JP4577388B2 - Recording or playback device - Google Patents

Description

The present invention relates to a recording / reproducing apparatus for a recording medium , and more particularly to a technique for shortening a start-up time and preventing a malfunction during a transition from a standby state to an operating state by a preliminary operation when the recording medium is loaded in the standby state of the apparatus. It is.

As a conventional technique, a configuration of an apparatus for recording a still image on an optical disk apparatus driven by a battery is disclosed. (For example, see Patent Document 1.)
In this apparatus, when the medium is replaced in the standby state, the entire apparatus is automatically turned on, the free space of the medium is recognized from the management information of the image information recorded on the medium, and the free space is stored in the nonvolatile memory. And the entire apparatus is shifted to the standby state again. After that, when the user instructs to turn on the entire apparatus for the purpose of imaging, it immediately determines whether the captured image can be recorded on the medium from the free space of the medium stored in the non-volatile memory and uses it. Means for presenting a display prompting a person whether or not imaging is possible at high speed is disclosed.

  Further, when replacing the medium in the standby state, the optimum value of the laser power when recording on the medium is automatically determined during the period when the entire apparatus is turned on, and the optimum value is also stored in the nonvolatile memory, When the user later gives a power-on instruction for the entire apparatus for the purpose of imaging, the process for obtaining the optimum value of the recording laser power is simplified, and the process from the power-on to the recording operation of the imaging signal is shortened. Means are disclosed.

JP 2002-93023 A

  In the above conventional technique, no particular consideration is given to a disk device having a plurality of types of media. Therefore, when trying to use a disk device that supports multiple types of media, the processing time for determining the disk type and the processing time for determining the optimum servo control value for multiple types of media with different reflectivities There is a problem that the recording of the imaging signal is not started promptly.

  In addition, in the above-described conventional technology, when there is no free space as a result of checking the free space in the standby state, or when the optimum value of the recording laser power cannot be determined successfully due to dirt or scratches on the medium, the standby state In the case where there is some trouble in the above processing due to the temporary energization of the entire device, no particular consideration has been given to the notification to the user at that time. For this reason, there is a problem that the user knows the trouble when the power is turned on for the purpose of imaging, and may miss the imaging opportunity.

  Further, in the above-described conventional technology, no particular consideration is given to an apparatus that reserves and records a moving image. Therefore, when making a reservation from the remote controller in the standby state, it is necessary to determine the type of the loaded disk, servo control value, optimum value of the recording laser power, etc. from a very short time before the reservation time. There is a problem that if any trouble occurs in the operation, it cannot be dealt with at all.

  In order to solve the above problems, the present invention has taken the following measures. First, when a medium is inserted / removed or replaced in the standby state (hereinafter, “removal / replacement” is referred to as “replacement”), energization of the entire apparatus is started, and the medium discrimination operation and servo based on the physical characteristics of the disk are started. A learning process for determining an optimum value of the control value is performed. When the servo operation can be optimally performed, information on the medium type recorded on the medium is read and a logical medium type is determined to determine the medium type. Further, trial writing learning for obtaining the optimum value of the recording laser power is performed. When the above first startup process is completed without any trouble, information (medium type, optimum value in servo control, optimum value of recording laser power) obtained by these processes is stored in the nonvolatile memory. After that, unless there is an instruction to turn on the power for the purpose of video recording or playback of recorded video during the period when these processes are being carried out, energization other than the block that automatically receives the user's instructions Is shut off and the machine enters a standby state.

  Thereafter, when the user gives a power-on instruction for recording or reproduction, the medium discriminating process based on the physical disk characteristics and the learning process of the servo control value and the optimum value of the recording laser power are not executed. A second start-up process for reading information from the non-volatile memory and immediately executing servo control and recording power setting with an optimum value for a specific disk type to bring the disk medium into a recordable / reproducible state is executed.

  If the user gives a power-on instruction for recording and reproduction during execution of the first activation process, the recording / reproduction is possible without shifting to the standby state after the first activation process. To wait for a transfer request for recording / playback information.

  Next, in order to reduce the possibility of losing an imaging opportunity based on a disk trouble when the user turns on the power for the purpose of imaging, a display means is provided, and a trouble occurs in the first startup process. In such a case, an unrecordable display is clearly indicated to the user at that time.

  In addition, when the reservation is entered for the reservation system in the standby state, the first activation process is performed, and if trouble occurs in the first activation process, this is clearly indicated to the user and the medium is exchanged. Prompt.

As described above, according to the present invention, it is possible to shorten the start-up time when shifting from the standby state to the operation state, and to reduce malfunctions in recording or reproduction .

  Embodiments of the present invention will be described below with reference to FIGS. In the present embodiment, a configuration for recording and reproducing a video signal to and from an optical disc apparatus and its operation are shown. First, the configuration and the operation of this block will be described with reference to FIG.

  Reference numeral 10 denotes a camera block, which is a block that performs imaging, display of an imaging signal and a reproduction signal, compression encoding of the imaging signal, and decoding / decompression of the reproduction compression signal, and has the following configuration in detail.

