JPS5830738A - Self-timer device for camera - Google Patents

Self-timer device for camera

Info

Publication number
JPS5830738A
JPS5830738A JP56129173A JP12917381A JPS5830738A JP S5830738 A JPS5830738 A JP S5830738A JP 56129173 A JP56129173 A JP 56129173A JP 12917381 A JP12917381 A JP 12917381A JP S5830738 A JPS5830738 A JP S5830738A
Authority
JP
Japan
Prior art keywords
output
terminal
volume
voltage
timer
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
Application number
JP56129173A
Other languages
Japanese (ja)
Other versions
JPS6253812B2 (en
Inventor
Nobuyuki Suzuki
信行 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP56129173A priority Critical patent/JPS5830738A/en
Priority to DE19823230710 priority patent/DE3230710A1/en
Publication of JPS5830738A publication Critical patent/JPS5830738A/en
Priority to US06/712,335 priority patent/US4641937A/en
Publication of JPS6253812B2 publication Critical patent/JPS6253812B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00Details of cameras or camera bodies; Accessories therefor
    • G03B17/18Signals indicating condition of a camera member or suitability of light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shutter-Related Mechanisms (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)

Abstract

PURPOSE:To make the user hear surely the tone indicating the time of a self- timer, by controlling the sound volume of a sound producing material for indicating the time of the self-timer in accordance with an ambient noise volume. CONSTITUTION:A sound producing material 12 functions as a microphone to generate an electric signal corresponding to the ambient noise volume, and this signal is detected by a detecting circuit consisting of a high-input impedance amplifier 14, a diode 15, a capacitor 17, etc. A detection output corresponding to this noise volume is compared with set values of comparators 21 and 22, and the comparison result is stored in D type FFs 27 and 28, and analog switches 4 and 5 are controlled to select resistances 6, 7, or the like. Thus, the driving signal of the sound producing material 12 through an oscillator 1, a frequency divider 2, etc. is changed to control the volume of the Fone for reporting the time of a timer from the sound producing material 12 in accordance with the ambient noise volume. Consequently, even if the ambient noise is changed, the user hears accurately the tone indicating the time of the timer.

Description

【発明の詳細な説明】 本発明はカメラのセルフタイマー装置、特にセルフタイ
マーの動作表示素子に発音体を用いて、その音量を周囲
の騒音量に応じて変化させる七ルアタイ!−装置に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention is a self-timer device for a camera, particularly a self-timer device that uses a sounding body as an operation display element, and changes the sound volume according to the amount of surrounding noise. - Concerning equipment.

カメラのセルフタイマーの動作表示に発音体を用い、使
用者に音でセルフタイマー動作中を知らせるカメラ線肌
に公知である。しかし、斯様なカメラに於ては発音体よ
り発せられる音量は一定であるため、周囲の騒音が大き
い場合は音のマスキング効果のため発音体からの音が聞
き取り難いという問題を生じて−る。また、それは逆に
静かな場所で音か発せられると、他人に迷惑をかける虞
れがあるばかシか、使用者が周囲よシ注目されてかたく
な〉、自然な写真が撮り難いという問題も生じる。
A sounding body is used to indicate the operation of a camera's self-timer, and it is well known in the art that a sounding body is used to notify the user through sound that the self-timer is operating. However, in such a camera, the volume emitted from the sounding body is constant, so when the surrounding noise is large, the problem arises that it is difficult to hear the sound from the sounding body due to the sound masking effect. . On the other hand, if a sound is emitted in a quiet place, there is a risk that it may disturb others, or the user may become obstinate and attract attention from those around them, and it may be difficult to take natural-looking photos. .

従って以上の問題の対策として発音体からの音量をスイ
ッチで切換え可能とするといった提案がなされているが
、それとても七ルアタイマー動作中に周囲の騒音量が変
化した場合には対策としては十分に有効なもので杜ない
Therefore, as a countermeasure to the above problem, a proposal has been made to make it possible to change the volume from the sounding element with a switch, but this is sufficiently effective as a countermeasure if the amount of surrounding noise changes while the seven-lua timer is operating. It's not true.

本発明は上記の如き同層に鑑みてなされたもので、その
目的とすると(ろはセルフタイマー動作時に周囲の騒音
が変化した場合でも周囲の騒音量を検知して、その量に
応じて発音体の音量を自動的に制御し使用者にその動作
を適正な音量にて知らしめる如き構成したカメラのセル
7タイ!−装置を提供することKある。以下、本発明の
具体的実施例について図面を参照して説明する。
The present invention was made in view of the above-mentioned problems, and its purpose is to detect the amount of surrounding noise even if the surrounding noise changes when the self-timer is operating, and to generate sound according to the amount. It is an object of the present invention to provide a camera cell-type device configured to automatically control the body volume and notify the user of the operation at an appropriate volume.Hereinafter, specific embodiments of the present invention will be described. This will be explained with reference to the drawings.

