摘要:
A digital camera and an image processing method in the digital camera, which make it possible to easily obtain interesting and unexpected images applied with special effects. An imaging system images a subject and converting a subject image into unaltered image data representing an unaltered image of the subject. Then, a special effect selector, which is provided with a random number generator generating a random number, selects one special effect from a plurality of special effects in accordance with the random number. A special effect image processor image-processes the unaltered image data under the special effect selected by the special effect selector so as to obtain special effect image data representing a special effect image. The special effect image data is recorded into an external memory, or sent to an external printer through a communication interface.
摘要:
A multiple-CPU system including a main CPU and at least one subordinate CPU connected thereto. Both the main and subordinate CPU are provided with a respective voltage detector circuit for detecting when a main or primary power supply voltage for the CPU's has dropped below a predetermined threshold level. When the respective detector circuit outputs a signal indicating detection of the drop in main power supply voltage, the respective CPU is placed in a standby state. However, the threshold level of the detector circuit of the main CPU is set to a voltage lower than the threshold level of the detector circuit of the subordinate CPU. As a result, the subordinate CPU is placed in a standby state before the main CPU. The main CPU is equipped with an auxiliary power supply so that when the subordinate CPU is placed in a standby state, automatic recovery is thereafter carried out by the main CPU.
摘要:
A magnetic head advancing apparatus which advances a magnetic head to be brought into contact with a magnetic recording medium (head loading) in response to a latch-type solenoid when a power supply switch is closed. The magnetic head is separated from the magnetic recording medium (head unloading) in response to a latch-type solenoid when the power supply switch is opened, when the power supply voltage drops below a predetermined level, or when the power supply (a battery) is ejected from the apparatus. This makes it possible to prevent local permanent deformation of a magnetic disk caused by prolonged abutting contact between the magnetic head and the magnetic disk.
摘要:
The gain of an envelope detector circuit for detecting the envelope of a signal read from a magnetic head is capable of being changed over between two, namely high and low, stages. The gain of the envelope detector circuit is raised when track search processing is performed. When peak position detection processing is executed for detecting the peak position of the envelope of a recorded signal with regard to a designated track, first the gain of the envelope detector circuit is raised. The gain is lowered when the envelope saturates. This makes it comparatively easy to perform envelope detection, shortens the time required and makes it possible to use even a relatively low-precision A/D converter in the envelope detector circuit.
摘要:
In a still-video camera, a video signal representing the image of a photographed subject is written in a video floppy during one revolution of the floppy, namely during an interval between one phase pulse PG and the next. Immediately after the phase pulse PG is generated, a field-shift pulse FS for reading the video signal out of an electronic image pick-up device is outputted. Read-out from the electronic image pick-up device by the field-shift pulse FS is inhibited during the time that a shutter is open. Writing is carried out from the moment of the next phase pulse PG after read-inhibit is cancelled. If the inhibition on read-out from the electronic image pick-up device were to be cancelled between the phase pulse PG and the field-shift pulse FS, read-out of the video signal by the field-shift pulse FS would be carried out, but it would not be possible to carry out recording without waiting for the next phase pulse PG. By providing reading and writing at timings as described above, it is possible to carry out recording without waiting for the next phase pulse PG.
摘要:
An apparatus for positioning a recording or playback head over a rotating recording medium, such as a magnetic disk. When access to a desired track is attempted, the head is quickly moved and placed within a range close to the track under open loop control. When the head enters the range close to the desired track, the head control is switched to servo feed under closed loop control. During the servo feed, the head is moved according to a head position signal representing the actual position of the head, the head position signal being given by a head position detector having a portion moving together with the head. The head is thus directed to a predetermined position according to an error signal corresponding to the deviation of the head position. When the head has passed through the desired position, driving force in the reverse direction is generated and the head is forced back toward the desired position. The head thus oscillates around the desired position but converges to it.
摘要:
A light source discriminating apparatus includes three photosensors, two of which have similar spectral sensitivity characteristics to each other. The apparatus senses the difference in the energy distribution of light sources by comparing the ratios of the light intensity sensed by these photosensors. In this manner, the type of a light source having a spectrum peak in the energy distribution of the light emanating from the source may be discriminated as a fluorescent light source, for example. The results of discrimination may be used effectively for adjusting white balance or shutter speed of a video or electronic still camera.
摘要:
A white balance adjusting device for use in a camera which photographs a field and forms a video signal representing the field. In the white balance adjusting device, while a sequential photographing is under way, updating of the color temperature data to be used for adjusting a white balance is prohibited. Therefore, the hues of main objects in the respective frames of still images photographed by the sequential photographic operation remain unchanged, thereby maintaining the homogeneity of the main objects. Also, in the white balance adjusting device, control a device is used to provide a short response time for a quick response property in a still mode and to provide a longer response time in a movie mode when compared with the still mode. As a result, the white balance can be adjusted according to the photographic modes of the camera.
摘要:
A video camera is arranged adjacent to a master camera with a silver halide film so as to pick up an image of the same subject as that to be taken by the maser camera. The video signals of a plurality of fields supplied from the video camera are stored in a memory. The video signals of fields of a predetermined number corresponding to the memory capacity are stored in such manner that a new input video signal is stored with erasing the oldest video signal stored therein. The video signal delayed by a predetermined fields from the oldest video signal stored in the memory is read out to supply the read out signal to a video monitor device. Responsive to a full-open signal input of a shutter in the master camera during a period after resetting, the storing operation is stopped at a predetermined timing around the input of the full-open signal, and specified video signals are read out from the memory other than that of the field for the full-open signal to send the read out signal to the video monitor device for displaying a still image.
摘要:
An apparatus for automatically providing white balance in an electronic still camera. When the camera is not in use a sliding cover is placed over the lens with a white translucent sheet facing the lens. At the beginning of use, the sliding of the lens cover to uncover the lens triggers a white balancing circuit to perform the required white balancing for the ambient light admitted through the white translucent sheet.