Abstract: A disk apparatus includes a slot. A magnetooptical disk is attached to the slot. When the slot is closed, a system controller inputs a corresponding signal to a CPU. The CPU applies a read-out command of disk information to the disk controller. The disk controller drives a spindle motor, an optical pick-up and a recording head in order to read-out vacant capacity information from the magnetooptical disk. The read-out vacant capacity information is sent back to the CPU, and then saved in a flash memory by the CPU.

Abstract: A digital camera includes a CPU (34). The CPU (34) is a multitasking CPU for executing in parallel an imaging task, a file recording task, and a file transmitting task. When a shutter button (32) is operated, JPEG data corresponding to an object scene is written to an SDRAM (22) by the imaging task. An image file including the JPEG data stored in the SDRAM (22) is recorded in a CF memory of a memory/LAN cartridge (30) by the file recording task. The image file recorded in the CF memory is applied to a wireless LAN card of the memory/LAN cartridge (30) by the file transmitting task.

Abstract: A digital video camera (10) includes a microphone (34). When audio data fetched through a microphone (34) and an A/D converter (36), and a plurality of screens of JPEG data generated by a JPEG codec (32) are subjected to a recording process in parallel with each other, an error of the audio data between a real processing amount (=8043 bytes/second) and a virtual processing amount (=8040 bytes/second) of the audio data is calculated by a CPU (52) every 30 frames. When the calculated error is above a threshold value, the number of frames of the JPEG data to be recorded in a recording medium (50) is adjusted by thinning-out/interpolation.

Abstract: A digital video camera (10) includes a CPU (52) mounting a multitasking OS. A plurality of frames of YUV data forming a motion image are recorded in a recording medium (50) in a compressed manner under the control of the CPU 52. Here, a plurality of tasks to be executed by the CPU (52) includes an imaging processing task in relation to a compression process of the plurality frames of the YUV data and a BG processing task in relation to a recording process of a plurality of frames of JPEG data. Furthermore, the imaging processing task includes a determining process for periodically determining a recording processing speed of the JPEG data and a changing process for changing a compression ratio of the YUV data on the basis of the determination result.

Abstract: A content recording apparatus that writes, when a recording instruction is issued, into a first area of a recording medium predetermined information indicating a predetermined value, records into a plurality of partial areas sporadically distributing in a second area of the recording medium a content to which a plurality of markers are assigned in a predetermined manner, and after completing recording the content, writes into a third area of the recording medium link information indicative of a link state among partial areas in which the content is recorded, and updates a value indicated by the predetermined information written in the first area, includes: a predetermined information detector for detecting the latest predetermined information out of the predetermined information written in the first area when a driving power is input; an area detector for detecting from the second area partial areas in a non-link state based on the link information written in the third area when the predetermined information

Abstract: A content editing apparatus (10) includes a CPU (12). When combining JPEG data and audio data forming a moving file 1 with JPEG data and audio data forming a moving file 2, the CPU (12) calculates a reproduction frequency of combined audio data based on a sampling frequency of the audio data in the movie file 1 and a sampling frequency of the audio data in the movie file 2. The calculated sampling frequency is a frequency that makes it possible to complete simultaneously the reproduction of the combined JPEG data and the combined audio data. This sampling frequency is written into the combined file.

Abstract: An electronic camera includes a CCD imager. When a motion image recording mode is selected, the depression of a shutter button creates a plurality of screens of image signals based on camera signals outputted from the CCD imager. A system controller calculates an optimal compression ratio for compressing the image signal to a target size and sets optimal compression ratio to an image compression circuit. The image compression circuit compresses a current image signal obtained following a preceding image signal with this optimal compression ratio. Such compression process creates a plurality of screens of a compressed image signals, whereby a write control circuit records the plurality of screens of the compressed image signals to a memory card.

Abstract: An electronic camera includes a mode change switch. This mode change switch selects a still image recording mode to record 1 scene of an image signal to a recording medium, and a continuous image recording mode to record a plurality of scenes of continuous image signals to the memory medium. In the still recording mode, an battery remaining capacity goes below 5%, the shutter button is disabled in operation. In the continuous image recording mode, when the battery remaining capacity goes below 25%, the shutter button is disabled in operation. These threshold values are related to a consumed power required for recording the image signal taken in each of the modes.

Abstract: A digital camera includes a timing generator. The timing generator reads shutter speed data out of a register in response to a vertical synchronizing signal outputted from a signal generator, and controls exposure by a CCD imager according to this shutter speed data. The data in the register is updated in predetermined timing based on a vertical synchronizing signal. As a result, continuous shots of a subject are performed with different exposures.

Abstract: A digital camera (10) includes an SDRAM (26). When 40 frames of image signals are accumulated in the SDRAM (26), a combined file including the 40 frames of image signals is created in a data area of a magnetooptical disk (36), and FAT information of the combined file is written into an FAT area of the magnetooptical disk (36). When a predetermined condition is satisfied, image data of the combined file is read out by each 1 frame, and an image file including the read image data is created in the data area of the magnetooptical disk (36), and the FAT information of the image file is written into the FAT area of the magnetooptical disk (36). Such the process is repeated for 40 times, and the combined file is later deleted.