第1図は本発明を適用した回路の1実施例を示すブロッ
ク回路図である・lはタレツタパルスを発生する発振器
、!!は分周器で発振器lからのクロツタパルスをOL
Kgs子に人力し、異った分周出力をQm e Qll
l端子よシ出力する。そしてその分周比は9膳の方が太
き−ものとする03F!ム夏り回路、番、δはアナジグ
スイッチでg@子ボ高レベルにへ の亀、1端子に接続され、8は前記抵抗ツとアース間に
接続されて−る。9は増幅器で後述の発音体IRを駆動
するに十分利得を有するものである。
FIG. 1 is a block circuit diagram showing one embodiment of a circuit to which the present invention is applied.l is an oscillator that generates a taller pulse, ! ! is a frequency divider that converts the clock pulse from oscillator l to OL.
Manually output different frequency divided outputs to the Kgs child.
Output from l terminal. And the frequency division ratio is 03F, which is thicker for 9! In the summer circuit, number δ is connected to the terminal 1 of the resistor 8, which connects g to the high level with an analog switch, and 8 is connected between the resistor 2 and ground. Reference numeral 9 denotes an amplifier having a gain sufficient to drive a sounding body IR, which will be described later.

10.111aアナ四ダスイツチで動作li4,5と同
一であり、B端子はいずれも後述の発音体の一方の端子
に接続され、ム端子に関してはアナジグスイッチlOは
増幅器9の出力端子に、アナログスイッチlli!後述
の増幅器14の入力端子にそれぞれ接続されて−る。1
2は発音体でこの両端に断読した電圧を加えると音が発
生し、開放状態でその両端間に音圧に応じた電圧が発生
するものでスピーカー、圧電ブザー等が適用される。1
3祉反転器で分局器2のQa+端子の出力を反転する。
10. Operation with 111a analog four-way switch It is the same as li4, 5, the B terminal is connected to one terminal of the sounding body described later, and as for the mu terminal, the analog switch lO is connected to the output terminal of amplifier 9, Switch lli! They are respectively connected to input terminals of an amplifier 14, which will be described later. 1
Reference numeral 2 denotes a sounding element, which generates sound when a voltage is applied to both ends thereof, and in an open state, a voltage corresponding to the sound pressure is generated between both ends, and speakers, piezoelectric buzzers, etc. are used. 1
The output of the Qa+ terminal of the branching device 2 is inverted by the 3-wire inverter.

14は高人力インピーダンスの増幅器で、アナログスイ
ッチ11のSt8子が高レベルの時A、B間が短絡され
、発音体12と増幅器14が接続される。そして増幅器
14ij高入力インピーダンスであるため、発音体1g
Fi開放状態と等価であり、発音体12より出力される
電圧を増1lIi器14で増幅する。1B#iダイオー
ド、16は抵抗器、17はコンデンサで増幅器14から
の出力をこの3素子で平均値検波する。18は定電圧回
路、19、go#′i抵抗器で抵抗器1G、20の接続
点で定電圧回路1’ aの電圧の分圧を得て−る。21
121は電圧比較器で、21ij定電圧回路18の電圧
と平均値検波用°力電圧(抵抗16とツンデンナl〕の
接続点の電圧)とを比較し後者が大き一場合高レベルを
出力し、また電圧比較@ J! 、1! #i定電圧回
路の分圧(抵抗器19と20の接続点の電圧)と平均値
検波出力とを比較し、後者が太き一場合祉高レベルを出
力する。RB、14は反転器であ伽、各々電圧比較器a
x、:axの出力を反転する。
Reference numeral 14 denotes a high impedance amplifier, and when the St8 terminal of the analog switch 11 is at a high level, A and B are short-circuited, and the sounding body 12 and the amplifier 14 are connected. Since the amplifier 14ij has a high input impedance, the sounding body 1g
This is equivalent to the Fi open state, and the voltage output from the sounding element 12 is amplified by the amplifier 14. 1B#i diode, 16 a resistor, 17 a capacitor, and the average value of the output from the amplifier 14 is detected by these three elements. Reference numeral 18 denotes a constant voltage circuit, and 19, a go#'i resistor, obtains a divided voltage of the voltage of the constant voltage circuit 1'a at the connection point between the resistors 1G and 20. 21
121 is a voltage comparator which compares the voltage of the constant voltage circuit 18 and the average value detection power voltage (voltage at the connection point between the resistor 16 and the voltage converter 1), and outputs a high level if the latter is larger; Also voltage comparison @ J! , 1! #i The divided voltage of the constant voltage circuit (voltage at the connection point of resistors 19 and 20) is compared with the average detection output, and if the latter is thick, a high level is output. RB and 14 are inverters, and each voltage comparator a
x,: Invert the output of ax.