  An imaging signal focused on the imaging sensor 2 via the lens 1 is converted into a video signal by the video signal processing circuit 3. The video signal is displayed on an LCD (Liquid Crystal Display) 4 and input to the compression / decompression circuit 5. The video signal compression-encoded by the compression / decompression circuit 5 is stored in the buffer memory 6 and transferred to the drive block 44 when it reaches an appropriate storage amount.

  On the other hand, during reproduction, the compressed video signal transferred from the drive block is stored in the buffer memory 6 and is sequentially input to the compression / decompression circuit 5 and the video signal processing circuit 3 to be decompressed and restored as a video signal. The restored video signal is displayed on the LCD 4 and is output to a connection terminal for an external display device. Switching between compression at the time of recording and expansion at the time of reproduction is appropriately controlled by the compression / decompression control circuit 7, and recording / reproduction signal transfer to and from the drive block 44 and its command are performed by the drive command control unit 8.

  Next, the configuration of the disk drive block 44 will be described. The drive interface circuit 28 receives a command from the drive command control unit 8 and transmits / receives the recorded compressed video information and the reproduced compressed information to / from the buffer memory 6. The recorded compressed video information is temporarily stored in the memory buffer 29, transferred to the modulation circuit 30 for each size convenient for the disk medium, and modulated by a modulation method convenient for optical recording. The modulated signal is transferred to the laser diode driver circuit 31, and recording is performed by causing the laser diode 32 to emit light at an optimum recording power.

  During reproduction, the modulated signal collected on the photoelectric conversion circuit 36 via the lens driven by the actuator 34 is demodulated by the modulation / demodulation circuit 30 and also input to the servo control circuit 37. The servo control circuit performs appropriate processing on error signals for focus control, tracking control of the actuator 34 and rotation control of the spindle control motor 40 obtained by the photoelectric conversion circuit together with the modulated signal, and the actuator 34, spindle motor 40, slider Each motor (not shown) is controlled.

  A command given from the camera block 10 through the interface circuit 28 is interpreted by the drive controller 38, and appropriate instructions are given to the servo control circuit 37 and the modulation / demodulation circuit 30, respectively, and a recording / reproducing operation to an appropriate position on the disk is performed. To control.

  Next, the system control block 16 will be described. The user command detection circuit 15 receives user instructions from various buttons (Eject 17, PB 18, REC 19, and Power ON / OFF 20 in this embodiment, but there may be more buttons) attached to the apparatus. In accordance with the received instruction, the power supply circuit block 27 is controlled, and recording / reproduction setting control of the imaging lens control unit 11 for the imaging signal and the video signal processing circuit 3 is performed. In addition, a timer control circuit 14 is provided to record the recording time, date and time together with the recording signal.

  Next, the power supply block 27 will be described. When the apparatus is in a standby state, the output of the backup battery 22 is selected via the switch circuit 24, stabilized by the regulator circuit 25, and supplied to the system controller 16. Thereby, even if it is a standby state, it becomes the structure which can detect a user's command at any time. In the standby state, the imaging lens control unit 11 and the video signal processing control unit 12 do not need to be operated. On the other hand, in the operating state, the regulator circuit 23 is operated under the control of the system controller 16, and power from the main battery 21 is supplied to the entire apparatus via the switch 24 and the switch 26.

  Next, how the above configuration operates according to an instruction from the user will be described with reference to FIGS. FIG. 2 is a processing flow describing the standby operation of the system controller 16. The system controller 16 cannot operate in a non-powered state where neither the main battery 21 nor the backup battery 22 exists. When one of them is loaded, the regulator circuit 25 detects energization and issues a reset signal to the system controller 16. As a result, the system controller 16 performs an appropriate initialization process S1 for performing the controller function, and transitions to an infinite loop S2 that waits for a power-on wait from the user.

  Since the battery is normally used with the backup battery loaded, this reset operation hardly occurs except when the backup battery is replaced. That is, in the standby state, the infinite loop of S2 in FIG. 2 is usually executed.

  In this state, a power-on request from the user by the button 20 or the button 17 (power-on for recording / reproduction or power-on for taking out the disc) at regular intervals (S3) by interrupt control from the timer circuit 14 Then, the detection of the closed state from the cover open state is awaited by the open / close detection switch 42 of the cover 41 loaded with the disk (S4). When there is any user instruction, either the power-on process (S5) or the medium replacement process (S6) in the standby state is executed.

  First, the processing when a power-on request is made will be described with reference to FIG. When the system controller 16 accepts the user's power-on command, the system controller 16 puts the regulator circuit 23 into an operating state and controls the switch 26 to start energizing the camera block 10 and the drive block 44 (S7). Here, the last drive state of the previous operation state is read from the backed-up memory 13 (S8). If the purpose of turning on the power is other than eject, if the last state of energization to the drive block 44 is no disk or the disk is abnormal, the video signal processing circuit 3 superimposes character information to that effect on the LCD 4. (S9). Note that the means for notifying the user is not necessarily an LCD, and may be a warning lamp display using an LED or a sound notification using a buzzer (both not shown).

