JP2006157768A - Photographing apparatus, method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten a time required to record image data while suppressing power consumption. <P>SOLUTION: A recording and reproducing device 1 has a power saving mode and a non power saving mode both prepared as power modes when a camera mode is set. The power saving mode is a mode where the number of revolutions of a disk 2 is set lower than that when data are recorded and an optical head is brought into an out-of-focus state. The non power saving mode is a mode where the number of revolutions of the disk 2 is set to that when data are recorded, and a focus of the optical head is locked and the optical head is brought into a state that data can be recorded. When a user does not operate a shutter button, the power saving mode is set, and when a user pushes the shutter button by half, the non power saving mode is set. The present invention is applicable to a photographing apparatus that uses a disk as a recording medium. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an image capturing apparatus, method, and program, and more particularly, to an image capturing apparatus, method, and program that can reduce the time required to record image data while suppressing power consumption.

  In recent years, like Hi-MD (Registered Trademark) standard discs, it is the same size as conventional MD (Mini Disk) standard discs, and not only music data but also various data such as image data are FAT (File Allocation). The magneto-optical disk that can be recorded in the table format has become widespread. Therefore, a digital camera using a magneto-optical disk such as a Hi-MD standard disk as a recording medium has been proposed.

  In the case of a digital camera using such a disc as a recording medium, in order to shorten the time from recording to recording of image data obtained by shooting on the disc, the rotational speed of the disc is always set to It is effective to set the rotation speed at the time of data recording.

  That is, assuming that the number of rotations of the disk is set to a number of rotations at which data can be recorded after shooting is performed and image data to be recorded on the disk is actually obtained, the number of rotations at which data can be recorded is set. Until this time, the recording of the image data cannot be started, and the time from when the image data is obtained until the recording is completed becomes longer.

  However, in order to give priority to shortening the time taken to record the image data, if the rotation speed of the disk is always set to the rotation speed at the time of data recording, naturally the data is recorded. Considering that the power consumption is large and the battery capacity is finite compared with the case where the number of revolutions of the disk is set low or the rotation is stopped, the continuous shooting time (1 The time that can be taken with one charge) will be shortened.

  The present invention has been made in view of such circumstances, and is intended to reduce the time required to record image data while suppressing power consumption.

  The photographing apparatus of the present invention is a photographing apparatus using a disc as a recording medium, which is equipped with an autofocus function in which focusing is performed by half-pressing the shutter button and photographing is performed by pressing the shutter button halfway. The detection means for detecting that the shutter button is half-pressed, and the state of the disc until the detection means detects that the shutter button is half-pressed, and the image data obtained by photographing It is characterized by comprising a control means for controlling to rotate at a rotation speed lower than the rotation speed at the time of recording or to stop the rotation.

  The control means sets the state of the disc to the state of rotating at the number of rotations when recording image data obtained by shooting, and a predetermined time has elapsed without detecting that the shutter button has been half-pressed. At this time, it is possible to control the state of the disc so as to be in a state of rotating at a rotational speed lower than the rotational speed at which image data obtained by photographing is recorded or in a state of stopping the rotation.

  The control means can control the state of the disc by setting the number of rotations when the image data obtained by the previous photographing is completed to a number of rotations lower than the number of rotations when recording the image data. .

  The control means further controls the head for recording data on the disk so that the focus control to the disk is not performed until the detection means detects that the shutter button is half-pressed. Can be.

  The shooting method of the present invention is an image pickup apparatus using a disc as a recording medium, which is equipped with an autofocus function in which focusing is performed by half-pressing the shutter button and shooting is performed by pressing the shutter button halfway. In this shooting method, the state of the disc is obtained by shooting until a detection step for detecting that the shutter button is half-pressed and until it is detected by the processing of the detection step that the shutter button is half-pressed. And a control step for controlling the rotation so that the rotation is stopped at a rotation speed lower than the rotation speed at which the recorded image data is recorded.