am、16#iムMD回路で25は電圧比稜器21の出
力と電圧比較器220反転出力のムyn(fllk理積
)を出力する。ムID回路26ij電圧比較器xiの反
転出力と電圧比較器22の出力のムMDを出力する。2
フ、gaijD形フリップ71RツブでそれぞれOLK
端子に分周器2のQm端子が接続されSD形フリップ7
wツブtフのD端子に#iムWXJ回路J!!1の出力
#I!続され、pmフリップフーツプtaのp端子Ka
ム茸り@路怠6の出力が接続されて−る。そしてこのD
形7リフプ7四ツブ2フ、xattn端子に加えられた
入力レベルがOLE端子のパルスの立ち上がシでqに伝
送される。teFi反転器でD形フリップフロップ28
のq端子の出力を反転し、アナログスイッチ5のS端子
を制御する。p形7リツプフロツプ27のQfi子はア
ナ費グスイッチ4のSjI子に接続され8端子を制御す
る。
am, 16 #i and 25 in the MD circuit 25 output the output of the voltage ratio device 21 and the inverted output of the voltage comparator 220 (fllk product). The MID circuit 26ij outputs the inverted output of the voltage comparator xi and the MMD of the output of the voltage comparator 22. 2
F, gaij D type flip 71R tab respectively OLK
The Qm terminal of the frequency divider 2 is connected to the terminal of the SD type flip 7.
#imu WXJ circuit J to the D terminal of wtsubu tfu! ! 1 output #I! connected to the p terminal Ka of the pm flip hoop ta.
The output of Mushroom @ Road Slack 6 is connected. And this D
The input level applied to the xattn terminal is transmitted to q at the rising edge of the pulse at the OLE terminal. D type flip-flop 28 in teFi inverter
The output of the q terminal is inverted, and the S terminal of the analog switch 5 is controlled. The Qfi terminal of the p-type 7 lip-flop 27 is connected to the SjI terminal of the analog analog switch 4 to control the 8 terminals.

30FiD形79727四7プで0LKfi子に分周@
2のQn出力が入力され、D端子に分周器2のC1m出
力が入力される。その結果り形フリップ70ツブ5of
1Qt14子出力は分周11 J! f) 6m端子出
力波形をQn端子から出力されるパルスの半周期分遅ら
せたものとなる。31ij)ランジスタでエミッタは接
地され、コレクタは抵抗16とコンデン+17の接続点
に接続さ江て−る。そしてベースは後述の抵抗3JIを
介してDiフリップ7aツブ30のq端子に接続されて
−る。抵抗S2はp形フリップ7四ツブsOのq端子と
トランジスタ31のベースに接続されている。
30FiD type 79727 Frequency division into 0LKfi child @
The Qn output of frequency divider 2 is input to the D terminal, and the C1m output of frequency divider 2 is input to the D terminal. As a result, the shape flip 70 knobs 5of
1Qt14 child output is divided by 11 J! f) The 6m terminal output waveform is delayed by half the period of the pulse output from the Qn terminal. 31ij) The emitter of the transistor is grounded, and the collector is connected to the connection point between the resistor 16 and the capacitor +17. The base is connected to the q terminal of the Di flip 7a tube 30 via a resistor 3JI, which will be described later. The resistor S2 is connected to the q terminal of the p-type flip 7 sO and the base of the transistor 31.

