JP2007324949A - Information recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information recording and reproducing device capable of switching the step of the speed of fast forward reproduction, rewind reproduction, and slow reproduction to a digital video camera. <P>SOLUTION: When the information recording and reproducing device detects that FF operation is performed to switch the step of the speed of fast forward reproduction while the fast forward reproduction is being performed to information from the digital video camera, an FF1 state is acquired by a state acquisition command to the digital video camera, and commands FF2, FF3 are sent to the digital video camera successively until the acquired camera state changes to a camera state executed by a transmitted fast forward reproduction operation command. In this case, if the digital video camera has a function corresponding to the command FF3 when receiving the command FF3, a fast forward reproduction state becomes an FF3 state, thus switching the step of the speed of fast forward reproduction of the digital video camera. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is capable of connecting via a cable to a digital video camera that records imaged video information and input audio information on a magnetic tape and reproduces video / audio information recorded on the magnetic tape. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus configured to be able to record video / audio information reproduced from a camera on a recording medium and to reproduce video / audio information recorded on the recording medium. The present invention relates to processing for switching the speed level of reverse playback and slow playback.

  As is known in the art, an object or person is imaged, the captured video information and audio information obtained with a microphone are recorded on a magnetic tape, and the video information and audio information recorded on the magnetic tape are recorded. Digital video cameras having a configuration capable of reproducing video and displaying video on a display device such as a television receiver and outputting sound from a speaker or the like are widely used.

  Incidentally, there is a case where video / audio information recorded on a magnetic tape set in such a digital video camera is desired to be dubbed and recorded on a recording medium such as a hard disk or an optical disk by an information recording / reproducing apparatus. In this case, the digital input / output terminal of the digital video camera is connected to the digital input / output terminal of the information recording / reproducing apparatus via, for example, an IEEE (Institute of Electrical and Electronics Engineers) 1394 cable, and the digital video camera is set to the reproduction mode. By setting the information recording / reproducing apparatus to the recording mode, the video / audio information recorded on the magnetic tape is reproduced, and the reproduced video / audio information is sent to the information recording / reproducing apparatus. The audio / video information recorded on the magnetic tape is recorded.

In addition, the video / audio information recorded on the magnetic tape set in the digital video camera is played back to a monitor device (such as a television receiver) connected to the information recording / playback device and input to the monitor device. There is a case where it is desired to display an image on the apparatus and output sound to a speaker of the monitor apparatus. In this case, the digital input / output terminal of the digital video camera is connected to the digital input / output terminal of the information recording / reproducing apparatus via, for example, an IEEE (Institute of Electrical and Electronics Engineers) 1394 cable, and the remote controller is operated to record information. By setting the playback device to the camera operation mode and then pressing the playback key on the remote control, the playback operation is performed on the magnetic tape set in the digital video camera. Information is read out, sent to the monitor device via the information recording / reproducing device, video is displayed on the display device of the monitor device, and sound is output from the speaker of the monitor device.
JP 2005-176059 A JP 2006-67204 A

  When the video / audio information on the magnetic tape is being reproduced as described above, if the user wants to view the video information by, for example, fast-forward playback, the magnetic tape is played back by pressing the fast-forward key on the remote controller. It is possible to watch a fast-forward playback image on the display device of the monitor device. However, in this type of conventional information recording / reproducing apparatus, in order to fast-forward and replay the magnetic tape to the digital video camera, the fast-forward key on the remote control can be pressed. Since there is no speed switching command corresponding to the fast forward playback speed stage of each model of digital video camera, there is a problem that the fast forward playback speed stage cannot be switched. . Similarly, for rewind playback and slow playback, there is a problem that it is not possible to switch between the rewind playback speed stage and the slow playback speed stage.

  In the prior art of Patent Document 1, among the various commands indicating the operation as a digital video camera, such as a playback command, a fast-forward command, and a rewind command, one of the commands that can be accepted is a communication control means. When the digital video camera is supplied to the digital video camera via the video signal recording device, the digital video camera performs the operation instructed by the command, but the speed of fast forward playback / rewind playback / slow playback with respect to the digital video camera There is no disclosure of the process of switching between.

  The prior art of Patent Document 2 controls a digital video camera by transmitting and receiving a control command for operating the digital video camera from a DVD recorder via an interface and a response signal thereof. On the other hand, there is no disclosure of processing for switching the speed stages of fast forward playback, rewind playback, and slow playback.

