JPS5999863A - Color original reading method - Google Patents
Color original reading methodInfo
- Publication number
- JPS5999863A JPS5999863A JP57209923A JP20992382A JPS5999863A JP S5999863 A JPS5999863 A JP S5999863A JP 57209923 A JP57209923 A JP 57209923A JP 20992382 A JP20992382 A JP 20992382A JP S5999863 A JPS5999863 A JP S5999863A
- Authority
- JP
- Japan
- Prior art keywords
- color
- light
- electrode
- switch
- wavelength
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/48—Picture signal generators
- H04N1/486—Picture signal generators with separate detectors, each detector being used for one specific colour component
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Image Input (AREA)
- Facsimile Heads (AREA)
- Color Television Image Signal Generators (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はカラー原稿の色ｒｆ＃像度を向上させるための
カラー原稿読取方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a color document reading method for improving the color RF# image quality of a color document.
従来のカラーファクシミリ等におけるカラー原烏読取装
置には赤、緑、青のダイクロイックミラーからなる三色
分解フィルタが用いられていた。。A three-color separation filter consisting of red, green, and blue dichroic mirrors has been used in a conventional color facsimile reading device. .
そして照明用光源によるカラー原稿からの反射うＣをこ
の赤、緑、宵のダイクロイックミラーからなる３色分解
光学系を介して３色に分解した後光電変換を行い、その
電気信号から光１４号の色を＃１１別しカラー原ｆｔ１
の読み取りを行っていた。このように従来のカラー原稿
読取装置においては、３色分角゛Ｃ用フィルタを用いる
ためそのための処理回路等も必要となり、読取部の機構
、回路１′１り成が複雑になるという不都合があった。Then, the C reflected from the color document by the illumination light source is separated into three colors through this three-color separation optical system consisting of red, green, and evening dichroic mirrors, and then photoelectrically converted, and the electrical signal is converted into optical signal 14. Color #11 and color original ft1
was being read. In this way, in the conventional color document reading device, since a filter for three color separation angles C is used, a processing circuit for this purpose is also required, which has the disadvantage that the structure of the reading section and the configuration of the circuit 1'1 become complicated. there were.
またダイクロイックミラーのフィルタ特性によって分解
波長領域が制限され十分々解像結果を得ることができな
いといつ問題もあった。Furthermore, the filter characteristics of the dichroic mirror limit the wavelength range to be resolved, and there has always been a problem in that it is not possible to obtain a sufficiently resolved result.
本発明はかかる実状に鑑みてなされたものであり装置と
して３色分解用フィルタが不要であり単純機構かつ広い
波長領域の光の効率よい解像結果が得られるカラー原稿
読取方法を提供することをその目的とする。The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a color document reading method that does not require a three-color separation filter as a device, has a simple mechanism, and can obtain efficient resolution results for light in a wide wavelength range. That purpose.
本発明においては上記観点から近年、ファクシミリ等の
原稿読取部の小型化を計るために開発の進Ｘ７でいる長
尺薄膜読取素子の流用に着目したものである。この読取
素子は絶縁性基板上に所定形状でパターンニングされた
複数の下部電極に光導電体を着膜し、更にその上に透明
電極を着膜した多層構造の光電変換素子でおる。かかる
読取素子は原稿幅と同程度の大きさで構成できファクシ
ミリ等の原稿読取部の小型化に寄与できるのみならず、
０゜］ ＩＴＩ ｓｅｃ以下の光応答特性、２００’Ｏ
以上の耐熱性等種々の利点を有している。In view of the above, the present invention focuses on the use of a long thin film reading element, which has been developed in recent years in order to miniaturize document reading sections of facsimile machines and the like. This reading element is a photoelectric conversion element with a multilayer structure in which a photoconductor is deposited on a plurality of lower electrodes patterned in a predetermined shape on an insulating substrate, and a transparent electrode is further deposited on top of the photoconductor. Such a reading element can be configured to have a size comparable to the width of the document, and not only can it contribute to miniaturization of the document reading section of a facsimile machine, etc.
