JPS606929A - Method and device for automatic focus adjustment - Google Patents

Abstract

PURPOSE:To minimize the number of bits required for the calculation of data on the extent of driving and to shorten a transfer time by separating data on a conversion coefficient into an exponent part and an effective numeral and transferring them in series. CONSTITUTION:The light from an object of focusing after passing through an interchangeable lens LZ is received to calculate the amount of deviation from an expected focusing position, and a driving means LDR is driven to transmit the power to a focusing member 102, making a shift in image-formation position. In this case, characteristic data on the lens LZ for conversion to the extent of transmission driving is stored in the lens LZ fixedly. This data is separated into the high-order (m)-bit exponent part and the low-order (n)-bit effective number and transferred as (m+n)-bit data to a camera body BD in series to calculate the data on the extent of driving of the means LDR at the camera body side BD on the basis of transmitted data and data on the deviation amount. Consequently, the number of terminals for signal transfer between the main body BD and lens LZ is decreased to improve the reliability, and the transfer time is shortened.

Description

[Detailed description of the invention]

Technical field The present invention

[Passing through Nons [7 objects in focus are 15]
The camera body side detects the deviation lil of the imaging position jU of the object to be focused from the expected focal position by receiving the light of - The focus adjustment member of the withdrawal lens is moved by driving the φ & J Ω prevention means according to the evening. [Regarding the self-help focus adjustment method a) in which the self-help focus adjustment is made such that i<1 and the lJth self-help focus adjustment receiving lens. Calculate the drive amount of the drive means from the above J: Una self-help focus adjustment (J1 detected misalignment) (if one row is used, Z 1) f- of h4 1 ■ 1 of 1! -In the evening'&1
In the case of Momme), since there is a nearly proportional relationship between the suspension and the amount of drive, the deviation amount data 1) Inner hit 4 knife conversion coefficient)
By subtracting +1, the driving amount data is changed to j[I. Mechanical factors such as the configuration of this conversion coefficient (optical conditions such as the focal length of the interchangeable lens and the lens configuration, and the focus adjuster in the interchangeable lens)! Changes according to 1. That is, the width of the conversion coefficient differs depending on the interchangeable lens. 1; 1, import the data of the conversion coefficient on the camera body from the interchangeable lens, and transfer this data and camera to the interchangeable lens. It is possible to calculate the data of the four ribs from the data of the 7-dimensional deviation ml.However, since the value of this conversion coefficient changes for each interchangeable lens, the data of this conversion coefficient is Compatible with lenses (・If you try to make it possible, the number of pins will be large. If you transfer data of such conversion coefficients in parallel) As the number of terminals for transmitting and receiving signals increases, the reliability of data may decrease due to dust adhering to these terminals or poor contact between the terminals, and the transfer time may take longer if the data is transferred directly to 11. ) The present invention has the disadvantage that the pressure is calculated on the camera body side, and the drive amount data of the driving means is replaced with the conversion coefficient data of I). When the calculation is done on the side of the camera body, the data of the conversion coefficient can be transferred to the camera body without causing a BI mismatch. This is because the present invention (J, the data of the conversion coefficients have changed significantly, I
For the sieve of the recorder e-, the significant digit part of the data is used as data, and this data is transferred directly to the camera body. The outline of the camera system for automatic adjustment will be explained based on Fig. 1.
[dotted chain line] r: 1llll + J zoom 1 nons (1
-Z), (J side has camera body (81 pieces) (P, both sides (J side, respectively, through clutches (106) and (107) ()M sideways, connecting terminals ('JL1) ~ <Jl,, 5
), (J 131 > - (J 135) are electrically connected to τ. In this camera system), the zoom lens (l Use lens (71,-), master lens (ML
) The subject light passes through the central semi-transparent part of the reflecting mirror (108) of the camera body (13F) ), is reflected by the 1 nub mirror (109), and is reflected by the focus detection light receiving part (FLY'). The optical system is configured so that the light is received →t. The signal processing circuit (112) includes a focus detection light receiving section (F L
Based on No. 18 from Y), the deviation from the focused position (
11 is shown Resofocus fffllΔ1-1 and differential A-
Calculate the signal between the front pin and the rear pin in the direction of waste. The motor (M (')) is driven based on these (M), and its rotation is turned on (maslip t!14M (S I-
P), drive R side (+4) R), camera body side clutch (107), zoom l nozzle (1-Z) with fF
') is transmitted. In addition, the slip machine Jf/+ (S L
, P> is 1jb) when a predetermined 1 to 1 to 100 mph is applied to the driven part of the zoom lens (1, , Z) and ′[-
This is to prevent the nine detectives from hitting the target (MO). In the zoom lens (L7), the focus lens (
11) 11 members (10
2) has a female edge 1 screw formed on the inner periphery of the lens mount 1, which is fitted with a screw 1'a J: a fixing part integrated with the lens mount I (121). A male lip screw is formed on the outer periphery of (101). A large gear (103) is attached to the outer periphery of the focus adjustment part shrine (102).
-J, and this large gear (103)
104), and is connected to the lens side ludge ('t07) via the transmission UJ14tIi (105). As a result, the rotation of the main body (MO), the slip mechanism (SLP) of the camera body, the clutch (107
), a clutch on the lens side (106), a transmission mechanism in the lens (105), a small gear (10/l), and a large gear (103)
) to the focus adjustment unit (102), and the focus lens (102) is adjusted by the edge':1 ID screw.
is moved back and forth in the optical axis direction to adjust the focus. In addition, the encoder for monitoring the driving time of the lens (F i ) is located on the camera body (F3D).
-D R) and this encoder (ENC
) outputs a pulse corresponding to the amount of drive of the lens ([-1). Here, the rotational speed of C゛, t-ku (MO) is NM (1・o
t) 1. The number of pulses from the n]-da (E N C) is N, the resolution of the two [n]-da is ρ(1/rOt),
Encog (ENC) from the rotating shaft of the motor (MO>)
The reduction ratio of the mechanical transmission system from the mounting shaft of the motor (MO) to the mounting shaft of the camera body is set to 77".
The reduction ratio of the mechanical transmission system up to 07) is 11 @, the reduction ratio of the mechanical transmission system q) from the lens side latch <106') to the large gear (103) is μl, and the edge of the focus adjustment part (102) - 1 Id Lead I I-1(n+m/rot)
, the movement II4 of the focusing lens (F L ) is Δ
(If j (m river) and J, then N = ρ・μ[]・NM △d = NM−uθ・II L −1−L (i.e., Δ(1=−μ[3−N・μm ・l −11/ (ρ・μ
P)・・・・・・・・・・・・・・・・・・・・・
- The relational expression (1) is obtained. Also, when the lens is moved by Δd (mn+), 4y, 1 no., the ratio of the shift of the south surface Δ1-(m...) to Δ'd is K O12-Δd/Δl-...・・・・・・
・・・・・・・・・・・・・・・＜2) r Expressed as the formula (
1), (2) J:SN =-(0・μP)/μB)・Koll・ΔL/(t
t L・1. −H)・・・・・・・・・・・・・・・
...The relational expression (3) is expressed as 1; Here, KL = t< op/ (μL ・1-tI
) ・・・ ・・・ ・・・ ・・・ ・・・ (4
)t< r tree −ρ ・It P / ft F3
・・・ ・・・ ・・・ ・・・ ・・・ ・ ・
... (5) then N −K 13 − K + ・ Δ 1 ... ・
・・・ ・・・ ・・・ ・・・ ・・・ (6
The relational expression of
112) 11 is set as the h-th defocus anchor 1Δ11 and the bracket 14 in the direction of the differential A-nonosuno j. Jta, (II
) formula 1 is the lens circuit < 1. Output from (E c ) to IcI of the zoom ring (7R)
I iFJ + rank (data according to the bell 21-1: board (F
CD) is output, and this data is sent to the lens circuit (1"C
), and the data of KL stored in the address corresponding to the 1-data from this card board (FCD) is sent to the reading circuit (1-1)C) of the camera body in one column. ``Can be read.'' - The CD plate (1'' CD) corresponds to the rotation setting position of the zoom ring (7R).
A gold pattern is defined. ;1. In addition, the data of K L corresponding to the focal length set by the zoom ring (7R) is stored in a fixed memory such as a ROM built in the lens circuit (L E C'), respectively = 1. - Corresponding to the data from the board (FG I)
It is fixedly stored in advance at the ζ address. (3) is data that is fixedly determined according to the reduction ratio μB in the 7J camera body,
This Y-ri 1<8 is output from the fixed f-ri output circuit (110). Here, from the reading circuit (II) C) on the camera body side to the lens circuit (+, IE C) on the lens side, connect the terminal
3 1), (JL 1), the power is supplied to the terminal (J
The synchronizing clock pulse is output via B2) and (Jl2). A reading start signal is sent via (JB3) and (Jl,2), respectively. Also, from the lens circuit (+, [E C) to the reading circuit (1゜l) C; )
Data 1 is output in series to the terminals (JL4) and (JB4). In addition, the terminal (J n !
l). LJL5) is the ground terminal of the connection. 1, i in; nuts (1, E C> Li, end-i
'(JI33). When a reading start signal is input via (Jl, 3), the rotation setting of the zoom ring is changed to KL corresponding to the focal length.
data from the camera body to terminals (+82) and (+12).
) is inputted via the input circuit (1) and is output in series to the reading circuit (1, DC) in synchronization with the clock pulse. Then, the reading circuit (1, DC) outputs to the terminal (J['32) or [
Same as 1 tsuku pulse, "1 tsuku pulse!J" reads the serial data from the terminal and converts it into parallel data. ■The circuit (111) converts the data from the reading circuit (1-, DC) into parallel data. - and data 113 from the fixed data output circuit (11'0), 11-・K [3==
Perform K's performance. The IT sieve circuit (113) receives data 1△L of the differential 4-cus from the signal processing circuit (112).
1 and 11) Based on the data 1 from the main circuit (111), perform K・1△l−1−N, and calculate the number of pulses detected by do. The MOCU control circuit (114) rotates the l--CU (MO>) clockwise or counterclockwise in response to the defocus direction signal from the signal processing circuit (112). T output value Nj at Jurin circuit (113)
When the same number of pulses are input, it is determined that the focusing lens (L) is in focus (movement to the A device by Δd 1), and the motor (MO) rotates. In the above explanation, data 1 is stored on the camera body (BD) side.
<13 is fixedly stored, and this data] [Data from the lens 1<1 is II in 3] By l:J, K =
Although the ratio of K l-·K B was calculated as μ, the pupil output with a value of 1 is limited to the above-mentioned method. For example, when zooming is possible for any of multiple types of camera bodies with 1 <
l-3 (corresponding to the camera body with the right side of the 1)
-]<1-・KB 1 data is output every day according to the setting focal length. On the other hand, the camera body of this specific scale has a fixed data output circuit (110) and a tree circuit (11).
1) is not necessary and the data K1 from I is directly input to the tree circuit (113) from the reading circuit (+,, D C). 1F is different
1n on the music camera body with 4Kt32 (GB 1)
l! When lnons is renamed, [-11 constant) 2-
From the output circuit (110) to K132/KI-31
Output the data of l! +1) Cup circuit (111) deni 2
-・1<1・KB 2. ,,'KB+=KL・
1 B 2 is enacted.
Even if you try to get 1, J: No. In addition, all 1 types of camera bodies with different KI3 values [3-value data K 1 = K +-・K l:)
1. t<2=KL・KB2. −・・
-..., Kn = Kl - K13n are stored in the lens, and all these data are sent to the camera body, and the camera body selects this data according to its own 0)KB value. C is also good. Alternatively, you can send data indicating the type of camera from the camera body to the lens, and the lens side's 8! Data corresponding to the type may be sent to the camera. In this way, the fixed data output circuit (110) and the hanging circuit (111) on the camera side are necessary. In particular, the lens for No A-Cass < [L] is the J
:MoeL is placed on the 11t1 side of the sea urchin zoom lens (ZL)! In the case of zoom 1 nons with Y feeding tension, 1st shift of 1st Op is K o l] = -f 12. / f2...
・ ・・・ ・・・ ・・・ ・・・ ・・・ ・・・
・・・ ・・・ ・・・ (7) fl: The focal length of the focusing lens is 11 x 1, and the value of (K L l + (I or 1) is very wide for 1 zoom. In this case, the lens has 6111 and 1
The overlapping data K l or l is the data of the exponent part and the data of significant figures (for example, 1 for data of 8 bits 1~)
．． 1st place 4pi 1- is the exponent part, lower 11゛14hi 1 is the right one digit) Minute (J, camera body reading circuit (
II) Shift the data of the 4th pit of the first f-even read in C) by the data of the exponent part by 1~11) *>
If the input to the circuit <111> or (113) is -4J, it can sufficiently cope with a large change in Kl or lfi&. It should be noted that the device of the present invention is capable of combining circuit blocks in order to However, in reality, the functions of these circuit blocks are as described below.
This is achieved using a microphone computer (hereinafter referred to as a microcomputer). Figure 2 shows the camera body (BD) of the configuration shown in Figure 1.
) is a block diagram mainly showing the configuration of the circuit section on the side. In the figure, between the camera body (3D) and the lens (i E ), the focal length of the lens (I [) is 1llIt, for example.
．． A converter (CV) is inserted to extend the film by 4 or 2 times. Camera body (BD) and converter (C)
V) are connection terminal groups (CN 1) and (CN 2
) is connected to the converter CV) and the lens (1, l
connection terminal group (CN3) and (CN
4), and the information from the converter CV) and the lens (i F ) is connected to the camera body (13
D) is designed to be given to the side. When the power switch (MAS) is closed, the power A reset circuit (1] 0R1), my-1 input (MCI), (M
C2), display system 911 circuit (DSC), optical 11iQ 1
1-1 path (O20), inverter (INI) ~ (INl
3), AND circuit (8N 1> to power line (+IT
Power supply is started via (). To start this power supply, J:
Power-on relay 1 ~ circuit (1) (') l'<
1) h-th) A relet signal (POI) is output, and the microphone (MCi), (MC2> and display control circuit (r)SC) are reset. Microcomputer (MC2
) is a microcoater that sequentially controls the overall operation of this camera system, and the microcomputer (MCI) controls the control from this microcomputer (MC2).
# ;:' This is a micro combi coater that sequentially performs the dark-white adjustment ht1 operation in response to I. The operation of the microcomputer (M(')2) is shown in Figure 3.
--1~, the dynamics of the mini 1in (MCI> in Figures 8 to 10) are not shown in Roach 1 Sea 1. The photometry switch (YES) is opened in the first step when the release button (not shown) is pressed down, and this switch (MF
When S) is opened, the input terminal (i 0 ) 1.T of the microcomputer (MC2) is connected via the inverter (INl).
A level of confidence of 111g1+° is given. In response to this, the terminal (00) of the microcontroller 1 (MC2>
ligt+°', 99 passes through the inverter (IN2) and the T1-transistor (13T1). For the continuity of this 1-Landisk (8 pieces 1), power A
]・Circuit (F) 0 [S 3), Photometric circuit (
LMC), De-Tl-da (DEC1), Light-emitting diode drive transistor (BT3), Film-sensing setting device 1ff (SSE), Aperture 1-hinge setting instruction (△S1)
3), Exposure 11. I setting device (D SF) + Ta output control mode setting gI (vsE), exposure control device (EX
C), the latch circuit (+-A) is connected to the power supply line (V f
3) Power supply is started via. By starting this power supply, power-on reseller 1~circuit(+1)OR3>karari[
? Tsuto Shinkyu (PO3) is output (exposure control device &
([EXC) is reset. Mar:, Marr
=11 from output terminal (Oo) of 1-in (MC2)
! The I hl+ level signal is sent to the buffer (IT3 F
) converter CV ) and lens (1F)
The power supply type ff (Vl,) and the connection terminal group (CNI)
. (CN 2) , (CN 3) , (CN 4) are applied to the circuit (CVC) in the converter CV) and the circuit (+-IEC) in the lens (l F ). In addition to this power supply terminal, the connection d(F#I)' is
A signal transmission terminal output from the output terminal (06) of the microcomputer (MC2) and used to release the lens circuit (+-130) from the ret state. A terminal for transmitting synchronizing clock pulses from the clock output terminal (S CO) of the microcomputer (MC2) to the inverter circuit (CVC) and lens circuit (+, -EC). Microcontroller (MC2) serial data input terminal (81) T)
I:]] Shiver 1 (cV), Ren X (I E
)/) Day 5 f-ta is done manually! The 111 input terminal and the ground terminal are connected at 61'1. 4-chome a3
, the circuit configuration of the direct motor 11 data input section of the mini-input (MC2) is shown in Figure 4.