  The present invention has been made in order to solve the above-described problems, and is an information recording / reproducing apparatus capable of switching between fast-forward playback, rewind playback, and slow playback speed stages for a digital video camera. The purpose is to provide.

  In order to achieve the above object, the invention of claim 1 records the video information picked up by the image pickup means and the sound information input by the sound input means on the magnetic tape and also records the video / audio information recorded on the magnetic tape. It can be connected to a digital video camera to be reproduced via a cable, and can be configured to record video / audio information reproduced from the digital video camera on a recording medium and to reproduce video / audio information recorded on the recording medium. In the information recording / playback apparatus, after the camera operation mode for operating the digital video camera is set, special playback is performed by a special playback operation for performing special playback indicating fast forward playback, rewind playback, or slow playback. The special playback operation has been performed to switch the stage of the special playback speed. A special operation detecting unit that knows, and when a special reproduction operation is detected by the special operation detecting unit, a state acquisition command is transmitted to the digital video camera, and a camera state acquisition unit acquires a camera state by the state acquisition command; Special reproduction operation command transmission means for transmitting a special reproduction operation command one step faster to the digital video camera for performing special reproduction one step faster than the special reproduction speed indicated by the acquired camera state, and the one step After a fast special playback operation command is transmitted to the digital video camera, a status acquisition command is transmitted to the digital video camera, and a camera status reacquisition means for acquiring the camera status again by the status acquisition command, and the camera status again The special playback speed indicated by the camera state acquired by the acquisition means is the above 1 Special reproduction state determination means for determining whether or not the special reproduction state at one step fast special reproduction speed executed by the high-speed special reproduction operation command, and the special reproduction state at one step high special reproduction speed is determined. If it is determined that the switching of the stage of the special playback speed has been completed, if it is determined that the special playback speed is not in the special playback speed of one stage faster, the special playback speed is increased one stage after waiting for a predetermined response time. When it is determined by the special reproduction state re-determination means that re-determines whether or not the reproduction speed is in the special reproduction state and the special reproduction state re-determination means, the special reproduction state at the one-step faster special reproduction speed. Recognizes that the switching of the stage of the special playback speed has been completed, but if it is determined that the special playback speed is not in the special playback state with the one stage higher special playback speed, the special playback operation command is transmitted. There is provided an information recording / reproducing apparatus comprising a system controller having processing transition means for returning to processing from the means and shifting to processing relating to special reproduction processing that is one step faster.

  In this configuration, after the camera operation mode for operating the digital video camera is set, for example, when fast-forward playback (special playback) is performed by fast-forward playback operation (special playback operation) for performing fast-forward playback. When the special operation detecting means detects that a fast forward playback operation (special playback operation) has been performed in order to switch the speed stage of fast forward playback (special playback), the camera status acquisition means returns a status to the digital video camera. An acquisition command is transmitted, and the camera state is acquired by this state acquisition command.

  Next, the special reproduction operation command transmission means is a one-step fast forward reproduction operation command for performing fast-forward reproduction (special reproduction) one step faster than the fast-forward reproduction speed (special reproduction speed) indicated by the acquired camera state. (Special playback operation command) is transmitted to the digital video camera. Then, the camera state reacquisition means transmits a state acquisition command to the digital video camera, and acquires the camera state again by this state acquisition command. The special reproduction state determination means is a one-step executed by a fast-forward reproduction operation command (special reproduction operation command) in which the fast-forward reproduction speed (special reproduction speed) indicated by the camera state acquired by the camera state re-acquisition means is one step faster. It is determined whether or not the fast forward playback speed (special playback speed) is in the fast forward playback state (special playback state).

  When it is determined that the fast-forward playback state (special playback state) of the fast forward playback speed (special playback speed) is one stage, it is recognized that the switching of the fast-forward playback speed (special playback speed) stage has been completed. If it is determined that the fast-forward playback speed (special playback speed) is not in the fast-forward playback state (special playback state), the special playback state determination unit again waits for a predetermined response time (for example, 200 ms), It is again determined whether or not the fast-forward playback state (special playback state) at one stage faster fast-forward playback speed (special playback speed).

  If the special playback state determination means determines that the fast-forward playback speed (special playback speed) is one stage faster fast-forward playback speed (special playback speed), If it is determined that the switching has been completed, but it is determined that the fast-forward playback speed (special playback speed) is not the fast-forward playback state (special playback state), the process transition means transmits the special playback operation command. Returning to the process from the means, the process proceeds to a process relating to a fast-forward reproduction process (special reproduction process) that is one step faster.