0°] Photoresponse characteristics below ITI sec, 200'O
It has various advantages such as the above heat resistance.
ところでこのような多層構造の読取素子に同一の光を照
射するとき下部電極と透明電極間に任意の異なる値のバ
イアス電圧を加えると、照射によって得られる光電変換
電流は、その加えられるバイアス電圧によって変化する
という性質を有している。そこで本発明においては上述
した多層構造のＲＩ９Ｚ素子に同一の光を照射するとき
に該読取素子の両電極間に値の異なる任意のバ・ｆアス
電用を加え、各々のバイアス電圧に応じた光電変換電流
をそれぞれ求め所定の演算を施すことによって各照射光
の色に対して一意的に定まる演算値から照射された光の
色を判別するようにしている。By the way, when applying the same light to a reading element with such a multilayer structure, if a bias voltage of an arbitrarily different value is applied between the lower electrode and the transparent electrode, the photoelectric conversion current obtained by the irradiation will depend on the applied bias voltage. It has the property of changing. Therefore, in the present invention, when the same light is irradiated to the multilayered RI9Z element described above, arbitrary bias voltages having different values are added between the two electrodes of the reading element, and the voltage is adjusted according to each bias voltage. By calculating each photoelectric conversion current and performing a predetermined calculation, the color of the irradiated light is determined from the calculated value that is uniquely determined for each color of irradiated light.
以下本発明の一実施例を添＋ｊ図面にもとづき詳細に説
明する。第１因は本発明に係るカラー原稍耽取素子の構
造を示す平面図であり絶縁性基板ｌ上にくし形にパター
ンニングされた複数の下部電極２に光導電体３を着膜し
更にその上に透明型（へ４を着膜して構成されている。An embodiment of the present invention will be described in detail below based on the attached drawings. The first factor is a plan view showing the structure of the color original absorption element according to the present invention. It is constructed by depositing a transparent mold (4) on top of it.
第２図はこの読取素子５のＡ−Ａ線断面図を示したもの
である。以下、この読取素子５の製造方法を実際の製造
行程に即して詳述する。本発明では？３縁性基板１にガ
ラス、下部電極２にＣｒ、光導電体３に非晶質水素化シ
リコン、透明電極４に酸化インジウム錫なそれぞれ用い
ている。まず電子ビーム蒸着法によシガ２ス基板上にＯ
ｒ（クロム）を約３（１００Ａ’の厚さに着膜する。続
いてフォトソリグラフィー法によｐこの着膜したＣｒを
複数のくし形状にパターンニングし、下部電極２を形成
させる。次にグロー放電法により非晶質シリコンを約１
μｍの厚さに着膜し、光導電体２を形成させる。FIG. 2 shows a cross-sectional view of this reading element 5 taken along line A--A. Hereinafter, the method for manufacturing the reading element 5 will be described in detail in accordance with the actual manufacturing process. In the present invention? Glass is used for the three-edge substrate 1, Cr is used for the lower electrode 2, amorphous hydrogenated silicon is used for the photoconductor 3, and indium tin oxide is used for the transparent electrode 4. First, by electron beam evaporation method, O
A film of r (chromium) is deposited to a thickness of about 3 (100 A'). Next, the deposited Cr film is patterned into a plurality of comb shapes by photolithography to form the lower electrode 2.Next Approximately 1% of amorphous silicon is
A film is deposited to a thickness of μm to form a photoconductor 2.
この時使用するガスは１００％ＳｉＨ４であり、ガス流
量２０〜５０８ ｃｃＭ 、圧力０．２〜Ｕ−５Ｔｏｒ
ｒ、 ＲＦパワー２０〜５０ Ｗ、基板温度２００〜３
００°Ｃ１着膜時間３０分〜１時間を作成条件とする。The gas used at this time is 100% SiH4, the gas flow rate is 20 to 508 ccM, and the pressure is 0.2 to U-5 Tor.
r, RF power 20-50 W, substrate temperature 200-3
The preparation conditions were 00°C1 film deposition time of 30 minutes to 1 hour.
