Television camera

• US 9,055,270 B2
• Filed: 02/20/2004
• Issued: 06/09/2015
• Est. Priority Date: 02/24/2003
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Takemoto, Shinji, Fuse, Shoichi, Motoda, Kazumasa, Noda, Akiyuki
• Primary Examiner(s): Zhao, Daquan
• Application Number:
  US10/544,876
• Publication Number:
  US 20060147187A1
• Time in Patent Office: 4,127 Days
• Field of Search: 386 45- 46, 386/209, 386/210, 386/239, 386/278, 386/279, 386/326, 386/353, 348207-211
• US Class Current: 1/1
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 2020/10592 specifically adapted for recording or reproducing multichannel signals
• CPC Class Codes: H04N 25/71 Charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors
• CPC Class Codes: H04N 5/05 Synchronising circuits with arrangements for extending range of synchronisation, e.g. by using switching between several time constants
• CPC Class Codes: H04N 5/772 the recording apparatus and the television camera being placed in the same enclosure
• CPC Class Codes: H04N 7/0105 using a storage device with different write and read speed

Abstract

A first video signal having a first frame rate optionally settable is generated by an image pickup device, and the first video signal is memorized in a memory and outputted from the memory. A write control device controls the write of the first video signal with respect to the memory, and a read control device controls the read of the video signal with respect to the memory. The write control device writes respective first frame data constituting the first video signal in the memory in each cycle determined by the first frame rate of the first video signal. The read control device reads the first frame data as a second video signal. The second video signal is formed from sequentially arranging the first frame data in a partially duplicating manner in a standard video signal having a standard frame rate based on a determined arrangement rule. The predetermined arrangement rule is an arrangement rule employed when respective frame data constituting a video signal having a second frame rate equal to or lower than the standard frame rate are arranged in a duplicating manner in the standard video signal. In the foregoing manner, an time elongation/contraction effect on an image can be speedily and inexpensively obtained.

Claims

1. A television camera comprising:

an image pickup device for generating a first video signal having a first frame rate optionally settable;

a memory device for temporarily memorizing the first video signal outputted from the image pickup device;

a write control device for controlling an operation of writing the first video signal with respect to the memory device; and

a read control device for controlling an operation of reading the video signal memorized in the memory device, wherein

the write control device controls an operation of writing respective first frame data constituting the first video signal in the memory device in each time cycle determined by the first frame rate,

the read control device controls an operation of reading the first frame data memorized in the memory device as a second video signal,

the second video signal has a signal mode in which the respective first frame data are sequentially arranged in a partially duplicating manner in a standard video signal having a standard frame rate determined by an output standard format of the television camera based on a predetermined arrangement rule, and

the predetermined arrangement rule is an arrangement rule employed when respective frame data constituting a video signal having a second frame rate equal to or lower than the standard frame rate (standard frame rate≧

second frame rate) are arranged in a duplicating manner in the standard video signal in such manner that they correspond to one another in terms of real time on an image.

2. A television camera as claimed in claim 1, wherein

the first video signal generated by the image pickup device includes a video signal generated in a temporally at-random intermittent imaging.

3. A television camera as claimed in claim 1, further comprising a recorder for recording the second video signal on a recording medium.

4. A television camera as claimed in claim 1, further comprising a display device for converting the second video signal outputted from the memory device into a display image and displaying the display image.

5. A television camera as claimed in claim 1, further comprising:

a converting device for converting the first video signal into the standard video signal having the standard frame rate determined by the output standard format of the television camera;

a selecting device for selecting from the second video signal outputted from the memory device and the standard video signal outputted from the converting device; and

a display device for converting an output of the selecting device into a display image and displaying the display image.