CVc), l; J: Bi-lens (l IE ) circuit (+
The circuit configuration of J0 (1, MC) is shown in Figure 5. The photometric circuit (1, MC) sends the analog value σ) photometric signal to the analog input terminal (AN[) of the mine (MC2).
h for D-△ conversion to the voltage input terminal < v r <>
(Heavy Electric Y: “It is giving a signal. The microcomputer (MC2) is
Based on the M quasi-voltage signal from the photometry circuit (1-MO), the terminal (AN+') is manually connected to the
The issue was changed to a digital name. Display control circuit (f)
SC) The exposure control value is displayed on the liquid crystal display (DSP) according to various data input via the data bus (DI'3), and the light emitting diodes (+,...
, D10) to (1, D1n), a warning display, etc. is performed. The output terminal -f<08) of the microcomputer (MO2) is "'It 1Q11" after the photometry switch (YES) is closed until the camera's exposure control device starts working, and the inverter (INII) Therefore, 1 helangister (i3'1-3) is a light emitting diode (LD) only during this period.
Lo)~(1-D
In response to the signal given from the output port (Of)l) of
SI: ), (△S[). (SS Bi) 1 circuit <DSC) or (LA>), determine whether data is exchanged between any device or circuit and My-1 circuit (MO2) via the data bus <OB'). An indication signal is given to output terminals (aO) to (an+1). For example, the microcomputer (MC2) is exposed to ill'
When reading the same data, use the output port (O
With the specific data from P1), the output terminal T(ao) is "ll"
By becoming igh°', the data bus (D B )
The exposure control mode setting device (MSE) accepts the set exposure control mode and outputs data, and this data is read from the input/output capo-1 to ('T10) of the microcomputer (MC2)1.
, will be. Similarly, when reading the set aperture value,
2) becomes “lligh”. When sending display data to the display control circuit (DSC), one of the terminals (an) to (an) goes to 'l-11011' depending on the data to be sent. When sending conversion coefficient data (K D ), output port (OP 1) after outputting this conversion coefficient data from input/output capo] (r/'0) to data bus (D B ).
Outputs specific data for a certain period of time, and latches the J:, 6971 circuit (1-Δ) (4: conversion coefficient data) to the pulse from the terminal (anll). +n(
'il ig to the interrupt signal input terminal (i[) of MO2>
The following exposure control operations are started in response to interrupt No. 1a of ``t+'', and the device is equipped with a release circuit, a mirror drive circuit, an aperture control circuit, and an exposure u5 period control circuit. (EXC> 1:11
, when a pulse is output from the output terminal (04) of the microcomputer (MC2), the aperture step number meter output to the data bus (DB) is taken in, the release circuit is activated, and the exposure control operation is started. Once a certain period of time has elapsed since the start of the exposure control operation, the microcomputer (MC2) outputs exposure time data to the data bus (D13) and pulses to the terminal (05).This causes the exposure control device (E ) takes in the exposure time data, activates the mirror drive 6h circuit to start raising the reflecting mirror, and creates the aperture 1III control circuit!1J to narrow down the aperture by the number of stops data.The upper back of the reflecting mirror When the process is completed, the
The leading run (1) is started. At the same time, the count switch (CO8) is closed, causing exposure tlk l+',
I system ulj 14-jl road/fi l'l! I+ sea c exposure 111t rat te/71ko x 4 ko 1 nodah time 1- is started. Run 1- is completed, and the mirror IU N:J starts running, the aperture is asked, and the exposure control 31 is performed by changing the mirror
1 movement is completed. The release switch (Rl-S) is closed at the 21'Q stage of pressing down the 1st release button, and as soon as this switch (r<LS) is closed, the inverter (rN3
), that is, the -I input terminal of the AND circuit (AN 1) becomes "If igboo".
E S ) is opened as soon as the exposure control operation is completed, and νW
The exit control till mechanism (not shown) is ready for operation.
It will be released when it is blocked. Indicates the open/closed status of this switch.
The signals c and H are connected to the microcomputer (N) via the inverter (IN4).
=I02> input terminal (12), J, and AND circuit (A
N1) is applied to the other input terminal. Furthermore, the output terminal of the AND circuit (8N1) is connected to the microcomputer (MC).
2) Interrupt signal input terminal <1

) is connected to -(. Therefore, in the state where 'fA.--' of exposure controller 114 is not completed, the gate of AND circuit (AN1) will not close (and the release switch (R1, ) is closed and the output of the AND circuit (AN 1) is "low"
There is even a shiL. That is, no interrupt signal is input to the main and f21 ports (MC2), and no exposure control operation is started. On the other hand, the state in which the 'fl--ji of the exposure system ta111-171'J is completed [' is the AND circuit (AN1) glue-
Between 1 and 11, press the release switch (RL S).
) is closed, the output of the AND circuit (AN1) becomes "'
lligh°', the interrupt number 1g is sent to the microcomputer (M('
;2) interrupt end? (IT,) When input 1 is input, the microcomputer (MC2) automatically shifts to exposure control operation. Output terminal (01) of My:] (MO2). (02) , , (03> are each My:1n (MCI
) input terminal <i 11) , <i 12) , (i
13) is trying to connect. Here, the output terminal (01) is II jgb 11 when the focus detection operation is performed using the micron (MC?), and the output terminal (01) is II jgb 11! I T Idokiha”
The output terminal (02) is connected to the motor (
A replacement 1 nons (f: L) is installed so that when the MO) is rotated in the h1 direction, the 1 focus nons (f: L) is extended.
, Mo1- (MO) against a! t g1 direction 1 (11
For interchangeable lenses that can be rolled over and rolled over, IJ:
It becomes “l, ow”. The output terminal (03) is connected to a method (hereinafter referred to as In the case of an interchangeable lens whose focus is adjusted only in response to a one-way predictor type
1. , (IW"), a system in which one non-lens is driven by No. 15 (first bin, rear bin, focus) in the direction of deviation from the focus position a fr+ (hereinafter referred to as the three-point pointing system), and this block. In the case of an interchangeable lens in which focus adjustment is performed in combination with one type or the other, the switch (FAS) is turned off by a manual off member (not shown), and the detection result of the in-focus state is Mode 1: (hereinafter referred to as 8), the focus lens is driven to focus to M and the focus is automatically adjusted. Depending on the result, only the focus state is displayed, and focus adjustment is done manually and is opened when in single-handed mode (two-handed, called FA mode).The opening/closing signal of this switch (FAS) is sent to the inverter 1N6. ) / r l no (my: 1 n (
It is applied to the input terminal (11) of the microcontroller (MC2) and the input terminal (il4) of the microcomputer (MCI). The output terminal (01G) of the input terminal (MCI) is connected to the input transistor (13T2) via the inverter (INS).
It is connected to the base of #A. Therefore, terminal (016)
When becomes P1high, the transistor (B'l'
2) becomes conductive and power-on rehirer 1~circuit (PO2)
, focus detection light receiving section (Fl-M), light receiving section braking 11 circuit (COT), motor drive circuit (MDR), engine T1-
(FNO), light emitting diode drive circuit (FAD)
) is started to be supplied with power via the power line <V[). By starting this power supply, the circuit (FO
R2) outputs a reset 1- signal (PO2). The light emitting diode drive circuit (FAD) has a circuit configuration as shown in FIG. 6, for example, and the microcomputer (MCI)
Output capo-1 ~ (OPO), field output terminal (017)
, (018), (019) according to the output of the light emitting diode (+4)0). <1-1) 1) Drive 1l-D (+-D 2). With this circuit configuration, any one of the output terminals (017), (018), and (019) of the microcomputer (MCI) is set to "l-1i1+" and the light emitting diode Δ- for displaying the j1 bin. (LDO), light-emitting diode (1-, DI>) for focus display, light-emitting diode (Δ-) for rear bin display (
When any one of the LDs (LD2) is turned on, it displays the 11η bin or the in-focus or rear bin. In addition, the output terminal (017
), the two terminals of (01'l) are 'il 1(I11''
', the light emitting guide A'-de (LD o) is triggered by the clock pulse (CP) from the oscillation circuit (O20).
,]-□2> blinks at 11%, indicating that focus cannot be detected. , Table 1 shows its operating status. Table 1 The light receiving section for focus detection (FIM) consists of a CCD (Charge (,
oupledf)evice) Te is formed. The control 911 circuit (COT) drives the CCI (Ft, , M) based on the signal from the microcomputer (MCI), and performs Δ-reconversion of the CCl) output and Δ-D conversion output to the microcomputer (MCI). It is equipped with a transmission function. Furthermore, the control circuit (CO'T'
), from the output terminal (010) to C0D(I”LM
) is output from the output terminal (011), and a pulse signal for forcibly stopping the integral operation is output from the output terminal (011). In addition, the control circuit (COT) for microcontroller <MCI)
, a signal indicating that the integration operation at C0D ([l-M) is completed is sent to the interrupt terminal (i[), and A-D conversion operation of the accumulated charge is performed for each light receiving element of C0D (FLY). A signal indicating that the above A-
1) Converted data is input capo-+-'(r P O)
are input respectively. Furthermore, the control circuit (CCI) (1-LM) is
COT), the reset signal is sent to the terminal <φR), the transfer command 18 is sent to the terminal r (φ■), the transfer clock l) is sent to the terminals (φ1), (φ2), <φ3), and the reference type ( ◇ is input to the terminal (ΔN[3), and C0D(+=L
M) to the control circuit (CO1-), and connect the terminal (
From △N11), the potential corresponding to the light receiving part of the monitor light receiving part is calculated from the terminal < A OT ) to the accumulated charge l1 at each light receiving part.
111 are output respectively. This 1,11 control circuit (C
The specific circuit configuration of the OT will be briefly described in FIG. 14. Here, CCD()21. -M), control circuit (C
To briefly explain the operation of M(::1), the control circuit (COT) responds to an integration start signal from the output terminal (010) of the microcomputer (MCI), C0
Send a reset signal to D (FLY) and CCD (FLM)
At the same time, the reference potential signal is changed to C0D(
FLY). In each light receiving part in C0D (F l-M ), the accumulated charge increases according to the amount of light received, and as a result, the electric charge <Ct output from the terminal (ANI'3>) decreases.Control circuit (CO1-) outputs a transfer command signal to the CCD (FLM) when the level of the terminal (ANB) reaches a predetermined value, and transfers the accumulated charge in each light receiving part of the COD (FLM) to the COD (FLM).
The signal is transferred to the transfer gate in D (FLM), and an integration completion signal is given to the interrupt terminal (it) of the microcomputer (MCI). Then, the control circuit (COT)
t-Ml) The accumulated charge transferred to the transfer gate is φ1, φ
2. It is received and A-D converted based on the transfer zero of φ3, and Δ is sent to the input terminal (ilo) of the microcomputer (MCI) every time the A-D conversion of the accumulated charge by one light receiving section is completed.
- gives a conversion completion signal. The microcomputer (MCI) takes in the Δ-converted data from the input port (IPO) in response to this signal. sot, r, myxin (MCI>G, tCCD (FI
When the number of Δ-D converted data corresponding to the number of light-receiving elements of M) is acquired, the acquisition of the COD output ends. a-3. If the interrupt signal is not input even after a certain period of time has elapsed since the start of integration, the CC,
A pulse for forcibly stopping the integration operation of D is output from the terminal (011) of the microcomputer (MCI). In response to this pulse, the control circuit (COT) gives a transfer command signal to the ccD from the terminal (φ), and also sends the microcomputer (M
CI) outputs an interrupt signal to COD output A of previous) E.
- Performs D conversion and data transfer operations. The motor drive circuit (MDR) drives the motor (MO) based on signals given from the output terminals (012), (013), and (014) of the microcomputer (MCI). lJ'L le. In addition, the output terminal (012) of the microcomputer (Mcl)
Hioh” The throat motor (MO) moves clockwise.
When the output terminal (013> is “High”), the motor (MO) is driven counterclockwise and the output terminal (012)
,, When both (013) are "LOW", the motor (MO) is stopped driving. In addition, microcontroller (MC)
When the output terminal (014) of I> is "l-1i (ill"), the motor (MO) is driven at high speed, and when it is "I-ow", it is driven at low speed. A specific example of this motor control circuit (MDR) is as follows. The applicant has already proposed this in Japanese Patent Application No. 57-136772@, but the explanation will be omitted as it is unrelated to the gist of the present invention. The encoder (ENC) converts the rotational torque of the motor ~ (MO>) to the lens. The transmission mechanism on the camera body side (L
The amount of drive of the MD) is monitored by, for example, a photocoupler, and a number of pulses proportional to the amount of drive is output. This pulse is transmitted to the microcontroller (MCI) clock input terminal (
DCL) and is automatically counted, and the count value ECD is used for counter interrupt in the microcomputer ('MCI) flow described later. Ma IC% This pulse is
The pulses are sent to the motor drive circuit (MDR), and the rotational speed of the motor (MO>) is controlled according to the number of pulses. Fig. 3 is a flowchart that does not show the operation of the microcomputer (MC2) in Fig. 2. The operation of the microcomputer (MC2) can be roughly divided into the following three flows.The flow starting from step #1 is the main flow that starts when the power switch (MAS) is opened, and the flow starts when the photometry switch (MAS) is opened.
YES) is closed (#2), power supply to circuits other than the focus adjustment circuit starts (#4), and the exposure control information set in the camera body (B D > is read ( #5), lens (LE'), converter (CV
) reading data from (#6 to #12), photometry (fl
Repeat operations such as reading (#13.14), self i1+ setting of ΔF mode and FA mode (#1G to #27), calculation of exposure control value (#2g) and display (#3f, #32>). Return.The flow starting from step #45 is that the photometry switch (YE
Even if S) is released, for a predetermined period of time (for example, 15 seconds) there is a timer interrupt flag 1]- for causing the main flow to operate. The flow starting from step #59 is a release interrupt flow for starting the exposure control tip operation of the camera by opening the release switch (RL S ). The operation of the camera system shown in FIG. 2 in relation to the microcomputer (MC2) will be explained in detail below based on FIGS. 3 to 6. First, when the power switch (MAS) is opened, a reset signal (PO
1) is output. This reset signal (PO1) causes the microcomputer (MC2) to perform a reset operation in the main flow at step #1. Photometry switch (YE
When it is found in step #2 that the input terminal (10) has become "HLoh" due to the closure of S), the timer interrupt is disabled and the terminal (OO )
to ′+−+ iQh ++ (#4). As a result, the transistor (BT1) becomes conductive and the power supply line (VB
) power supply starts. At the same time, the buffer (BF>
Power supply from the power line (VL) to the converter (CV) and the interchangeable lens (+-E) is started via the power supply line (VL). #
In step 5, the exposure control mode setting device (MSE)
, exposure time setting device (TSE), aperture value setting device (AS)
E) Data from the film sensitivity setting device (SSE) is sequentially taken in to the input/output port (Ilo) via the data bus (DB). In steps #6 to #12, data "'O" is first set in register A (#6), and terminal (06) is set to "0".
t-ligh” and the converter circuit (CV
C), L/lens circuit L E C) 17) The jJ set 1~ state is released (#7-1), and the data serial input J command is output (#7-2). When the input of one data from the converter circuit (CVC) and lens circuit (LEC) is completed (#8), the captured data is set in the register M (A>) corresponding to the contents of the register (# 9) Next, '1°' is added to the contents of register A (#10), and it is determined whether the contents have become AC (constant value).Here, if (A)≠AC, Returning to step #7-2, the next data is taken in again. When it reaches (△)-△C, it means that the data has been taken in from the lens (LE) and converter (CV). , set the output terminal (06) to "low"(#12
), converter circuit (CVC), lens circuit (LEC)
Reset. Here, a specific example of taking in data from the lens (LE) and the converter (CV) will be explained based on FIGS. 4 and 5. The serial data input section shown in FIG. 4 outputs eight clock pulses from the output terminal (SCO) when inputting 8-bit serial data, for example.