  If a disk is loaded other than the eject request and there is no disk abnormality at the time of previous energization, preparation is made to issue to the drive block 44 a fast start request that omits medium discrimination and the like (S11).

  Next, a transition is made to a loop (S12) that waits for another command from the user until a power-off request is made by the user. If the previous fast startup request can be issued, the fast startup is issued to the drive. After making a high-speed start request to the drive, it is possible to shift to the drive recordable state within the storage time in the recording buffer memory 6, so that the user is allowed to start recording on the LCD 4 (not shown). Thereafter, it waits for a user instruction, and issues a request based on each user instruction to the drive.

  If the previous drive state is no disk or an abnormal state in S9, only the eject request (S16) or the power-off request (S17) is accepted in this loop (S12).

  When each operation desired by the user (recording (S18) or reproduction (S19)) is completed and the user instructs a power-off request by the switch 20, the system controller 16 executes processing before power-off for the drive. A request to issue is issued (S17). When the pre-power-off process of the drive is completed, the system controller 16 stores it in the backed-up memory 13 if there is no abnormality in the processing result of S17, controls the power circuit block 27, and shifts to the standby state (S22).

  The above is a series of flows from the power-on request to the shutdown request by the user. Here, when the apparatus state is in the standby state, when the system controller 16 shifts to the operation state by the eject request, the system controller 16 issues an eject request to the drive, and the cover release drive mechanism 43 shifts the cover 41 to the open state. After that, even if there is no power-off request from the user, the request of S17 is issued to the drive, and in the processing of S21, the fact that the drive is in a disk-free state is stored, and a transition is made to a standby state (processing flow not shown). This is because, since the original state is the standby state, the imaging unit and the like are not used, so that it is clear that it is not particularly necessary to keep the power supply energized. Therefore, since it is irrational in terms of power to continue energizing the power supply in the cover open state where it is unclear how long it will continue depending on the user's intention, the power supply is cut off.

  On the other hand, when an eject request is made when the original apparatus state is the operating state, the system controller 16 continues to operate even if the eject request is made to the drive and the cover 41 is opened. This is based on the idea that the user should monitor the captured video signal on the LCD or an external display device, so that the power supply should not be cut off. The entire setup request to the drive activated by the lid open / close detection described in S14 of FIG. 3 is a process executed when the eject request is accepted in this operation state and then the lid is closed in the operation state. It is.

  In the standby state, there is an eject request from the user, and after the ejection process, the system controller 16 automatically switches to the standby state. Then, the system controller 16 covers the cover by the user loading a disk with the lid open / close detection switch 42 (FIG. 1). It is recognized that 41 is closed (S4 in FIG. 2). As a result, the system controller 16 executes the disk replacement process in the standby state (S6 in FIG. 2).

  FIG. 4 shows the details of the disk replacement process in the standby state. First, the system controller 16 controls the regulator circuit 23 and the switch 26, and supplies the power of the main battery 21 to the camera block 10 and the drive block 44 (S23). The power of the system controller 16 is also supplied from the main battery via the switch 24 with the excitation of the regulator circuit 23.

  Here, the transition of the cover 41 from the open state to the closed state means that either a new disk is loaded or the cover 41 is simply closed without loading a disk. Therefore, the system controller 16 requests the drive block 44 to shift to a state in which recording and reproduction can be performed on the loaded disk, such as disc presence / absence / discrimination, servo control, and learning of the optimum value of the recording laser power. (Hereinafter referred to as setup) is issued (S24). Then, it waits for the result of the setup process returned via the drive interface 28 (ATAPI controller in FIG. 4) (S25). If the disk is not loaded, or if the setup result is abnormal and loaded. If the recorded disc cannot be transferred to a recordable / reproducible state, a message to that effect is displayed on the LCD 4 for a predetermined time (S26-28).

  After that, the drive is notified of the transition to the standby state, and a response is awaited (S29). When the drive responds that the standby state transition preparation is complete, the system controller 16 stores the drive setup processing result in the backed-up memory 14 (S30), and supplies power from the main battery to the camera block 10 and the drive block 44. The switch 24 shuts off itself and shifts to the standby state operation by the backup battery 22 by the switch 24 itself.

  The above is the operation of the system control block 16. Up to now, the system controller 16 has been described as directly instructing the drive block 44, but the drive controller 44 is instructed via the drive control unit 8 and a response from the drive block 44 is received. Or

  In the case of operations such as recording and reproduction, this not only issues a command to the drive block 44 but also issues a command to the drive block 44 in conjunction with the video signal compression / decompression circuit 5 and the buffer memory 6. This is necessary. In the present embodiment, the compression / decompression control circuit 7 and the drive command control unit 8 are combined into a system controller 9. Of course, the system controller 9 may be configured using the same microcomputer or the like as the system controller 16, but in the present embodiment, the system controller 9 is configured by another microcontroller so that the power system can be configured independently. . FIG. 5 shows a processing flow of the system controller 9.

