JPS59128527A - Automatic focussing camera having voice synthesizing device - Google Patents

Abstract

PURPOSE:To prevent voltage fluctuation due to driving of a voice generating body and to enable stable range finding by blocking the action of a voice synthesizing device in the period from applying power to a range finder to outputting a range finding completion signal. CONSTITUTION:When a switch 4 is closed linked with pushing of a shutter release button, power from a power source 3 is applied to all circuit except a flushing circuit 14. A range finder 1 generates a distance signal to an object after the lapse of some time from applying the power until the circuit operates stably. Until this time, voice signals are not sent out from an output terminal DAO of the voice composing device 2 for a specified time determined by a condenser 13, and the speaker 6 is not driven. After a specified time in which the range finder 1 completes range finding, the blockage of action of the voice synthesizing device 2 is released and enabled to operate, and various warning such as low brightness warning etc. is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a distance measuring device for automatic focus adjustment, and a voice synthesizer equipped with a voice synthesizing device that shares a power supply battery with the distance measuring device and outputs a warning by voice. Regarding autofocus cameras.

If the voice synthesizer performs an operation such as a low brightness warning while the conventional distance measuring device is performing distance measurement, a relatively large current is required to drive the sounding element "!J", causing the power supply voltage to fluctuate. ,
The distance measuring device may not be stable enough, leading to problems such as erroneous distance measuring operations.An automatic focusing camera with a voice synthesizer that can overcome these problems has not yet been provided.

Purpose This invention solves the above-mentioned inconvenience by delaying or stopping the operation of the speech synthesizer from the time when power is applied to the distance measuring device until the distance measurement completion signal is output. An object of the present invention is to provide an automatic focus adjustment camera with a voice synthesizer.

Summary The present invention relates to a distance measuring device for automatic focus adjustment, a voice synthesis device for issuing a warning by voice by sharing the power source battery with the distance measuring device, and the above-mentioned device related to shirt release operation. A power switch for turning on power to the ranging device and the speech synthesizer, and closing the power switch prevents the speech synthesizing device from operating while the ranging device is at least completing its ranging operation in the trench. and a means for preventing operation.
Embodiments of the present invention shown in the drawings will be described. In the case shown in FIG. 1, a distance measuring device 1 for automatic focus adjustment is used.
and a voice synthesizer 2 that issues various warnings by voice.
are connected to each other so that they share one power source battery 3, and are supplied with power from the power source battery 3 by a shirt release interlocking switch 4 that is initially turned on in conjunction with the shirt release operation. There is. The voice synthesis device 2 is an LSI for voice synthesis provided on the back cover side of the camera,
A speaker 6 is connected to the output terminal DAO via an amplifier circuit 5, and the electrical circuit on the camera body side, which includes the distance measuring device 1, power supply battery 3, etc., is connected to a connector that connects and disconnects when the back cover is opened and closed. It is connected at part J.

The speech synthesizer 2 has a mode switching terminal A thereof.

A changeover switch 7 is provided that can be selectively switched to terminal B and non-connected terminal 0. For example, when switching to terminal A, Japanese is selected, and when switching to terminal B, a foreign language such as English is selected.
It is possible to select the type of language and whether or not an audio warning is required, such as no audio when switched to terminal 0. The speech synthesizer 2 also selects the content of the language depending on the combination of input signals to the terminals PS1*PSI.

For example, when the terminal voltage of terminal PS is lowered to a predetermined low potential level, the message ``The shooting distance is too fast for flash photography, please move closer to the subject'' is issued, and the so-called 1 flash is issued. A verbal warning is given to the photographer that the operation is not linked 1. Also, the terminal PS,
When the voltage is lowered to a predetermined low potential level, the main message ``The subject is dark, so please use the flash 1'' is issued, the so-called 1 low brightness W warning is made, and ``Use the flash 1 is urged.'' I warn you. Furthermore, both terminals P
When both S1 and PSg are lowered to a predetermined low potential level, a message saying 1 film is not loaded, please load a new film 1 is issued.
'Warning that film is not loaded 1.