更にＤＣスパッタ法によりこの非晶質シリコン上に酸化
インジウム錫を約１５００ ｐ、０着膜し、透明電極４
を形成させる。この際にはターゲットとして酸化インジ
ウム錫（９０ｍｏ／？％Ｉ ｎ ２０ ｇ ＋ １０ｍ
ｏ ｌ＄ Ｓ ｎｏ ２ ）を用いるが、全ガス（Ａ
ｒ＋０２）圧１〜５ Ｘ １０−”Ｔｏｒｒ、酸素分圧
］−〜２ Ｘｌ０−’Ｔｏｒｒ％Ｄ ｃハｒ７−１５０
〜２００Ｗを作成条件とする。このような作成方法°作
成売件により製造された読取素子５は第２図に示すよう
に透明電極４である酸化インジウム錫と光導電体３であ
る非晶質シリコン間でｎ−ｎ型のへテロ接合を形成する
ため光を照射することにより所定の光起電力を生ずるい
わゆる光電変換機能を有している。この読取素子５の下
部電！２１ｊ：複数のパターンに分割されているが、こ
の各々のパターン電極によってカラー原梧からの反射光
を画素毎に光電変換できる。Furthermore, a film of about 1500 p, 0 indium tin oxide was deposited on this amorphous silicon by DC sputtering, and a transparent electrode 4
to form. In this case, indium tin oxide (90mo/?%I n 20 g + 10m
o l$S no 2), but the total gas (A
r+02) Pressure 1~5 X 10-'Torr, oxygen partial pressure]-~2
The production condition is ~200W. As shown in FIG. 2, the reading element 5 manufactured by such a manufacturing method and the manufacturing process has an n-n type structure between indium tin oxide, which is the transparent electrode 4, and amorphous silicon, which is the photoconductor 3. It has a so-called photoelectric conversion function that generates a predetermined photovoltaic force by irradiating light to form a heterojunction. The lower part of this reading element 5! 21j: Divided into a plurality of patterns, each pattern electrode allows photoelectric conversion of the reflected light from the color rays for each pixel.
第３図はこの読取素子５を用いて構成したカラー原稿読
取装置の概略構成ブロック囚を示したものである。透ツ
］電極４とアース間にはスイッ−ｆ６を介して例えげ−
５■のバイアス電源７が接続される。また下部電極２は
それぞれの下部電極２に対応して設けられた複数のスイ
ッチ８を介して、信号演算部９に接続される３、今スイ
ッチ６を開成しバイアス電圧を印加しない状態で読取素
子５に各波長毎の光を一様に照射する。、−ｆｌうする
とこの読取素子５の光電変換作用により該各々の光の波
長に応じた光電流が生じる。この時各々の下部電極２に
接続されたそれぞれのスイッチ８を１航次閉成し、各々
の読取素子に対応する光電流ｓｌを濱針部９に取りこみ
図示しないメモリ顛１時記憶し”〔お〜く。この結果得
られる各波長のつｖ、に対する両電極間ノンバイアス時
の光電流Ｓ１は第５図（ａ）に示す分光特性を示す。こ
の時の分光特性のピークは波長６０（ｌｎｍ伺近に位置
している。次にスイノヂ６ｆ：閉成し透明電極４、下部
電極２間に一５Ｖのバイアス電）Ｅを加え上、述したと
同様の光の照射を行う。この時、同時に各スイノヂ８を
順次閉成することにより各々の下部電極２に生じたつい
■ｊ、流Ｓ２を済ｐ一部９に取り込む。この両正極間−
５Ｖハ・イアス時に得られる各波長の光に対する光電流
Ｓ２は第５図（ｂ）に示す分光特性を示す。FIG. 3 shows a schematic block diagram of a color document reading device constructed using this reading element 5. As shown in FIG. For example, a switch is connected between electrode 4 and ground via switch f6.