  The program according to the present invention is used for shooting in a shooting apparatus using a disc as a recording medium, which is equipped with an autofocus function in which focusing is performed by half-pressing the shutter button and shooting is performed by pressing the shutter button halfway. A program for causing a computer to execute processing, a detection step for detecting that the shutter button has been half-pressed, and a state of the disk until it is detected that the shutter button has been half-pressed by the processing of the detection step And a control step for controlling the rotation so that the rotation is reduced at a rotation speed lower than the rotation speed at which the image data obtained by photographing is recorded or the rotation is stopped.

  In the photographing apparatus and method and the program according to the present invention, the state of the disk is lower than the number of rotations when recording image data obtained by photographing until it is detected that the shutter button is half-pressed. It is controlled so as to be in a state of rotating at a rotational speed or in a state of stopping the rotation.

  According to the present invention, power consumption can be suppressed. Further, this can be realized while reducing the time taken to record the image data.

  Embodiments of the present invention will be described below. The correspondence relationship between the invention described in this specification and the embodiments of the invention is exemplified as follows. This description is intended to assure that embodiments supporting the claimed invention are described in this specification. Therefore, although there is an embodiment which is described in the embodiment of the invention but is not described here as corresponding to the invention, it means that the embodiment is not It does not mean that it does not correspond to the invention. Conversely, even if an embodiment is described herein as corresponding to an invention, that means that the embodiment does not correspond to an invention other than the invention. Absent.

  Further, this description does not mean all the inventions described in this specification. In other words, this description is for the invention described in the present specification and not claimed in this application, i.e., the existence of an invention that will be filed in the future or added by amendment. There is no denial.

  According to a first aspect of the present invention, there is provided a photographing apparatus having a recording medium as a recording medium equipped with an autofocus function in which focusing is performed by half-pressing the shutter button and photographing is performed by pressing the shutter button halfway. A photographing apparatus (for example, the recording / reproducing apparatus 1 in FIG. 1), and a detection unit (for example, the operation unit 22 in FIG. 1) that detects that the shutter button is half-pressed, and the shutter button is half-cut by the detection unit. Until it is detected that the disk has been pressed, the disk is in a state where it rotates at a rotational speed lower than the rotational speed when recording image data obtained by shooting, or in a state where the rotation is stopped. And control means (for example, the recording / reproducing unit 28 in FIG. 1) for controlling as described above.

  According to a fifth aspect of the present invention, a recording medium is provided with an autofocus function in which focusing is performed by half-pressing the shutter button and shooting is performed by pressing the shutter button halfway down. A photographing method of the photographing apparatus (for example, the recording / reproducing apparatus 1 in FIG. 1), which includes a detection step (for example, step S3 in FIG. 2) for detecting that the shutter button is half-pressed, and the processing of the detection step. Until it is detected that the shutter button is half-pressed, the state of the disk is rotated at a rotation speed lower than the rotation speed when recording image data obtained by photographing, or the rotation is stopped. And a control step (for example, step S5 in FIG. 2) for controlling to achieve the above state.

  Also in the program according to the sixth aspect, the embodiment (however, an example) to which each step corresponds is the same as the photographing method according to the fifth aspect.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a hardware configuration example of a recording / reproducing apparatus 1 to which the present invention is applied.

  The recording / reproducing apparatus 1 is an audio function that reproduces music data recorded on a disk 2 inserted in a slot formed in a housing or records sound data obtained by collecting sound on the disk 2, for example. And a portable device having a camera function for recording image data obtained by photographing on the disk 2.

  The user operates a switch or the like provided on the surface of the housing of the recording / reproducing apparatus 1 to select an audio mode that is a mode for using the audio function and a camera mode that is a mode for using the camera function. Either mode can be selected.

  The disk 2 is, for example, an MD (registered trademark) standard magneto-optical disk or a Hi-MD (registered trademark) standard magneto-optical disk having the same size as the MD standard disk and capable of recording data in the FAT format. It is. As the disk 2, an optical disk such as a readable / writable CD (Compact Disc) or a DVD (Digital Versatile Disk) may be used in addition to the hard disk.