  Since the system controller 9 is not energized in the standby state, the process starts from the reset state every time energization is started by the system controller 16. The system controller 9 first performs initialization processing necessary as a controller (S32), then waits for a command from the system controller (S34), and repeats the execution of each processing based on the command (S35) (S33) To run. When receiving the entire setup request as a command from the system controller 16, the system controller 9 commands the entire setup request to the drive block 44 (S36). As a result, the drive block 44 shifts to a recordable / reproducible state and returns the result to the system controller 9. Upon receiving this result, the system controller 9 returns to the system controller 16 that recording or reproduction is possible. In response to this, the system controller 16 displays on the LCD 4 that the user can record and reproduce.

  On the other hand, when a high speed setup request is received as a command from the system controller 16, the system controller 9 requests the high speed setup from the drive block 44 (S37). Here, the drive block 44 is the operation result of all setup processes at the time of medium replacement in the past standby state, or the presence / absence, type, servo control and recording laser power of the medium obtained as the operation result in the past operation state. If it is determined that the optimum value is available at the time when the command is received and it is determined that the recording / playback state is to be entered, a response is sent to the system controller 9 even if the high-speed setup process is not completed. The system controller 9 receives this and returns a message to that effect to the system controller 16. In response to this, the system controller 16 displays that fact on the LCD 4. This display works effectively for the user especially during recording. That is, in the case of a video camera, since the user can start recording without waiting for the drive setup, the possibility of missing an imaging opportunity is reduced.

  In this case, it is necessary to prepare a buffer memory 6 having a sufficient capacity for the high-speed setup time of the drive. However, in this way, if a buffer memory capacity suitable for the entire setup process is provided, it is possible to provide the start of video recording as seen from the user before the setup process is completed not only in the high-speed setup but also in the entire setup. Conceivable. However, if the buffer capacity is too large, the power supply cannot be effectively shut off until all the video data recorded in the buffer is stored on the disk. That is, the power supply cannot be shut off for a time until all the data accumulated in the buffer is stored in the time required for the entire setup process. Therefore, the size of the buffer capacity needs to be a capacity that is commensurate with the user's feeling of use.

  Therefore, in the present embodiment, permission to start recording in the buffer 6 as described above is limited to the case of high-speed setup processing, and all setup processing is performed in advance when the medium is replaced in the standby state, so that the user truly captures the image. When the power source is energized for the purpose, the high-speed setup process is used to make a transition to a recordable / reproducible state as quickly as possible.

  Further, the system controller 16 is configured to be able to grasp the medium exchange in the standby state of the drive block 44 in the standby state and the operation result in the past operation state, but in this embodiment, the system controller 16 does not make a determination. 16 is used as a method of grasping as a response result from the drive of the high-speed setup request. This is because the past operation result may not be used as it is due to the difference in environment when the past operation result typified by temperature is obtained. Therefore, the system controller 16 only knows whether or not it is in a state where high-speed setup can be requested, and when a high-speed setup request is made, recording starts for the user only when the drive side accepts it. It is configured to display the fact that it is possible.

  In the following, the user can instruct the start of recording when the drive is ready for recording by the full setup or the high-speed setup process, or when the drive can be reliably transferred within the accumulation time of the buffer memory 6.

  In response to this instruction, when the system controller 16 requests the system controller 9 to record, the system controller 9 controls the video signal compression / encoding circuit 5 to perform processing for starting encoding and accumulation in the buffer memory 6. If the drive block 44 has reached the recordable state, control is performed to sequentially transfer the recording data from the memory buffer 6 using a transfer protocol convenient for the drive block (S40).

  When there is a reproduction request from the user, the medium data is read out from the drive block 44 and transferred to the buffer memory 6 and the reproduction data sequentially transferred is input to the compression / decompression circuit 5. Then, a process for restoring the video signal is started.

  Thereafter, when the user performs a desired operation and makes a power-off request, the system controller 9 having received the request first requests the drive block to stop (S42), and then the next time the power is turned on, The drive block 44 is requested to perform processing necessary for power-off such as storing information necessary for setup (S39). When receiving the completion report of the processing of S39 from the drive block 44, the system controller 9 notifies the system controller 16 of it.

  The operation of the system controller 9 has been described above with the outline of the operation of the drive block 44. Details of the operation of the drive block 44 controlled by the drive controller 38 will be described with reference to FIGS.

  In the standby state, the drive block 44 is not energized. Therefore, every time energization of the drive block 44 is started by the system controller 16, the drive controller 38 starts processing from the reset state. FIG. 6 shows a processing flow that is first started from the reset state.

  The drive controller 38 performs initialization processing (S44) required as a controller, waits for a command from the system controller 9 via the drive interface circuit 28 (S46), and executes processing according to the command (S48 to 53). Then, an infinite loop (S45) that repeats a series of processes such as reporting the processing results to the system controller 9 (S55) is executed.

  The command classification basically corresponds to the command factor of the system controller 9 on a one-to-one basis. That is, if there is an all setup request from the system controller 9, the entire setup process is executed (S48), and if there is a high speed setup request, the high speed setup process is executed (S49). If there is an eject request, the cover release drive mechanism 43 is operated to release the cover 41 (S50), and if there is a request for preparatory processing before power-off, drive stop processing (S54) and preparatory processing (S51) are performed. Run in order. When there is a request for data recording or reproduction, the 28 to 30 signal control systems, 31, 32, and 36 laser emission systems and light reception systems, and 34, 37, and 40 servo control systems described in the configuration of FIG. Data recording (S52) or reproduction (S53) is executed under appropriate control.