以上の様な構成で第1図の動作!第a図を併用して説明
する。第2図社第λ図の回路の各接続線部■〜■の波形
図で、各波形の0レベルが低レベルをルベルが高レベル
を示し、横軸は時間軸を示す・ 発振器lからの出力が分局器2のOL1入力端に入力さ
れると、その結果QX1tQI!l端子から分周出力(
例えばQm端子から出力の周波数を工Kkig g Q
*端子のそれを工I1.とする。)が現われる。Qm端
子からの出力(第2図■)が低レベルの場合、反転器1
3のffl力は高レベルとなり、それがその8端子に接
続されているアナログスイッチ11は導通状態、Q鳳端
子の低レベルがその軸仔に接続されているアナログスイ
ッチ10は非導通状態となる。従って、発音体12はア
ナログスイッチl工を経由して、高入力インピーダンス
増幅g!I14に接続されることになる。このとき発音
体λ2は発音体として駆動されずに、それ自体がマイク
四ホンとして働き、発音体周囲の騒音を電圧に変換し、
その信号電圧を増幅器14に送に込む@(ialA図期
間Tゴ、T2,73に於ける波形@参照)そして、その
信号電圧は周Hの騒音が小さ一時は第2図波形@期間T
lのごとく、周囲の騒音が中程度の時FiT2のごとく
、周囲の騒音が太き一時はT3のごとく、騒音量に比例
したものとなる。そして、その電圧は高入力インピーダ
ンス増幅器14により増幅され、ダイオードi5、抵抗
16、コンデンサ17によって構成される平均値検波回
路により、検波されその波形は第2図16と17の接続
の 点の波形ののごとくなる。期間Tl、T2.T3A各々
の初期でその波形の立ち上がりに時間がかかつているの
は、抵抗16、コンデンサ17の時定数によるものであ
る。そこで、その検波出力社電圧比較器2L、22のマ
イナス入力端子に入力され、定電圧回路18の電圧及び
、抵抗19.20による定電圧回路18の電圧の分圧と
比較される。
The above configuration works as shown in Figure 1! This will be explained with reference to Fig. a. In the waveform diagram of each connection line part ■ to ■ of the circuit shown in Figure 2, the 0 level of each waveform indicates a low level, the level indicates a high level, and the horizontal axis indicates the time axis. When the output is input to the OL1 input terminal of branching unit 2, the result is QX1tQI! Frequency division output from l terminal (
For example, calculate the output frequency from the Qm terminal.
*Maintenance of the terminal I1. shall be. ) appears. When the output from the Qm terminal (■ in Figure 2) is low level, inverter 1
The ffl power of 3 becomes a high level, and the analog switch 11 to which it is connected to its 8 terminal is in a conductive state, and the analog switch 10 to which the low level of the Q terminal is connected to its shaft is in a non-conducting state. . Therefore, the sounding body 12 is amplified by high input impedance via the analog switch l! It will be connected to I14. At this time, the sounding body λ2 is not driven as a sounding body, but acts as a microphone and converts the noise around the sounding body into voltage.
The signal voltage is sent to the amplifier 14 (see the waveform @ in period T go, T2, 73 in the ial A figure), and the signal voltage has a small noise in the period H, and at one time the signal voltage appears in the waveform @ period T in the figure 2.
When the ambient noise is moderate, as in 1, the noise level is proportional to the amount of noise, as in FiT2, and when the ambient noise is thick, as in T3. Then, the voltage is amplified by the high input impedance amplifier 14, and detected by the average value detection circuit composed of the diode i5, the resistor 16, and the capacitor 17. It becomes like this. Period Tl, T2. The reason why it takes time for the waveform to rise at the beginning of each T3A is due to the time constants of the resistor 16 and capacitor 17. Therefore, the detected signal is input to the negative input terminals of the voltage comparators 2L and 22, and is compared with the voltage of the constant voltage circuit 18 and the voltage divided by the resistor 19.20.

ここで定電圧回路18の電圧及び抵抗19 、20によ
る分圧は検゛波出力と関連して適当に設定されである。
Here, the voltage of the constant voltage circuit 18 and the voltage divided by the resistors 19 and 20 are appropriately set in relation to the detected wave output.

次に周囲の騒音量の3つの場合についてその先の動作を
説明する。
Next, the subsequent operations will be explained for three cases of ambient noise amount.

(υ騒音量が小さ一場合(jlffi図期関Tl)検波
出力が定電圧回路1・の電圧及び分圧よシも低−ため、
電圧比較器21.22の出力は共に低レベルとなる。そ
のためAND回路25の出力(第2図@)は低レベル、
反転器23. !44は共に高レベルとなるためムMD
回路26の出力(第2図の)社高レベルとなる。そのた
めD形7リツプ7四ツブ2?のD端子社低レベル、D形
アリツブフロップ28のD端子は高レベル(第2図■)
となる。またD形フリップフシツブ2? 、28のoL
x端子端子周分周器2a+端子に接続されて−るため、
期間?lの終了時点即ちc4.vmgs子波形0の立ち
上がり時点でD形フリップ70ツブのD端子の信号がq
端子に現われる。
(When the noise level is small (jlffi), the detection output is low as well as the voltage and partial voltage of the constant voltage circuit 1.
The outputs of voltage comparators 21 and 22 both become low level. Therefore, the output of the AND circuit 25 (Fig. 2 @) is at a low level,
Inverter 23. ! 44 are both at a high level, so MD
The output of the circuit 26 (as shown in FIG. 2) is at the high level. Therefore, D-type 7 lips 7 4 tubes 2? The D terminal of the D terminal is low level, and the D terminal of the D type flop 28 is high level (Fig. 2 ■)
becomes. Also, D type flip flip 2? , 28 oL
Since the x terminal is connected to the frequency divider 2a+ terminal,
period? 1, that is, c4. At the rising edge of vmgs child waveform 0, the signal at the D terminal of the D-type flip 70 is q.
Appears on the terminal.