  As shown in FIG. 1, the recording / reproducing apparatus 1 includes a main block 11 and a camera block 12.

  The main control unit 21 of the main block 11 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), and the like, and controls the operation of the main block 11. Further, the main control unit 21 controls the camera control unit 61 of the camera block 12 via the serial bus 51 and also controls the operation of the camera block 12.

  For example, when the audio mode is set as the mode of the recording / reproducing apparatus 1, the main control unit 21 reproduces music data recorded on the disc 2 in accordance with an operation signal from the operation unit 22, or music data Is recorded on the disc 2. Further, when the camera mode is set as the mode of the recording / reproducing apparatus 1, the main control unit 21 displays image data recorded on the disc 2 in accordance with an operation signal from the operation unit 22, or a camera block. For example, the image data obtained by photographing is recorded on the disk 2 by controlling each of the units 12.

  The operation unit 22 includes various buttons such as a mode switch, a button operated when instructing playback of music data and recording, a shutter button operated when instructing photographing, and a button operated when displaying a photographed image. The user's operation on the button is received, and an operation signal representing the content of the operation is output to the main control unit 21.

  A USB I / F (Universal Serial Bus Interface) 23 is an interface with an external PC (Personal Computer), and transmits and receives data to and from the PC via a USB cable according to control by the main control unit 21. For example, various data in addition to music data are transmitted (downloaded) from the external PC to the USB I / F 23. Data received by the USB I / F 23 is supplied to the main control unit 21 and the recording / reproducing unit 28. In addition, music data, image data, and the like read from the disk 2 and supplied from the recording / playback unit 28 are transmitted (uploaded) from the USB I / F 23 to an external PC.

  The audio signal processing unit 24 performs, for example, 1-7 RLL (1-7 Run-Length Limited coding) modulation processing on the music data collected by the microphone 27 and supplied from the audio input / output unit 25. The obtained data is output to the recording / reproducing unit 28. The audio signal processing unit 24 performs 1-7 RLL demodulation processing on the music data read from the disk 2 and supplied from the recording / reproducing unit 28, and the obtained data is sent to the audio input / output unit 25. Output.

  The audio input / output unit 25 causes the speaker 26 to output sound corresponding to the music data supplied from the audio signal processing unit 24. The audio input / output unit 25 outputs music data representing the sound collected by the microphone 27 to the audio signal processing unit 24.

  The recording / reproducing unit 28 uses the buffer 29 as appropriate according to the amount of data to be read / written (reproduced / recorded), and reads data recorded on the disk 2 and records data on the disk 2. For example, the recording / reproducing unit 28 outputs the music data read from the disk 2 to the audio signal processing unit 24 and records the music data supplied from the audio signal processing unit 24 and the USB I / F 23 on the disk 2. The recording / reproducing unit 28 outputs the image data read from the disk 2 to the main control unit 21 and the USB I / F 23, and the image data supplied from the main control unit 21 and the USB I / F 23 to the disk 2. Let me record.

  An NVRAM (Non Volatile RAM) 30 is a non-volatile memory and stores various data processed by the main control unit 21.

  The camera control unit 61 of the camera block 12 is connected to the main control unit 21 of the main block 11 via the serial bus 51 and controls each unit of the camera block 12 according to control by the main control unit 21.

  For example, the camera control unit 61 controls the photographing unit 62 to perform photographing, compresses image data obtained by photographing using a JPEG (Joint Photographic Experts Group) system, and compresses the compressed data to the main control unit 21. Output to. The image data output to the main control unit 21 is supplied to, for example, the recording / reproducing unit 28 and recorded on the disc 2.

  Further, when the image data read from the disk 2 is supplied from the main control unit 21, the camera control unit 61 displays an image on the display unit 64 based on the supplied image data.

  The imaging unit 62 includes an imaging device such as a CMOS (Complementary Mental Oxide Semiconductor) or a CCD (Charge Coupled Device). To 61.