A bias power supply 7 (5) is connected. The lower electrode 2 is connected to a signal calculation unit 9 via a plurality of switches 8 provided corresponding to the respective lower electrodes 2. The read element 3 is connected to a signal calculation unit 9 by opening the switch 6 and applying no bias voltage. 5 is uniformly irradiated with light of each wavelength. , -fl, the photoelectric conversion action of the reading element 5 generates a photocurrent corresponding to the wavelength of each light. At this time, each switch 8 connected to each lower electrode 2 is closed for the first time, and the photocurrent sl corresponding to each reading element is taken into the base needle part 9 and stored in a memory (not shown). The photocurrent S1 obtained as a result of the non-bias between both electrodes for each wavelength V shows the spectral characteristics shown in FIG. 5(a).The peak of the spectral characteristics at this time is at wavelength 60 Next, Suinoji 6F: Close the transparent electrode 4 and the lower electrode 2. A bias voltage of 15V (E) is applied between them, and the same light as described above is irradiated.At this time, At the same time, by sequentially closing each switch 8, the flow S2 generated at each lower electrode 2 is taken into the finished part 9. Between these two positive electrodes -
The photocurrent S2 for light of each wavelength obtained at 5V high/earth shows the spectral characteristics shown in FIG. 5(b).
この時分光ｌ［￥性のピークはｆｉＪＱｎｒｎ付近に移
動していることがわかる。このことから、−Ｌ述（〜た
方法により得た光電変換電流Ｓ１とＳ２に所定の演算を
施せば各波長毎に一意的に定まる値を求められることが
わかる。本発明でｔま上記演算に割り算を適用（７てい
る。そこでこの両正極間ノンバイアス時に得られる光電
流８１と−５ｖバイアス時に得られる光電流Ｓ、からそ
の比Ｓ、、、／Ｓ２を予め求め”〔おく。第６図は照明
用光？７；−としてタングステンランプを用いたときの
上記Ｓｔ／８２％性を示すものである。上述した演算部
９岐両電極間を−５Ｖバイアス時の光電ｊｉＥｓｚを得
ｒ後、該Ｓ２と先に求めて記憶（〜ておいたＳｌから所
定の演算によりＳ ＋ ／ Ｓ ２を算出し、出カイ場
ＦＴｏｕｔ ｉタニｔｔｊ力する、この演算部９の出力
と予め求めておいたＳ、／Ｓ。At this time, it can be seen that the peak of the spectral l[\ property has moved to the vicinity of fiJQnrn. From this, it can be seen that if a predetermined calculation is performed on the photoelectric conversion currents S1 and S2 obtained by the method described in -L (~), a value that is uniquely determined for each wavelength can be obtained. Then, from the photocurrent 81 obtained when there is no bias between both positive electrodes and the photocurrent S obtained when -5V bias is applied, the ratio S, , /S2 is determined in advance. Figure 6 shows the above St/82% property when a tungsten lamp is used as the illumination light.The photoelectric power jiEsz when biasing -5V between the two electrodes of the above-mentioned arithmetic section 9 is obtained. After that, calculate S + / S 2 by a predetermined calculation from S2 and the previously calculated S1, and input the output field FTout. Oita S, /S.
を比較することにより照射された九の波長を求めること
ができこれによって政党の急１４］別すなわちへＩｃ取
りを行う。上述した例では実験的に各波長の光を読取部
：ｆ５に一梯に照射した場合で説明したが、実際（？ニ
ファクシミリ等に実装された場合はこの照射光（τを元
汀用ラングによるカラー原稿からの反射几である。By comparing the 9 wavelengths of the irradiated light, the wavelength of the irradiated light can be obtained, and from this, the Ic of the political party can be determined. In the above example, we have explained the case where light of each wavelength is irradiated on the reading section f5 in one step, but in reality (? This is a reflection from a color original.
従って読取素子５には前記カラー原稿の画素に応じたそ
れぞれの光が照射され、各下部電極２から得られる光ｉ
ｌＩ流Ｓｌ、８２および演算部９から得られるＳ （／
Ｓ ２は電極毎に異なった値が得られる。また本発明で
は下部電極、透明電極間のバイアス電圧をＱＶと一５Ｎ
とし得られる光電ｆｉｓ。Therefore, the reading element 5 is irradiated with light corresponding to each pixel of the color original, and the light i obtained from each lower electrode 2 is
S (/
Different values of S2 can be obtained for each electrode. In addition, in the present invention, the bias voltage between the lower electrode and the transparent electrode is set to QV and -5N.
