JPS6162288A - Color filter selecting device of video camera - Google Patents
Color filter selecting device of video cameraInfo
- Publication number
- JPS6162288A JPS6162288A JP59185131A JP18513184A JPS6162288A JP S6162288 A JPS6162288 A JP S6162288A JP 59185131 A JP59185131 A JP 59185131A JP 18513184 A JP18513184 A JP 18513184A JP S6162288 A JPS6162288 A JP S6162288A
- Authority
- JP
- Japan
- Prior art keywords
- color
- color filter
- filter
- video camera
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/10—Circuitry of solid-state image sensors [SSIS]; Control thereof for transforming different wavelengths into image signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Blocking Light For Cameras (AREA)
- Indication In Cameras, And Counting Of Exposures (AREA)
- Color Television Image Signal Generators (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ビデオカメラのレンズにつける色温度補正用
色フィルタの選択装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a selection device for a color temperature correction color filter to be attached to a lens of a video camera.
（従来技術及び発明の解決すべき問題点）従来、ビデオ
カメラのレンズにつける色温度補正用の色フィルタの選
択は、撮影者が自分の判断で行っている。(Prior Art and Problems to be Solved by the Invention) Conventionally, the selection of a color temperature correction color filter to be attached to a video camera lens is made by the photographer at his or her own discretion.
このため、カメラが移動したり夕方になるなど回りの条
件か′変って色温度が変ったと外、撮影者が色フィルタ
の選択を忘れたり、選択を誤まったりすることがある。For this reason, if the color temperature changes due to changes in surrounding conditions, such as when the camera moves or when it becomes evening, the photographer may forget to select a color filter or may select the wrong color filter.
そうすると、色温度のズレのため画面全体が赤っぽくな
ったり、青っぽくなったりした異常な画面になってしま
うことが多い。This often results in an abnormal screen in which the entire screen appears reddish or bluish due to the difference in color temperature.
本発明は、色フィルタの選択忘れや選択誤りなどを防止
するためになされたものであり、本発明の目的は、カメ
ラが最適な色フィルタや色フィルタの選択誤りを撮影者
に教え、または自動的に最適なフィルタに切換える方法
を提供することである。The present invention was made in order to prevent forgetting to select a color filter or making a mistake in selecting a color filter.An object of the present invention is to enable the camera to teach the photographer the optimal color filter or a mistake in the selection of a color filter, or to automatically The purpose of the present invention is to provide a method for switching to an optimal filter.
（発明の構成）
本発明に係るビデオカメラの色フィルタ選択回路は、二
枚以上の色フィルタを備え、色温度によって色フィルタ
を切換える方式のビデオカメラにおいて、色温度を検出
する色温度検知手段と、この色温度検知手段の出力から
最適の色フィルタを判別する判別手段と、この最適の色
フィルタを撮影者に教える告知手段とを備えたことを特
徴とする。(Structure of the Invention) A color filter selection circuit for a video camera according to the present invention is a video camera having two or more color filters and switching the color filters depending on the color temperature. The present invention is characterized by comprising a determining means for determining the optimum color filter from the output of the color temperature detecting means, and a notification means for informing the photographer of the optimum color filter.
また、本発明に係るビデオカメラの色フィルタ選択回路
は、二枚以上の色フィルタを備え、色温度によって色フ
ィルタを切換える方式のビデオカメラにおいて、色温度
を検出する色温度検知手段と、色温度から最適の色フィ
ルタを判別する判別手段と、この判別手段の出力により
最適の色フィルタに切換える色フィルタ切換手段とを備
えていることを特徴とする。Further, the color filter selection circuit for a video camera according to the present invention is a video camera having two or more color filters and switching the color filters depending on the color temperature. The present invention is characterized in that it includes a discriminating means for discriminating the optimum color filter from among the color filters, and a color filter switching means for switching to the optimum color filter based on the output of the discriminating means.
（作用）
本発明により、最適の色フィルタが判別され、判別の結
果を撮影者に指示し、警告し、または、最適の色フィル
タに自動的に切換える。(Function) According to the present invention, the optimal color filter is determined, and the result of the determination is given to the photographer, or a warning is given, or the color filter is automatically switched to the optimal color filter.
（実施例） 以下、添付の図面を参照して本発明の詳細な説明する。(Example) Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
まず、カメラが撮影者に最適色フィルタを教えるシステ
ムを説明する。第１図は、このシステム
。First, we will explain a system in which the camera teaches the photographer the optimal color filter. Figure 1 shows this system
.