  According to this configuration, when the special playback is performed by the special playback operation for performing the special playback indicating the fast forward playback, the rewind playback, or the slow playback, the speed level of the special playback is switched. When a special playback operation is performed, each special playback operation command is sequentially transmitted to the digital video camera until the camera state executed by the transmitted special playback operation command is changed. You can switch between fast-forward playback, rewind playback, and slow playback speed stages for the video camera, and you can switch between fast-forward playback speed, rewind playback speed, or slow playback speed stage for the digital video camera. Usability for operation is improved.

  According to a second aspect of the present invention, there is provided a digital video camera and a cable for recording the video information picked up by the image pickup means and the sound information inputted by the sound input means on the magnetic tape and reproducing the video / audio information recorded on the magnetic tape. In an information recording / reproducing apparatus configured to be able to record video / audio information reproduced from the digital video camera on a recording medium and to reproduce video / audio information recorded on the recording medium A special playback operation was performed to switch the stage of the special playback speed while the special playback was being performed by a special playback operation for performing a special playback indicating a playback, a rewind playback or a slow playback. When this is detected, the camera status is acquired by the status acquisition command to the digital video camera. An information recording / reproducing apparatus comprising a system controller that sequentially transmits each special playback operation command to the digital video camera until the camera state changes to the camera state executed by the transmitted special playback operation command. provide.

  In this configuration, for example, when fast-forward playback operation is performed in order to switch the speed stage of fast-forward playback while fast-forward playback is being performed, the camera status is acquired by a status acquisition command to the digital video camera, Each fast-forward playback operation command is sequentially transmitted to the digital video camera until the acquired camera state changes to the camera state (fast-forward playback state) executed by the transmitted fast-forward playback operation command.

  According to this configuration, when the special playback is performed by the special playback operation for performing the special playback indicating the fast forward playback, the rewind playback, or the slow playback, the speed level of the special playback is switched. When a special playback operation is performed, each special playback operation command is sequentially transmitted to the digital video camera until the camera state executed by the transmitted special playback operation command is changed. You can switch between fast-forward playback, rewind playback, and slow playback speed stages for the video camera, and you can switch between fast-forward playback speed, rewind playback speed, or slow playback speed stage for the digital video camera. Usability for operation is improved.

  According to a third aspect of the present invention, in the second aspect of the present invention, after the system controller is set to the camera operation mode for operating the digital video camera, the special reproduction indicating fast forward reproduction, rewind reproduction or slow reproduction is performed. Special operation detection means for detecting that the special playback operation has been performed to switch the stage of the special playback speed during special playback by the special playback operation for performing the special playback operation, and this special operation detection When a special playback operation is detected by the means, a status acquisition command is transmitted to the digital video camera, and a camera status acquisition means for acquiring a camera status by the status acquisition command, and a special playback speed indicated by the acquired camera status A special playback operation command that is one step faster than that for performing one step faster special playback than the digital video camera. A special playback operation command transmission means for transmitting to the digital video camera, and after the one-step fast special playback operation command is transmitted to the digital video camera, a status acquisition command is transmitted to the digital video camera. The special reproduction speed of the special reproduction speed executed by the special reproduction operation command in which the special reproduction speed indicated by the camera state obtained by the camera state re-acquisition means and the special reproduction speed indicated by the camera state re-acquisition means is obtained by the one-stage high special reproduction operation command. Special reproduction state determination means for determining whether or not the state is in a state, and when it is determined that the special reproduction state at the one stage higher special reproduction speed is recognized, the switching of the special reproduction speed stage is completed, If it is determined that the special playback speed is not in the special playback speed that is one step faster, wait for a predetermined response time. The special reproduction state re-determination means for re-determining whether or not the special reproduction speed is at the special reproduction speed and the special reproduction state re-determination means determine that the special reproduction state is at the special reproduction speed that is one step faster. If it is determined that the special playback speed has not been switched, the special playback speed is returned to the processing from the special playback operation command transmission means. And a process transfer means for shifting to a process related to the special reproduction process that is one step faster.

  Therefore, the system controller can realize special operation detection processing, camera status acquisition processing, special playback operation command transmission processing, camera status again acquisition processing, special playback status determination processing, special playback status again determination processing, and processing transition processing. Thus, special playback for switching the stage of special playback speed is performed during special playback by special playback operation for special playback indicating fast forward playback, rewind playback or slow playback. When the operation is performed, each special playback operation command can be sequentially transmitted to the digital video camera until the camera state changed by the transmitted special playback operation command is changed.