These warning words are appropriately selected depending on the content of the warning or display and are stored in advance in the speech synthesis device.

The speech synthesizer 2 is further connected to terminals Xin and Xout with a circuit 12 that forms a fundamental frequency for speech synthesis, which is composed of a resistor 8, an oscillator 9, and capacitors 10 and 11, and a reset time , an external capacitor 13 is connected that determines the mute time. The reset time by the capacitor 13 is set to a scheduled time, e.g., 50 to 60 m8, from when the power source 3 is turned on to the distance measuring device 1 until at least a distance measurement signal is obtained, and during that time, the output of the speech synthesizer 2 is No signal is output from the terminal DAO, and the speaker 6 is temporarily not driven. Here, the capacitor 13 delays the operation of the speech synthesizer 2 by closing the switch 4 until the distance measuring device 1 is turned on by the power source 3 and reaches a state where normal operation can be completed. This constitutes a type of operation blocking means.

The electric circuit on the camera body side includes the distance measuring device 1, the power supply battery 3, the shirt release interlocking switch 4, a flash circuit 14, a low brightness detection circuit 15 that outputs a high signal when the brightness is low, and these measurement devices. In response to signals from the distance circuit 11 flash circuit 14 and low brightness detection circuit 15,
A signal control circuit 16 is provided for supplying various signals to the terminals PS1+PS2 of the speech synthesizer 2 through the connector terminal J2*, :fsk of the connector part J.

The signal control circuit 16 includes AND gates 17 and 18, an OR gate 19120, inverters 21 and 22, a resistor 23, and a transistor 24125.
The output terminal of the low-luminance detection circuit 15 and the flash power switch 26 are connected to the input terminal of 8, and the output terminal of the distance measuring device 1 is connected to the input terminal of the other AND gate 170.
A power switch 26 is connected via the inverter 21 and the inverter 21 . When the distance measuring device 1 detects a photographing distance at which the flash light cannot sufficiently reach, it outputs a high signal indicating that the flash is not linked from the output terminal v out.

Also, an AND gate 17 is connected to the input terminal of the OR gate 19.
A film detection switch 27 is connected via the output terminal of and the inverter 22.

A film detection switch 27 is connected to the input terminal of the other OR gate 20 via the output terminal of the AND gate 18 and an inverter 22. Sara K, OR game) 19
The output terminal of is connected to the base of the transistor 24.
The output terminals of 20 are connected to the bases of transistors 25, respectively.

28129 in FIG. 1 is the resistance 1. in the electric circuit on the back cover side.
TI, , T4 are connector terminals in the connector part J for feeding power from the camera body side electric circuit to the back cover side electric circuit.

To explain the operation below, when the shirt release IJ + Z button is pressed and the shirt release interlock switch 4 is closed, power from the power supply 3 is applied to all other circuits except the flash circuit 14. Ru.

The distance measuring device 1 generates a distance signal corresponding to the photographing distance to the subject after some time has elapsed until the power stage rear circuit stabilizes and starts operating. At least until then, the speech synthesizer 2 is prevented from outputting a signal for speech from the output terminal DAO for a predetermined time determined by the capacitor 13, and does not drive the speaker 6. Therefore, power is stably supplied to the distance measuring device R1 during the time required for the distance measuring operation without voltage fluctuation caused by driving the speaker 6 of the power source 3, and erroneous distance measuring operations do not occur.

After the predetermined time period has elapsed when the distance measuring device 1 finishes the distance measuring operation, the speech synthesis device 2 is no longer blocked by the capacitor 13 and becomes operational, and issues warnings in accordance with the various states described below. Do it.

(1) 1 Low brightness 1 warning When the subject is dark and the low brightness detection circuit 15 outputs a high signal indicating low brightness, the AND gate 18 outputs a high signal from the off flash power switch 26 and a low brightness detection circuit. A high signal is applied to one high input terminal from the circuit 15. A high signal caused by turning off the film detection switch 27 due to the film loading state is inverted to a low signal and applied to the other input terminal of the O'R circuit 2°. As a result, a high output is applied to the base of the transistor 25 of the OR circuit 2°Irj, and the transistor 25 is made conductive.