  The photographing unit 62 has a configuration that realizes an autofocus function. Therefore, when the operation unit 22 detects that the shutter button has been half-pressed by the user, and when this is notified from the main control unit 21 to the camera control unit 61, shooting is performed according to control by the camera control unit 61. For example, the unit 62 focuses on the subject in the center of the photographing range at that time, and performs photographing in response to detecting that the half-pressed state is pressed deeply.

  The buffer 63 temporarily stores data processed by the camera control unit 61.

  The display unit 64 includes, for example, an LCD (Liquid Crystal Display), and displays an image based on the image data supplied from the camera control unit 61.

  In the recording / reproducing apparatus 1 having such a hardware configuration, two modes of a power saving mode and a non-power saving mode (normal mode) are prepared as power modes when the camera mode is set. .

  In the power saving mode, the recording / reproducing unit 28 sets the rotational speed of the disk 2 to be lower than the rotational speed at the time of recording data, and defocuses the optical head for recording data on the disk 2. In this mode, the focus control is not performed.

  In the non-power saving mode, the recording / reproducing unit 28 can set the number of rotations of the disk 2 to the number of rotations when recording data, and can lock the focus of the optical head and record data. It is a mode to make.

  In the power saving mode, the rotation speed of the spindle motor is lowered and the focus is not achieved, so that power consumption can be suppressed compared to the non-power saving mode.

  Such mode switching is performed in response to the user operating a shutter button provided on the surface of the casing of the recording / reproducing apparatus 1.

  For example, the power saving mode is set when the user does not operate the shutter button, and the non power saving mode is set when the user presses the shutter button halfway and focuses on the subject by the autofocus function. (The power saving mode is canceled). The non-power-saving mode set by the user half-pressing the shutter button is canceled when the shutter button is pressed deeply from the half-pressed state and image data obtained by shooting is recorded on the disc 2. . At this time, the power saving mode is set again.

  That is, basically, the non-power-saving mode is set from when the user presses the shutter button halfway until the recording of the image data is completed, and the power-saving mode is set otherwise. (In practice, as will be described later, the state of the non-power-saving mode is maintained for a predetermined time after the data recording is completed).

  When the user presses the shutter button halfway and the subject is focused, shooting is performed immediately after that, and image data to be recorded on the disc 2 is obtained. The power saving mode is canceled before the recording is performed, and the non-power saving mode in which data can be recorded on the disk 2 is entered, so that data can be recorded on the disk 2 or the disk 2 only when necessary. The mechanism is driven, so that power consumption can be suppressed.

  In addition, the power saving mode is not canceled when the shooting is performed and the image data to be recorded on the disk 2 is actually obtained, but the power saving mode is canceled when the shutter button is half-pressed. The time to prepare for recording data (increasing the number of rotations of the disk 2, locking the focus, etc.) can be secured between the time when the shutter button is pressed halfway and the time when the shutter button is pressed deeply. As a result, it is possible to reduce the time taken to record the image data as compared with a case where preparation for recording data is started after the image data is actually obtained. In addition, the time interval at which photographing can be performed can be shortened.

  Next, the disc control processing of the recording / reproducing apparatus 1 will be described with reference to the flowchart of FIG.

  In step S1, when the camera mode is set by the user, the main control unit 21 controls a power supply unit (not shown) to activate the camera block 12 by supplying power.

  In step S2, the main control unit 21 controls the recording / reproducing unit 28, determines the type of the disk 2, and adjusts the output of the laser by performing trial writing of data in the calibration area prepared on the disk 2. I do. At this time, the main control unit 21 sets the power saving mode and controls the recording / reproducing unit 28, for example, so that the rotational speed of the disk 2 is lower than the rotational speed at the time of recording, and the optical head. Remove the focus of.

  In step S3, the main control unit 21 determines whether or not the shutter button is half-pressed based on the output from the operation unit 22. If it is determined that the shutter button is not half-pressed, the main control unit 21 proceeds to step S4.

  In step S4, if the non-power-saving mode is currently set, the main control unit 21 determines whether or not a predetermined time such as 30 seconds has elapsed since the non-power-saving mode was set. Determine.