  As described above, according to the present invention, after setting to the camera operation mode for operating the digital video camera, special playback is performed by special playback operation for performing special playback indicating fast forward playback, rewind playback, or slow playback. When special playback operation is detected by this special operation detection means and special operation detection means to detect that special playback operation has been performed to switch the stage of special playback speed , A state acquisition command is transmitted to the digital video camera, and camera state acquisition means for acquiring the camera state by the state acquisition command, and special playback that is one step faster than the special playback speed indicated by the acquired camera state is performed. Special reproduction operation command transmitting means for transmitting a special reproduction operation command for one stage to the digital video camera; After a one-step fast special playback operation command is transmitted to the digital video camera, a camera status re-acquisition means for transmitting a status acquisition command to the digital video camera and acquiring the camera status again by the status acquisition command; Special playback state determination for determining whether or not the special playback speed indicated by the camera state acquired by the state acquisition unit is a special playback state at a special playback speed that is one step faster executed by the one-step faster special playback operation command. And when it is determined that the special playback state at the special playback speed of one step higher is recognized, it is recognized that the switching of the stage of the special playback speed has been completed. If it is determined, after waiting for a predetermined response time, it is again determined whether or not the special reproduction state is one stage faster special reproduction speed. When the special reproduction state determining means and the special reproduction state re-determining means determine that the special reproduction state is one stage higher in the special reproduction speed, it is recognized that the switching of the special reproduction speed stage has been completed. However, if it is determined that the special playback state is not at the one stage higher special playback speed, the process returns to the process from the special playback operation command transmission means, and the process shifts to the process related to the special playback process one stage higher. A special controller for performing special playback to indicate fast-forward playback, rewind playback, or slow playback during special playback operation. When the special playback operation for switching the stage is performed, until the camera state executed by the transmitted special playback operation command is changed, The special playback operation commands can be sent to the digital video camera in sequence, thereby enabling the fast video playback, rewind playback, and slow playback speed stages to the digital video camera regardless of the model of the digital video camera. The user can switch between the fast-forward playback speed, the rewind playback speed, and the slow playback speed stage for the digital video camera.

  Further, according to the present invention, the special playback speed stage is switched during special playback by special playback operation for performing special playback indicating fast forward playback, rewind playback, or slow playback. Therefore, when it is detected that the special playback operation has been performed, the camera status is acquired by the status acquisition command to the digital video camera, and the acquired camera status is changed to the camera status executed by the transmitted special playback operation command. Until it changes, the digital video camera is equipped with a system controller that sequentially transmits each special playback operation command, so that special playback can be performed by special playback operation for performing special playback indicating fast forward playback, rewind playback, or slow playback. During playback, special playback operation is performed to switch the stage of special playback speed. Until the camera state executed by the transmitted special playback operation command is changed, each special playback operation command can be sequentially transmitted to the digital video camera, so that the digital video can be transmitted regardless of the model of the digital video camera. The camera can be switched between fast-forward playback, rewind playback, and slow playback speed stages, and the user can switch between fast-forward playback speed, rewind playback speed, or slow playback speed stage for the digital video camera. Convenience for is improved.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing the configuration of an information recording / reproducing apparatus and a digital video camera according to an embodiment of the present invention.

  In FIG. 1, a digital video camera A and an information recording / reproducing apparatus B are connected by, for example, an IEEE (Institute of Electrical and Electronics Engineers) 1394 cable L, which is a communication cable, and an image captured by the digital video camera A and an input The recorded sound can be dubbed and recorded in the information recording / reproducing apparatus B. That is, the digital input / output terminal a of the digital video camera A and the digital input / output terminal b of the information recording / reproducing apparatus B are connected by the IEEE 1394 cable L, and the video / audio data (video) recorded on the magnetic tape 9 in the digital video camera A is recorded. Audio information) can be dubbed and recorded on the recording medium 17 in the information recording / reproducing apparatus B. The recording medium 17 is a hard disk when the information recording / reproducing apparatus B is a hard disk recorder, and a DVD when the information recording / reproducing apparatus B is a DVD recorder. Therefore, the information recording / reproducing apparatus B of this embodiment may be either a hard disk recorder or a DVD recorder.