The serial data being input at the falling edge of this clock pulse is sequentially read. That is, the serial data input command (SIIN) sets the flip 70 block (FF1) and releases the set state of the 3-bit binary counter (Co1). At the same time, the gate of the AND circuit (AN7) is opened, and the clock pulse (DP) frequency-divided within the microcomputer (MO2) is sent to the output terminal (SGO) as a synchronization clock output.
) to converter (CV) and lens (LE) circuit (C
vC), (LEC). In addition, this cross pulse is transmitted to the counter (Co 1), shift register (SR
1) is sent to the clock input terminal. Shift register (SR'1) clock pulse (DP)
At the falling edge of , the input terminal (Sr
) Sequentially import the data entered in I). Here, the carry terminal (CY) of the counter (CO1) is 8
Period from when the second clock pulse (DP) is input until the next cross pulse (DP) is input'' Hi
gl+ ”).On the other hand, an AND circuit (AN
5), the output of this key qp is inputted to one input terminal, and the clock pulse (DI) is inputted to the other input terminal via the inverter (rN15), so the AND circuit (A
N5) becomes "1-1 igh" at the falling edge of the 8th clock pulse (DP), resets the flip 70 knob (F[1), and puts the counter (COl) b in the reset state. Therefore, the output of the AND circuit (AN 5) also becomes "l-Ow" as the carry terminal (cY) of the counter (Co 1) becomes "low", and is ready for the next operation. H from this AND circuit (AN 5)
ioh'' pulse, the serial input flag 5IFL is set, it is determined that data input is complete, and the microcontroller (MC2)
is from the shift register (SR1) to the internal data bus IDB.
) is stored and read in a predetermined register M(Δ). In Fig. 5, the left side from the dashed line is the converter (CV
) converter circuit (CVC), and the right side is the lens (
L E ) lens circuit (+-E C). My]
' Output terminal (06) of MC2 is "High"
Counter (Co3). The reset state of (Co 5), (Co 7), and (CO9) is released, and these counters are reset by the microcomputer (MC2).
) is given from the output terminal (SCO) of the cross pulse (
DP) can be counted. Binary counter of 3 bits 1~ (Co 3), (Co 7) 0 tsu') Pulse (DP> rise, count the edge, and from the γ-edge of the 8th clock pulse) The carry-1 terminal (CY) is set to "H'igl+" until the next clock pulse (DI') rises. 4-bit binary counter (Co5), (
The counter (Co 5), (Co 9) counts the falling edge of the first terminal (CY) of this key 11, and every time the first pulse of the clock pulse of the 8117iI rises, the counter (Co 5), (Co
The count value of 9) increases by 1. -1, / Hertha circuit (CVC) ROM (RO1)
The register is directly specified based on the count value of the counter (CO3). R of lens circuit (l-EC)
OM (RO3) selects the data data (DP9) and data selector (D) based on the count value of the counter (Co1).
The register is specified indirectly via S1). The data of the lens (LE)' and converter (CV) output from ROM (RO1) and (Ro3), respectively
Depending on the output of the decoder (DP5), either one of the outputs, the output of the sum of both added by the serial adder (ALl), or the data of all "O" are selectively output. In the case of a lens with a fixed focal length, the counter (Co9), decoder (DE9), and R
Table 2 shows the relationship with OM (RO3), and Table 3 shows the relationship in the case of a zoom lens with a variable focal length. Also, the converter

[Noru counter (CO'5) and decoder (
DE 5) and ROM (RO1) and output to the camera body
Table 4 does not show the relationship with data. Note that φ is the data of each bit.
Indicates that the data may be 0'' or 1''. (Left below) Table 2 Table 3 Table 4 Counter (Co 3>, (Co 7) (7) Output (
110), (h 1 ), (b 2 )' Hachikota
(r)E3). (DE7) and a decoder (DE3). (D[E7) is the signal shown in Table 5 according to this input data.
Outputs. (Left below) Table 5 Therefore, each time the clock pulse rises, the ROM
(R3') data is sequentially from the lowest pitch 1-(ro)
1 bit 1 ~ each AND circuit (AN20), ~ (AN27
＞, is output via the A On path (OR!i), and the same tag
The data in ROM (RO1) is also clock pulsed at the timing.
Each time the signal rises, one bit is sequentially sent to the lowest level 1 (CO).
AND circuit (ΔN 10) to (ΔN17),
The signal is output via the circuit (OR1). Also, the zoom
In the case of a lens, the settings can be made by operating the zoom ring (ZR).
Outputs 5-bit data according to the specified focal length.
A filter code board (FCD> is installed in the lens circuit (f EC).
I'm being kicked. Changes depending on the set focal length = 1-de
The data is transferred to the receiver (DS) by the output of the board (FCD).
1) The values of the lower 5 pins 1 to 1 of the input terminal (α2) are unique.
It is decided. Therefore, the data director (DS 1)
When the output (h4) of the coder (DF9) is 'OFF-OW'
is “Q OOOb3 h2 old from input terminal (α 1)
The data of “ho”, and when “l-1ight”
``''h2 old +10 ＊＊＊＊'' from input terminal (α2)
4="(* is code board data)" data can be output.
specifies the address of the ROM (RO3). If the output of the counter (CO9) is “oooo”, RO
M (RO3) address “'001-1”l is hexadecimal number
) indicates that the lens is attached.
data is memorized and this data can be used for any kind of exchange.
Data common to lenses (e.g. otoiotot) and
It has become. At this time, the camera body (f3D> and lens
A converter (CV) is installed between the
If so, the output terminal <q2) of the decoder (DE5)
igh”, the lens (L E ) color feed it
T < Router "01010101" 1. ta
Via the command circuit (AN32) and the OR circuit (OR3>),
Also, the lens (LE) can be mounted directly on the camera body (BD).
is sent as is to the camera body and input.
Read from power terminal (SD I > to microcontroller (MC2))
:Reru. This dick? - Interchangeable lenses are installed depending on the
If it is determined that the
Aperture control is performed using exposure control equipment (EXC). On the other hand, it was determined that no interchangeable lenses were attached.
, the aperture metering mode is set and aperture control is not performed.
Not possible. The output of counter (CO5), (co9) is "00"
01” Ni': Ruto, Shi> Snow ROM (RO3>'s a)
Address “OI H” is specified and ROM (RO3)
Open aperture value data ΔVO is output from. J5, set
A zoom lens whose effective aperture value changes depending on the fixed focal length.
In the case of , the maximum aperture at the best focal length (1
Ru. Also, the ROM (RO1) of the converter (CV)
The address “1H” has a converter (CV) installed.
Constant value data corresponding to the amount of change in the maximum aperture value of the lens
β is memorized, and it is a constant value from ROM (RO1).
Data β is output. Decoder (DE5) terminal ((
10) “l-1ight” J:su, ROM (R
The data from O1) and (RO3) are sent to the serial adder circuit (A
+~1〉 is added and (△VO+β) is added, and this
The data in the AND circuit (AN30) and the OFF circuit (OR
3) is output through t, 4. Counter (CO5), (C
o 9) output h<”0010” and RO
M (RO3>. (RO1) is each specified by address "'02H"
be done. Minimum aperture from lens ROM (RO3>)
Data A vmax and converter ROM (RO1)
Data from β and J:S, same as for open aperture.
, Avmax-1-β data is also not installed.
If not, Avmax data is output. Counter (CO5), (Co9) (7) IT force
"0011" Ninaruto, lens ROM (RO3)
Address “03H” is specified and the ROM (RO3)
Data on the open photometry error is output from. Here C1]n
If the converter is not installed, this data remains unchanged.
Loaded into the camera body. On the other hand, converter (CV)
is installed, J: Sea urchin decoder (D
The output of E5) is "i-ow", which is an OR circuit (O
The output of R3) is independent of the data from the lens.
OW” remains, and the camera body has a wide open metering error.
and read the data of ``0''. This is a converter
By installing and covering the capacitor (CV), the open aperture is relatively small.
I think that the aperture and the aperture metering error will be LL O11.
This is because it is okay. Color: zt-<Co 5), (Co 9) output is
"oioo" Ninaruto, ROM (RO1), (R
04-tobi address is specified for each address. The address of the lens ROM (RO3) is 041-1.
”, extend the focusing lens (F L, )′
? One data indicating the rotation direction of the motor (MO) when
And, this interchangeable lens has an exchange coefficient depending on the set focal length.
Data indicating whether the lens is a variable model or not.
remembered. For example, rotate the motor in the J1 direction.
A type of lens in which the focusing lens extends when the
In the case of , the lowest pit is II 1 II, and the motor is reversed.
Rotating it clockwise will extend the focusing lens.
For lenses of this type, the lowest pins 1~ are set to "o".
It has become. Also, the conversion coefficient changes depending on the setting
For lenses of this type, the topmost pitch 1- is '1'''
For lenses that do not change, Mogami (Q bit is
It is "o". This data is converted into a converter (C
V) is sent directly to the camera body regardless of whether it is attached.
. When the output of the counter (CO9) becomes “oioi”, the deco
The output of the reader (DE9) is “ for a lens with a fixed focal length.
``00101'', for zoom lens ``1001''
φ゛°, and the ROM (RO) of the lens circuit (LFC)
3> is “05 H” or “oo1* *
* $ * ″ address is specified. In addition, “ *
＊ ＊ qζ1? ” is data from the code board (FCD)
It is. This address in ROM (RO3) has a fixed focus.
In the case of a point distance lens, the fixed focal length of the lens is 11111
Corresponds to log 2 f of the logarithm value of f to the base 2
If the data is for a zoom lens, the zoom lens settings
Data corresponding to the logarithm value log2f of the focal length f is stored.
This data is output to the camera body. Ma
In addition, the converter ROM (1 and 01) is at address “5H”.
'' is specified and a:i is specified, this address has a converter
Connect the data (CV) to the camera body (BD) and the interchangeable lens (L).
E) The focal length that changes when installed between
Data γ corresponding to change H1 is stored. Koto
The output terminal (gO) of the decoder 1F5) is "+-+
Since it is igh ++, the addition circuit (Al l>
Then, the focal length data log , , f is given a constant value data.
The data with the added value of γ is sent to the camera body. This scorch
The point distance is used for determining camera shake warnings, etc. When the output of the counter (Co 9) becomes "0110",
In the case of a zoom lens, "1" is output from the decoder (DE9).
The data of 010φ'' is output and the terminal (h4> is '
After the data selector becomes “l-1ight”, the data selector
Data from the input terminal α2 of 1) is output. to this
Therefore, ROM (RO3) is '010J *''4C*
*” address is specified. This address contains
Changing the focal length of the zoom lens from the shortest focal length
Aperture value change from effective aperture value at the known focal length of the case
Tsubaki's data ΔAV is stored according to the 69 constant focal length.
There is. In addition, in the case of a lens with a fixed focal length H1, ΔAv=
Therefore, the address "' 06 H" has data of 0'.
data is memorized. This data is converted into a converter (CV
) on the camera body regardless of whether it is attached or not.
It will be done. Note that this data is aperture-generated from aperture metering data.
The operation ljl (Sv −Avo−Δ
Al-△VO-Δ△V and set or calculated aperture aperture
Operation AV-AVO-△A to control the effective aperture to -4
Used for V. When the output of the counter (CO9) becomes “0111”, the
In the case of a digital camera lens, the output of the decoder (DE9) is “101”.
1φ", and ROM (RO3) is "011 *
* * * i: " address is specified. This address
The dress contains conversion coefficient data K corresponding to the set focal length.
O is memorized. Also, fixed focal length lenses
In this case, the address of ROM (RO3) is “0711”.
specified, and fixed conversion coefficient data K is stored at this address.
O is memorized. such as to compensate for changes in the conversion factor.
A converter with a built-in mechanical transmission mechanism is installed.
If so, this data is transmitted to the body as is. The data KD of this conversion coefficient is calculated by a microcomputer (MCI).
Defocus amount 1Δ11 to 1Δl−I
K
M D ) is used to calculate the drive rod data.
. The data of the conversion coefficient is, for example, data) < 8
In the case of Pitsu 1~1. Lower 4 bits such as exponent part of 4 bits of high order
As shown in Table 6, it is divided into significant figures of
being kicked. Table 6 The conversion coefficient data and evening KD is KD = (k3・2 + 2・2−′ + 1・2−20
tto・2 )・2 ・2 111=to 4−2° 10 to 5−2′ +to 6・22+
7.23 Determine the formula for n-constant value (for example, -7). Furthermore, k3 is the most significant bit of the significant figure part.
Therefore, it is always '1''. Therefore, such a
If coding is performed, the value of KD will change over a considerably wide range.
However, there are few bits that are easily affected by the microcontroller (MCI).
The number of data can be stored in memory. Figure 7 shows the conversion coefficient data output from the zoom lens.
This is a graph showing the relationship between focal length and focal length, and the horizontal axis is lo
g2f, and the vertical axis corresponds to the conversion coefficient KD. By the way, KD is a straight line A depending on the focal length If. It changes continuously as shown in B and C, but in this example,
In this case, as shown by broken lines A', B', and C',
The values are discrete values ranging from 1 to 1<33. Here, for K 1-2°, KD= '″01111000″′
, -1-Z zu -4 K If 2=2+2+2+2, Kl)-"'011()
lli'', in the case of K3-2M2+2, K D = ”
01101110°", -1-2-4 If 4=2+2-1-2, K[)="'011CmO
When V', K 31 == 21-2, KD = '“0
0101000'', 4-1 and 32=2+2 KO='''001110(11
”, if K33=2, KD-” “00101000” etc.
There is a C. The focal length of the zoom lens is the 5-bit code plate (FCD).
It is divided into many areas corresponding to the output of the
For example, if the lens changes along straight line A, then fl? ~f25
It is divided into nine zones. With this configuration, f25
If it is a zone, the smallest value within that zone is the most
17 and [24 zones] for nearby and small value data.
If the zone is 16, f23 is 15, if the zone is f22.
If this is the case, the data 13 will be output. The reason for determining the value of KD in this way is as follows.
. In other words, by setting KD to a larger value than the actual data (
, it is necessary to move the focusing lens one movement to the in-focus position.
Number of encoder (ENC) pulses corresponding to the required drive foot
than N=KDX1Δ1 (more N than
As a result, the lens passes through the in-focus position, and the in-focus position
This is because the lens will hunt before and after the
. Therefore, if KD is set to a smaller value, one side will gradually become more stable.
The focus position is approached from the direction, and the actual K
Since we are trying to make the difference with D as small as possible,
Shorten the time it takes for the focusing lens to reach the in-focus position (all
can be done. In addition, if KD's 111 is always smaller 1tf4 and 1c
, the difference from the actual KO value becomes too large to reach the in-focus position.
It may happen that it takes too long to reach the
However, in order to shorten the time, zone f1 shown in B'
8, slightly thicker than the actual value (like f12).
Create a small area where the image is
It's okay to go too far. Also, if M shadow distance is infinite, the solid line C(OO), short distance
In this case, it is converted according to the shooting distance, as shown by the dashed-dotted line C (near).
There are zoom lenses whose coefficients vary significantly. This zoom
For a lens, for example, the shooting distance is in the focal length f1 zone.
When changing from the infinite tit M to the nearest position η, K
[)=k17=2 changes to 1<D-2-4 K15=2+2. This kind of zoom
In this 11th embodiment, in order to be compatible with
Only the data of the conversion coefficient at the position is recorded in the ROM (RO3).
area near the focus range (hereinafter referred to as near focus zone).