  When it is determined in step S4 that the predetermined time has not elapsed, the main control unit 21 performs the processing after step S3, and when it is determined that the predetermined time has elapsed, the main control unit 21 proceeds to step S5 and proceeds to the power saving mode. Set. The main control unit 21 controls the recording / reproducing unit 28 to lower the rotational speed of the disk 2 and to bring the focus out of focus.

  The rotational speed (speed) of the disk 2 is set as follows.

  For example, when the torque of the spindle motor used in the recording / reproducing apparatus 1 is relatively low, assuming that the linear velocity when recording data is four times the reference linear velocity (1.2 m / sec), power saving The linear speed of rotation of the disk 2 in the mode is set to double speed.

  Further, when the torque of the spindle motor used in the recording / reproducing apparatus 1 is relatively high, assuming that the linear velocity when recording data is four times the reference linear velocity, the disk 2 rotates in the power saving mode. Is in a stopped state.

  Furthermore, when the torque of the spindle motor used in the recording / reproducing apparatus 1 is intermediate between the above two cases (medium level), the linear velocity at which data is recorded is 4 of the reference linear velocity. If it is double speed, the linear speed of rotation of the disk 2 in the power saving mode is set to single speed.

  As described above, the rotational speed of the disk 2 in the power saving mode is, for example, the image data obtained by shooting after the shutter button is half-pressed according to the torque of the spindle motor used in the recording / reproducing apparatus 1. Before the recording is started, the speed is adjusted so that the data can be recorded again.

  On the other hand, if the main control unit 21 determines in step S3 that the shutter button is half-pressed based on the output from the operation unit 22, the process proceeds to step S6.

  In step S6, the main control unit 21 determines whether or not the power saving mode is currently set. If it is determined that the power saving mode is set, the main control unit 21 proceeds to step S7 and cancels the power saving mode. To set the non-power saving mode.

  That is, when the shutter button is half-pressed, it is considered that image data to be recorded on the disc 2 can be obtained thereafter. Therefore, the main control unit 21 controls the recording / reproducing unit 28 to set the rotation speed of the disc 2. The number of rotations at which data can be recorded is set, and the focus is locked to prepare for recording data on the disk 2. If it is determined in step S6 that the power saving mode has already been canceled, the process in step S7 is skipped.

  In step S <b> 8, based on the output from the operation unit 22, the main control unit 21 performs shooting and recording of image data on the disk 2 when the shutter button is pressed deeply from the half-pressed state. For example, the main control unit 21 controls the camera control unit 61 to perform shooting, and when image data obtained by shooting is supplied from the camera control unit 61 via the serial bus 51, recording is performed. The playback unit 28 is controlled to record it on the disk 2.

  When the recording of the image data is finished, the main control unit 21 controls the recording / reproducing unit 28 to seek the position of the optical head to the next recording position of the image data, and then returns to step S3, and thereafter. Repeat the process.

  With the above processing, the power saving mode is canceled at the timing when the shutter button is half-pressed, and the time required to record image data can be shortened while suppressing power consumption.

  In the above description, in the power saving mode, the rotational speed of the disk 2 is lowered and the focus of the optical head is removed. However, only the rotational speed of the disk 2 is maintained while the focus is locked. On the contrary, the rotational speed of the disk 2 may be kept at the rotational speed at the time of data recording, and only the focus may be removed. In other words, any state may be set in the power saving mode as long as power consumption can be suppressed as compared to data recording.

  Here, an actual measurement value of power consumption required for the rotation of the disk 2, servo control, and the like when the state of the disk 2 in the power saving mode is the STILL state, the SUSPEND state, and the STOP state will be described.

  Here, the STILL state refers to a state in which the FOCUS servo and TRAKING servo are turned on and data can be written to and read from the disk 2, and the SUSPEND state refers to the FOCUS servo and TRAKING servo. A state in which the disk 2 is turned off and the disk 2 is rotated at a constant frequency. The STOP state is a state where the rotation of the disk 2 is stopped.