On the other hand, the AND gate 17 connects the flash power switch 2
6 is inverted to a low signal via the inverter 21, so the distance measuring device 1 is always in an OFF state regardless of whether the output terminal Vout is given the above-mentioned non-interlocking signal or not. , and gives a low signal to one of the long swords in the OR circuit 19. The low signal from the inverter 22 is applied to the other input terminal of the OR circuit 19 in the same way as the OR circuit 20 . As a result, the OR circuit 19 receives a low signal at its input terminal and is turned off, so that the transistor 24 receives a low signal at its base and is in a non-conducting state.

As a result, the speech synthesizer 2 has its terminal PS1゜PSj
Among them, only the terminal PS2 is lowered by σ1 to the predetermined low potential level applied to the connection point 2 through the connector terminal Js'c by the conduction of the transistor 25, and at this time, the amplifier circuit 5 is connected from the output terminal DAO. An audio signal is sent to the speaker 6 via the speaker 6, and the message ``The subject is dark, so please use a flash'' is emitted from the speaker 6, ``Low brightness 1 is warned,'' ``Use 7 flash 1 is instructed.'' prompt.

([D'7 When using flash not linked to lash, please turn off the flash power switch 26.
When it is turned on, the flash circuit 14 is already prepared to perform a flash discharge operation, and
The low signal caused by turning on the flash power switch 26 is
The signal is supplied to the AND circuit 18 as is, and the signal is inverted to a high signal and supplied to the AND circuit 17 via the inverter 21.

In this case, the AND circuit 18 is always in the off state regardless of the high signal generated by the low brightness detection of the low brightness detection circuit 15, and is giving a low signal to the OR circuit 2o.
The OR circuit 20 receives a low signal from the inverter 22 and the film detection switch 27 turned off, thereby giving a low signal to the base of the transistor 25. Therefore, the transistor 25 It is maintained in a non-conductive state without being affected by the high signal from the detection circuit 15.

The other AND circuit 17 receives a high signal from the inverter 21 when the flash power switch 26 is turned on when it receives a high signal from the output terminal V out indicating non-interlocking due to the distance measuring operation of the distance measuring device l. This gives a high signal to the OR circuit 19. Therefore OR
The circuit 19 remains on regardless of the fact that it receives a low signal from the inverter 22 due to the film detection switch 27 being turned off, and gives a high signal to the base of the transistor 24. This causes transistor 24 to become conductive.

As a result of the above, the speech synthesizer 2 uses its terminal ps1.

Of PS2, only the terminal PS1 is lowered to a predetermined low potential level applied to the connection point V through the connector terminal J2 due to the conduction of the transistor 24, and at this time, the voltage is lowered to the predetermined low potential level applied to the connection point V from the output terminal DAO through the amplifier circuit 5. 6, the speaker 6 emits the following message: ``The shooting distance is too fast for flash photography.Please move closer to the subject. Encourage them to come closer. This 1-flash-linked 1-warning occurs because the AND circuit 18 is turned off when the flash power switch 26 is turned on, regardless of the presence or absence of the low-brightness detection high signal from the low-brightness detection circuit 15. This is also done when shooting at 7 rays in high brightness conditions.

4ID "Film not loaded" warning When film is loaded in the camera, the film detection switch 27 is turned off and has no effect on the operation, but when no film is loaded, it is turned on and sends a low signal to the inverter 22. Since the inverter 22 outputs a high signal by giving
20 is given a high signal from the inverter 22 regardless of other state changes such as the output from the flash power switch 26, the low brightness detection circuit 15, and the distance measuring device 1, and each OR circuit 19.20 Both output high signals to bring transistors 24 and 25e into conduction.