Show? The positive and negative values of △L (i.e., the differential
Focusing record based only on No. 1g of
When you drive the lens and enter the near focus zone, the K[) mentioned above will appear.
The lens is driven based on the value of N divided by and 1Δ11.
I try to keep it moving. In addition, the code plate for focal length (F
In addition to CD), a separate =1-do board for setting @ shadow distance is provided, and this
These code plates specify the address of ROM (RO3>).
Even if you try to obtain accurate conversion coefficient data by
or an increase in the number of components or an increase in the number of bits for addressing.
, problems such as increase in ROM capacity ω (IFI, practical
do not have. Furthermore, if you move the zoom ring from the short focal length position, for example,
By moving the lens to the short focal length side, macro photography can be performed.
There are zoom lenses that are configured to (This zoom
The mechanism of the lens is not related to the gist of this application, so it will not be discussed here.
Explanation is omitted. ) for a zoom lens like this
In this example, when switching to macro photography, the code plate (
FCD) No. 11111 data is output.
, a specific address "01111111'' is specified.
That's how it is. In the case of macro photography, the position of the pupil diameter may change or the depth of focus may change.
If the aperture value becomes shallow or the aperture value becomes 00,
Since it is difficult to adjust the focus by the address,
The data ``φφφφ0110'' is stored, and the
3 is ``O''. The microcomputer (MC2) uses this data to
The switch (FAS) determines that the
Even if AF mode is set, FA mode is only displayed.
Automatically switches the focus adjustment mode to . Also, if you do not set the shooting distance to the closest position, the micro
A zoom lens that is configured so that it cannot be switched to shadow removal.
There is. For such lenses, MacIfllll
The switch (MC8) in Figure 5 is closed by changing the shape.
Inverter (I N 17), Inverter (I
N19) through andro path (AN40) ~ (ΔN
44) all outputs become “low”. This causes
The address of ROM (RO3) is 011000
00" is specified. This address has "'φφφφ0100" as KD.
The data is stored and the microcontroller (MCI)
Switching to macro photography with data 3 = k1 = O
The shooting distance is automatically adjusted to the closest distance.
Rotate the motor (MO) so that the
Maneuver the lens for the customer. The light receiving part for focus detection is
It is designed to look at the exit pupil, and this time diameter and light receiving element (
Optically equivalent to the film plane (located at 17A1)
The light passes through the IM shadow lens depending on the position of the pupil relative to
Determines whether the light-receiving element receives light from the subject.
Ru. Therefore, depending on the lens, light may enter some light receiving areas.
There are some things that do not emit light. With such lenses, focusing
Even if detection is performed, it is not reliable, so ΔF mode or
It is preferable not to operate in FA mode. So here
In the case of a lens like , the ROM (RO3) address
Answer (if it is a zoom lens) 011* * 1: *
i: ”, for fixed focal length lens “’0000011
1”), put the data of φφφφoooi” as KD.
Remember it. The microcontroller (MC2) uses this data to
, microcomputer (MC1) in step #16-2 described below.
performs focus detection operation in AF mode or FA mode.
Do not jump. In addition, by macro switching, AND circuits (△N40) to (A
N44) to “oooooo°’ or” 1111
1” data is output, the ROM (RO3)
Address “ooiooooo”, “0(N11111
” contains data corresponding to the focal length during macro photography.
Address “01000000”, “01011111”
″′ stores data corresponding to ΔAV during macro shooting.
are output from the ROM (RO3).
. Also, the rotation of the drive shaft in the camera body is transmitted to the focus adjustment member.
If you are replacing nons without a reaching mechanism,
Similar to switching to black eyes, KD is φφφφ0110
” is memorized and only FA mode is possible.
. Furthermore, like the lenses mentioned above, it does not have a transmission mechanism.
In the case of a converter, the output of the counter (Co 2) is
'φ from ROM (ROI) when it becomes "0111"
φφφ0110” is output, and the eye decoder (DE5
)'s terminal (gl);pi, ka"l-1igh"
k: Camera data from Natsu TR0M (RO1)
What kind of interchangeable lenses can be used if the transmission is transmitted to the main body?
Once installed, only FA mode operation is performed. Insert the converter between the camera body and the interchangeable lens
In this case, the focal length 1 changes depending on the converter, so
, a suspension corresponding to the increased amount (drive from the camera body)
A reduction mechanism that reduces the rotation of the shaft (6) is installed inside the converter.
It is necessary to provide In other words, the amount of rotation of the drive shaft of the camera body
A mechanism that directly transmits the image to the drive shaft of the focusing lens.
If the converter is equipped with only the KD of the lens,
It is transmitted to the camera body and only N-KDxIΔ1-1 is reflected.
When the drive shaft of the camera body is rotated, the focal length N1 increases.
Problems such as the focus position being shifted only in areas that correspond to
There is a problem. Therefore, the above speed reduction mechanism is
In this embodiment, for example, the focal length is set to 1,
If the converter is in 441;, the KD will be 1/2 or double.
For each converter, KD is 1/1.
K D's top 4 pits 1 to exponent part data (k7 to 6
From 5 to 4), subtract 1 for a 1.4x converter.
, for a 21Δ converter, set 2. Returning to Figure 5, the output of the counter (Co 5) is "10".
00”, the converter circuit (C
VC) (7) ROM (RO1)
'01010 indicates that (CV) is 'JA@'
101" check data is output. At this time, the terminal (91) of the decoder (DE 5) is "
t-l right”, so this check data
The data is from the ROM (RO3) of the lens circuit (LEC).
The data is irrelevant and is sent to the camera body (BD) via the AND circuit (AN31>) and the OR circuit (OR3).
It will be done. When the output of counter <co 5) becomes “1001°”
, due to the light flux being restricted by installing this converter.
The aperture value data Δv1 determined based on the vignetting is RO
Output from M (RO1) and in the same way as above, and
Through the circuit (AN31) and the OR circuit (OR3)
sent to the main unit. This data AVI is
C2) is compared with Haku Magenshibaku's data AV (1+β)
. When Avo+B<Avl, the photometric output is Bv-A.
vl, so ([3v-AVI>-1-AV
l=BV and number of refinement stages data AV-(AVO+β
) is calculated. J5 and lens (L E ) J5 and
Data import from converter (CV) is completed.
And, at 7[1-jiat] in Fig. 3, the photometry circuit (1
,,MC) is subjected to 8-D conversion (#13).
, this A-r) converted photometric output data is stored in a predetermined record.
The data is stored in the register (#13). In step #15, release flag R1-F is “1”
If this flag is ``1°'', #
Go directly to step 28, and if it is II OII, press #
Go through steps 16 to #26 to step #28
Transition cover. Here, the release flag RL F is the release flag RL F.
The switch (Rl-8) is closed and the steps after #59
The camera's exposure control value when a low interrupt operation is performed.
This is a flag that is set to ``1'' when the
Ru. Note that the exposure control value is not calculated at the time of this interrupt operation.
If it is determined in step #63 that there is no
In the following steps, the data will be imported and #
If P I F = 1 in step 15, then #16 and above
Focus detection using AF and FA modes in the lower step
Jump the movement []- and expose in step #28.
After performing the enkan, go through step #30 and move to #64
Exposure control will be performed in subsequent steps. In step #16, go to F mode or [A mode]
A determination is made as to whether or not focus detection operation is possible.
, if possible, go to step #11, if not, go to step #11.
Move to step 28. In this step, the lens
is installed (#16-B, diameter and position of exit pupil)
Whether the conditions determined by the position are compatible with the light receiving part (#1
B-2) Light from the subject hits all light receiving sections for focus detection.
Whether or not the light is being used (#16-3), the photometry switch is
The determination of whether or not it is closed (#16-5) is performed sequentially.
be exposed. Here, the check data ``01010101'' is
If not entered (#16-1), the KD data
3 to 1 (if 0 is "0001"(#16-2), record
The exit pupil diameter of the lens is too small and the maximum aperture value is AVO,A.
VO+β, AVO→-△AV or Δvl are constant aperture values
[For example, if it is larger than 5 (F 5.6> ]△vc (
916-3), both F mode and FA mode are available.
Since focus detection operation is not possible, #1G-4 step
It is displayed that the focus detection operation is not performed at step
After a warning is displayed on the control circuit (DSC),
Move to step. Also, the photometry switch (MES) is open.
If it is released and (10) is “LOW” (#16
-5>, perform only FA mode operation for 15 seconds.
In order to differentiate, move to step #28. Input check data, k3~kO≠"0001", A
VO, △vO+β, AVO+AV or AVI≦△vc
. When both ``)li(lh'' of (io) are determined)
moves to step #17 and subsequent steps. In step #17, the output terminal (01) is " +-+
igh u, and the microcontroller (M'CI) uses that input.
AF by "1-4 igl+°'" of terminal (ill),
Start focus detection operation in FA mode. #18
In the step, the conversion coefficients read into the microcontroller (MC2) are
Data KD from input/output boat (Ilo) to data bus
It is output and latched into the latch circuit (1-Δ). this
The data latched by the latch circuit (1-△) is
(MCI) read in step NO, 93 described later.
It will be done. In step #19, the output of the counter (CO9) is '
Based on the data read after “oioo” -C,
, the attached lens changes the conversion coefficient KD according to the shooting distance.
It is determined whether the lens is of the type that changes. here,
If the lens changes, the output terminal of the microcomputer (MC2>
(03) Input terminal (i1
3) is l-(high ”), and if the lens does not change, then
"L, ow". Myung (MCI) supports this belief.
For details, please refer to N08192 to N08 below.
As described in step 197, the imaging position is the near focus zone.
Whether it is within or whether the integration time is longer than a certain value
AF: Drive the motor (MO) at the mote.
Switch. In step #22, the counter (Go!11) is also
The format is based on the data read at “0100”.
Rotation of the motor (MO) when the lens for the cassette is fed out 1st
Determine direction. Here, if you are going for special training, go to Mine 1.
Output terminal (02) of (MC2), that is, microcomputer (MCI)
Set the input terminal (i12) of the
If it is, go to 'l-01jl'.
I> is the defocus direction of the signal to this terminal (i12)
The direction of rotation of the motor (MO) is determined by the signal. In step #25, conversion coefficient data 1<[) number 3
Detecting whether the eye pitches 1 to 1 and 3 are ``1°'' or ``O''.
converter (CV), lens ([E
) to determine whether focus adjustment is possible depending on the mode.
Separate. At this time, is AF mode possible with k3-1?
Then, set the flag MFF to “0” and move to step #28.
Go ηru. On the other hand, if k3=Q, AF mode is not possible, so
Set the MFF to 1''', then turn on the switch (FAS).
If either AF or FA mode is selected.
Detection of water. Here r, AF mode is selected.
If the input terminal (11) is "High", M Kageken
Even if △F mode is set, it will automatically switch to FA mode.
The display control circuit (DSC) indicates that the
Display a warning and move on to step #28.
. If input terminal (11) is “low”, FA mode
Since -C is selected originally, proceed to step #28.
to the top. In step #28, step 4t5 to #14
The set exposure control values, metering values, and data from the lens read in
Perform a known exposure stop based on the data and set the exposure time and aperture.
Calculate the value data and set the flag LMF to II 11
Set it to 1. At step #30, the release flag RLF is “1°”.
If it is “1°”, step #64 and onwards.
Returning to the flow of the exposure control operation, ``0°'' is
Move to step #31. In step #31,
By setting it to 'High' via the power terminal (08).
Inverter (IN8) (~ransistor (r3T'3)
) conducts V, light emitting diode (L D 10) ~(
Warning display by L D In) and LCD display (D In)
The exposure control value is displayed according to S P >. In step #33, the photometry switch (MES) is opened and closed.
Determine the condition. Here, the photometry switch (MES) is closed.
and (10) is “111g11”, then the tie
Tie data from 155 seconds to 155 seconds for marketer interrupt.
iQ specified in register TO for timer #34>, timer
Star 1~ (#35) and enable timer interrupt (#
36) and return to step #2. In this case, (
10) is ``l-1ight'' (photometering switch (MES)
) remains open), so go to step #3 immediately.
Shift to disable timer interrupts and perform the same behavior as above.
Do not repeat. On the other hand, the photometric switch (YES) has been opened (10
) is "l-ow", the switch (FΔS)
Determines whether ΔF or FA mode is selected
(#37) and based on the data from the lens #25
The mode determined in step is determined (#38)
. Here, the input terminal (11) is 'L-OW' and '△Model'.
mode is selected (#37) or the first one is AF mode.
Even if the mode is selected, the flag MFF is set to II111.
If the lens side cannot operate in FA mode,
Move to step #40. ΔF mode is selected and
When MFF is '0'°, the output terminal (01) is
1. ow” (#39) and the microcomputer (MCI>
After stopping the operation, the process moves to step #40. still
, FAT need is determined in step #37.83B.
, the terminal (01) remains “ )-1igl+ ”.
Move to step #40 until the microcomputer (MCI)
Operation continues. In step #40, the open/close status of the switch (EES) is checked.
Discrimination ♂, exposure system tip m la chilage is completed r
and (12) is "'I-1iQh u, then #
Go to step 47 and return to the initial state described later 9:
11. The exposure control mechanism has been fully charged.
If (12) is 'LOW', step #36
Step #2 after enabling timer interrupts in the step
Returns, the photometry switch (YES) is closed again, and the input terminal
child (10) becomes ``l-1i0h'' or the timer
- Have an interrupt. Now, if there is a timer interrupt, 1 from the contents of register king G
is subtracted (#45), and it is determined whether the contents of TO have become “0” (#46).
If #[Proceed to step 5 and later, data of previous
Performs operations such as importing data and stopping exposure. This way, FA
mode, the terminal (01) is HiQhu, so the
The icon (MCI) repeats the operation for FA and
If the terminal (01) is "'1" in step #39,
- Since it is set to “ow”, the movement of My-1 (MCI>
Production has stopped. On the other hand, when c=0, the output terminal (00). (01) and (08) are set to "low" and the
Power supply by resistor (Bi:1) and buffer (BF>)
(Tei J1.: Microcontroller (MCI) in FA mode
> operation stopped, power supply to 1~ transistor (BH3)
A stop is performed. Furthermore, the liquid crystal display section (DSP
) blank display, flag MFF. Step #2 after performing L MF Reset 1~
Return to Summarizing the operation of -1- below, the photometry switch (YES)
While the
CI) operation, 11 Htij 9 display operation is repeated)
It is done. Next, the photometry switch (YES) is opened.
When it is in AF mode, the microcontroller (MCI)
) operation is stopped, data is taken in, and exposure calculation 9 is displayed.
The operation is repeated for 15 seconds, and when in FA mode, the data
The microcomputer (MCI) takes in the data, and the microcomputer (MCI)
1st ′pi calculation. The display action is repeated for 15 seconds. Also, exposure control 1 [
If the picture is not completed, turn the metering switch (
When the MES) is released, data is taken in. Microcomputer (MCI> operation, exposure style 9 display paste) made by
Stop immediately. Please note that the warning is issued once at steps #1B-4 and #27-2.
Even if the display is performed, there is no need for a warning at the next flow point.
If so, display the data to cancel this warning.
Needless to say, it is necessary to transmit the information to the control circuit (DSC).
not. Next, with the exposure control 1114i4 fully charged,
・1 Noise switch (RIS> is not closed)
Explain the operation. In this case, the microcontroller (lvlc2)
#5 to West 15 no matter what movement you do! )'s
Performs release interrupt operation from step. Σ1, An interrupt occurred while reading data from the lens.
In consideration of such a case, set the terminal (06) to “low”.
] inverter and lens circuit (CVC). (113C) to reset 1-state #59),
! l: Set 1 child (01) to “low” and Maiko
(Mcl) to stop the operation of 8F or FA mode.
Let (960). Furthermore, the output terminal (08) is set to ``LOW''.
” and the warning light emitting diode (+-1) 10) ~ (
1-Dln> turn off <4t61), release flash
After setting "1" to GRL F (#62) L,
The aforementioned flag L M r determines whether II 1 II or not.