The photoelectric fis obtained as
とＳ２に対してはその比Ｓｘ／Ｓｔを求める演算を施ｌ
〜だ例について述べたが、各周波数毎に一意的に定まる
値を求めることができれば、上述した以外のバイアス値
あるいは演算を用いてもよいことｔま勿論である。and S2, perform the calculation to obtain the ratio Sx/St.
Although the examples have been described, it goes without saying that bias values or calculations other than those described above may be used as long as a value that is uniquely determined for each frequency can be obtained.
以−に説明したように本発明のカラー原稿読取方法によ
れば多層構造を有する読取素子の両電極間に加えるバイ
アス電圧を変えることによっＣ得られる光電変換電流Ｓ
Ｉ＋Ｓ２の所定の演算結果から光信号を判別するように
したためカラーフィルタが不要であり読取部の機構が申
ｔ’ｌｌ化されるとともに１つのビｙ）で広い波長領域
の七ンヤ密度の高いカラー原稿の読取りが可能になると
いう優れた効果を奏する。As explained above, according to the color original reading method of the present invention, the photoelectric conversion current S obtained by changing the bias voltage applied between both electrodes of the reading element having a multilayer structure is
Since the optical signal is determined from the predetermined calculation result of I+S2, there is no need for a color filter, and the mechanism of the reading section can be simplified. This has the excellent effect of making it possible to read the original.
以上の実施例でしょ光導電体層として、単層の水素化非
晶Ｔ１シリコンを用いたが他に、ブｅ４電体層を多層ｖ
ｆ造にした金属電極／ｎ型−１型−ｐ型ａ−８ｉ目Ｉ／
透明正極、及び逆構造の金属゛電杓／ｐ型−１型−ｎ型
３−８ｉ：Ｈ／透明電極構造のセンサに於いても同様の
結果が得られる。In the above example, a single layer of hydrogenated amorphous T1 silicon was used as the photoconductor layer, but in addition, a multilayer V4 conductor layer was used.
Metal electrode with f structure/n type-1 type-p type a-8i type I/
Similar results can be obtained in a sensor with a transparent positive electrode and a reverse metal electrode/p-type-1-n-type 3-8i:H/transparent electrode structure.
第１図、第２図は本発明にかがン）カラーに１．稍読取
素イを示す概略ｔ１り成因であり、第１図は正面図、第
２図は第１図に示した正面図の八−Ａ斤引ｊＨ１ｉ面図
である。第３図は本発明の一実施件１を示すカラー原Ｄ
ｉ １Ｆｆｅ取装置の概略回路図、第４ ［：：１（ａ
） 、 （ｂ＋＋、＋、不九四の実施により得られる各
波長の９ｖ−に対Ｊるｌ′１′、１（ｉ。
流の値を示すグラフであり第４図（ａ）＋１．ノンバイ
ノ゛ス時、第４図（ｂ）ｉｊ−５Ｖバイアス時衛示して
いる。
第５［図は本発明の読取素子により得られるタングステ
ンランプを照明用光汀としたときのＳ ｌ／ Ｓ ２特
性を示ずグラフである。
１ 絶ｈｔｔ＋ノー、板、２−下部電極、３ ブ〔，
４Ｉｊ体、４ ｉ委トカ１祝（ス、 ５− カシー原
私読Ｊｌυネ了−２６、８・スイッチ、７・・バイアス
ｉｌｉ、 ＩＮ、９・・・イ１ｊ−号濱ｊ’？ Ｒ（’
第”図 ７，４互
第２図
第３図
０ＩＪｔ
第４図
叫
１−−１ 、−−Ｊ−−−−ニー
□
０ ５００ ６００ ７００ （
ｎｍ）邊 ）モ
第５図
５００ ６００ ７００
（ｎｍ）彼 ｋ−1 and 2 are based on the present invention) Color 1. FIG. 1 is a front view, and FIG. 2 is an 8-A horizontal view of the front view shown in FIG. 1. FIG. 3 is a color original D showing one embodiment 1 of the present invention.