Therefore, the speech synthesizer 2 has both terminals PS1゜p
s, both are lowered to a predetermined low potential level, and at that time, an audio signal is applied from the output terminal DAO to the speaker 6 via the amplifier circuit 5, and the speaker 6 indicates that 1 film has not been loaded, so a new film is loaded. The main message "please 1" is uttered, warning that no film is loaded 1, and prompting you to load a new film. This will be done without fail.

The words to be emitted in each of the above warning operations are selected by the changeover switch 7 in the desired language, such as Japanese or English, and if the generation of sound is not required, it may be switched to terminal O. .

The embodiment shown in FIG.
In addition to the high signal of the interlocked external output terminal Vout given to the D circuit 17, a distance measurement completion output terminal Vpe is provided, and this output terminal v
Connect the high signal from the transistor 31 to the base of the transistor 31 connected to the terminal R8T of the speech synthesizer 2 through the additional connector terminal J5f of the connector part J, and connect the high signal from the transistor 31 to the base of the transistor 31 connected to the terminal R8T of the voice synthesizer 2. A high signal related to the completion of distance measurement is applied from the output terminal Vp, and the transistor 3
The operation of the speech synthesizer is prevented until the signal 1 becomes conductive. Here, the transistor 31 is connected to the switch 4
When the distance measuring device 1 is closed, a semiconductor switch serves as an operation blocking means that works to prevent the voice synthesizer from operating until the distance measuring device 1 is powered on and distance measurement is completed.

The output terminal Vo of the distance measuring device 1 is connected to the base of the transistor 31.
A signal from the ut may be given, and depending on the type of signal given, the timing at which the speech synthesizer is enabled can be set at any time.

The distance measuring device is a phase-difference type focus detection device that is configured to detect the direction of out-of-focus as well as the direction and amount of deviation of the image point from the expected imaging plane. Even in a camera configured to drive the photographing optical system to the in-focus position based on the out-of-focus direction obtained by one detection operation of the device and the signal indicating tk, at least the By providing an operation blocking means for preventing the voice synthesis device from operating until the focus detection device outputs the above signal, malfunction of the focus detection device can be prevented.

Effects According to the present invention, in an automatic focus adjustment camera with a voice synthesis device, which includes a distance measurement device for automatic focus adjustment, and a voice synthesis device that uses a power battery in common with the distance measurement device to issue a warning by voice. , the closing of the power switch for turning on the power to both devices in connection with the shirt release operation, and the above-mentioned sound until the distance measuring device reaches a state in which it can at least complete normal distance measuring operation. Since the voice synthesizing device is provided with the operation preventing means for preventing the operation of the synthesizer, the speech synthesizer is not operated until the distance measuring device reaches a state in which it can perform normal distance measuring operation even without food after the power is turned on. Therefore, the distance measuring device can perform distance measuring operations in a stable power supply state without fluctuations in power supply voltage due to operation of the voice synthesizer, and erroneous ranging operations do not occur.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram showing one embodiment of the present invention, and FIG. 2 is a partial electric circuit diagram showing another embodiment. 1... Distance measuring device, 2 speech synthesis device, 3... Power battery, 4... Shirt release interlocking switch (tM switch), 6... Speaker, Applicant Minolta Camera Co., Ltd., \ Agent Goho - Keiji Hot) p

Claims (3)

[Claims] (1) A distance measuring device for automatic focus adjustment, a voice synthesis device for issuing an audio warning by sharing a power supply battery with the distance measuring device, and the distance measuring device in connection with the shirt release operation. A power switch for supplying power to the device and the speech synthesizer; and 1. From the closing of the power switch. An automatic focus adjustment device with a voice synthesizer, characterized in that the automatic focus adjustment device includes an operation preventing means for preventing the operation of the voice synthesizer at least until the distance measuring device completes the distance measuring operation. (2) The automatic focusing camera with a voice synthesizer according to claim 1, wherein the operation blocking means is a capacitor for delaying the operation of the voice synthesizer. (3) The automatic focus with voice synthesizer according to claim 1, wherein the operation blocking means is a semiconductor switch that controls the operation of the voice synthesizer in response to a ranging completion signal from the distance measuring device. adjustment camera