それ故期間Tlの終了時点でD形フリップフロップ2マ
のq端子の出力(第2図6)は低レベル、アナログスイ
ッチ4のS端子は低レベルのためA、S端子は非導通状
態となる・またD影フリップ70ツブ28の★端子の出
力(第2図G)h高レベル反転W29の出力は低レベル
アナログスイッチ5の8端子は低レベルのためム、B1
1子は非導通状態となる。
Therefore, at the end of period Tl, the output of the q terminal of the D-type flip-flop 2 (Fig. 2, 6) is at a low level, and the S terminal of the analog switch 4 is at a low level, so the A and S terminals become non-conductive.・Also, the output of the ★ terminal of the D shadow flip 70 knob 28 (Fig. 2 G) h High level inversion The output of W29 is a low level The 8 terminal of the analog switch 5 is at a low level, so B1
One child becomes non-conductive.

即ち、抵抗6.7、自によシ分圧回路が構成さ、れムM
D回路3の出力の分圧が増幅器9に入力される。ところ
でムHD回路3の入力端子Ka分周器2のQ”*Qmj
l子が接続されて−る$ 、Qmは期間′r1が終了し
て!2が開始する間祉高レベルを保ち絖け、qmtfl
KI!、が出力されて−るため、ムMD回路3の出力1
jlK五、で断続する高、低しベ#ボ出力される。そし
てその出力は前述の様に分圧されて増幅器9に入力され
発音体12を駆動するに十分亀出力まで増幅される。ま
たアナ窒ダスイッチlOのS端子は期間τl終了から〒
8開始まで高レベルとなるためアナログスイッチエOの
人、S端子は導通状態となシ、発音体IJIFi増幅器
9の出力によ)駆動され基本周波数XIJ[、の小さな
音(抵抗6、〕、8による分圧分だけ小さ−)が発せら
れる。
That is, a voltage dividing circuit is constructed by resistor 6.7, and M
A divided voltage of the output of the D circuit 3 is input to the amplifier 9. By the way, Q''*Qmj of the input terminal Ka frequency divider 2 of the HD circuit 3
l child is connected -$, Qm ends period 'r1! Maintain a high welfare level while 2 starts, qmtfl
KI! Since , is output, the output 1 of the MD circuit 3
Intermittent high and low signals are output at jlK5. Then, the output is voltage-divided as described above and input to the amplifier 9, where it is amplified to an output sufficient to drive the sounding element 12. In addition, the S terminal of the analog switch lO is set from the end of the period τl to
Since the level remains high until the start of 8, the S terminal of the analog switch is not conductive, and the sound generator IJIFi is driven by the output of the amplifier 9) to make a small sound at the fundamental frequency XIJ (resistance 6), -) is emitted which is smaller by the partial pressure due to 8.

またD形7リツプ7胃ツブ30のq端子は分周器2のq
鳳出カポQn出力のパルスの半周期分遅れ念波形が出力
され、その出力はトランジスタ31のベース電流制限用
の抵抗32を介して、トランジスタ31のベースに加え
られる。従与±、そのD形7リツプ70ツブのq端子の
出力が高レベルの間トランジスタ!slはオンしてコン
デンサエフの電荷−5放電され、次の期間!2の検波動
作に備えるのである。ここで、トランジスタ31がオン
している時点をD形フリップ70ツブ30により分周a
2の9m出力よや9m出力のグルスの牛i期分遅らせで
あるのけ、トランジスタ31′Mオンして検波出力(第
2図θ点)が変化し、それによ)D形7リツプフロツプ
2フ、28のp端子の信号が変化するが、その変化する
タイミングとD形7リツプ7vツブ2フ、28のOLK
端子に加えられるパルスの変化するタイミングとが一致
して誤動作を起むすことを防止したものである。
Also, the q terminal of the D-type 7 lip 7 stomach tube 30 is connected to the q terminal of the frequency divider 2.
An optical waveform delayed by a half period of the pulse of the Oshide capo Qn output is output, and the output is applied to the base of the transistor 31 via the resistor 32 for limiting the base current of the transistor 31. As long as the output of the q terminal of its D-type 7-lip 70-tube is at a high level, the transistor! sl is turned on and the charge of capacitor F is discharged by -5, and the next period! This is in preparation for the second detection operation. Here, the time point when the transistor 31 is on is divided by the frequency a by the D-type flip 70 tube 30.
2's 9m output or the 9m output is delayed by i period of the 9m output, the transistor 31'M is turned on and the detection output (point θ in Figure 2) changes, which causes the D-type 7 flip-flop 2 , the signal at the p terminal of 28 changes, but the timing of the change and the D type 7 lip 7 v tube 2 p, 28 OLK
This prevents malfunctions due to coincidence of the timing of changes in the pulses applied to the terminals.

