Abstract: A content recording apparatus (10) includes an MPEG-4 codec (34). Compressed motion image data output from the MPEG-4 codec (34) in photographing a motion image is a motion image content which expresses a continuous change with time and has an I frame allocated intermittently. A CPU (40) records the compressed motion image data onto a recording medium (38). The CPU (40) also creates motion image index data pointing each frame of the compressed motion image data output from the MPEG-4 codec (34) in parallel with the compression operation by the MPEG-4 codec (34). The created motion image index data is recorded onto the recording medium (38) by the CPU (40) every time that the I frame is specified.

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: An image recording apparatus includes a JPEG CODEC that produces JPEG data by compressing image data. Markers SOI and EOI are embedded in produced JPEG data, and such the JPEG data is recorded into a magnetooptical disk by a disk drive. Upon completion of recording a plurality of frames of the JPEG data, each frame of the JPEG data is read out into a work area of an SDRAM, and the markers SOI and EOI are detected from the read JPEG data. Index information of each frame of the JPEG data is generated on the basis of the detected markers SOI and EOI. Generated index information is recorded following a last frame of the JPEG data.

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 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 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: For use in copying data between a plurality of recording media, the present invention provides a data processing device adds up the amounts of data on a plurality of files recorded on a transmitting medium to thereby detect the total amount of copy data, displays an intermediate result of addition on a display unit while updating the result displayed during a process from the start of addition of the amounts of file data until the completion of addition and displays the final result of addition on the display unit upon the completion of addition. The user is unlikely to feel uneasy even when the detection of the total amount of copy data takes time.

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 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: A content recording apparatus (10) includes an MPEG-4 codec (34). Compressed motion image data output from the MPEG-4 codec (34) in photographing a motion image is a motion image content which expresses a continuous change with time and has an I frame allocated intermittently. A CPU (40) records the compressed motion image data onto a recording medium (38). The CPU (40) also creates motion image index data pointing each frame of the compressed motion image data output from the MPEG-4 codec (34) in parallel with the compression operation by the MPEG-4 codec (34). The created motion image index data is recorded onto the recording medium (38) by the CPU (40) every time that the I frame is specified.

Abstract: A digital camera 10 includes a CCD imager 14. When an interval photographing or an animation photographing is selected, an object is photographed by the CCD imager 14 for a plurality of times, and compressed image data is generated each photographing by each photographing. The generated compressed image data is stored in a temporary area of an magnetooptical disk 42. Upon completion of photographing the desired number of frames, the generated respective compressed image data are converted into a moving image file, and moved to a proper recording area of the magnetooptical disk 42. Frame rate information is written in the moving image file. Upon reproducing, firstly, the frame rate information is detected, the compressed image data of each frame is reproduced in accordance with this information. The moving image that moves at a desired speed is displayed on a monitor 30.

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 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: Each of a plurality of GOPs includes a plurality of frames of image data in which a start frame in a forward direction is subjected to intra-encoding and a frame successive to the start frame in the forward direction is subjected to inter-encoding. A CPU (36) designates the plurality of GOP blocks in a reverse direction. An MPEG 4 codec (38) decodes the plurality of frames of the image data included in the designated GOP in a forward direction, and a JPEG codec (40) performs intra-encoding on the plurality of frames of the decoded image data in the forward direction. The CPU (36) determines whether or not the number of frames on which the intra-encoding is performed is equal to or more than a threshold value. The JPEG codec (40) decodes in the reverse direction the plurality of frames of the image data on which intra-encoding is performed when the determination result by the CPU (36) is affirmative.

Abstract: A digital camera includes a monitor. When outputting through-images on the monitor, high-resolution YUV data outputted from a signal processing circuit is thinned out and created into low-resolution YUV data. The low resolution YUV data of a current frame is written to one of banks formed within an SDRAM in 1/15 second. On the other hand, the low resolution YUV data of the preceding frame is read out of the other bank in 1/30 second. That is, reading is made twice within 1/15 second. The low resolution YUV data thus read is thereafter processed by an NTSC encoder and outputted onto the monitor.

Abstract: A file access apparatus (10) includes a CPU (36). The CPU (36) accesses an MPEG file under control of a multi-task OS. The MPEG file contains MPEG data on a plurality of frames forming a moving image and index information used for managing the MPEG data. The CPU (36) causes an index task to issue an index readout instruction for reading out the index information from the MPEG file, and causes a main task to issue a frame readout instruction for reading out the MPEG data from the MPEG file. The frame readout instruction is issued with reference to the index information read out in accordance with the index readout instruction. Access to the MPEG file in accordance with the thus issued index readout instruction or the frame readout instruction is executed by a BG task.

Abstract: A moving image reproducing apparatus includes a CPU mounted with a real-time OS. When a set key is pressed, the CPU executes concurrently a transfer process of compressed image data and sound data from a magneto-optical disk to an SDRAM and a reproduce process of compressed image data and sound data stored in the SDRAM. Herein, the reproduce process includes a process of setting a command of transferring the compressed image data and sound data to an instruction list and a process of outputting the compressed image data and sound data stored in the SDRAM. Meanwhile, the transfer process includes a process of seeking a desired address on the magneto-optical disk by making reference to the instruction list and a process of writing desired data to a desired address in the SDRAM by making reference to the instruct on list.

Abstract: A digital camera includes a shutter button. An optimal compression ratio of an image signal fetched in response to a photographing instruction from the shutter button is predicted prior to the photographing instruction. More specifically, an image signal fetched before application of the photographing instruction is compressed by a JPEG codec, and the optimal compression ratio is predicted based on a size of a compressed image signal thus obtained. An image signal fetched in response to the photographing instruction is compressed on the basis of the optimal compression ratio, and a compressed image signal thus obtained is recorded onto a recording medium.

Abstract: A display control table comprises GUI tables <guitbl>[0] to <guitbl>[N-1] and menu tables <menu_tbl>[0] to <menu_tbl>[I-1] belonging to each of the GUI tables. Each of the GUI tables <guitbl>[0] to <guitbl>[N-1] manages a plurality of large items subjected to a display process. Also, each of the menu tables <menu_tbl>[0] to <menu_tbl>[I-1] manages a plurality of small items subjected to a display process. Assigned to each of the menu tables <menu_tbl>[0] to <menu_tbl>[I-1] are tree tables <tree_tbl>[0] to <tree_tbl>[L-1] indicative of dependency relationships with small items managed under the other GUI tables. When a desired small item is selected, a plurality of small items dependent on the desired small item are subjected to a display process, based on these tree tables <tree_tbl>[0] to <tree_tbl>[L-1].

Abstract: An electronic camera includes a mode change switch to select a camera mode. When the camera mode is selected by this switch, a real-time motion image of a subject is displayed on the monitor. If an operator operates the shutter button, a still image of the subject upon the operation is recorded in a compressed state to a recording medium. Furthermore, a black image is displayed on the monitor during a time period of from pressing the shutter button to a completion of recording the still image. If the shutter button remains pressed after completing the recording, a same still image as an image recorded is displayed on the monitor. The still image is kept displayed over a time the shutter button is being kept pressed.