  FIG. 3 is a diagram showing measured values of power consumption when the disk 2 is in the STILL state. When the FOCUS servo and TRAKING servo are turned on and the disk 2 continues to rotate at any frequency (frequency at which data can be recorded) and in power saving mode, the integrated power per minute (mWh / min) The integrated power value that is the value of 19.8 mWh / min.

  FIG. 4 is a diagram showing measured values of power consumption when the disk 2 is in the SUSPEND state. When the FOCUS servo and TRAKING servo are turned off, the disk 2 is also in the power saving mode at the frequency when the previous writing was completed (the frequency when the image data obtained by the previous shooting was recorded on the disk 2). When the rotation is continued, the integrated power value is 14.41 mWh / min. Further, when the FOCUS servo and TRAKING servo are turned off and the disk 2 continues to rotate even in the power saving mode at a rotation frequency of 15 Hz, the integrated power value is 14.44 mWh / min.

  Similarly, if the FOCUS servo and TRAKING servo are turned off and the disk 2 continues to rotate even in the power saving mode at a rotation frequency of 10 Hz, the integrated power value is 14.37 mWh / min, and the FOCUS servo and TRAKING servo are turned off. Assuming that the rotation of the disk 2 is continued even in the power saving mode at a rotation frequency of 5 Hz, the integrated power value is 14.31 mWh / min.

  FIG. 5 is a diagram showing measured values of power consumption when the disk 2 is in the STOP state. When the rotation of the disk 2 is stopped in the power saving mode, the integrated power value is 14.31 mWh / min.

  FIG. 6 shows the measured values of the time taken to access the area (next target) where image data is recorded from each state with the state of the disk 2 in the power saving mode as STILL state, SUSPEND state, and STOP state. FIG.

  As shown in FIG. 6, in the STILL state, it takes 0.10 seconds to access the next target from the state where the disk 2 is rotated at an arbitrary number of rotations.

  Further, as shown in FIG. 6, in the SUSPEND state, it takes 0.62 seconds to access the next target from the state in which the disk 2 is rotated at the frequency when the previous writing is completed. From the state where the disk 2 is rotated at 15 Hz, the time taken to access the next target is 1.33 seconds. Similarly, in the SUSPEND state, the time taken to access the next target from the state where the disk 2 is rotated at 10 Hz is 1.75 seconds, and from the state where the disk 2 is rotated at 5 Hz, It takes 2.14 seconds to access the target.

  As shown in FIG. 6, in the STOP state, the time taken to access the next target from the state where the rotation of the disk 2 is stopped is 2.74 seconds.

The following can be understood from the results shown in FIGS.
(1) There is almost no difference in the integrated power value between the SUSPEND state and the STOP state.
(2) In the SUSPEND state, the higher the rotational frequency, the larger the integrated power, but at most (even at 15 Hz and 5 Hz), the difference is about 0.1 mWh per minute.
(3) Access to the next target from the STILL state and the time it takes to access the next target and the SUSPEND state (the state of the SUSPEND state that is rotated at the frequency at which the previous write was completed) The difference in the time required for this is 0.52 seconds.

  Considering that the difference between the accumulated power value in the STILL state and the accumulated power value in the SUSPEND state is relatively large as shown in FIG. 6 and the above (particularly, (3) above), the consumption It can be seen that the preferred method of controlling the disk 2 in the power saving mode with a balance between power and access time is a method of rotating in the SUSPEND state and at the frequency at the time of the last writing. .

  The series of processes described above can be executed by hardware, but can also be executed by software. In this case, the device for executing the software is constituted by, for example, a personal computer as shown in FIG.

  In FIG. 7, the CPU 101 executes various processes according to a program stored in the ROM 102 or a program loaded from the storage unit 108 to the RAM 103. The RAM 103 also stores data necessary for the CPU 101 to execute various processes as appropriate.

  The CPU 101, ROM 102, and RAM 103 are connected to each other via a bus 104. An input / output interface 105 is also connected to the bus 104.

  The input / output interface 105 includes an input unit 106 including a keyboard and a mouse, a display including an LCD, an output unit 107 including a speaker, a storage unit 108 including a hard disk, and communication processing via a network. A communication unit 109 is connected.