Another Juru (#63). Here, if the flag LMF is "1", the exposure control is
At the step of rtt64, the calculation of the first shift is completed.
Transition. On the other hand, if LMF is "0'°, the exposure
Since the calculation of the control value is not completed, steps after #5
, calculate the exposure control value, and move on to step #64.
go In step #64, the value calculated in step #2B is
Data of the number of refinement steps Av −AVO, AV −(△v
O + Δ8V to , Av − (, Avo − + β), A
V-(Avo+β+ΔΔV) is output to the data bus (DB>
pulse for data acquisition from the output terminal (04)
is output (#65). J: This is an exposure control device.
The data of the number of refinement stages is imported to the position (F X C).
At the same time, the first exposure control operation begins.
, Intake: When the aperture is narrowed down by the number of stops
The narrowing operation is completed and covered. Constant +1.I from the pulse output from the output terminal (04).
data TV is output to the data bus (DI3), and the output terminal
A pulse for data acquisition is output from the child (05) (
#67, #68). exposed by this pulse
Exposure time data is imported to control device i:/(EXC).
In addition, the built-in mirror drive circuit
The error-up operation starts. Mirror up is complete
As soon as the first curtain started running, I heard a roar.
1 - Exposure taken when the switch ((,OS) is closed
Corresponding to time data, 7;: Time counting starts.
Ru. As soon as the count ends, Shitotsuta begins running in the rear position.
and the second curtain run is completed. By lowering the mirror and opening the aperture, the switch (EES
) is closed. one? Ini1> (MC2) Ha, this su- (Tsuchi (IE
F S ) is open and the input terminal (12) is ``''l-B.
Distinguish "al-Ba"(#69), release
Rehit the lag (RL F) (#70) and set the photometry screen.
switch (M F S ) is closed and the input terminal (+
0) is “lligb°” (#7
1). Here, if (10) is "lligh°", then
Return to the steps from #2 onwards, import the data mentioned above, and
(MCI) operation, exposure stop 1 display operation 1
゜On the other hand, the photometry switch (YES) is turned on in step #71.
It is open and the input terminal (i 0 ) is “' low
"If so, move on to the steps of tt47J Mekuri, and
Set the button (MC2) to the initial state and go to step #2.
return. Figures 8, 9, and 10 show the operation of the microcomputer (Mcl).
This is the flow diagram showing the work. Microcomputer (MC1)
The operations are roughly divided into three flows under J's. Step N081 starts with the microcomputer (M
The main frame is started by the focusing operation command from C2).
ccθ(F
LM) operation start (No. 8), -E - evening
Determination of rotation IjlI'A (N O, 10 - N O, 1
3) , 81 hours of the longest integration time of CCi D and the longest
Operation when the integral time is light (NO114 to 19), focus
Detection of the end position of the lens and the best integration time at 11 o'clock (
NO03,', +-44), motor stop at end position 1
: Onibi low con 1 to last rotation restart (No, 43
~48.51~67), My T1 (MCI) operation stopped
Default setting (No, 24i-33), low shine
CCI) data conversion (NO, 78~B()),
4-Removal of waste products and defocus direction (No. 8
l-411), L No.2/Z capable of AF mode operation
Determination of whether or not (No, 92 to 96), Tl truss
(NO, 1 (10), AF mode)
Motor drive to focus zone and focus determination (No. 12
5-106) (Fig. 9), case of FA-'E-
Focus discrimination (NO, 240~2G+) (Fig. 10), low
'TJ Trust 8', 1 (1) operation (No, 10fi
~115,205~214),77,jilj43
In case of 1 nons that can switch to macro dance at the shooting position
(]] Th-ta-kakui N O, 220-232) etc. f7
) Nine works will be performed. N(1, 70 to 76 step is the control circuit (COL
> to the terminal (it), the CCDT scan is completed and the signal becomes
Since the COD output data reading operation is performed;)
This is the flow of a single child interrupt. Also, No. 20 in Figure 8
0 = 204 steps are encoder (ENC)
The coincidence signal from the counter ECC is outputted via
This is the flow of the counter interrupt in which focus is determined by
Ru. Note that once pin interrupts are enabled,
Even if a counter interrupt signal is generated, the terminal interrupt operation ends.
Both ministries are configured so that the counter interrupt is not executed until later.
The priority order of interrupt operations is determined. This page below
∆F in this embodiment based on the low density (・-1-). The operation of the △ mode will be explained. First, the power is
Reset 1-signal from ON-reset 1~circuit (POR1)<
PO1) is output, and this rehit signal causes the microcontroller (M
CI) performs a reset operation (No, 1) at a specific address.
Let's do it. No, in 2 steps (1 switch (FAS)
is closed and the input terminal (i14) is 'High'.
Determine whether it is. Here, (i14) is
If ゛to1igb''', △['U-do is selected.
Therefore, set the flag MOF to 0°''(゛''1-ow
If ''', then ゛F△ mode is selected, so it is flagged.
Set M OF to #111. At step N005, the output terminal of the microcomputer (MC2)
The child <01) is 'l-1-1i', that is, the input terminal (ill)
is “++ +oh”.
Ru. Here, if the input terminal (ill) is 1-ow”, then N0
Return to step 02 and repeat the above operations. (il
It is determined that l) is “1-(i9h”)
and set the output terminal (016) to 'l-l igl+°''
(No, 6>, r I through inverter (rN5)
- The transistor (BT2> is turned on and the power supply line (VF
) to start supplying power. Next, COD(FIM>
Register i T' for integration part H1 (best integration time
Set the fixed data C1 corresponding to the interval (No, 7>. Next, the pulse of 11iqh
(No, 8) and sends it to the control circuit (COT).
(', starts the integral operation of CD (Fl-M) and interrupts
Possible (No, 9) and l no, then NO, 10 steps
to move to. No, in steps 10 to 13, the motor (MO
) is rotating or not is sequentially determined. In other words, it is determined whether the first focus detection operation has been performed or not.
By flag FPF (No, 10), focus lens
The driving position of the lens (F L ) is the nearest or infinite end.
Terminal flag E N F l
; From the second (NO, 11>, Kake! IJ position is the focus zone
The focus flag I [: "Nisu (N
O, 12), which mode can be selected by the switch (FAS)
is selected or not, the flag MO “NiJ:su (No, 1
3), each is determined sequentially. Here, check whether the first focus detection operation has been performed or not.
lens has reached its end position or entered the focus zone.
or if E△ mode is selected,
The rotation of the motor (MO) is stopped, so no. 14 and above
Move to the next step (tj a). Also, the second and subsequent focusing
Detection 01 is made, and the lens is at the end position 1 focusing zone.
When I reached the 11th button, I clicked △ "The mode has been selected.
If so, the motor <MO> is rotating, so N
o, 3! 'i Move to subsequent steps. Furthermore flag F
During the period when the first focus detection operation is performed, PF is
``1'', the second and subsequent operations 03 will be 0'', and the terminal flag will be
The drive position of the focus lens ([L) is
The closest position or t has reached the infinite position and the motor (
Even if MO> is rotated more than
) when no pulse is output, it reaches 1°' and is in focus.
Flag I F F When the IJ lens enters the focusing zone
"1", when it is off (', 1 "Opa"
. No. In the steps after 14, first integrate D;'I 1
fjl gl l+, '1 for 1 nojisk ITR
Yong Hello "1" is deducted (No, 14), this cash register
Is Bo1~1-B RW coming out from Star ITR?
(1', 1O1i!i). Here, if Borrow B RW does not appear, low 1f4t
1 female flag L I F should be set to II 011 No.
18), input width 1 child (ill) from microcontroller (MC2)
"+-+i" to operate the microcontroller (MC1)
Qh ++ It is necessary to determine whether the double signal is input or not.
, 19>. If (i il) is “′[.(igl+”), No, 1
Return to step 4 and repeat this operation -4° again, '
If “low”, No, move on to steps 25 and onwards.
After performing the operation to return to the initial state with
Return to the step and the input terminal (ill) is “High” again.
”.Meanwhile, NO, 15 steps
-I3 When it is determined that RW has been obtained, the longest integral +
1. 'J period has elapsed, and the output terminal (Qll)
Output a pulse to (No, 16> C0D (Fl, ,
Forcibly stop the integration operation of M) and set the low brightness flag L.
L[:"1"t, T, 1lil control times
An interrupt signal is output from the line (Co1-) to the interrupt terminal (eye).
have something to do with it. No. In steps 35 and above, first, use the 51 o'clock river nozzle.
Data C2 is set in the screen TWR for a certain period of time (No, 3
5), Cash register:1. From the contents of R, I -f n (e.g.
For example, subtract 3) to find out whether Borrow BRW appears.
Override discrimination (NO, 37>.Here, register ITR
If Borrow B R1/l/ appears from , then as above,
, the longest integration time has elapsed, so No. 16
Move to the step and perform the integral operation of COD (FLY).
Forced stop ki 1! , low brightness flag t-l-, F
'' from the control circuit (COT) to the interrupt terminal (11)
Interruption f8 is input one by one. Also, if borrow [1RW is not displayed, low brightness flag l
- Set L and F to O゛' and register T W Rtfi et al.
Subtract “1” and see if Boro-BRW is out.
(N(1,40>.At this point, Bo I'l −
If 13RW is not output ('', the input terminal (ill) is
If ``If igh'' is 41, NO, 4
Determine in step 1. (ill> is +-+ ioh
``If it is, No, return to the 3G step.''
If it is “l-(IW”), NO, step 25
to move to. In addition, (]17 n > C2
, NO, 37σ')
Until the low BRW comes out, N (1,40 steps)
Multiple times of balls] ~ appear in the judgment. When Bor+-B RW comes out at step N 0940,
The data that counts the number of pulses from the Tn]-ta (ENC)
Set data F CD to register ECD1 15, (N+1
．． 42), What is this setting data and the contents of register ECR2?
Compare (No, 43). Furthermore, register FCR2
(j, if the previously captured data is set
has been established. Here, register ECRI. If the contents of ECR2 do not match (), the lens will be moved!1
1 Since L is τ, register ECRI is
Set the contents to register ECR2 (NO, 44) l, tN
Return to Stella 1 at 0635. No. At step 43, register E CR1 and "CR
If the contents match with 2, the previously imported encoder
Pulse count l from the encoder (ENC) ~ Data is changed 1
1S does not move, that is, the lens does not move and the closest position or
Otherwise, it has reached the infinite position. follow
In this case, interrupts are disabled (NO, 45),
Output pulse to output terminal (011) (No, 46)
to forcibly stop the integral operation of COD (Fl-M).
, output terminal (012). (013) together as 'l-ow' (No, 47)
to stop the rotation of the motor (MO) and
Determine whether flag 1-O is “1” (1J)
No, 48). Note that this flag l-CF is set when the subject is
low]on I~last, and the output of C0D (FLY)
The differential calculated 4-cass ω△1- is not reliable enough.
It will become '1゛' at some point. Here (゛, flag 1-CF
When is "o", the terminal fract NF is set to '1''.
(NO, 4), l', l o, 270 in Figure 10
Move to the next step. At step NO, 270 (ma)
, the input terminal (i14) is ``+-+ iQh u's man 1
．． If (i14) is “1gh”, the AF mode is
If the mode remains selected, proceed to step N002.
to the top. On the other hand, (i14) becomes 'l-ow'
, and the flag has been switched to FA mode.
Set FPF to 1'' and connect terminals (012) and (013) to '
Set to “low” and stop the motor (MO) [-1・,
Flags ICF, LCF1', LCF3 II O1)
After that, return to step No.12. To summarize the above operation, the input from the microcontroller (MC2)
The focus detection operation command starts the COD integration and divides the COD.
and start counting the integration time of R.
Ru. At this time, if the motor < MO) is not rotating,
While this Jitf% integral time is running from 1 to 1, interrupt signal
If you have an input signal, the interrupt signal will not be generated even after the best time has elapsed.
is input and 1. (If so, force the CCD integration to stop.
Wait for the interrupt signal to be input.Meanwhile, COD
4) When the motor (MO>
If the lens is rotating, the lens will close while counting the integration time.
It is periodically determined whether or not the end position has been reached.
Even if the longest integration time has elapsed,
FJ, I-inclusive signal cannot be input and the lens has reached the end.
If not, force the integral of COD to stop and divide by 1-spoon.
It has an included signal. Also, if the lens has reached the final OMf
, disables interrupts and forcibly stops the integral, and the motor
- Stop the rotation of MO> and integrate COD again.
No, as explained later, you can check whether or not the focus is achieved by excluding ΔL.
After that, the microcomputer (MC2) to the mer(=Yn(
MCI) (to D input terminal (ill)' l-l right
” Even if the signal is input, the microcomputer <MCI)
This signal does not perform focus detection or focus adjustment.
"41" and the photometry switch (YES) closes again.
The input terminal (ill) is set to “14 right”.
Then, No, the operation starts from step 2. Now, at step No. 41i, flag l Cr' is set to pass.
When it is determined that the flag IC is ``1'', the flag IC ``1'' is determined.
is “1” (No, 51>, here
Then, if l-CF is 0°'', then CFi is If 1
II, (NO,,'+2), No, 60
Step/focusing direction flag 1-r') [is “1”?
Determine if it is a fish. In addition, for flag 1cFi, the lens position V is
Focus (so-called stupid blur state where the focus is significantly off from the 1st position)
]n1 to last are predetermined.
Flag for scanning lens positions greater than or equal to the value of
, flag ``[)I- is renormalized with △l >O'c Runs.
(front bottle) is "'1", and the lens is extended with △t<o
4 pin) is a flag that becomes 'O''.
If F D P is 1'', then O'', 0 pi T et al.
”, and the input terminal (i12) is set to “1”.
11g1+”′ is determined (No, 63
．． 64). In other words, the rotation of the motor for feeding out the lens 'l'/;
The direction is determined, and in step 63, (i12) is "'"
l-l right '”, to extend the lens
Rotate in the direction of tears [Fu musta r, NO, 6
Move to step 6 and set the terminal (012) to “tl iq
h”. Set (013) to “low”. (i12) becomes “
low”, the motor (M
O> must be rotated in the anti-Il: ¥51 direction.
Therefore, move to step NO, 65 and connect the terminal (012
) as “LOW”, (013) as “II igh”
”. Also, in step No. 64 (ii2)
If is "l-1ioh", then the renormalization of the lens requires counter-time.
You must avoid rotating the motor (MO>) in the clockwise direction.
No, 6! Move to step i. (i
If 12) is 'low', move clockwise to retract the lens.
I have to rotate the t-tar (MO), so it's good.
No, move to step 6G Pi =J. Next, No.
Step 67 is the terminal (014).
”, rotate the motor (MO) at high speed,
Move to step 270. No! Step C flag 1 of i1. -CFl is “1”
If it is determined that the
5 indicates that the end position of proximity or infinity has been reached, and the motor
Stop the motor (MO>! (No, 53), (
ill) becomes 'l, -ow' (N O,
55), flag LCF, LCf2 1.1-CF3"
(, )” and return to step 25.
Ru. First, if the contrast is low in AF mode, the output
Output '101' to PO~1~ (OPO) and display a warning
<No, 105), then flag 1-CF is
Determine whether it is "1'" (NO, 107).Here, set the flag (, C to /j("
This is the first time I've used low contrast <t =
If y is -C, set flag LCF, LCF 3 to Il
1 +1 (No, 108, 109>, No,
At step 110, the first operation (FPF=1> or not
Determine. Flag [2I) If F is '0゛°, then
The previous operation r-j: was low and the trust was low.
There is a possibility that this measurement is wrong, so please do not
, 280 and N(1,270,27
Go through step 1, return to step NO12, and repeat
Let the measurement take place. At this time, the motor was set to the previous brightness value.
It is rotating towards . In addition, when the termination flag ENF is '1', the steps of No and 11o are
If you move to step NO, 280 after passing step
The rotation of the motor (MO> is stopped, so
, input terminal (January) Buno\"l OW" is accumulated.