  Next, FIG. 7 is a specific processing flow of the entire setup (S48). The contents are as follows. First, after the cover is released by the cover release mechanism 43 (S56), the presence / absence of the medium and the type are roughly determined (S57).

  As a specific method for determining the presence / absence of the medium, for example, there is a method by means of servo control in which the laser 34 emits light and the photoelectric conversion circuit 36 determines the presence / absence of reflected light. Further, when the medium is stored in some case, it can also be detected by mechanically pressing a switch after the case is loaded.

  Further, when a medium exists, as a method for determining the type of the medium, for example, a reflected light level that differs for each type of medium, or a focus error signal or tracking of the actuator mechanism 34 obtained by processing the reflected light is used. The error signal can be classified by a combination of these amplitudes. Here, the meaning described above as rough is not easy to classify all the types of disk media with these combinations alone, and finally the information on the media types recorded on the media, etc. Complete classification using. At this stage, it is only necessary to classify to a level at which the servo control method and the signal reproduction method necessary for reading the medium type information can be determined.

  Next, when there is a medium and rough classification can be performed (S58), the rotation of the spindle motor 40 and the control of the actuator mechanism 34 are executed by the servo control circuit 37 (S59). Here, the focus control signal and the tracking error signal differ greatly depending on the type of medium. Further, even if the same type of medium is used, there is variation for each medium. Therefore, the gain of the servo control signal is adjusted for each medium type and each medium (S60, S61). For example, the gain information is stored in a multiplier register (not shown) or the like in the servo control circuit and is realized by changing the control characteristic to an optimum value. The servo control gain adjustment is performed in accordance with the medium discrimination. In addition, since the spring force of the actuator mechanism 34 changes depending on the temperature, the temperature change is detected by a temperature sensor (not shown) or the like to be relearned. In some cases.

  As described above, when the servo control is properly performed (S62), the type information recorded on the medium is read and the medium type is completely determined (S64). If the medium type is a recordable medium from the medium information (S65), a test writing process is executed to determine the laser emission power at the time of recording for each medium (S66). As a specific method of this processing, for example, recording is performed while gradually changing the recording laser power, and the portion is reproduced, and as a result, the power when the reproduction signal having the best reproduction quality is obtained is used. it can. The adjustment value of the recording laser power is also stored in, for example, a multiplier register (not shown) in the laser diode driver circuit 31 to vary the laser power to an optimum value.

  The trial writing control is performed using a specific area provided on the disk medium. Here, in the case of a rewritable medium, this trial writing area can be repeatedly used, but in the case of a medium that can be additionally written and cannot be rewritten, the trial writing area is limited. Therefore, in the present embodiment, the configuration is performed during the entire setup processing period, but there is also a configuration in which trial writing is performed at that point after the user actually requests a recording. Further, as in the case of the actuator mechanism 34, the laser diode 32 is easily influenced by a temperature change, so that it is relearned as necessary.

  As described above, if the test writing is normally completed (S65), the drive block 44 reports information such as the presence / absence of the medium, the type, and the normal completion of all the setup processes to the system controllers 9 and 16 (FIG. 6 S43). If only the trial writing control is unsuccessful, it is reported to the system controllers 9 and 16 as information that reproduction is possible.

  Next, the configuration of the preparatory process (S51) before power-off will be described with reference to FIG. First, if the servo control system is in operation, each operation is stopped in the order of the actuator control mechanism 34, laser extinction, and spindle motor stop (S69). Next, the presence / absence of the medium and the type of medium are stored in the nonvolatile memory 39, and the servo control circuit 37, the final servo control gain adjustment value stored in the register in the laser diode driver 31, and the recording laser The power adjustment value is read from each circuit and stored in the nonvolatile memory 39 (S70). Thus, the preparation for power shutdown is completed.

  In the present embodiment, the adjustment values for the servo control and the trial writing control are stored in the nonvolatile memory of the drive block. By reporting these information to the system controller 16 through the system controller 9 together with the presence / absence and type of the medium and storing them in the backed-up memory 13, the nonvolatile memory on the drive block 44 side may be unnecessary. In this way, circuit cost can be saved. However, since the information that only requires the drive block is kept only in the drive block, when the drive block is applied to other products, it is possible to avoid complication of processing on the host system side. In the configuration, information necessary for high-speed setup is intentionally distributed and stored.

  Next, the configuration during high-speed setup will be described with reference to FIG. First, all the information stored in the non-volatile memory is read (S71), the presence / absence type of the medium, the final operation normality including the test writing control can be confirmed, and the servo control and test writing can be performed. When the control adjustment value can be used in consideration of a temperature change or the like (S72), the fact is reported to the system controller 16 via the system controller 9 (S73). Upon receiving this, the system controller 16 immediately displays to the user that the recording can be started on the LCD 4 or the like. At this stage, the user can start recording using the buffer memory 6. If any information is malfunctioning and cannot be started at high speed, the drive switches to all setup processing and executes processing (S48).