  A drive 110 is also connected to the input / output interface 105 as necessary. A removable medium 111 composed of a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is appropriately inserted into the drive 110, and a computer program read from the removable medium 111 is installed in the storage unit 108 as necessary.

  When a series of processing is executed by software, a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a network or a recording medium into a general-purpose personal computer or the like.

  As shown in FIG. 7, the recording medium is distributed to provide a program to the user separately from the main body of the apparatus, and includes a magnetic disk (including a flexible disk) on which the program is recorded, an optical disk (CD- ROM (Compact Disk-Read Only Memory), DVD (including Digital Versatile Disk)), magneto-optical disk (including MD (registered trademark) (Mini-Disk)), or removable media 111 made of semiconductor memory, etc. In addition, it is configured by a ROM 102 on which a program is recorded and a hard disk included in the storage unit 108 provided to the user in a state of being incorporated in the apparatus main body in advance.

  In the present specification, each step includes not only processing performed in time series according to the described order but also processing executed in parallel or individually, although not necessarily performed in time series.

It is a block diagram which shows the hardware structural example of the recording / reproducing apparatus to which this invention is applied. It is a flowchart explaining the disk control processing of a recording / reproducing apparatus. It is a figure which shows the measured value of the power consumption when a disc state is set to a STILL state. It is a figure which shows the measured value of the power consumption when a disk state is set to a SUSPEND state. It is a figure which shows the measured value of the power consumption when a disk state is set to a STOP state. It is a figure which shows the actual value of the time concerning access to a disk. And FIG. 16 is a block diagram illustrating a configuration example of a personal computer.

Explanation of symbols

  1 recording / reproducing device, 2 disc, 11 main block, 12 camera block, 21 main control unit, 28 recording / reproducing unit

Claims (6)

In a photographing apparatus using a disc as a recording medium, which is equipped with an autofocus function in which focusing is performed by half-pressing the shutter button and photographing is performed by pressing the shutter button halfway down.
Detecting means for detecting that the shutter button is half-pressed;
Until the detection means detects that the shutter button is half-pressed, the state of the disc rotates at a lower rotational speed than the rotational speed when recording image data obtained by shooting, or And a control means for controlling the rotation to be in a stopped state. The control means sets the state of the disc to a state of rotating at the number of rotations when recording image data obtained by photographing, and then detects a predetermined time without detecting that the shutter button is half-pressed. When the time has elapsed, the state of the disc is controlled so as to be in a state of rotating at a rotational speed lower than the rotational speed at the time of recording image data obtained by photographing or a state in which the rotation is stopped. The photographing apparatus according to claim 1. The control means controls the state of the disk by setting the number of rotations when the image data obtained by the previous photographing is finished as the number of rotations lower than the number of rotations when recording the image data. The photographing apparatus according to claim 1. The control unit further records data on the disc so that focus control on the disc is not performed until the detection unit detects that the shutter button is half-pressed. The imaging apparatus according to claim 1, wherein the head is controlled. In the photographing method of the photographing apparatus using a disc as a recording medium, the autofocus function is performed in which the focus is adjusted by half-pressing the shutter button and the photographing is performed by pressing the shutter button halfway.
A detection step for detecting that the shutter button is half-pressed;
A state in which the state of the disc is rotated at a rotational speed lower than the rotational speed when recording image data obtained by photographing until it is detected that the shutter button is half-pressed by the processing of the detection step. Or a control step of controlling the rotation to be in a stopped state. Focusing is achieved by half-pressing the shutter button, and causing the computer to execute photographing processing in a photographing device using a disc as a recording medium, which is equipped with an auto-focus function that performs photographing by half-pressing the shutter button. A program,
A detection step for detecting that the shutter button is half-pressed;
A state in which the state of the disc rotates at a lower rotational speed than the rotational speed at which the image data obtained by photographing is recorded until it is detected that the shutter button is half-pressed by the processing in the detection step. Or a control step for controlling the rotation to be in a stopped state.

Images