i Schematic circuit diagram of 1Ffe extraction device, No. 4 [::1(a
), (b++, +, is a graph showing the value of J'1', 1(i. Fig. 4(b) shows the S l/S 2 characteristics when the tungsten lamp obtained by the reading element of the present invention is used as the illumination light source. It is a graph without showing. 1 Absolute htt + no, plate, 2 - lower electrode, 3 b [,
4Ij body, 4 i committee toka 1 congratulations (su, 5- Kashihara private reading Jlυne completed-26, 8 switch, 7...bias ili, IN, 9...I1j-issue Hamaj'? R( '
Figure 7 and 4 Alternate Figure 2 Figure 3 0IJt Figure 4 Shout 1--1 , --J----Knee□ 0 500 600 700 (
nm) side )mo Fig. 5 500 600 700
(nm) he k-
Claims (4)
に値の異なる任意のバイアス電圧加えることによって前
記光電変換素子から得られる前記各々のバイアス電圧に
応じた少なくとも２つの光電変換電流を演算しその＠算
結果から照射されたブ（−の色を判別することを特徴と
するカラー月１稿読取方法。(1) Light ff1. By irradiating the conversion element with the same light and applying arbitrary bias voltages with different values, at least two photoelectric conversion currents corresponding to the respective bias voltages obtained from the photoelectric conversion element are calculated, and irradiation is performed from the @ calculation result. A color monthly draft reading method characterized by determining the color of a negative sign (-).
、その上に光導電体さらにその上に透明型棒をそれぞれ
７目ｑした構造であることを特徴とする特許請求の範囲
第（１）項記載のカラー原稿読取方法。(2) The photoelectric conversion element has a structure in which a goldstone electrode is placed on an insulating substrate, a photoconductor is placed on top of the goldstone electrode, and transparent rods are placed on top of the photoconductor, and transparent rods are placed on top of the goldstone electrode. ) Color document reading method described in section.
特徴とする特許請求の範囲第（１）項記載のカラー原稿
読取方法。(3) The color original reading method according to claim (1), wherein the calculation is one of four arithmetic calculations.
値であることを特徴とする特許請求の範囲第（１）項記
載のカラー原稿読取方法。(4) The color document reading method according to claim (1), wherein the calculation result is a value that is uniquely determined for each color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57209923A JPS5999863A (en) | 1982-11-29 | 1982-11-29 | Color original reading method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57209923A JPS5999863A (en) | 1982-11-29 | 1982-11-29 | Color original reading method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5999863A true JPS5999863A (en) | 1984-06-08 |
| JPH0328872B2 JPH0328872B2 (en) | 1991-04-22 |
Family
ID=16580900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57209923A Granted JPS5999863A (en) | 1982-11-29 | 1982-11-29 | Color original reading method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5999863A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60187959U (en) * | 1984-05-23 | 1985-12-12 | 株式会社山武 | External storage device control device |
| JPS6258119A (en) * | 1985-09-06 | 1987-03-13 | Minolta Camera Co Ltd | Color sensor |
| US4804833A (en) * | 1985-09-06 | 1989-02-14 | Minolta Camera Kabushiki Kaisha | Color sensing method and device therefor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5546628A (en) * | 1978-09-28 | 1980-04-01 | Fujitsu Ltd | Timing phase synchronization system |
-
1982
- 1982-11-29 JP JP57209923A patent/JPS5999863A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5546628A (en) * | 1978-09-28 | 1980-04-01 | Fujitsu Ltd | Timing phase synchronization system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60187959U (en) * | 1984-05-23 | 1985-12-12 | 株式会社山武 | External storage device control device |
| JPS6258119A (en) * | 1985-09-06 | 1987-03-13 | Minolta Camera Co Ltd | Color sensor |
| US4804833A (en) * | 1985-09-06 | 1989-02-14 | Minolta Camera Kabushiki Kaisha | Color sensing method and device therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0328872B2 (en) | 1991-04-22 |
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