(匂i音量が中程度の場合(第2図の期間!2)検波出
力が定電圧回路18の電圧より低いが、抵抗19.2.
0による分圧よ)も高いため、電圧比較器と1の出力は
低レベル、22Fi高レベルと取る。そのためムND回
路25の出力(第2図@)は低レベル、反転器24の出
力は低レベルと亀ゐためムMD回路2もの出力(第2図
■)も低レベルとなる。そのためD形7リツプ70ツブ
2フ、28のp端子は共に低レベル俤2図@@参照)と
なる。ここで28のD端子が高レベルから低レベルに変
化する時点がT2の開始時点よ多連れているのは、検波
回路(15,1g、l))の時定数による吃のである。
(When the scent volume is medium (period 2 in Figure 2), the detection output is lower than the voltage of the constant voltage circuit 18, but the resistor 19.2.
Since the voltage (divided voltage by 0) is also high, the outputs of the voltage comparator and 1 are taken as low level and 22Fi is taken as high level. Therefore, the output of the ND circuit 25 (@) in FIG. 2 is at a low level, the output of the inverter 24 is at a low level, and the output of the MD circuit 2 (2 in FIG. 2) is also at a low level. Therefore, the D-type 7 lip 70 tube 2 pin and the p terminal 28 are both at a low level (see Figure 2). The reason why the time at which the D terminal 28 changes from high level to low level is longer than the start time of T2 is due to stuttering due to the time constant of the detection circuit (15, 1g, l)).

そこで1期間T2の終了時点でD形7リツブ70ツブ2
7.28のq端子(第2図6■)社共に低レベルとなる
故アナーグスイッチ4のS端子は低レベル、アナログス
イッチ心の8端子は高レベルとなる。それ故アナpグス
イッチ4のA1BMA子は非導通、アナジグスイッチ5
のそれは導通状態とな〉、ムMD回路3の、出力は抵抗
6.8の分圧ボ増幅[99の人、力端子に送)込まれる
ことKなる・期間TJ!の終了から!3の開始までFi
(1)の場合と同様ムHD回路3の出力は工に−で断続
する高、低レベルが出力され、その出力は前述の様に分
圧されて増幅器9に入力され発音体12を駆動するに十
分な出力まで増幅される。但し、(1)の場合に比べて
分圧比が小さ−ため増幅I1句の出力は(ηの場合よシ
も大きなものとなる。またコンデンす1)の電荷の放電
に関しては(υと同様である。また、(1)の場合と同
様アナレグスイッチlOのS端子は期間〒2終了からτ
5RfttJtで高レベルとなるため、アナレグスイッ
チ10のム、Bgs子は導通状態となに、発音体l糞は
増幅器9の出力によ動駆動され、基本周波数工K)1.
の(ηの場合よシも大きな中程度の音が発せられる。
Therefore, at the end of one period T2, D-type 7 ribs 70 ribs 2
7.28's q terminal (Fig. 2, 6) is both at a low level, the S terminal of the late Analog switch 4 is at a low level, and the 8 terminal of the analog switch core is at a high level. Therefore, the A1BMA terminal of analog pg switch 4 is non-conductive, and pg switch 5
is in a conductive state>, the output of the MD circuit 3 is amplified by the voltage division of the resistor 6.8 [99 people, sent to the power terminal], and the period TJ! From the end of! Fi until the start of 3
As in the case (1), the output of the HD circuit 3 is outputted at high and low levels that are intermittent at -, and the output is divided as described above and input to the amplifier 9 to drive the sounding element 12. is amplified to a sufficient output. However, since the voltage division ratio is smaller than in case (1), the output of the amplification I1 clause is also larger than in the case of (η. Also, regarding the discharge of the charge in the condenser 1), it is the same as (υ). Also, as in the case (1), the S terminal of the analog switch IO is τ from the end of period 〒2.
Since the level becomes high at 5RfttJt, the M and Bgs terminals of the analog switch 10 are in a conductive state, and the sounding element 1 is driven by the output of the amplifier 9, and the fundamental frequency switch 1.
(In the case of η, a loud medium sound is also emitted.

