Video signal processor and video camera

• US 20040091043A1
• Filed: 09/26/2003
• Published: 05/13/2004
• Est. Priority Date: 03/26/2001
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Takemoto, Shinji
• Application Number:
  US10/472,946
• Publication Number:
  US 20040091043A1
• Time in Patent Office: Days
• US Class Current: 375/240.01
• CPC Class Codes: G11B 2220/90 Tape-like record carriers
• CPC Class Codes: G11B 27/024 on tapes G11B27/028, G11B27/029 take precedence
• CPC Class Codes: G11B 27/032 on tapes G11B27/036, G11B27/038 take precedence
• CPC Class Codes: H04N 23/632 for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
• CPC Class Codes: H04N 5/772 the recording apparatus and the television camera being placed in the same enclosure
• CPC Class Codes: H04N 5/9261 involving data reduction
• CPC Class Codes: H04N 5/945 for signals recorded by pulse code modulation

Abstract

A previously picked-up video signal stored in a memory (51) and a presently picked-up video signal output from a photoelectric converter (10) are switched by a change-over switch (140), while being continuously displayed on a monitor display (150). By doing so, a shooter can determine whether he/she admits the presently picked-up video signal. Even an inexperienced shooter can easily carry out the shooting and recording operation for each frame with high accuracy for an improved working efficiency.

Claims

1. A video signal processor comprising:

a memory for storing a video signal input from the outside of an apparatus;

a selector for selecting a previously picked-up video signal output from the memory and a presently picked-up video signal input from the outside of the apparatus;

a display unit for converting the previously picked-up video signal or the presently picked-up video signal selected by the selector into an image and displaying the image; and

a controller for controlling an operation of writing the presently picked-up video signal on the memory, an operation of reading the previously picked-up video signal from the memory and the operation of the selector selecting the previously picked-up video signal or the presently picked-up video signal.

2. A video signal processor as claimed in claim 1, wherein the controller controls the operation of the selector selecting the previously picked-up video signal and the presently picked-up video signal by frame.

3. A video signal processor as claimed in claim 1, further comprising an operating unit for receiving an input indicating whether an operator of the video signal processor admits a display status of the display unit or not;

wherein the controller receives the input indicating the admission or non-admission through the operating unit and controls an operation of storing the presently picked-up video signal on the memory in a state corresponding to the previously picked-up video signal.

4. A video signal processor as claimed in claim 3, further comprising a recorder for recording on a recording medium the video signal stored on the memory;

wherein the controller further controls the operation of reading the previously picked-up video signals stored in the memory at a time and recording the previously picked-up video signals on the recording medium of the recorder.

5. A video signal processor comprising:

a memory for storing a video signal input from the outside of an apparatus;

an adder for adding a previously picked-up video signal output from the memory and a presently picked-up video signal input from the outside of the apparatus;

a display unit for converting a result of the addition by the adder into an image; and

a controller for controlling an operation of writing the presently picked-up video signal on the memory, an operation of reading the previously picked-up video signal from the memory and the operation of the adder adding the previously picked-up video signal and the presently picked-up video signal.

6. A video camera comprising:

an imaging unit for generating a video signal;

a memory for storing the video signal;

a selector for selecting a previously picked-up video signal output from the memory and a presently picked-up video signal output from the imaging unit;

a display unit for converting the previously picked-up video signal or the presently picked-up video signal selected by the selector into an image and displaying the image; and

a controller for controlling an operation of writing the presently picked-up video signal on the memory, an operation of reading the previously picked-up video signal from the memory and the operation of the selector selecting the previously picked-up video signal or the presently picked-up video signal.

7. A video camera as claimed in claim 6,

wherein the controller controls the operation of selecting the previously picked-up video signal or the presently picked-up video signal by frame.

8. A video camera as claimed in claim 6, further comprising an operating unit for receiving an input indicating whether an operator of the video camera admits a display status of the display unit or not;

wherein the controller receives an input indicating the admission or non-admission through the operating unit and controls an operation of storing the presently picked-up video signal on the memory in a state corresponding to the previously picked-up video signal.

9. A video camera as claimed in claim 6, further comprising a recorder for recording on a recording medium the video signals stored on the memory;

wherein the controller further controls the operation of reading the previously picked-up video signals stored in the memory at a time and recording the previously picked-up video signals on the recording medium of the recorder.

10. A video camera comprising:

an imaging unit for generating a video signal;

a memory for storing the video signal;

an adder for adding a previously picked-up video signal output from the memory and a presently picked-up video signal input from the imaging unit;

a display unit for converting a result of the addition by the adder into an image and displaying the image; and

a controller for controlling an operation of writing the presently picked-up video signal on the memory, an operation of reading the previously picked-up video signal from the memory and the operation of the adder adding the previously picked-up video signal and the presently picked-up video signal.