictures of the second base band signal and the third base band signal to detect the edit position of each picture.

8. The editing apparatus as set forth in claim 6, wherein said detecting means detects a picture of which the difference of the pixels is not zero as the edit position.

9. The editing apparatus as set forth in claim 7, wherein said detecting means detects a picture of which the difference of the pixels is not zero as the edit position.

10. The editing apparatus as set forth in claim 8, wherein said detecting means detects a picture having a predetermined number of pixels whose difference is not zero as the edit position.

11. The editing apparatus as set forth in claim 9, wherein said detecting means detects a picture having a predetermined number of pixels whose difference is not zero as the edit position.

12. The editing apparatus as set forth in claim 4, wherein when a picture of the first base band signal and a picture of the second base band signal are present at the edit position of each picture, said controlling means controls said re-encoding means to match the phases of the signals of each macro block, compares the signals, and selectively re-uses the first codec information and the second codec information of each macro block to re-encode the third base band signal.

13. The editing apparatus as set forth in claim 4, further comprising:

determining means for determining the picture type of a picture at the edit position detected by said detecting means,

wherein said controlling means detects a prediction objective picture at the edit position corresponding to the picture type determined by said determining means to determine whether to re-use the first codec information and the second codec information of each picture.

14. The editing apparatus as set forth in claim 13, wherein when the prediction objective picture is not present in the third base band signal, said control means does not re-use the first codec information and the second codec information.

15. The editing apparatus as set forth in claim 13, further comprising:

setting means for setting a picture flag that identifies the presence of a prediction objective picture at the edit position corresponding to the picture type determined by said determining means,

wherein said controlling means references the picture flag that is set by said setting means to determine whether to re-use the first codec information and the second codec information of each picture.

16. The editing apparatus as set forth in claim 12, further comprising:

determining means for determining the macro block type of a macro block at the edit position detected by said detecting means,

wherein said controlling means detects a prediction objective macro block at the edit position corresponding to the macro block type determined by said determining means to determine whether to re-use the first codec information and the second codec information of each macro block.

17. The editing apparatus as set forth in claim 16, further comprising:

setting means for setting a macro block flag that identifies the presence of a prediction objective macro block at the edit position corresponding to the macro block type determined by said determining means,

wherein said controlling means references the macro block flag that is set by said setting means to determine whether to re-use the first codec information and the second codec information of each macro block.

18. An editing apparatus, comprising:

first decoding means for decoding a first encoded bit stream to generate a first base band signal;

second decoding means for decoding a second encoded bit stream to generate a second base band signal;

detecting means for matching the phases of the first base band signal and a third base band signal and comparing these signals to detect an edit position at which the first base band signal and the second base band signal are connected, the third base band signal being obtained by editing the first base band signal and the second base band signal;

re-encoding means for re-encoding the third base band signal to generate a third encoded bit stream; and

controlling means for controlling said re-encoding means to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected by said detecting means to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

19. An editing apparatus, comprising:

first decoding means for decoding a first encoded bit stream to generate a first base band signal;

second decoding means for decoding a second encoded bit stream to generate a second base band signal;

detecting means for matching the phases of the second base band signal and a third base band signal and comparing these signals to detect an edit position at which the first base band signal and the second base band signal are connected, the third base band signal being obtained by editing the first base band signal and the second base band signal;

re-encoding means for re-encoding the third base band signal to generate a third encoded bit stream; and

controlling means for controlling said re-encoding means to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected by said detecting means to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

20. A re-encoding apparatus, comprising:

detecting means for matching the phases of a first base band signal, a second base band signal, and a third base band signal and comparing these signals to detect an edit position at which the first base band signal and the second base band signal are connected, the first base band signal being obtained by decoding a first encoded bit stream, the second base band signal being obtained by decoding a second encoded bit stream, the third base band signal being obtained by editing the first base band signal and the second base band signal;

re-encoding means for re-encoding the third base band signal to generate a third encoded bit stream; and

controlling means for controlling said re-encoding means to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected by said detecting means to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

21. A re-encoding apparatus, comprising:

detecting means for matching the phases of a first base band signal and a third base band signal and comparing these signals to detect an edit position at which the first base band signal and the second base band signal are connected, the first base band signal being obtained by decoding a first encoded bit stream, the third base band signal being obtained by editing the first base band signal and a second base band signal, the second base band signal being obtained by decoding a second encoded bit stream;

re-encoding means for re-encoding the third base band signal to generate a third encoded bit stream; and

controlling means for controlling said re-encoding means to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected by said detecting means to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

22. A re-encoding apparatus, comprising:

detecting means for matching the phases of a second base band signal and a third base band signal and comparing these signals to detect an edit position at which a first base band signal and the second base band signal are connected, the second base band signal being obtained by decoding a second encoded bit stream, the third base band signal being obtained by editing the first base band signal and the second base band signal, the first base band signal being obtained by decoding a first encoded bit stream;

re-encoding means for re-encoding the third base band signal to generate a third encoded bit stream; and

controlling means for controlling said re-encoding means to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected by said detecting means to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

23. A re-encoding apparatus, comprising:

re-encoding means for re-encoding a third base band signal to generate a third encoded bit stream, the third base band signal being obtained by editing a first base band signal and a second band signal, the first base band signal being obtained by decoding a first encoded bit stream, the second base band signal being obtained by decoding a second encoded bit stream; and

controlling means for controlling said re-encoding means to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to an edit position at which the first base band signal and the second base band signal are connected and that is detected by matching the phases of the first base band signal, the second base band signal, and the third base band signal and comparing these signals to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