  If there is a medium and adjustment values relating to servo control and trial writing control can function effectively, setup is completed by merely operating servo control (S75). As a result, even if the user starts recording using the buffer memory 6, the drive block 44 can be started at high speed and surely, and substantial recording on the medium is started before the buffer memory 6 is over capacity. it can. In other words, according to the present embodiment, adjustment values for medium discrimination, servo control, and trial writing control are obtained in advance at the time of medium exchange during standby, so that the user cannot actually record at the stage of recording. High-speed recording can be started without waking up.

  In this embodiment, the medium determination, the servo control adjustment value, and the test writing control adjustment value are all omitted, and the high-speed setup is performed. However, the servo control optimum value is determined according to the capacity of the memory buffer 6. It goes without saying that the relearning of the optimum value of the test writing control can be executed both or selectively or in response to environmental changes such as temperature.

  Next, the configuration of the second embodiment of the present invention will be described with reference to FIG. However, since there are many configurations that are almost the same as those of the first embodiment, only the different portions will be described. Whereas the first embodiment is a video camera device that records a picked-up video signal on an optical disc medium, the present embodiment is a video deck device that records a received signal on an optical disc medium.

  A video signal is obtained by a tuner circuit 46 that selectively demodulates a desired channel from radio waves received by the antenna 45. The video signal is recorded on the optical disk 35 using the circuits and mechanisms after the video signal processing circuit 47, or the video data recorded on the optical disk 35 is read out to obtain a reproduced video signal in the first embodiment. It is the same. The display of the received video signal and the display of the reproduced video signal are displayed on the monitor device 48 outside the device. In the first embodiment, the portion described as the camera block 10 corresponds to the video signal processing block 50.

  Next, portions of the system controller 16 that are different from the first embodiment will be described. A tuner control circuit 51 selects a reception channel in response to a request from the user. A remote control transmission circuit 52 and a reception circuit 53 are used by the user to make a reservation for the reception channel and recording start time.

  Next, parts of the drive block 44 that are different from the first embodiment will be described. In the first embodiment, the disc is manually loaded and covered with the cover 41. On the other hand, in this embodiment, the disk is placed on the tray 56, and the tray 56 is driven by the tray driving mechanism 57 to be loaded and unloaded, and the disk is loaded and unloaded. A switch sensor 58 detects whether the tray is in a loaded state or an unloaded state. Further, in the first embodiment, the switch 17 provided for obtaining the user's eject command operates as a button for giving an eject command in the tray loading state according to the state of the sensor switch 58. If it is in the tray unload state, it functions as a button for giving a load command.

  Finally, the power supply block 27 will be described. The AC power obtained from the commercial power supply via the cord 55 is converted into a DC signal by the rectifying / smoothing circuit 54 and stabilized by the regulator circuit 23. Further, the system controller 16 is always supplied with power via the regulator circuit 25. On the other hand, the recording / reproduction signal processing block 50 and the drive block 44 are configured to start operation when the switch 26 is closed by the transition control from the system controller 16 to the operation state.

  Next, how the present invention is applied in the configuration of the second embodiment will be described with reference to the processing flows of FIGS. In addition, the same step number is attached | subjected to the processing step equivalent to the processing content equivalent to 1st Embodiment.

  FIG. 11 shows the main process of the system controller 16. As in the first embodiment, since the system controller 16 always operates even in the standby state, the processing is not normally started from the reset state. When the cord 55 is not connected to a commercial power supply, the system controller 16 starts processing from reset, performs necessary initialization processing as a controller (S1), and then performs an infinite loop (S2 ).

  In the infinite loop (S2), the clock function is realized by counting the time by the interruption process (S80) at regular intervals generated by the timer circuit 13 (S82). The interrupt signal is also generated by the remote control receiving circuit 53.

  Based on the instruction from the button switch of the user or the remote control transmission data by the timer interrupt or the remote control reception interrupt, the presence / absence of the user's command is detected, and if there is a command, processing corresponding to each command is executed (S83). ).

  Here, as a command not in the first embodiment, there are a process for setting a time reservation recording by the remote controller (S85) and a recording start process (S86) due to the coincidence of the reserved time and the current time. . Hereinafter, each process including these two processes will be described.

  12 shows not only a power-on request for recording / reproduction of a video signal but also a system controller 16 when receiving a power-on command for shifting from a standby state to an operating state due to all factors such as loading and ejecting. It is a processing flow. This process is almost the same as the process of FIG. 3 in the first embodiment. The difference is that in the first embodiment, the entire setup process is executed by detecting from the lid open state to the lid closed state, whereas in this embodiment all setup processes are performed when there is a load request. The point is calling the request.

  As in the first embodiment, also in this embodiment, when there is an eject request in the standby state, the state is automatically changed to the operation state after ejection, and there is an eject request in the operation state. In the case of failure, the operation state continues even after ejection. This is because the user may be watching the received video signal on the monitor device in the operating state. On the other hand, since there is no need to worry about the user's viewing in the standby state, the state shifts to the standby state until there is a load request for the purpose of power saving after ejection.