(No, 281), flag 1-CF, LCF3
"O"' and (N O, 282) to j"4 o, 2
In steps 5 and onwards, the operation of Dean 1 (MCI> stops 1)
: Nodame's first time! l] Perform IJ settings. Also, at the step of NO, 110, the 7 lag FPF is 1'
', it is determined that it is the first operation, and the flag FP
Set F, l-, CF 3 to O” (No, 111, 1
13>, No, def 4-cass M△ at step 205
Determine whether 1- is positive or negative. If Δ1->O is the previous bin, flag
+= o F is “1゛, if pin after ΔL-< OT’, then F
Change the lag FDP to “0” N O, 2 (16,209
), N (same as the steps from 1, 63 to θ6,
Depending on the rotation direction of the motor (MO) for feeding out the lens.
then turn the motor (MO) counterclockwise or clockwise.
Rotate. Next, at the step of NO, 212, the integration time I
I (contents of register ITR) is greater than the constant value C7, 0
It is determined whether the integral time is constant 11/1 or more.
When lower IITR)≧07), connect terminal (014)
i i! ] h” to drive the motor (MO) at high speed.
(No, 213), if the integral time is one step above the constant value,
Then, set the terminal <014) to "low" and set the T-E-ter.
(MO) is driven at low speed (No, 214), No
, go through step 270 and return to step No. 12.
, measure again! ? Il begins. This J:
After measuring 6ri, continue until the value reaches a value that is not low contrast.
First, move the lens in the E direction. The lens reaches one terminal device with low contrast.
Then, step C flag LCF1 of No. 52 is set to 1.
”, reverse the direction of movement, and repeat the measurement.
Move the lens! Ru. Furthermore, while maintaining low contrast,
From one end to the other when the other end position is reached
1 Nons has been mounted on the chassis, so No. 5s' ski
Move to step (1) and stop the operation. Furthermore, this movement
It was determined that the measured value was not low τ゛1-1~last during production.
If the answer is No, the process moves to step 101, and f
74- Perform the lens control operation that depends on the amount of waste.
If the contrast suddenly becomes low, try
Ignore the first measurement and repeat the measurement.
Even when the low contrast LCF3 is set to 1''' T- (No. 112
), set LCF 3 to ``0''° and T No. 205 (1
') step and record based on the measuring plane at this time.
Determine the direction of movement of the lenses, and then
Find the location. [△mode (MOF = 1 > tail (, knee rt
- If last tl>, from step No. 106
No. Proceed to step 115 and set the flag LCF
Pa1"', flag l-CF 1, l-CF3 wo"
0", 7 lac F I] F wo"i 1 ++, terminal
Lug 1N F 'O'', output terminal <012),
Set (013) to 'LOW' and select No.258.
Step 1, perform the operation described below, and then measure again.
Let's do it. The microcomputer (lvlcl) is No. 9-13 Nostetsov
From NO, 14, 15, 18. 19 rules 1 ma
or N (1.35 to 40, 712 to 44 loops
Well, I'm running the loop No. 36-41.
At °, the integral operation of COD (FLM) is completed and the interrupt
from the llj control circuit (COT) to the child (it)” If
When the pulse of “right” is input, My1in (MC
I) No, jump to step 70 and interrupt
Start the operation. First of all, E N C?
The value [ECr] that counts the pulses from
ii identified in CR3 (N'o, 70) 1. G C
The number of light receiving parts of D, that is, the input capo of the microcomputer (MCI) -1
'・(corresponds to the number of data input to IP(1)(
ICIC3 is set to register I')NR (NO,
71), NO, input terminal (ilo) in steps 72
Wait for 11 pulses to be input.
One. After the Δ/D conversion of the COD output is completed, the input terminal (il
When O) becomes “+1t]1”, the input boat (IPO
) One COD output data CD I' l
Nojistar M (DNR> is set (NO, 73)
. Next, 1°° is subtracted from the contents of register DNR.
He <No, 74), from this one Nojista DNR
-B r< W is output in L and N (1, 72 to 7;
) is repeated. In this way, COD
Output data CD is sequentially set in register M (DNR).
Ru. When the import of all COD output data CD is completed,
, set the return address and return to that atnos.
Perform the main operation after step No. 77.
Shift to the next flow. At step N0077, flag l-1-F is '1''?
It is determined whether Here, 1-IF is 111 +1
Then, the largest data M among the data CDs from COD
A CD is searched (NO, 78). this data
If the highest pitch 1~ of MACD is not 1″, all C
OD output data AI CD is doubled <No, 80),
Also, when it is °1°', it is 2 times 4 degrees overflow "]
- η data will appear, so just go to step 84.
move to On the other hand, if the flag L L F is “0゛′”
If so, immediately proceed to step NO, 81. In steps NO, 81 and 90, the fi
The integer part of the two images is equivalent to Rum.
and the decimal part will be recited. Furthermore, these steps
A specific example of the calculation of the shift amount in IJI, for example, American V[
No. 4333007 or JP-A-57-455 October
Although it is proposed, it is not related to the gist of the present invention.
The explanation will be omitted. NO, 82~85σ) step
, same as steps No. 10 to 13 above.
It is determined whether or not the motor (MO) is rotating. Here,
If the motor (MO) is rotating, +, f,
The count data of the number of pulses from NC) E CD is in the register.
4t (N (1,86)) is taken into CR1 per day.
Data and NO, 44 steps to 1 meli+
The system/vl is compared with the contents of register ECR2. (ECR1) = (If F(12), lens G is I18☆
Since uHL has been reached, No. 4
717) Move to the operation from step, and if ([C1 1) ≠ (ECR2), move the lens (t1
Since it has not reached the target, the contents of ECR1 will be saved by 1 TCR21.
Then, if NO, proceed to step '89 fy 1-. -h. The motor (MO) rotates (X L) J: ,
! a 'j''＞'+2 No, move to H step Δru
. No. At step 89, the input terminal (ill) h('“
Determine whether t+1l11 and select “LOW”.
ItNO, stop focus detection operation after 25th step
n, t> and initial settings are made, l-l right”
When (MaNa, move to step 00 and move to shift 1)
Remove the decimal part of No. 81 and No. 90.
Defocus based on shift 1 ~ amount calculated in step
Δ1- is calculated (NO, 91). At step NO, 92, Δ
Determine whether it is F mode or not.
To Sudetsu J of 93, "No for Δ mode, step 100.
to the top. In the case of ΔF mode, first the My-1 min (
Me 2) latches the latch circuit (L, A) +
The conversion coefficient K
Input (No, 93>, 1 of this data (3 is 0'''■
Determine whether 2 is 1″ (No, 94).Here
So, on the platform of k3-0 and 2=1, the above-mentioned sea urchin,
Since the interchangeable lens cannot operate in ΔF mode, t-
Set the flag MOF to 1°' (FA mode) and No.
Moving on to the 96th stage. On the other hand, k3-1 or
If 2=or, an interchangeable lens capable of ΔF mode is installed.
Therefore, move to step 100.
do. Furthermore, in step NO,96, kl-0?
Determine whether it is jノ, k 1-1-1”, then No, 10
Move to step 0. If kl-0, as mentioned above, 1 non-stop to the nearest position.
If you do not use the lens, it will switch to macro photography.
is attached to the head, and the scene changes to macro footage J: Udosare C
There will be. These days, too, 220 steps.
and connect the output terminal (014) to 'll igl+
” and turn the 7-ter (MO> to high)
Is the input terminal (i12) "ll igb '"?
Discriminating squid 1 no (No, 221), Coco”C
If 1 (i12) is “ll igt+” then time u1 side
Rotate in the direction 1! The lens is extended by
Set the power terminal (012) to “Higl+” and “L”
ow”, by rotating 1!- in the counterclockwise t1 direction
Since it is played out, change (013) to "++:su1)" I,
: Later, pulse 1 to data I from the encoder
Load E CD into register FECR2 (NO, 2
24). Next, set f-ta 08 for a fixed time in register TWR.
(No. 225), in this register TWR
Subtract 1'' from the value to determine whether a borrow BRW is obtained.
Repeat the different operations, and after a certain period of time the button [+ -B]
When RW appears, the pulse count from the encoder is
Load data ECD into register ECR1 < NO,
228>. Next, the contents of register ECR1 and ECR2
To determine whether they match, Nf'1.229),
(ECR1)≠(ECR2) The content of ECR1 is
Set ip to lECR2 (No, 230) and No, 22
Repeat steps 5-230. On the other hand, (ECR1)
= When (ECR2), the lens is closest to the
This means that the output terminal (012) is reached. Set (013,) to "l-ow" and motor (MO)
Stop it! : (N(1,231), flag FP
Set F to “1” (No, 232), No, 2
Go back to step. From now on, perform the eight
cormorant. No, at step 100, the data from COD is (
l(=1) It is determined whether the
A specific example of the tap will be described later based on FIG. . Here, if it is low 1 to last, the above No. 105
Move on to the next step. On the other hand, low contrast 1-las [・
If there is no error, flag 1- at step 101.
Determine whether CF is "1". Here, 1-CF is
If it is 1°', the measurement value up to the previous time is low con 1 to last.
h', 'r, so set the flag FPF to "I i 11, flag
GLCF, 1. cF1. LCF 3 to II 011 etc.
Then move to step N00290 and set the mode flag.
Refer to MOF. MOF=O, that is, AF mode (・A
If so, output terminals (012) (013) are set to “' low
” After stopping the motor (MO) 1, NO12
Return to step 2 and perform the measurement again. Also, M.O.
If F=1, that is, FA mode, NO, 240 steps.
Then, the FΔ mode operation, which will be explained later, is performed. At step N09101, flag l-CF = 1
If the measured value is not low contrast (':L, No.
, 104 refers to the mode flag MOF, and if MOF is “
1°', that is, if the Δ mode is NO, 240 steps.
If MOF is II O11, that is AFL-mode.
If so, proceed to step N 0.125. No. In steps 125 to 130, the differential A-cass suspension
Is △L within the focusing zone ZN 1?
A determination operation is performed. First, the lens is at the line end position.
has not been reached and the flag E N F is °'0° (
No, 124+) one in-focus zone -[l is reached and in focus.
Focus flag IFF is “1” <NO, 12G
), then the current measurement value 1ΔL1 and ZN 1 etc. are N
o, and compare in step 127. Here, 1△1. ,
If l<7Nl, focus display will be performed (No, 128)
, the input terminal (ill) becomes "i-ow".
(No, 12!1), No, move to step 25.
and stop the operation. On the other hand, if 1Δml, > ZNl, set the flag "1)" to 1
"", flag IFF is set to "o", NO, 13!
Move to step i and set the default based on the current measurement value.
A lens control operation is performed by suspending the dregs. Also, the lens has reached the end () and the flag E N F is
In the case of “1”, No, IΔk at step 127
If l<ZNl, display the focus (No, 128
), l△1-1≧7N If 1, the previous defocus
While displaying direction 1, go to step 124)
, and similarly to F, (ill) becomes “low”
It stops working. Here, I△L l≧ZN1
r,), the previous defocus direction remains displayed.
NO, move to step 120, but in this case,
Even when the lens is in the final position, it does not focus, and after that the motor (M
'O) is useless, so the microcontroller (MCI)
Forcibly stop production. Make sure the lens is neither in the end position nor in the focus zone.
If it is determined in steps NO, 125, 126,
, firstly No, first pass flag in step 131
It is determined whether the flag FPF is 1". Here, if the flag FPF is "O", the above-mentioned No.
Did the lens reach the end as in steps 86-88?
A determination operation is performed to determine whether (No, 132 F.13
After 4〉, move to step NO, 135, and
If F P F is '1'', just go to No. 135.
Move to step. No, in step 135 my
The focus detection command signal from the controller (MC2) is determined fl,
When the input terminal (iH) is “low”, No,
Return to step 25 and stop operation +L, '1IiOh
"No, move on to step 136. In step 136, the calculated defocus
h1ΔL and the read conversion coefficient KD are
The data N of the drive amount of the drive m4:4 (L'DR) is
7 lag F' again in the step of NO, 137
Determine whether P F is 1''.Here, flag F
If PF is '1°', first determine whether N is positive or negative.
(No, 140), if positive, focus direction flag FD
After setting P to "1" and "0'° if negative, drive
Set the absolute value of IN to Nm and set it to register ECR'1.
(No, 144), flag "P[:ga" 0
” and moves to step NO, 466. On the other hand, at step N 00137, the 7-lag FPF is
n”, the previous drive amount data is stored first.
The contents of register [cI'14 are 1 register EC]
Moved to R5 (No, 150) and instead at this point
The pulse count data from the encoder ([2NC) at
data ECD is taken into register ECR4 (No,
151). In other words, FCR5 indicates the point at which the CCD integration ends.
Data TC1 is sent to Callan 1 at this point, and ECR4 is sent at this point.
It turns out that data TO2 is set to Callan 1 in
Ru. Next, the lens during the period required for COD integration.
Since the movement amount τ-1-co-1-c1 calculates N-4
The lens movement 11 (to −T
C1-Tc2 is shut out. Here, the integration period of COD
If we assume that N is obtained at an intermediate position, then at this point
From the time when N is obtained, the lens becomes τ/2 + t
Move by o and remain in 1). Also, from N'm, which was 1q in the previous flow, the lens is moved.
Data N”m=N'm−τ−[
0 is calculated. Note that this data N''III is not required.
It is positive. In steps of N 0.155 to 157, defocus i
I'HN's ir: negative and flag F D P match,
(It is determined whether the direction has been reversed. First, No, 15
In step 5 (well, the defocus 8N that was released this time)
It is determined whether N is positive or not, and if N is positive, a flag [[]
[-0 is determined (No, 156). this
If F D P -O, the direction has been reversed, and N
Move to step 0.158, reverse if FD toe 1
Since it is not possible to turn C, go to step 159. On the other hand, if N is negative, it is determined whether FDP=1 (
No, 157), FDP=14T etc. are reversed, so
Move to step N 0.158, reverse if FDP=O
l'Jo, move to step 159 since it has not turned.
Ru. When the direction is not reversed, that is, No. 159
In step mode, the motor rotates to bring the camera closer to the focus position.
Therefore, N(1) is obtained in the middle of the integration period.
Assuming that lN1-τ/2-1o=N', C
The amount of movement due to the rotation of the motor is corrected, and then this N'
It is determined whether or not is negative (No, 160). here,
If N'< O, it means that the object has passed the in-focus position.
Set IN'l=N' and move to step 164.
Then, if N'>O, NO, step 161, until the previous time
The average of data N"m and N' stored in 1q (N"
III +N') /2=Na (NO, 161
>, this data Na is set as Nm (No, 162)
, No, move on to step 166. If the direction is reversed, that is, N 0.1! i8 station
In the step, τ/′2− from the time the current data was obtained
1-t, the focus position is in the current defocus direction by 0.
1 illll is left, INI τ / 2-L
1O=N' supplementary i-ding world is performed, No, 164
Move to the next step. No, N at step 164
``mdoN'' average (N'' m - N' )/2=Na
is sieved, and then whether this average t1rf N a is negative or not
(No, 165). Here, if Na>0, go to step 162, which is No above.
For Nano, connect terminals (012) and (013).
'l, ow' - Stop motor rotation Jl:
'c ki 1! (N(1,174), focus zone data
Multiply ZN 1 by the conversion coefficient K I) to obtain the focus zone model.
Output data Ni of motor rotation ti1 <No, 17
5). Next, check whether 1Nal<Ni.
Discrimination 'Jl (No, 176), l Na l <
If it is Ni, it is in the focus zone, so the focus flag
Set IFF to 11111 and go through step 270.
No, move on to step 2. On the other hand, 1Nal>
If it is Ni, it means that the focus zone has been passed, and the flag F is set.
PF to 1+ 1 II to 17 and similarly N 00270.
Shift the step to the light-cNO92 step and start the measurement process.
Redo the work. Now, the No. 16G step indicates the near focus zone.
Multiply K D to the data NZ to move from the near focus zone to the in-focus position.
Data corresponding to the lens drive m up to the position is output.
. Next, in step No. 167, the near focus zone (1 white
From ZN 1 and KD, Ni = 7N 1xK D derivation
to check the data of the lens drive point in the focusing zone.
