Editing system, editing controlling apparatus, and editing controlling method

• US 20060120466A1
• Filed: 01/18/2006
• Published: 06/08/2006
• Est. Priority Date: 01/19/1998
• Status: Active Grant

• Current Assignee: Hiromi Yoshinari, Yoshihiro Murakami
• Original Assignee: Hiromi Yoshinari, Yoshihiro Murakami
• Inventors: Murakami, Yoshihiro, Yoshinari, Hiromi
• Granted Patent: US 7,920,634 B2
• Time in Patent Office: Days
• 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

1-27. -27. (canceled)

28. 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;

connecting means for connecting the first base band signal and the second base band signal at a predetermined edit position to generate a third base band signal;

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

controlling means for controlling said re-encoding means to selectively re-use the first encoded bit stream or first codec information used to generate the first base band signal and the second encoded bit stream or second codec information used to generate the second base band signal at the edit position.

29. The editing apparatus as set forth in claim 28,

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 of the third base band signal.

30. The editing apparatus as set forth in claim 28, 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.

31. The editing apparatus as set forth in claim 28,

wherein said controlling means controls said re-encoding means to re-use the first codec information and the second codec information of each picture.

32. The editing apparatus as set forth in claim 28,

wherein said controlling means controls said re-encoding means to re-use the first codec information and the second codec information of each macro block.

33. The editing apparatus as set forth in claim 28, further comprising:

picture type determining means for determining the picture type of a picture at the edit position of the third base band signal connected by said connecting means; and

re-use determining means for detecting whether a prediction objective picture is present at the edit position in the third base band signal corresponding to the picture type determined by said picture type determining means to determine whether to re-use the first codec information and the second codec information,

wherein said controlling means controls said re-encoding means corresponding to the determined result of said re-use determining means.

34. The editing apparatus as set forth in claim 33,

wherein when the re-use determining means has determined that the prediction objective picture be not present in the third base band signal, said controlling means controls said re-encoding means not to re-use the first codec information and the second codec information.

35. The editing apparatus as set forth in claim 33, further comprising:

picture flag 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 picture type determining means,

wherein said re-use determining means references the picture flag that has been set by said picture flag setting means to determine whether to re-use the first codec information and the second codec information.

36. The editing apparatus as set forth in claim 28, further comprising:

macro block type determining means for determining the macro block type of a picture at the edit position of the third base band signal connected by said connecting means; and

re-use determining means for detecting whether a prediction objective macro block is present at the edit position in the third base band signal corresponding to the macro block type determined by said macro block type determining means to determine whether to re-use the first codec information and the second codec information,

wherein said controlling means controls said re-encoding means corresponding to the determined result of said re-use determining means.

37. The editing apparatus as set forth in claim 36,

wherein when the re-use determining means has determined that the prediction objective macro block be not present in the third base band signal, said controlling means controls said re-encoding means not to re-use the first codec information and the second codec information.

38. The editing apparatus as set forth in claim 36, further comprising:

macro block flag 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 macro block type determining means,

wherein said re-use determining means references the macro block flag that has been set by said macro block flag setting means to determine whether to re-use the first codec information and the second codec information.

39. An editing method, comprising the steps of:

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

connecting the first base band signal and the second base band signal at a predetermined edit position to generate a third base band signal;

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

controlling the re-encoding step to selectively re-use the first encoded bit stream or first codec information used to generate the first base band signal and the second encoded bit stream or second codec information used to generate the second base band signal at the edit position.

40. An editing apparatus, comprising:

connecting means for connecting a first base band signal and a second base band signal at a predetermined edit position to generate a third 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;

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

controlling means for controlling said re-encoding means to selectively re-use the first encoded bit stream or first codec information used to generate the first base band signal and the second encoded bit stream or second codec information used to generate the second base band signal at the edit position.

41. An editing method, comprising the steps of:

connecting a first base band signal and a second base band signal at a predetermined edit position to generate a third 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;

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

controlling the re-encoding step to selectively re-use the first encoded bit stream or first codec information used to generate the first base band signal and the second encoded bit stream or second codec information used to generate the second base band signal at the edit position.

42. A re-encoding apparatus, comprising:

re-encoding means for re-encoding a third base band signal of which a first base band signal obtained by decoding a first encoded bit stream and a second base band signal obtained by decoding a second encoded bit stream are connected at a predetermined edit position to generate a third encoded bit stream; and

controlling means for controlling said re-encoding means to selectively re-use the first encode bit stream or first codec information used to generate the first base band signal and the second encoded bit stream or second codec information used to generate the second base band signal at the edit position.

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

re-encoding a third base band signal of which a first base band signal obtained by decoding a first encoded bit stream and a second base band signal obtained by decoding a second encoded bit stream are connected at a predetermined edit position to generate a third encoded bit stream; and

controlling the re-encoding step to selectively re-use the first encode bit stream or first codec information used to generate the first base band signal and the second encoded bit stream or second codec information used to generate the second base band signal at the edit position.