  The processing flow of the system controller 16 at this time is shown in FIGS. First, referring to FIG. 14, the system controller 16 starts energizing the received signal recording / reproducing block 50 and the drive block 44 (S87). Then, an eject request is made to the drive block 44 (S88), and the completion is waited (S89). In response to this, the drive controller 44 operates the tray control mechanism 57 described above to operate the tray to the unloaded position, and returns the result to the system controller 16 through the system controller 9. In response to this, the system controller 16 cuts off the energization to the received recording / reproducing signal processing block 50 and the drive block 44 (S90).

  Next, the processing at the time of a load request in the standby state will be described with reference to FIG. The system controller 16 starts energizing the received signal recording / reproducing block 50 and the drive block 44 (S23), requests all setup requests via the system controller 9 (S24), and waits for the completion (S25). If there is no medium or the entire setup process cannot be completed normally due to some trouble, a message to that effect is displayed on a display circuit (not shown) provided on the front panel (S27, S28). And the request | requirement which performs the preparation process for power supply cutoff with respect to the drive block 44 is performed (S30). As a result, on the drive block side, the optimum values of the disk type, servo control, and test writing control found by the entire setup request are stored in the nonvolatile memory, and the preparation process is executed for the next fast startup request. In addition, the system controller 16 itself stores information on all the setup processing results in order to grasp whether or not it is possible to request high-speed startup at the next power-on (S30). After the completion, the system controller 16 shifts the power supply to the standby state (S31).

  Next, the operation of the system controller 16 when there is a reservation command from the remote controller will be described with reference to FIG. 15 (S85). First, the reserved time is stored in the memory 13 (S91), and the power supply is switched to the operating state (S23). Next, an entire setup request is made to the drive (S24), and a completion report is awaited (S25). Thereafter, processing similar to the processing in FIG. 13 is performed.

  Next, FIG. 16 shows timer reservation processing in another standby state. In this process, the entire setup process is not performed, and the entire setup process is performed when the medium can be operated reliably according to the last state of the previous operation state or the state based on the entire setup process result at the time of medium replacement in the standby state. There is no way.

  These two processes are properly used as follows. That is, if the previous operation state or the setup result at the time of medium replacement is unsatisfactory, the entire setup is tried again. In addition, when a very long time (for example, one week) has elapsed since the last time the loaded medium was used or when the entire setup was last performed, the entire setup process is performed again. . In other cases, the setup process is omitted based on past information.

  Next, FIG. 17 shows processing at a stage over the timer reservation time. Strictly speaking, this processing starts to operate slightly before the recording start reservation time. First, the electric power is shifted to the operating state (S93), and the previous operating state of the drive is read. Basically, the user confirms the medium presence / absence trouble at the time of reservation, so there is no particular problem and the high-speed setup process is executed and the lower recording is started. When recording is completed, stop processing is performed, the drive is requested to perform preparatory processing before power is shut off, and the power is turned off.

  Although the system controller 16 in the second embodiment has been described above, the operation of the drive controller 44 is the same as in the first embodiment except for tray control.

According to the present embodiment, the medium type of the disk loaded in advance at the time of reservation, servo control, and optimum values for test writing control are acquired in advance again. As a result, the risk of disc trouble at the recording time can be reduced, and the user's feeling of use can be further improved.
In addition, since the start-up time at the original imaging or recording opportunity can be shortened, the effect of improving the user's feeling of use, and sufficient time margin to reliably determine the optimum values such as various servo controls and recording laser power Therefore, there is an effect that it is possible to avoid unreasonable power consumption such as starting energization of the entire apparatus from before the reservation time more than necessary to secure the power.

In the present invention, it is a block diagram for explaining the configuration of the first embodiment. FIG. 5 is a PAD (Program Algorithm Diagram) diagram for explaining a user instruction detection process flow in a standby state of the system controller 16 in the first embodiment. FIG. 6 is a PAD diagram for explaining a processing flow of the system controller 16 when a power-on instruction is issued from a user in the first embodiment. In the first embodiment, it is a PAD for explaining the processing flow of the system controller 16 at the time of medium replacement in the standby state. FIG. 6 is a PAD diagram for explaining a processing flow of the system controller 9 in the first embodiment. FIG. 7 is a PAD diagram for explaining an instruction detection process flow from the system controller 9 of the drive controller 38 in the first embodiment. FIG. 6 is a PAD diagram for explaining a first transition processing flow to a recording / reproducing ready state in the drive controller in the first embodiment. FIG. 6 is a PDA diagram for explaining a processing flow of preparation for shifting to a standby state in the drive controller in the first embodiment. FIG. 6 is a PDA diagram for explaining a second transition processing flow to a recordable / reproducible state in the drive controller in the first embodiment. In this invention, it is a block diagram for demonstrating the structure of 2nd Embodiment. It is a PDA figure for demonstrating the detection process flow of the user instruction | indication in the system controller of 2nd Embodiment. FIG. 10 is a PDA diagram for explaining a transition process flow from a standby state to an operation state in the system controller of the second embodiment. FIG. 10 is a PDA diagram for explaining a processing flow at the time of medium insertion instruction in a standby state in the system controller according to the second embodiment. FIG. 10 is a PDA diagram for explaining a processing flow at the time of medium ejection instruction in a standby state in the system controller of the second embodiment. It is a PDA diagram for explaining a first processing flow at the time of reservation instruction in the standby state in the system controller of the second embodiment. It is a PDA diagram for explaining a second processing flow at the time of reservation instruction in the standby state in the system controller of the second embodiment. FIG. 11 is a PDA diagram for explaining a processing flow when reservation times coincide in a standby state in the system controller of the second embodiment.