のブロック図である。それぞれ別の色の光を通す
訃、訃二枚のフィルタ１．１を通った光
は、受光素子２゜２によって受光され、判別回路３は、
その出力をもとに最適な色フィルタを判別し発光素子４
，４゜４によって撮影者に教える。FIG. Let each color of light pass through
The light that has passed through the two filters 1.1 is received by the light receiving element 2゜2, and the discrimination circuit 3
Based on the output, the optimal color filter is determined and the light emitting element 4
, 4°4.
第２図は第１図に示したシステムの具体的な回路図であ
る。青色の光を通す青フィルタ５と赤色の光を通す赤フ
ィルタ６をそれぞれ通った光は、７オトダイオード７．
７によって受光され、その出力が２個のコンパレータ８
，８にそれぞれ十人力には直接に、−人力には抵抗Ｒ１
，Ｒ２とＲ３゜Ｒ４により分圧されて入力されている。FIG. 2 is a specific circuit diagram of the system shown in FIG. The light that has passed through the blue filter 5 that passes blue light and the red filter 6 that passes red light is passed through 7 otodiodes 7.
7, and its output is sent to two comparators 8
, 8 and 10 respectively, direct to human power, - resistance to human power R1
, R2, R3° and R4.
青の入力が赤の入力より十分大きいときはＬＥＤＩＩが
点燈され、赤の入力が青の入力より十分大きいときはＬ
ＥＤＩＯが点燈され、青と赤が同じくらいのときはＮＡ
ＮＤデート９を介してＬＥＤ１２が点燈される。よって
、回りの光が青っぽいとき、赤ぼりいとき、どちらでも
ないときの区別がＬＥＤｌｏ、１１．１２によって示さ
れ、それによって色フィルタの選択ができることになる
。When the blue input is sufficiently greater than the red input, LED II lights up, and when the red input is sufficiently greater than the blue input, LED II lights up.
When EDIO is lit and the blue and red are the same, it is NA.
The LED 12 is turned on via the ND date 9. Therefore, the LED lo, 11.12 indicates whether the surrounding light is bluish, reddish, or neither, and the color filter can be selected accordingly.
自動的に色フィルタの選択がなされるシステムが、第３
図に示される。最適な色フィルタを１−リ別。The system that automatically selects color filters is the third
As shown in the figure. The best color filters are categorized by 1-1.
する判別回路３の出力がフィルタ切換器２１に入力され
ると、フィルタ切換器２１は、レンズ２２と撮像管（ま
たは固体撮像素子）２３との間に最適の色フィルタ２４
を配置する。When the output of the discrimination circuit 3 is input to the filter switching device 21, the filter switching device 21 selects the optimal color filter 24 between the lens 22 and the image pickup tube (or solid-state image sensor) 23.
Place.
撮影者が色フィルタの選択を忘れた場合、または誤まっ
た場合、撮影者に警報を与えるシステムが、第４図に示
される。最適な色フィルタを判別する判別回路３の出力
と、レンズ２２と撮像管２３との間に現在配置されてい
る色フィルタを検知する色フィルタ検知回路３１の出力
とが、比較回路３２に入力して比較される。最適フィル
タと現在の色フィルタ２４とが違っているときは、警告
装置３３に出力して警告を与える。A system is shown in FIG. 4 that alerts the photographer if the photographer forgets or makes a mistake in selecting a color filter. The output of the discrimination circuit 3 that discriminates the optimal color filter and the output of the color filter detection circuit 31 that detects the color filter currently placed between the lens 22 and the image pickup tube 23 are input to the comparison circuit 32. are compared. When the optimum filter and the current color filter 24 are different, the output is output to a warning device 33 to give a warning.
（発明の効果）
本発明によれば、色フィルタの選択間違いがなくなり良
好な撮影が行えるようになる。(Effects of the Invention) According to the present invention, there is no mistake in selecting a color filter, and good photographing can be performed.
第１図は、最適色フィルタを撮影者に教えるシステムの
ブロック図である。
第２図は、第１図に示したシステムの具体的な回路の回
路図である。
第３図は、色フィルタを自動的に選択するシステムのブ
ロック図である。
第４図は色フィルタが違っていることを警告するシステ
ムのブロック図である。
３・・・判別回路、 ５・・・青フィルタ、６・・
・赤フィルタ、 ７．７・・・７ｔ）ダイオード、８
．８・・・比較器、 ９・・・ＮＡＮＤデート、１０
．１１．１２・・・発光グイオード、２１・・・色フィ
ルタ切換器、 ２２・・・レンズ、２３・・・撮像管
、 ２４．２４・・・色フィルタ、３１・・・色フィ
ルタ検知回路、 ３２・・・比較回路、３３・・・警告
装置。
特 許 出 願 人 シャープ株式会社代 理
人 弁理士 青白 葆 ほか２名第１図
第２図FIG. 1 is a block diagram of a system for teaching a photographer the optimal color filter. FIG. 2 is a circuit diagram of a specific circuit of the system shown in FIG. FIG. 3 is a block diagram of a system for automatically selecting color filters. FIG. 4 is a block diagram of a system for warning that color filters are incorrect. 3...Discrimination circuit, 5...Blue filter, 6...