Nth < sieved (No, 167 >, N Ill and
Nn is compared (No, 168 > , where N
If m≧Nn, that is, outside the near focus zone, NO, 1111
Move to step , and connect terminal (014) to 'l-1i(
Rotate the motor (MO) at high speed as I11'''-V
1■n-2]-da (ENC)
Nm -Nn f to the counter ECC for
Set (Noi82) and step No. 185.
move to On the other hand, Nm < No, that is, it is determined that it is within the near focus zone.
When separated, No. 169 stub N11l<Ni
Determine whether it is covered. Here, if Nm≧Ni, the near
Even if it is within the 8 focus zone, it is not within the focus zone.
and set the output terminal (014) to "l (IW").
Reduce the rotation speed of the motor (MO) to low speed No. 183>,
Set Nm to the counter ECC (N 0.184)
, move to Stellar 5 with N 0.185. In addition, in the case of a lens where K+) changes depending on the focal length.
, if it is not in the near focus zone, (N
Lens control is performed only on the i, but the deformation
To keep out the scum, it's NO, 1 nons from 150.
Since the amount of movement is corrected, this correction item
No, in step 182 p4rll-Nn is
Set to counter ECC. Also, if Nm<N+
If so, output terminals (012) and (013) are 'i o
w” to stop the motor (MO) (No, 171
> , set the focus flag IFF to '1'' 1) (No, 17
2), disable counter interrupts (No, 173
), No, return to step 270 and confirm again.
Carry out verification measurements. Well, No. 18! At step i, flag Fr)F is
Determine whether it is 1°°. Here, FDF is If I
If it is T+, it is the front pin, so it is the output port (OPO)” 1
00” and lights up the light emitting diode (+-Do)
Display the previous pin (NO, 186), II O
If it is II, it is the rear bottle, so the output capo + L (00 for opo>
Outputs 1°' and lights up the light emitting diode (LD2).
Then, the rear bin display is performed (No, 180). Next, the contents of this flag F'DF and input terminal (i12)
The motor (MO
) clockwise or counterclockwise L) (No,
1118.101), No, move to step 192.
(jl), is the input terminal (i13) ``11igh''?
Determine if it is. Here, the C1 conversion coefficient corresponds to the eye shadow distance u1.
I am wearing an interchangeable lens that changes depending on the time (i13).
If II + + igb II, N O, 193
In step , it is determined whether Nm<Nn. This place
If it is outside the near focus zone and Nm≧Nn, ^11
Immediately after step No. 782, l'Jo, 18
Move to step 5 and 1 = J: sea urchin, sieved Nm
Regardless of the direction signal, the motor < MO
) to avoid rotation. Next, the integral time is C
N
O, 194), in a good case the lens goes too far at the focus position.
There is a possibility that the terminal (014)
ow” and set the motor (MO> to 11) ηJJ
S12: (NO, 19!i), disable counter interrupt.
As possible (No, 196), No, 270 steps
tt, "l 'U No, return to step 2.
. On the other hand, if Stella/T″Nm<Nn of NO,193
When it is determined that the object is in the near focus zone
As with a normal single-line lens, there is no J counter interrupt.
Enable (NO, 107), step N 00270
Return to top. Also, the input terminal (i13) is "low"
Counter interrupts are also possible in the case of 1. So NO, 270
Go back to step. Now, while the Seven-Ku (MO>) is rotating, the T-Motor' (E
Counter [CG's
When the content becomes rr O++, the counter? , Sukomi roar
, NO, in steps of 200, it is
is determined. Here, if Nm<Nn, it is close
The focus zone C motor (MO) was rotating, i.e.
This means that the focus zone has been reached, and the output terminal (012),
(013) is “low” and the motor (MO> rotation
stop the rotation (No, 203 >, and set the focus flag (I).
Set F F> to °1″ and go to step N O, 270.
return. On the other hand, if Nm:;Nn, it is in the near focus zone.
This means that the output terminal f (014) is "low"
” and set the motor to low speed.No, 2o1), N11
Set the counter FCC (NO, 202> 1.7.
: Return to the address where the ltf was interrupted. Next, in step NO, 104 or NO, 290
When it is determined that the flag MOF is “1”,
No, FA mode operation is performed at step 2401.
be called. First, at step NO, 240, the flag
It is determined whether the FPF is "1".Here, [:P
If “is 1”, perform the FA mode operation for the first time.
Therefore, △1: [-Because the sword was manipulated from
, set the termination flag FNF to HQ ++, and set the focus flag f F
+-' to ``O''', focus zone determination register T
Set the focus zone dike ZN 2 on ZR. still
, this data ZN 2 is data in △F mode, 7N
1 shift is larger than 1. This is ΔF mode
In this case, use the motor drive to accurately position the lens.
It can be adjusted, but the adjustment in FA mode must be done manually.
To adjust the lens position η,
This is because it is extremely difficult to make adjustments. Next, No. 245
At the step, set the first pass flag "Plo to LL
Change to IT and move to step TN+1,246. on the other hand
If flag FP[- is “'0′”<T, immediately NO, 2
Move to step 4B and cover. At step NO, 246, the focus flag IFF is set to 1.
1111 is determined. Here, flag IF
If F is '1'', the previous disturbance value is in the focus zone.
In particular, since it is 4th round, the last time's Chai-detu Δ1-n-1 and this time's
The average value of the calculated value Δ1-, that is, Δ(-n-kuΔ1-tenΔ
The calculation l-n-1)/2 is performed (No, 247
), register Z as focusing zone data in register rZR.
W (>ZN 2) is set (N 00248)
Afterwards, the process moves to step No. 250. This is for each
There are variations in the measured values, and there are some within the -H focusing zone.
When the camera is in focus, the focus zone σmoon IJ is expanded and the camera is in focus.
Increase the probability of being identified, and ensure that the lens position is at the boundary of the focusing zone.
This is to prevent the display from flickering nearby.
be. On the other hand, at step No. 246, the focus flag I
If FF is 0'', let the current measurement value △l- be ΔLn.
No', 249), No, 250 steps
move to j"J o, 250 c7) 1△1- in ST Tsubu
nl<(IZR), that is, is the calculated value within the focus zone?
determine whether Now you can see that it is within the focus zone.
When separated, set the focus flag FF to “1” N
o, 251), by light emitting diode (+-DI)
Perform focus display (No, 24i2), N
o, move to step 258. On the other hand, outside the focus zone
If it is determined that △1-n〉0, it is determined whether
(No, 253), and if △l-n>Q, the light emitting diode
By diodes (+-, DO)]1F1 pin display, Δ1
If it is 0, display the rear bin by (+-D2>). Next, set the focus flag I F r: to II O++,
Set data ZN 2 to ZR1) and set N (1,258 steps)
Move to step. At step l'JO, 25H, enter
Determine whether the power terminal <ri4) is '111g1+'' 1
ノ, "ll right" means △ [changes to Mort]
If so, set the flag FPF to 'M' and IFF to '0'. L CF "o" + Ko IJ No, step 2
In addition, if the FA mode is set to ``LOW'', then
If the answer is No, go back to step 2 and take the next measurement. In steps 25 to 33, AF, F
Stopping the focus detection operation and setting the initial state in A mode
A fixed action is performed. First, it is assumed that interrupts are not possible (No,
25>, output a pulse to terminal (011) -CCCr)
The integral operation of is forcibly stopped (No, 26), Q;;
:Child(012>, (013> as ``"l-ow")
The motor (MO) is stopped (No. 27) and the output board is
Turn the OPO into 'o o o' to turn on the light emitting diode.
(I l) O) , (+-D I) , (LD 2
) is lit (No, 28), and the terminal (016) is
"low" and the power supply from the power line (V") stops.
It is stopped (Ill, 32). Also, - flag ENF, I
'0'' in FF, LCF 3, 1 in flag F I)
1111 is set (NO, 29-31.33)
. After completing this initial setting, return to step N002.
Ru. Next, - a modification of the above embodiment, te, △"-[--
- A subject f that is confused when shooting in focus due to the focus adjustment operation by the mode
When the j area reaches the in-focus zone, one other subject (i!
You can now check whether the area is within the depth of focus.
11, 12, and 13.
C.Explain. Here, Figure 11 shows the different parts from Figure 2.
Fig. 12 is a circuit diagram of the main parts shown in Fig. 3.
Figure 13 of main part flowchart 1-1 shows only the
Only relevant parts are shown in Figures or Figure 10/ζ Main part flow
-Char 1~. That is, the step of NO, 127
It is determined that the focus is within the in-focus zone, and the in-focus display is displayed.
is carried out (NO, 128), flag I "[-1
to ``1'' (No, 300 >, the map in Figure 11
Connect the output terminal (030) of the icon (MCI>) to "II i
! lh” (NO, 301). This output terminal (030> is the input terminal of the microcomputer <MC2)
It is connected to the child (i!i), and the microcontroller <MO2) is
By “ll right” of the human power GHf child (i5)
Determine whether the lens has reached the in-focus position. Next, the microcomputer (MCI> is NO, step 270)
``If you have not switched to Δ mode, leave it as is.
Return to step N002 and perform measurement again. this place
Since the flag IFF is II 1 II, the focus is confirmed.
After going through the same flow as in the case of authentication, go to step No. 91.
It comes to No. 91 step and No. 92 step
The flag IFF 1 is set to ``1''.
A step (No, 305) that can be determined is set up (with IC).
, if flag [F[1 is 0'', No, !112 step
Go to step 1°'4 to NO, move to step 306.
Ru. NO, at step 306, input capo-1-(IF5)
Load data from. Here, J shown in FIG. 12,
uni, step #30 and step #31 in Figure 3.
In between, the aperture value AV for exposure control IT is ■10 baud I・
(#80), and this aperture value is output from the decoder (D
The output terminal of EC> (the latch circuit is activated by the pulse from an+2>)
(+-A+). Therefore, the entrance capo
The arc of the aperture for exposure control is input to 1-(lr'2).
be done. The read data AV is converted to FNO, I'+(N
o, 307), No, at step 308 △[)-
An operation of δ×FNO is performed. Here, δ is allowed
(corresponds to the diameter of J (1r1, △D corresponds to the depth of focus
(There are 10 steps.Next, in this flow, NO,
Defocus Raku1△L l qed at step 01
ΔD is compared in 30 steps, and the following
After displaying the focus status, move to step p4 o, 270.
go Here, if 1Δ1-1≦80, then measurement 1]
Therefore, the part of the subject is within the depth of focus and the output
Output a signal of '010' to the gate (OR3) and
The light emitting diode (1-D4) shown in the figure lights up to indicate focus.
will be carried out. On the other hand, if 1△1-1〉△D, then △1
” 100 for each (OR3) depending on whether - is positive or negative
” and lights up the light emitting diode (1-D3).
The previous bin will be displayed or '001''' will be displayed.
Press to light up the light emitting dime (1-D!i> and use the rear view.
is displayed. If you perform this kind of operation, ΔFE-D
1 After the non-lens reaches the in-focus position, move the lens to the in-focus position.
The focus is on parts other than the part where the measurement was made to drive the
Whether it is in the deep thinning area or whether it is in the front or back bin.
It has very easy-to-use effects such as being able to check whether
Ru. In addition, the accurate depth of focus can be determined by step N0030B.
However, due to camera shake, etc., the measurement position may not be the same as the subject.
It is difficult to precisely match the desired part, and
Since the sieving value of ΔL also varies, in the case of the FA mode mentioned above,
In the same way, you can widen the focus zone, or set the -eye focus zone to
After that, you can widen the focus zone 11] and perform several calculations.
In order to increase the accuracy by processing the average value of the data.
You may. For example, to widen the width of the focusing zone, ΔD=lxδxF
Perform the performance of No (1 = 2-3).
If the microcontroller (MCT) stops operating in this modification example
Initial settings for "△t-mode"
For, No. 33 steps and N 0.2 steps
Between No. 273's 7th "l" and No. 12's
The step below JS is inserted between the step and the step.
ing. That is, the flag IFF 1 is set to 0''.
, 320. No, 325), output port (0'
P5) outputs "' o o o" and the light emitting diode Δ-
(LD 3), (+-04) 1l-D(+-D
5) The light is lit (No, 321.N (1,326
), set the output terminal (030> to “Low” (
N o, 322, N o, 3.27). Also, step #81 in Fig. 12 is the photometry switch (
Even after YES) is released, the display operation of the modified example described above remains the same.
Step #38 and step #39 to run for a fixed period of time.
Determine the state of the terminal (i5) between the step and the
Step (#81) is inserted. Immediately t5, photometry
The switch (YES) is opened and the A[T needle is
It is determined that (tJ, input terminal <15) is 'l-11
g1I” and the microcomputer (MCI) is in front).
If you are performing an operation to determine whether the point is within the depth
, the output terminal (ol) is not “L, ow”, but “L”
Leave l i*h ”. ji (141'lLtM2Fa17) CCD (F I
-M) NoflilJ #1ffiifW (CO17)
A specific example is a 10-way map. The counter (CO24) is
Separate sunset pulse (CP) from CO22
Click the falling edge of the cycled pulse (DP2).
The output signal of this counter (CO24) <pO) ~ (p4
), the data 1-da (DE20>4.1; output terminal
(lower 0) ~ (1-9) ni” t-l right”
Outputs a signal. The output of this counter (GO'24) and
, -i'-w -1(D F2(1) NoBsh and F
Rip flop (F F22), (F F24) (
The relationship with the Q output of FF26) and (FF28) is shown in Figure 7.
figure. (JXF margin) As is clear from Table 7, flip-flop (FF
The Q output (φ 1) of 26) is the output of the counter (CO24>).
Pato 1 when the power is between "11101" and "00101"
1g1ll, Q output of flip-flop (FF24) (
φ2) is between “00100” and “10111””
t-1igt+', flip-flop (FF22)
The Q output (φ3) is "10110" to "11110"
The output signal (φ
1). <φ 2), <φ 3) are powered from the power line (VF)
is given to C0D(FLY) while
In the group 1-, the transfer of the horse mackerel ``1 group Shingetsu is always 11.''it
j is being played. Note that this operation causes the transfer gate to
The discharge of the accumulated charge remaining in fi < r i also takes place.
. Start supplying power (Power-on Reseller 1~Circuit (P)
oR2) or 'B (D 'J t Tsul-shin Q (PO2
) t", Fritsuno flop (FF20) ~ (FF28)
. (F r” 32>, D flip-flop (DF20
). (DF22> , (DF24> , Counter (CO2
0). (CO22),' (CO24) are reset. In general, the solid flop (FF30) is sold out.
The Q output becomes 'l-l right'.
? 3 (φ1) is J: real analog switch (As2)
Continuity line 15, output potential of constant voltage source (Vrl)
<8NB) i is given to COD (FLY) through i, and this
The electric potential of the charge storage part of COD (FiM>
h one? -(Ton(MCI)+7) Output terminal (010) I
'1-1i* to start I"B G!J minute operation
When the pulse h″′ is output, the one-shot circuit (O
C flip-flop (FF30) is reset via S1B).
1: Child (φR) becomes “l OW”
Ru. According to this, C0D(FLY) is the reception of each light receiving part.
Accumulation of charges according to the light ω is started. Also, invar
(rN5o) and connect the analog switch (As 1
) becomes conductive, and the monitor output of COD is connected to the terminal (8N[3
) to the (-) terminal of the comparator (AC; 1)
do. Electric? According to the accumulation of +11, the output from the terminal (ANB)
COD'T: The two-terminal output decreases from the potential Vr1.
, when the potential of the constant voltage source (Vr2) is reached, the comparator
(The output of AC1> is inverted to 'l-1ight'. This indicates that the COD (FLM) accumulation has been completed.
I can know. This inversion creates a one-shot circuit (OS 10
) outputs a pulse of "l-11 (Ih"), and the
A flip-flop (FF) is connected via a circuit (OR20).
20) will be reviewed. Q output l-l 1g1
1” signal is a D flip at the rising edge of the terminal (φ1).
DF<DF20), and the Q output of A is “1”.