Explanation of symbols

2 ... Imaging sensor circuit,
3 ... Video signal processing circuit,
5: Compression / decompression circuit,
6 Compressed video signal buffer memory circuit,
9 ... System controller 2,
13: Device control state storage memory,
14 ... Timer circuit,
16 ... System controller 1,
27 ... Power supply circuit,
31 ... Laser drive circuit,
32 ... Laser diode,
34 ... Lens,
35 ... optical disc,
36 ... photoelectric conversion circuit,
37 ... Drive servo control circuit,
38 ... Drive controller,
39: Drive status recording memory,
40: Disc rotation drive motor,
41. Disc cover,
42. Cover open / close detection circuit,
56 ... Disc tray,
57 ... Tray load detection switch

Claims (6)

And recording Hand stage that records a video or audio signal to a recording medium, the record or playback device you comprising at least one of the playback means to play the video or audio signals recorded on a recording medium,
Operation accepting a second command group including a standby state in which a part of the area of the device receives the first group of instructions in a state of being energized, a start instruction for instructing to record or playback start video or audio signal Power standby operation switching means for shifting each of the states,
Learning means for learning a control value when performing control for recording or reproduction on a recording medium with respect to the recording means or the reproducing means;
Storage means for storing the control value learned by the learning means ,
The recording means or the reproducing means is in a state in which after acquiring the control value, a video or audio signal can be recorded or reproduced on a recording medium,
If done the insertion of the recording medium before Symbol standby state, the operates the learning means, to store the control value learned Ri by said learning means prior Symbol storage means,
If migrating Previous Stories operating state from the previous SL standby state based on a command before Symbol in the first group of instructions, to determine whether it is possible to employ the control value stored in the storage means, may be employed when it is determined that the pre-Symbol you characterized that you transition to the operating state based on the stored said control value in the memory means records or reproducing apparatus.   The recording or reproducing apparatus according to claim 1,
  When transitioning from the standby state to the operating state based on a command in the first command group, it is determined whether or not the control value stored in the storage unit can be adopted, and when it is determined that the control value cannot be adopted A learning or recording device that learns the control value again and shifts to the operation state based on the learned control value.   The recording or reproducing apparatus according to claim 1 or 2,
  Comprising environmental information acquisition means for acquiring environmental information relating to the operating environment of the recording means;
  The storage means stores the first environmental information acquired by the environmental information acquisition means when the learning means learns the control value when storing the control value;
  When transitioning from the standby state to the operating state based on a command in the first command group, second environmental information is acquired by the environmental information acquisition unit, and the control value stored in the storage unit is stored. A recording or reproducing apparatus that determines whether or not the information can be adopted by comparing the first environmental information and the second environmental information.   The recording or reproducing apparatus according to claim 3,
  The recording / reproducing apparatus, wherein the environmental information includes temperature information.   A recording apparatus comprising recording means for recording a video or audio signal on a recording medium,
  An operating state for receiving a second command group including a standby state for receiving a first command group while a part of the device is energized and a recording start instruction for instructing to start recording a video or audio signal Power standby operation switching means for transferring each of
  Learning means for learning a control value when performing control for recording on the recording medium with respect to the recording means;
  Storage means for storing the control value learned by the learning means;
  Storage means for temporarily storing the video or audio signal to be recorded on the recording medium before recording on the recording medium,
  The recording means is in a state in which a video or audio signal can be recorded on a recording medium after obtaining the control value,
  When the recording medium is inserted and removed in the standby state, the learning unit is operated, and the control value learned by the learning unit is stored in the storage unit.
  When transitioning from the standby state to the operation state based on a command in the first command group, it is determined whether or not the control value stored in the storage unit can be employed, and when it is determined that the control value can be employed Even if it is before the recording means has entered a state where it can record video or audio signals on a recording medium based on the control value stored in the storage means. A recording apparatus for receiving a command in the second command group instructing the storage means to start storing video or audio signals to be recorded on the recording device.   An imaging apparatus comprising the recording apparatus according to claim 5,
  Imaging means for imaging a subject and outputting a video signal;
  Encoding means for encoding video or audio signals,
  The encoding means encodes a video signal output from the imaging means,
  The storage means stores the encoded video signal output from the encoding means,
  The image pickup apparatus, wherein the recording means records the encoded video signal accumulated by the accumulation means on a recording medium.

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