Abstract: An image reproducing apparatus (10) includes a mode switch key (19) capable of switching a display mode between an image display mode and a related information display mode. When the image display mode is selected, an image reproduced from a recording medium (16) is displayed on a monitor (17), and when the related information display mode is selected, only a character relating to the image is displayed on the monitor (17). In either display mode, a monitor screen is renewed in response to an operation of a cross key (21). A CPU (15) identifies an operating manner of the cross key (21) and validates, when an on state of the cross key (21) continues more than a predetermined time period, the related information display mode.

Abstract: A digital camera includes a shutter button. After a lapse of 10 seconds from an operation of the shutter button, an image sensor is subjected to main exposure, and a compressed image signal thus obtained is recorded onto a recording medium. It is noted that a remaining amount of a battery is determined by a CPU just before the main exposure. If the remaining amount of the battery is not enough, messages are generated from a tally lamp and a speaker, and the main exposure is cancelled.

Abstract: An image reproducing apparatus includes an interface connected with a memory card recorded with a motion image file formed by a plurality of still image files. In a reproduce mode, still image files are continuously reproduced from the memory card to display a corresponding motion image on a monitor. When normal reproduction is instructed, decompression is made for each still image file in response to vertical synchronizing signal. As a result, motion images are reproduced at a normal rate. On the other hand, when high speed reproduction is instructed, after compression has been completed for a current still image file, a next still image file is promptly started of compression. Due to this, motion images are reproduced at high speed.

Abstract: A digital camera (10) includes a shutter button (50). When the shutter button (50) is depressed, a file name and size information “0” is written into a directory entry of a recording medium (44), and a movie file to which a plurality of markers are assigned in a predetermined manner is recorded in a data area of the recording medium (44). Upon completion of recording the movie file, FAT information showing a ring state of the movie file is written into an FAT area of the recording medium (44), and size information of the directory entry is rewritten. The file name of the latest movie file is stored in a non-volatile memory (M), and a CPU (46) detects the size information of the latest movie file from the directory entry based on the file name when a power switch (54) is input. When the detected size information indicates “0”, the FAT information is created based on the marker assigned to the latest movie file.

Abstract: A motion image recording apparatus includes a shutter button. When the shutter button is pressed, still image data in frames due to picture taking is subjected to compression by a JPEG CODEC. The compressed image data is written to an SDRAM that operates as a ring buffer. The compressed image data is read out of the SDRAM concurrently with such writing, and then recorded onto a memory card. As a result, long-time motion images are recorded on the memory card. However, the read rate from the SDRAM is slower than the write rate onto the SDRAM. Accordingly, the writing is suspended when a write position approaches a read position and they becomes a predetermined relationship.

Abstract: A digital camera (10) includes a CPU (46). When a power source is turned on, the CPU (46) determines an available area of a recording destination on the basis of an FAT recorded on a magneto-optical disk (44). Compressed image data created on the basis of an operation of a shutter button (48) is recorded on the determined available area. When succeeding in recording, the FAT is renewed. When failing in recording due to a defect of the magneto-optical disk (44), a message is displayed on a monitor (28). When a set key (50) is operated after displaying the message, a write protection is set on the magneto-optical disk (44).

Abstract: A motion image reproducing apparatus includes a mode change switch. If a reproduce mode is set by this mode change switch, compressed image data accommodated in a desired AVI file of a memory card is read out frame by frame in an intermittent fashion. The read-out 1-frame compressed image data is stored in an SDRAM and thereafter decompressed by a JPEG CODEC. The decompressed image data is outputted onto a monitor through the same SDRAM. As a result, a corresponding still image to the decompressed image data is displayed on a monitor screen. If decompressed image data is obtained, the compressed image data stored in the SDRAM becomes unnecessary. The unnecessary one of compressed image data will be overwritten by the succeeding one of compressed image data to be read out of the memory card.

Abstract: A data output apparatus includes a disk drive for driving a magneto-optical disk. Compressed image data recorded on the magneto-optical disk is transferred from the magneto-optical disk to an SDRAM according to a transfer instruction set in an instruction list and then output through an expansion process by a JPEG codec. A size of the compressed image data for which the transfer instruction is set in the instruction list and which has not yet been transferred to the SDRAM, and a size of the compressed image data for which the transfer instruction is set in the instruction list and which has not yet been expanded are detected by a CPU. The CPU suspends an output of an expansion instruction to the JPEG codec when a difference between the detected sizes is below a threshold value.

Abstract: A digital camera includes a shutter button. After a lapse of 10 seconds from an operation of the shutter button, an image sensor is subjected to main exposure, and a compressed image signal thus obtained is recorded onto a recording medium. It is noted that a remaining amount of a battery is determined by a CPU just before the main exposure. If the remaining amount of the battery is not enough, messages are generated from a tally lamp and a speaker, and the main exposure is cancelled.

Abstract: A digital camera includes a signal processing circuit. The signal processing circuit sequentially outputs a plurality of frames of still image data that correspond to an object image. When a shutter button is operated in an animation mode, one frame of the still image data is recorded into a magnetooptical disk in a compressed state. When a display mode 2 is selected in the animation mode, recorded latest still image data and the still image data output from the signal processing circuit are alternately selected so as to display on a monitor a moving image on the basis of the selected still image data.