11 (Ill), the counter (CO20) is reset.
The state is released to pin 1, and the AND circuit (△NGO>, (△
N64), (AN6G), (AN68) are enabled
state. Terminal (φ1) rose to '+-+ +oh''
After that, when the terminal (1-0) becomes '+-+rwah', the flag will turn off.
Rip-flop (FF2 [1> is 1 child (TO))
l-l Igh is reset by the terminal (T1).
"Set by "tligh". This Q output
The force is from the terminal (φd) via the AND circuit (ΔN68)
rccD (FLY) as a pulse of “l-1igl+”
This signal causes the accumulated charge to be transferred to transfer group 1~
Ru. Furthermore, this (φT> signal is the microcomputer (MCI>
The interrupt width is 1 (it), and the microcomputer (MCI)
is to import the output data of the previous 14ji's CCD (ITLM).
Perform the action. This 仝ν1; 了 (ψ ding) is 8°l below “low”
Frizzo via one-shot circuit <0816)
F[1] (FF32> is set, and the Q output of A is set.
1 OW″′ is a game of J stiff AND circuit (AN68).
The gate is closed and -7 rip-flops (r' I:
The “I-1iqh” signal from the Q output of 28) is
I don't feel strong. Furthermore, one-shot circuit (O316), 7
A flip-flop (FF
30) is set, and the terminal (φR) is set again to ' If i
gb ” 1. - to do.
CCn (F L M) Empty storage v4N cargo is sequentially ended
It is output from the child (Δ○]), but the mouth electrode (lii is
, <φ2) are output during "Higl+'". Zogo Ca, 1) Q output of Noritsubu flop (D[20)
becomes “l−i iqh”, then (φ2) becomes “l
of the terminal (T4) during the period when it is on (igl+).
J to ``tl igl+'', from the ripple hold circuit (△N66), and from the terminal (T5) to ``l-(ig
At h″″, the signal (φΔ) for starting s△−[) conversion is activated.
It is output from the command circuit (AN64) htl. Also, first send from the COD (FLM) terminal (AOT).
The accumulated charge signal that is received is used for offset adjustment.
, is a charge corresponding to the leakage number of the light receiving part (J is accumulated
It is designed to have an output potential of (Vrl) and
are equal. At this time, D flip 70 knobs (DF
24) Q output is "l-1i g r+°゛"
Since the sample and hold signal (φS)
The sample hold circuit (3
1-11), and the potential for adjustment from offset cellar 1 to C
Sample from 0D (FLY) via terminal 〈△O-“)
It is stored in the hold circuit (SH1). first 4 songs
Due to the fall of fr of bull hold signal @ (φS), D flag
The Q output of the flip-flop (DF24) is 111s11''
Then, the subsequent sample hold IM M (φS)
is a ripple hold circuit via an AND circuit (ΔN72)
(8+12>), and the subsequent light reception is compared to Rp.
The potentials are sequentially applied to the sample bold circuit (St-12>
It will be remembered. D flippuff [Q output of 1 tube (DF20) is “Hi”
tlh”, the signal at (φ3) is output to the AND circuit (
Input to AND circuit (8N62) via AN60)
given to the terminal. At the first falling edge of this 〈ψ3)
The Q output of the D flip-flop ([) 22) is 'I-
1igl + ”, so the second jsu 152 (φ3
) pulse signal is passed through the AND circuit (8N62)
is applied to the input terminal (ilo) of the controller (MCI).
Transferring data from computer (MCI) to capo-1 (IPO)
This is a signal that commands import. Kokohi, D Flipf
The Q output of the drop (1) IT 20 ) is 'l''1(
Is it 4H's first AND circuit <AN60)?
(φ3) is output from the AND circuit (△N62).
I'm in parentheses so that I don't force myself 11, Mae idino J: U
Ni la's first COD (F LM> Data from Ka is off
This is because the data is for setting and adjustment. Also, (φ 3
〉 signal counter (CO2 (1) glue
: t) is given at the end, and the counter (CO20) is D
"l-l" of the Q output of the flip-flop (OF20)
The relette state is canceled by ``ight'' and from (ψ3)
The falling edge of the pulse is sent to Karan 1. This counter
(CO2(+) is equal to the number of light receiving parts of C0D ("l-M)"
The pulse from (φ3) is connected to the
Set the ripple hold circuit (CY) to "1" high. From the first time onwards, R2Ljl and
112>, the output data of COD (FI M) is sent to the signal (
φS) and resistor (R1)
, (R2), 4' subtraction circuit from Oheanfu (oΔ1)
The output of the number hold circuit (8H1) and (St
Output of i2>) 7 Which difference is launched, △-[) transformer (A
D) is applied to the ablog input terminal. A-D conversion
The device (AD) starts operating with the signal (φA), and the counter
Based on clock pulse (DP I) from (CO22)
This input data is converted into △-[]. Here, constant electricity
The output of pressure drop (Vrl) is Vrl, and the voltage drop due to leakage is
Vd, the voltage drop due to the light receiving part is Vl, and the ripple is
The output of the bold circuit (811) (, LVrl-Vd,
*) The output of the full hold circuit (sll 2) is v
ri=-\/1-vd. Therefore, the subtraction circuit
The output is vl, a 1h monthly component of only the received light u1.
There is. In addition, A-1) The converter (AD) is, for example, a successive approximation
Type 1 (later desired
Yes. C0D (Δ-1) conversion of blade data from [LM]
is completed and the carry terminal (CY) of the counter (CO20) is
becomes “Higb”. This is one shot by J.
[・Through the circuit (O814) and the OR circuit (OR22)
tefuri770tsu7 (r r'20). (FF32), D7jJtsu/'7Dtsu7 (OF20)
. (OF22) and (OF24) are replayed, and
The Q output of the lip flop (OF20) is "l-OW"
” The counter (CO20) becomes 1~ km.
Status doku1 is terminal (010) 'I-1ir+h
” returns to the state before the pulse was input. Also, the timer of the microcomputer (MC1) causes the integration time to change.
It is determined that the ship reaches a certain level and the terminal (ON) is reached.
), when the pulse of ``111st+'' is input,
This pulse ~"l ! 3 falls one 31 l- times
The flip circuit (O812) and the OR circuit (OR20>)
7II Tsubu” ([“2 (1) is 4 times.
So, after II, the output of the 21st amparator (AC1) is
II D+h” and 1.: The movement of the platform f1 is
Output data of (”::CI”) (FLY)
is converted into ∆ and becomes the input port of my input (MC; 1).
(TPO). Figure 15 is a modified example of the circuit diagram in Figure 14 with some changes.
Yes, if the output data from COD is small, my
After importing the data into 1 (MCI), the data is transferred to 2
．． 1. 71 in the microcomputer (MCI) for operations that cover +S.
~ (NO, steps 78 to 82 in Figure 8)
/Do it in hardware before performing ID conversion.
It was made by sea urchin. Constant current source while terminal (φR) is ``It igl+''
(CIS), the electric current formed by resistors (R10) to (R13)
The position ■ r1 is given to COD (Fl-M), "l-o
w”, the monitor output of COD (FLM) is 21 bars.
Rator (△C40) ~ (A Cl2) 0) <-)
Input o (J can be returned. Then, the integral is jμ and 1
- When the output reaches the VF6 power level, the comparator
The output of the controller (AC+2) becomes “l-l ioh”.
Te One Shot E “From 11th Road (OS TO)”)”
A pulse of “high” is output, and this pulse causes an OR
Circuit (OR2(+) j'i L-(Noritsubu flop
(FF20) is replayed from 1 to 1 time before and after) Same as E
Perform dynamic pressure. Furthermore, this pulse is
The knob λ is connected to the clock terminal of F32) and (OF38).
Ru. At this moment, the output of the comparator Δc12) is “l”
-1-1i°' so D flip-flop []tub (1) I
The Q output of 3(1) becomes "trigt+" and the anoroh
Good switch f (△8411>, (A838) is not conductive.
/). Here r' II (anti (R30) ~ (R40)
/7) Value R3O-R40-R3g=R48・=R3(
i/1, 5=R46/ 1.5-F<3/I/2”R
44,/2=R32/2.5=R42/2.5-
Arilog switch (△3311), (△ε;4
8) due to conduction, R30= R40= R38= R4
8, so from Δpeanzo (O△10), the signal of Vl
is output as is. On the other hand, CCD output J is low]n1~last and maximum f4
The output of the comparator (△Cl2) turns over within 1 minute.
When the time comes (, 1, the output terminal of the microcomputer (MCI) (0
One shot circuit (OS 1
2) through the 31 circuit (OR20)
'' pulse is output, and the next monitor output is V
r2~V r3. V r3 to V r4. Vr/I
〜V rl
Exclusive A circuit (EO4), ([EO2)
, D flip-flop through inpark (INS2)
(D I”36) , (1) F34) , (D F3
One of the Q outputs of 2) is "l-l igl+"
and the analog switch (Δ33c) and (A
84G), (AS34>. (△544), (AS32), (AS42) are conductive
Ru. Therefore, the integration is forcibly stopped and the current monitor
UT1.5V depending on the output! , 2Vl. 2.5Vl (R bow comes out from the operational amplifier (OA 10)
Powered. Figure 16 (, 1) The microcomputer (M) shown in Figures 8 to 10
CI) Shows a modified example of Norinosaku, - eyes, focus is detected.
The measurement results after 7 consecutive out-of-focus cases (7
The main part to flowchart 1 is l”l< l), No. 13
A flag is placed between step 0 and step No. 138.
The steps related to 1FF2 are 1Φ person. Immediately 1)
, the focus tl'J of the lens is adjusted to the in-focus zone.
, end: If flag E N F is "o" (N
0.130), N O03', +1 step
It is determined whether lag IFF 2 is ``1''.Here
So, if the flag IFF 2 is '0°', then the 7 lag r
Set FF2 to “1pa” and move to step N 03270
Then, measure again for confirmation. On the other hand, flag 1F
``If 2 is ``1'', check the measurement book 'J3 for confirmation.
times k lj T out of focus (1Δl-1;=7N1)
In this case, the flag IFF. Set IFF 2 to PaO"' and set flag "P"to" 1.
Then move to step No. 135 and refocus.
Perform adjustment operations. In addition, No. 33 Stella 1 and N
o, which question is the number 2? o, 240 steps
Flags are set between steps 241 and 241.
A final step to restore lFF2 to its initial state
(No, 34. No, 241 > is provided.
Ru. Figure 17 is No. 100 step in Figure 8, i.e. low two.
1 Steps to determine whether or not an item is trustworthy
It's a flow. First, set the contents of register C to “0”.
'C(No, 370 > , register i to '1'' (N
O, 371) Zuru. Next, the i-th and 1+1th receiver
Absolute value of the difference between the output ai and ai+i of the optical element 1ai-ai
+1 The value of 1 plus the contents of register C is 1 no register C
(No, 372 > 1 in this register i)
is added (N O, 373), and the content of this i is n (
"1 is the total number of light-receiving strands" is compared
, 374). Here, if i<n-1, NO, 3
Returning to No. 72, the absolute difference (``1 is a
When i = n-1, NO, 37! i's station
Step (j!), i.e. step NO, 375
At the time of transition to , the contents of register C are 1a1-82.
10l 112-a3 l +l a3-= a4.1
+...+j an-2-an-11+ j an-1
-an I, and as is well known, the subject = 1
The client trust is tfltl. In the step N O, 375, this value is constant 1a C
Determine whether it is larger than D, and if (C) > CD
There is enough contrast, so No, go to step 101.
If (C)≦CD, then low = 1n [Is it Herast?]
Then move to step N00105. Note that the focus adjustment state is detected using two series of light receiving element outputs.
When performing this, one series'
It is sufficient to use the output. Also, the subject's con 1
Compatible with Hellast (1G:J data is differential A-cass)
In the process of calculating the current and differential A-cass directions,
memorize this data and check if it is below a certain value.
By determining whether or not the
Even if you try to do it. (MCI>'s NO,!'+3 step is read,
For example, it is used for l\\@n. This data is based on the aforementioned
As shown in Table 6, it is divided into an exponent part and a significant figure part.
The above operation is, of course, based on the fraction of the exponent part.
Logarithmically expands the value of the significant figure part according to 1! based on the value
1. This data conversion can be performed using hardware, for example.
In the line '/, enter the numeric value next to the reading circuit.
Powered. On the other hand, for example, the index value for the F position 4 pips 1 is
It is input to the shift control circuit (130), and this shift 1
The control circuit (+30) shifts according to this index 1111.
Make the f-ri set in the toe circuit (131) shift 1.
Ru. With such a configuration, Schiff I ~ the same 'li (1
31) The significant figure 1iC1 set in
The shifted and resulting logarithmically stretched lil'f changes.
It is output from the shift circuit < 131) as the value of the manipulation coefficient.
Ru. Of course, the present invention is calculated on the camera body side.
The difference data and the conversion coefficient from the interchangeable lens
By moving the point adjustment member, the focus is automatically separated (
llll+n) data is transferred serially to pin 1
Since the IC is like this, the number of pitches of this conversion coefficient f is
Keep the number of pits to the minimum required for calculating drive amount data.
You can shorten the time by turning one step.
.

[Brief explanation of drawings]

Figure 1 t, 1 l'K of the camera system according to the invention
84 η block diagram, negative 12 diagram is a circuit diagram without showing the circuit 414 configuration, and FIG.
) Flowchart 1-1 Figure 4 shows the operation of 1? I2]
The circuit diagram shown in Figure 5 shows the specific circuit configuration of the serial data input section (SDI) of the camera (MC2).
Figure 6 is a circuit diagram showing the circuit configuration of E).
I) A light emitting diode drive circuit (+=A
FIG. 7 is a graph showing the relationship between the focal length and the conversion coefficient of a variable magnification lens having an optical system in which the conversion coefficient changes depending on the focal length.
Figures 8 to 10 are the main characters in Figure 2 (MCI).
FIG. 11 is a circuit diagram showing the main circuit configuration of the first modified example of the camera system shown in FIG. 2, and FIG. 12 aj and FIG. The main part of the flow of the corresponding microcomputer (MC2) and (MCI) is shown in Figure 1-1-Chile 1-, and Figure 14 shows the control circuit (COT) controlled by the microcomputer (MCI).
The specific circuit (+11 configuration is shown in J circuit diagram, Figure 15 is a circuit diagram that does not show the main circuit configuration of the modified example, and Figure 16 is the main part of another modified example of the flow of the microcomputer (MCI). 17 is a flowchart specifically showing the operation of the microcomputer (MCI) in FIG. 8 at steps h+o and ioo.
FIG. 3 is a circuit diagram showing the main circuit configuration of Dc). BD: Camera body, MO: Drive means, l-7, 1, I'
:1 darkest lens, Fl: focus adjustment member, 101-10
6: Transmission mechanism, lEC: data output f stage. Applicant: Minolta Camera Co., Ltd. bs f8. fof== fl, f-f-ha f-f
-f= fs fi box fh f-f9fi f-h f
s 5 crystal f-j+1□~2f4 w Figure 1.3 Figure 27 41ρI 屡・toy Figure 2f! 3θ

Claims (1)

[Claims] 1. Light from an object to be focused that has passed through an interchangeable lens is
The driving means on the camera body side is driven based on the deviation amount data 14, and the driving force is applied to the interchangeable lens. According to the automatic focus adjustment method that transfers the image formation 11° IIU to the focus adjustment unit 1 of the 1! Jul
From the same data on the right for the ζth interchangeable lens! ! , IA dynamic f-stage drive (d data is transmitted from the 7J camera body side). 2. Focus adjustment optical system and the optical system. J: A focus adjustment member for moving the focal point 1d of the object to be focused on, an attachment port to the camera body, and a drive means connected to the camera body side,
The transmission mechanism for transmitting the driving force of the driving means to the focus adjustment member has a value uniquely determined by the front a self-focus adjustment optical system and the transmission device 414, and moves the image 11 to the expected focal position. Quantitative data in series with the above-mentioned object] M +, A ′
? An automatic focusing lens equipped with data output means.