(り騒音量が大きな場合(第2図の期閏丁3)検波出力
が定電圧回路18の電圧及び抵抗19.20による分圧
より1高−ため電圧比較!21%22の出力ttqに高
レベルとなる。そのためD形フリップ70ツブ25のD
端子(第2図O)は高レベル、D形7リツプフロツプ2
6のD!II子(第2図■)は反転・器23.24の出
力によ〉低レベルとなる。ここでD形7リツプ7oツブ
2ツのDH1子が低レベルから高レベルに変化する時点
p、T3の開始時点より遅れているのけ、検波回路(1
5,l a、l 7)の時定数によるものである。そこ
で、期間T3の終了時点でD形7リツプ7寵ツブ27の
Q端子(第2図6) #i高レベル、シ形7リツプフロ
ツプ28のQ端子(第2図G)は低レベルとなる故、ア
ナレグスイッチ4.5の8fs子は共に高レベルとなる
。それ故アナ宵グスイッチ4.5のム、S端子は共に導
通状態とな9、AHD・回路3の出力はそのtt増幅器
9に送シ込まれることになる。期間−rsの終了からQ
3波形の立ち下がり時点までは(呻、(匂の場合と同様
にAND回路3の出力はIKi[、で断続する高、低レ
ベルが出力され、その出力は前述の様にそのまま増S器
pに入力される。従って(υ、(2)の場合に比べて増
幅器9の出力社殿も大きなも′のとなる。
(When the amount of noise is large (interval 3 in Figure 2), the detected output is 1 higher than the voltage of the constant voltage circuit 18 and the voltage divided by the resistor 19.20, so the voltage comparison!21%22 output ttq is high. level.Therefore, the D type flip 70 knob 25
Terminal (Fig. 2 O) is high level, D type 7 lip-flop 2
6 D! The output of the inverter 23 and 24 brings the II terminal (■ in FIG. 2) to a low level. Here, the detection circuit (1
This is due to the time constant of 5, l a, l 7). Therefore, at the end of period T3, the Q terminal of the D-7 lip flop 27 (FIG. 2, 6) #i becomes high level, and the Q terminal of the S-7 lip-flop 28 (FIG. 2, G) becomes a low level. , the 8fs children of analog switch 4.5 are both at high level. Therefore, both the M and S terminals of the analog switch 4.5 are in a conductive state 9, and the output of the AHD circuit 3 is sent to its tt amplifier 9. Q from the end of period −rs
Until the falling point of the 3 waveforms, the AND circuit 3 outputs intermittent high and low levels at IKi[, as in the case of smell, and the output is directly sent to the S intensifier p as described above. Therefore, the output power of the amplifier 9 is also large compared to the case of (υ, (2)).

また、コンデンす1フの電荷の放電に関しては(υと同
様である。
Also, regarding the discharge of the charge in the capacitor 1, it is the same as (υ).

また、((転)、α)の場合と同様アナ讐グスイッチ1
゜のB1a子は期間!8終了からQm波形立ち下がヤ時
点まで、高レベルであるため、アナログスイッチ10の
A、B端子は111通状態となり、発音体12#i増幅
器9の出力罠より駆動され、基本周波数XK11.の(
η、ψ)の場合よりも大きな音が発せられる。
Also, as in the case of ((turn), α), the analog switch 1
゜'s B1a child is a period! Since the fall of the Qm waveform is at a high level from the end of 8 to the point y, the A and B terminals of the analog switch 10 are in the 111 state, driven by the output trap of the sounding element 12#i amplifier 9, and the fundamental frequency XK11. of(
A louder sound is emitted than in the case of η, ψ).

本実施例に於いては周囲の騒音量を3段階に分け、それ
に対応して発音体の音量を制御する本のであるが、3段
階を更に細かく例えば5R階、10段r・にするの−容
易てあ)、肩囲の騒音量に応じた適正前を得ることがで
きる。
In this example, the amount of ambient noise is divided into three levels, and the volume of the sounding body is controlled accordingly, but the three levels can be made even more detailed, for example, on the 5th floor and the 10th level. It is possible to obtain the appropriate amount of noise according to the shoulder circumference.

以上説明した様に、カメラの七ルアタイ!−の動作表示
に、カメラに内蔵された発音体より断続的に発せられる
音を用−るカメラに於いて、セルフタイマー動作中で音
の断続の内断、即ち音が停止している期間に1力メラ周
囲の騒音量を検知し、その量が太き一場合、音が発生し
ている期間に発音体の音量を大きくシ、騒音量が小さい
、即ち静かな場合に発音体の音量を小さくするものであ
るから、使用者にとってセルフタイマー動作表示音の検
知度合は周囲の騒音量にかかわらずは埋一定である上、
騒音量が変化してもそれに対応して発音体の音量が自動
的に変化する利点がある。
As explained above, seven days of camera time! - In cameras that use sounds emitted intermittently from a sounding element built into the camera to indicate the operation, the self-timer is activated and the sound is intermittent, i.e. during the period when the sound is stopped. 1) Detects the amount of noise around the camera, and if the amount is large, increases the volume of the sounding body while the sound is being generated, and increases the volume of the sounding body when the noise level is small, that is, when it is quiet. Since it is made to be small, the degree of detection of the self-timer operation display sound remains constant for the user regardless of the amount of surrounding noise.
This has the advantage that even if the amount of noise changes, the volume of the sounding body automatically changes accordingly.

