Abstract: A film transportation apparatus having an electric motor as the drive source for transporting the film in which for each frame of the film to be advanced, there are provided a speed control period of, while giving a driving power to the motor, controlling its speed, and a braking period that follows. The factor of causing the speed of movement of the film by the motor to vary is examined in respect to the voltage of the electrical power source, the number of exposed frames of the film and others for the purpose of controlling the effective voltage given to the motor in the speed control period.

Abstract: A camera of the kind permitting a continuous photographing operation is provided with control means which is arranged to control a period of time between a pushing operation on a shutter release button and the start of the travel of a leading shutter curtain to be a predetermined length of time for a first frame and to control the leading shutter curtain travel starting time according to a signal indicative of completion of preparation for the shutter travel for each of a second and subsequent frames.

Abstract: A camera system capable of performing flash photography is arranged to perform pre-flashing to detect beforehand the quantity of flash light to be obtained by main flashing. The system makes a display to show whether the flash light quantity thus detected assures an adequate exposure.

Abstract: An automatic film loading device for a camera arranged to automatically feed the camera with a film to an extent of obtaining a first photographable frame portion of the film after film loading comprises first switch means arranged to open and close for every frame portion of the film; second switch means arranged to open and close a plurality of times during frame feeding; and control means arranged to count the number of times for which the position of the second switch means changes before the position of the first switch means changes after film loading and to control the number of blank frame portions to be fed up to the first of the photographable frame portions according to a counted value thus obtained.

Abstract: There is disclosed an analog-to-digital converter for a camera which is arranged to convert an analog signal of an exposure information, particularly a photometric output of a light measuring circuit into a corresponding digital signal. The analog-to-digital converter according to the present invention includes means for dividing a photometric output signal of a light measuring circuit, which is fed into an analog-to-digital converting circuit, into predetermined areas, means for level-shifting the respective ones of the divided areas of said photometric output signal, and means for feeding the level-shifted photometric output in the respective areas, separately, into the analog-to-digital converter circuit, whereby digital values are obtained, separately, in connection with the respective ones of the divided areas of the photometric output signal.

Abstract: A camera operating with selection of a plurality of automatic drive modes for setting single shooting and continuous shooting respectively, and with selection of self-timer modes for setting different self-timer periods respectively. A mode setting device for such camera is provided with a first setting operation member for changing over between the drive mode and the self-timer mode, and a second setting operation member for changing over the plurality of drive or self-timer modes successively.

Abstract: A motorized drive device for a camera comprising an electric motor and a transmission system operating with selection of at least two speed change ratios. The operation of the motor is controlled in such a way that the time point for the start of output of a stop signal for the motor alters depending on which speed change ratio is selected.

Abstract: A motorized drive device for a camera having a motor and a transmission system. The deceleration control of the motor is started when an object being driven arrives at a short distance from a prescribed stop position. The detection of a fall of the speed of the object to an abnormal low value is carried out during the deceleration control period and its preceding motor drive period by respective different processes from each other.

Abstract: A motorized drive device for a camera having an electric motor and a transmission system having at least two speed change ratios is provided with control means responsive to drop of the speed of rotation of the motor for switching the transmission system from the high speed side to the low speed side and means for indicating that the transmission system is running at the low speed.

Abstract: Disclosed are a technique that in the film feeding control of a camera, before the film is wound up, when the voltage of a battery circuit for supplying voltage to the camera is above a voltage level high enough to wind-up the film, a film winding operation is initiated, and, if this winding-up operation does not terminate normally, that the film has ended is determined and the film is rewound, and another technique that when the above-described voltage level is detected, a motor for the rewinding is used as the load of detecting the voltage level of the above-described battery circuit.

Abstract: A camera having different sequences of operations between single-frame and continous shootings. In the single frame shooting, after both charging and film winding operations have terminated, the next sequence is readied to start, while at the continuous shooting, the termination of the charging operation is made coincide with the initiation of the next sequence and it goes on until just before the shutter is opened, as the winding operation in the preceding sequence is not completed yet.

Abstract: A multiple exposure device for a camera is arranged to permit one and the same frame portion of film to be exposed to light a plurality of times. In taking a multi-exposed photograph, the device displays a multi-exposure mode; permits a manual resetting operation on the multi-exposure mode for improved operability of the camera; and computes the degree of exposure to be effected at each step of the multiple exposure to ensure an appositely exposed state of the film frame on which the multiple exposure operation is performed.

Abstract: A film transport apparatus having a spool for taking up film as it rotates, a sprocket for pulling the film in engagement with the perforations thereof toward the spool, and a windup drive system for driving the spool or the sprocket. The film transport apparatus is provided with control means for causing the windup drive system to drive both of the spool and the sprocket from the start of an auto-loading until before its termination, and then to drive only the spool at the terminal stage of the auto-loading, and detecting means for detecting that the film is not sent in the terminal stage of the auto-loading.

Abstract: A motorized camera having a reversible wind-up motor, a wind-up transmission system whose speed reduction ratio is changed over between small and large values depending on the direction of rotation of the wind-up motor, a rewind transmission system whose motion is routed to the wind-up transmisison system through the roll of film when in rewind mode, and changeover control means responsive to the initiation of a rewinding operation for setting the wind-up transmission system to the small value of the speed reduction ratio.

Abstract: A drive device for a camera in which the charging of the various portions of the camera and the film transportation are carried out by a plurality of motors individually solely used therefor, whereby control means is provided for controlling the driving of all the motors in such a manner that after the termination of the shutter operation, the initiations of current supply to the plurality of motors are displaced so that the rush currents to these motors are prevented from superimposing one upon another.

Abstract: In a camera where the light metering circuit is supplied with electrical power by pushing the shutter release button to a first stroke, an electrical power supply circuit is constructed in such a way that when the time for which the shutter release button remains at the first stroke exceeds the prescribed period of time, the electrical power supply is stopped, and then when the release button is pushed down further to a second stroke, the electrical power supply starts again.

Abstract: A multi-motor driven camera in which the shutter-charging drive torque transmission is provided with a first electric motor, the film winding drive torque transmission with a second electric motor, and the film rewinding drive torque transmission with a third electric motor whereby a charging system of high efficiency can be formed.