24. A re-encoding apparatus, comprising:

re-encoding means for re-encoding a third base band signal to generate a third encoded bit stream, the third base band signal being obtained by editing a first base band signal and a second band signal, the first base band signal being obtained by decoding a first encoded bit stream, the second base band signal being obtained by decoding a second encoded bit stream; and

controlling means for controlling said re-encoding means to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to an edit position at which the first base band signal and the second base band signal are connected and that is detected by matching the phases of the first base band signal and the third base band signal and comparing these signals to re-encode the third base band signal,

wherein the codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

25. A re-encoding apparatus, comprising:

re-encoding means for re-encoding a third base band signal to generate a third encoded bit stream, the third base band signal being obtained by editing a first base band signal and a second band signal, the first base band signal being obtained by decoding a first encoded bit stream, the second base band signal being obtained by decoding a second encoded bit stream; and

controlling means for controlling said re-encoding means to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to an edit position at which the first base band signal and the second base band signal are connected and that is detected by matching the phases of the second base band signal and the third base band signal and comparing these signals to re-encode the third base band signal,

wherein the codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

26. An editing method, comprising the steps of:

decoding a first encoded bit stream to generate a first base band signal;

decoding a second encoded bit stream to generate a second base band signal;

matching the phases of the first base band signal, the second base band signal, and a third base band signal, and comparing these signals to detect an edit position at which the first base band signal and the second base band signal are connected, the third base band signal being obtained by editing the first base band signal and the second base band signal;

re-encoding the third base band signal to generate a third encoded bit stream; and

controlling the re-encoding step to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected at the detecting step to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

27. An editing method, comprising the steps of:

decoding a first encoded bit stream to generate a first base band signal;

decoding a second encoded bit stream to generate a second base band signal;

matching the phases of the first base band signal and a third base band signal and comparing these signals to detect an edit position at which the first base band signal and a second base band signal are connected, the third base band signal being obtained by editing the first base band signal and the second base band signal;

re-encoding the third base band signal to generate a third encoded bit stream; and

controlling the re-encoding step to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected at the detecting step to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

28. An editing method, comprising the steps of:

decoding a first encoded bit stream to generate a first base band signal;

decoding a second encoded bit stream to generate a second base band signal;

matching the phases of the second base band signal and a third base band signal and comparing these signals to detect an edit position at which the first base band signal and a second base band signal are connected, the third base band signal being obtained by editing the first base band signal and the second base band signal;

re-encoding the third base band signal to generate a third encoded bit stream; and

controlling the re-encoding step to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected at the detecting step to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

29. A re-encoding method, comprising the steps of:

matching the phases of a first base band signal and a third base band signal and comparing these signals to detect an edit position at which the first base band signal and the second base band signal are connected, the first base band signal being obtained by decoding a first encoded bit stream, the third base band signal being obtained by editing the first base band signal and a second base band signal, the second base band signal being obtained by decoding a second encoded bit stream;

re-encoding the third base band signal to generate a third encoded bit stream; and

controlling the re-encoding step to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected at the detecting step to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

30. A re-encoding method, comprising the steps of:

matching the phases of a second base band signal and a third base band signal and comparing these signals to detect an edit position at which a first base band signal and the second base band signal are connected, the second base band signal being obtained by decoding a second encoded bit stream, the third base band signal being obtained by editing the first base band signal and the second base band signal, the first base band signal being obtained by decoding a first encoded bit stream;

re-encoding the third base band signal to generate a third encoded bit stream; and

controlling the re-encoding step to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected at the detecting step to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

31. A re-encoding method, comprising the steps of:

matching the phases of a first base band signal, a second base band signal, and a third base band signal and comparing these signals to detect an edit position at which the first base band signal and the second base band signal are connected, the first base band signal being obtained by decoding a first encoded bit stream, the second base band signal being obtained by decoding the second encoded bit stream, the third base band signal being obtained by editing the first base band signal and the second base band signal;

re-encoding the third base band signal to generate a third encoded bit stream; and

controlling the re-encoding step to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to the edit position detected at the detecting step to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

32. A re-encoding method, comprising the steps of:

re-encoding a third base band signal to generate a third encoded bit stream, the third base band signal being obtained by editing a first base band signal and a second band signal, the first base band signal being obtained by decoding a first encoded bit stream, the second base band signal being obtained by decoding a second encoded bit stream; and

controlling the re-encoding step to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to an edit position at which the first base band signal and the second base band signal are connected and that is detected by matching the phases of the first base band signal and the third base band signal and comparing these signals to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

33. A re-encoding method, comprising the steps of:

re-encoding a third base band signal to generate a third encoded bit stream, the third base band signal being obtained by editing a first base band signal and a second base band signal, the first base band signal being obtained by decoding a first encoded bit stream, the second base band signal being obtained by decoding a second encoded bit stream; and

controlling the re-encoding step to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to an edit position at which the first base band signal and the second base band signal are connected and that is detected by matching the phases of the second base band signal and the third base band signal and comparing these signals to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.

34. A re-encoding method, comprising the steps of:

re-encoding a third base band signal to generate a third encoded bit stream, the third base band signal being obtained by editing a first base band signal and a second band signal, the first base band signal being obtained by decoding a first encoded bit stream, the second base band signal being obtained by decoding a second encoded bit stream; and

controlling the re-encoding step to selectively re-use first codec information used to generate the first base band signal and second codec information used to generate the second base band signal corresponding to an edit position at which the first base band signal and the second base band signal are connected and that is detected by matching the phases of the first base band signal, the second base band signal, and the third base band signal and comparing these signals to re-encode the third base band signal,

wherein the first and the second codec information includes a moving vector, a picture type, a quantizing step size, and a quantizing scale.