それに加えて、発音体と騒音検知素子が同一であるため
、電気回路をIO化した場合には本発明を実施するに当
り、コストアップとならなψ利点もあり、その効果は大
なるものである。
In addition, since the sounding body and the noise detection element are the same, there is an advantage in implementing the present invention when the electric circuit is converted into IO without increasing the cost, and the effect is significant. be.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明を適用した回路の1実施例を示すプルツ
ク回路図で、第2図はその動作を説明するためのタイミ
ング波形図である。 1001発振器、2 、、、分局器”h ’、’ e*
*アナ賞グスイッチ、9.6m増幅器、10.11.、
、アナログスイッチ、12゜00発音体、14□、高入
力インピーダンス増幅器、18.、、定電圧回路、21
S2218.電圧比較器。 特許出願人 キャノン株式会社 さp片 代理人丸島儀−安1〕。
FIG. 1 is a pull circuit diagram showing one embodiment of a circuit to which the present invention is applied, and FIG. 2 is a timing waveform diagram for explaining its operation. 1001 oscillator, 2,, branch unit "h',' e*
*Anna prize switch, 9.6m amplifier, 10.11. ,
, analog switch, 12°00 sounding body, 14□, high input impedance amplifier, 18. ,, Constant voltage circuit, 21
S2218. voltage comparator. Patent Applicant: Canon Co., Ltd., Agent: Gi Yasu Marushima.

Claims (1)

【特許請求の範囲】 (1) カメラのセルフタイ!−の動作表示に、カメラ
に内蔵された発音体よ)断続的に発せられる音をMI/
2るカメラに於いて、カメラ局Nや騒音量を検知し、そ
の検知量に応じて、音が発破もれる期間の発音体の音量
を変化可能とすること置に於−で、セルフタイマー動作
中にカメラの周囲の騒音量が大なる時は、発音体の音量
を大きくシ、騒音量が小なる時祉発音体の音量を小さく
する仁とを特徴とするセルフタイマー装置・力 (3)特許請求PBjI1項記味のセルフタイマー装置
に於−て、騒音量検知部材と発音体とが同一部材である
ことを特徴とする七ルアタイマー装置。
[Claims] (1) Camera self-tie! - The operation display shows the sound that is emitted intermittently (from the camera's built-in sounding body).
The second camera detects the camera station N and the amount of noise, and according to the detected amount, the self-timer operates in a position where the volume of the sounding body during the period when the sound is not emitted can be changed. A self-timer device/force (3) that is characterized by increasing the volume of the sounding body when the amount of noise around the camera increases and decreasing the volume of the sounding body when the amount of noise is small. 7. A self-timer device according to claim PBjI, wherein the noise amount detection member and the sounding body are the same member.
JP56129173A 1981-08-18 1981-08-18 Self-timer device for camera Granted JPS5830738A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56129173A JPS5830738A (en) 1981-08-18 1981-08-18 Self-timer device for camera
DE19823230710 DE3230710A1 (en) 1981-08-18 1982-08-18 SELF-TIMER DEVICE FOR CAMERAS
US06/712,335 US4641937A (en) 1981-08-18 1985-03-14 Self-timer device for a camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56129173A JPS5830738A (en) 1981-08-18 1981-08-18 Self-timer device for camera

Publications (2)

Publication Number Publication Date
JPS5830738A true JPS5830738A (en) 1983-02-23
JPS6253812B2 JPS6253812B2 (en) 1987-11-12

Family

ID=15002944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56129173A Granted JPS5830738A (en) 1981-08-18 1981-08-18 Self-timer device for camera

Country Status (1)

Country Link
JP (1) JPS5830738A (en)

Also Published As

Publication number Publication date
JPS6253812B2 (en) 1987-11-12

Similar Documents

Publication Publication Date Title
US3922665A (en) Apparatus and method for maintaining operator alertness
CA1119024A (en) Chime tone audio system utilizing a piezoelectric transducer
US4204400A (en) Electronic metronome
JPS5830738A (en) Self-timer device for camera
JPS62138896A (en) Multi-signal alarm
JPH0218518B2 (en)
JPH0223874B2 (en)
US4328485A (en) Binary alarm
JPS5858411A (en) Distance displaying method for obstruction detector utilizing ultrasonic wave
JPS599443Y2 (en) alarm generator
JPS6235075Y2 (en)
JPS6316208Y2 (en)
SU1231534A1 (en) Bird song simulator
JPH0522960Y2 (en)
JPS5679027A (en) Alarm device for car driver
JPS6318080Y2 (en)
JPS5911119B2 (en) electronic chime
KR880001133Y1 (en) Melody making apparatus
US4010329A (en) Crescendo control of signalling devices
JPH10214090A (en) Buzzer driving circuit
JPH048387Y2 (en)
JPS585410U (en) Ultrasound diagnostic equipment
JPS6025104Y2 (en) sound generator
JP2914663B2 (en) Sound signal formation circuit
JPS5928471Y2 (en) Siren oscillator starting circuit