・Red filter, 7.7...7t) diode, 8
．． 8...Comparator, 9...NAND date, 10
．． 11.12... Light emitting guide, 21... Color filter switch, 22... Lens, 23... Image pickup tube, 24.24... Color filter, 31... Color filter detection circuit, 32 ... Comparison circuit, 33... Warning device. Patent applicant: Sharp Co., Ltd. Agent: Patent attorney: Aobai Ao and 2 others Figure 1 Figure 2
Claims (4)
フィルタを切換える方式のビデオカメラにおいて、色温
度を検出する色温度検知手段と、この色温度検知手段の
出力から最適の色フィルタを判別する判別手段と、この
最適の色フィルタを撮影者に教える告知手段とを備えた
ことを特徴とするビデオカメラの色フィルタ選択回路。(1) In a video camera that is equipped with two or more color filters and switches the color filters depending on the color temperature, a color temperature detection means detects the color temperature, and the optimum color filter is determined from the output of this color temperature detection means. 1. A color filter selection circuit for a video camera, comprising: a determining means for determining the optimum color filter; and a notification means for informing a photographer of the optimum color filter.
の色フィルタ選択回路において、 上記の告知手段が最適の色フィルタを表示する表示手段
であることを特徴とするビデオカメラの色フィルタ選択
装置。(2) In the color filter selection circuit for a video camera according to claim 1, the notification means is a display means for displaying an optimal color filter. Device.
の色フィルタ選択回路において、 上記の告知手段が現在使用している色フィルタを検知す
る色フィルタ検知手段と、判別手段の出力と色フィルタ
検知手段の出力とを比較する比較手段と、現在のフィル
タが最適のフィルタでないときに警告する警告手段とか
らなることを特徴とするビデオカメラの色フィルタ選択
装置。(3) In the color filter selection circuit for a video camera recited in claim 1, the notification means includes a color filter detection means for detecting the color filter currently in use, and an output and a color of the discriminating means. A color filter selection device for a video camera, comprising a comparison means for comparing the output of the filter detection means, and a warning means for warning when the current filter is not the optimum filter.
フィルタを切換える方式のビデオカメラにおいて、色温
度を検出する色温度検知手段と、色温度から最適の色フ
ィルタを判別する判別手段と、この判別手段の出力によ
り最適の色フィルタに切換える色フィルタ切換手段とを
備えていることを特徴とするビデオカメラの色フィルタ
選択装置。(4) In a video camera that is equipped with two or more color filters and switches the color filters depending on the color temperature, a color temperature detection means for detecting the color temperature, a discrimination means for determining the optimal color filter from the color temperature, A color filter selection device for a video camera, comprising color filter switching means for switching to an optimal color filter based on the output of the discrimination means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59185131A JPS6162288A (en) | 1984-09-03 | 1984-09-03 | Color filter selecting device of video camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59185131A JPS6162288A (en) | 1984-09-03 | 1984-09-03 | Color filter selecting device of video camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6162288A true JPS6162288A (en) | 1986-03-31 |
Family
ID=16165411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59185131A Pending JPS6162288A (en) | 1984-09-03 | 1984-09-03 | Color filter selecting device of video camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6162288A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2701771A1 (en) * | 1993-02-17 | 1994-08-26 | Nikon Corp | Camera with thermocolorimeter. |
| US5710948A (en) * | 1992-06-09 | 1998-01-20 | Nikon Corporation | Camera system with color temperature meter |
| CN1324398C (en) * | 2000-07-25 | 2007-07-04 | 富士胶片株式会社 | Flashlight unit of camera, electronic camera and lighting head |
-
1984
- 1984-09-03 JP JP59185131A patent/JPS6162288A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5710948A (en) * | 1992-06-09 | 1998-01-20 | Nikon Corporation | Camera system with color temperature meter |
| FR2701771A1 (en) * | 1993-02-17 | 1994-08-26 | Nikon Corp | Camera with thermocolorimeter. |
| CN1324398C (en) * | 2000-07-25 | 2007-07-04 | 富士胶片株式会社 | Flashlight unit of camera, electronic camera and lighting head |
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