Video processing apparatus, method of adding time code, and methode of preparing editing list

Abstract

A video processing apparatus is provided. The video processing apparatus includes: an inputter inputting video signals of a plurality of systems, and a processor generating processed video signals by performing switching on the video signals of two or more systems input into the inputter. Further, the video processing apparatus includes: a time code generator generating a time code, and a time code adder adding the time code to the input video signals and the generated video signals respectively, outputs the video signals with the time code to be recorded in a recording medium.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram showing an example of a video switcher in use to which an embodiment of the present invention is applied;

FIG. 2 is a block diagram showing a configuration of main units of a video switcher to which an embodiment of the present invention is applied;

FIG. 3 is a diagram showing buttons and the like provided to a panel unit of the video switcher shown in FIG. 1;

FIG. 4 is a flow chart showing time code processing performed by a TC adding unit in an input unit of the video switcher shown in FIG. 1;

FIG. 5 is a flow chart showing the time code processing performed by the TC adding unit in the input unit of the video switcher shown in FIG. 1;

FIG. 6 is a flow chart showing the time code processing performed by the TC adding unit in the input unit of the video switcher shown in FIG. 1;

FIG. 7 is a diagram showing a relationship between a time code when starting recording of materials and a time code when starting recording of PGM signals; and

FIG. 8 is a diagram illustrating a relationship between an operation performed on the panel unit and a switching list prepared.

Claims

1. A video processing apparatus, comprising: input means for inputting video signals of a plurality of systems;processing means for processing the video signals of two or more systems input into said input means and generating processed video signals;time code generating means for generating a time code; andtime code adding means for adding the time code generated by said time code generating means to the processed video signals generated by said processing means, and adding the time code, which is obtained by adding a value corresponding to processing delay time at said processing means to a value of the time code generated by said time code generating means, to the video signals input into said input means.

2. A video processing apparatus according to claim 1, further comprising: recording means for recording the video signals with the time code added by said time code adding means in a recording medium.

3. A video processing apparatus according to claim 1, further comprising: synchronization control means for synchronizing the video signals input into said input means with reference synchronization signals within the apparatus, whereinsaid time code adding means acquires an initial value with respect to the input video signals asynchronous with said reference synchronization signals by adding the value corresponding to processing delay time at said processing means to the value of the time code generated by said time code generating means, generating a time code incrementing the initial value by one frame of the input video signals, and adding the time code to the asynchronous input video signals.

4. A video processing apparatus according to claim 1, wherein: said time code generating means generates a time code according to a standard corresponding to video signals of a specific format; andsaid time code adding means converts the value of the time code generated by said time code generating means into the value of the time code according to the standard corresponding to the format of the input video signals in the case of the format of the video signals input into said input means differing from said specific format, acquiring an initial value by adding the value corresponding to processing delay time in said processing means to the value of the converted time code, generating the time code incrementing the initial value by one frame of the input video signals, and adding the time code to the input video signals.

5. A video processing apparatus according to claim 1, wherein: said processing means performs switching between the video signals of two systems and generates processed video signals; andoperating means for instructing said processing means to perform switching andswitching list preparing means for preparing a switching list representing information indicating operation contents of said operating means by using the time code generated by said time code generating means as time informationare further included.

6. A video processing apparatus according to claim 5, further comprising: time code correcting means for adding the value corresponding to time after performing the operation at said operating means and before starting the switching at said processing means to the value of the time code generated by said time code generating means, whereinsaid switching list preparing means uses the time code corrected by said time code correcting means as the time information.

7. A method of adding a time code, comprising the steps of: inputting video signals of a plurality of systems;processing said input video signals of two or more systems and generating processed video signals;generating a time code; andadding said generated time code to said processed video signals, and adding the time code, which is obtained by adding the value corresponding to processing delay time due to said processing to the value of said generated time code, to said input video signals.

8. A method of adding a time code according to claim 7, further comprising the step of: recording the video signals with said time code added thereto in a recording medium.

9. A method of preparing an editing list, comprising the steps of: inputting video signals of a plurality of systems;processing said input video signals of two or more systems and generating processed video signals;generating a time code;adding said generated time code to said processed video signals, and adding the time code, which is obtained by adding the value corresponding to processing delay time due to said processing to the value of said generated time code, to said input video signals;instructing operation on said processing; andpreparing an editing list representing information indicating contents of said operation by using said generated time code as time information.

10. A method of preparing an editing list according to claim 9, further comprising the step of: recording said editing list.

11. A method of preparing an editing list according to claim 9, wherein said processing is switching processing.

12. A video processing apparatus, comprising: an inputter inputting video signals of a plurality of systems;a processor processing the video signals of two or more systems input into said inputter and generating processed video signals;a time code generator generating a time code; anda time code adder adding the time code generated by said time code generator to the processed video signals generated by said processor, and adding the time code, which is obtained by adding a value corresponding to processing delay time at said processor to a value of the time code generated by said time code generator, to the video signals input into said inputter.