  The digital video camera A includes a photographing lens 1 for photographing an object, an image pickup device 2 such as a CCD for converting an image taken by the photographing lens 1 into an electric signal, and an output signal of the image pickup device 2 as an image in a predetermined format. A video signal processing circuit 3 for converting into a signal, a microphone 4 for inputting sound, a microphone amplifier 5 for amplifying an audio signal output from the microphone 4, and an audio signal of a predetermined format for the audio signal from the microphone amplifier 5 An audio signal processing circuit 6 for converting to a video signal and a video signal from the video signal processing circuit 3 are input to convert to digital video data, and an audio signal from the audio signal processing circuit 6 is input to convert to digital audio data. Magnetic tape recording / reproducing unit 7 for recording video / audio data on the magnetic tape 9 or reproducing video / audio data recorded on the magnetic tape 9, and at the time of recording or reproduction Alternatively, the magnetic tape drive mechanism 8 for running the magnetic tape 9 at the time of rewinding or fast-forwarding and the video / audio data reproduced by the magnetic tape recording / reproducing unit 7 are transmitted to the information recording / reproducing apparatus B, or from the information recording / reproducing apparatus B A transmission / reception circuit 10 for receiving the control signal, an IEEE1394 interface 11 between the transmission / reception circuit 10 and the IEEE1394 cable L, an operation unit 12 having a plurality of operation keys, and a system controller 13 for controlling the entire camera. And.

  The information recording / reproducing apparatus B is connected via a digital input / output terminal b for connection to the IEEE1394 cable L, receives video / audio data from the digital video camera A, and transmits a control signal to the digital video camera A. Transmission / reception circuit 14, a data converter 15 for converting video / audio data peculiar to IEEE 1394 received by the transmission / reception circuit 14 into normal video / audio data handled by the information recording / reproducing apparatus B, and video / audio data from the data converter 15 And the decoder 16 for decoding the video and audio data from the decoder 16 by the MPEG method and recording on the recording medium 18 at the time of recording, and the video and audio data recorded on the recording medium 18 at the time of reproduction by expanding and reproducing the data. Recording / reproducing unit 17 that outputs to monitor device C, and data necessary for control A memory 19 such as a flash ROM, a timer 20 for measuring the recording time when dubbing recording is performed to record the video / audio data output from the digital video camera A on the recording medium 18, and a plurality of operation keys. An operation unit 21 indicating a remote controller having a remote control, a system controller 22 that controls the entire apparatus, and a light receiving unit 23 that receives an infrared operation signal from the remote control 24, converts it into an electrical operation signal, and applies the operation signal to the system controller 22. And.

  In particular, as a feature of the present embodiment, the system controller 22 is specially configured to perform special playback indicating fast forward playback, rewind playback, or slow playback after being set to the camera operation mode for operating the digital video camera A. Special operation detection means for detecting that the special playback operation has been performed in order to switch the stage of the special playback speed during special playback by the playback operation, and the special playback operation by the special operation detection means. Is detected, a state acquisition command is transmitted to the digital video camera A, and the camera state acquisition means for acquiring the camera state by this state acquisition command, and a special playback speed indicated by the acquired camera state one step faster A special replay that sends a special replay operation command one step faster to the digital video camera A for special replay. An operation command transmitting means and a camera state in which the state acquisition command is transmitted to the digital video camera A after the one-step fast special playback operation command is transmitted to the digital video camera A, and the camera state is acquired again by the state acquisition command. Whether or not the special reproduction speed indicated by the acquisition means and the special reproduction speed indicated by the camera state acquired by the camera state acquisition means again is the special reproduction state of the special reproduction speed that is one step faster executed by the one-step faster special reproduction operation command. Special reproduction state determining means for determining whether or not the special reproduction state of the special reproduction speed of one step faster is recognized, the special reproduction speed stage switching is completed, but the one stage faster special reproduction is recognized. If it is determined that the speed is not in the special playback state, it waits for a predetermined response time, When the special reproduction state re-determination means for re-determining whether or not the state is the state and the special reproduction state re-determination means determine that the special reproduction state is at the one stage higher special reproduction speed, the special reproduction speed is determined. Although it is recognized that the switching of the stage has been completed, if it is determined that the special playback state is not in the special playback speed that is one step faster, the process returns to the processing from the special playback operation command transmission means, and the special playback that is one step faster. Processing transition means for shifting to processing related to processing.

  FIG. 2 is a diagram for explaining operation commands (special playback operation commands) for fast forward playback / rewind playback / slow playback corresponding to each model in the present embodiment. In FIG. 2, the playback_mode command includes NEXT FRAME (forward direction frame advance command), SLOW FORDWARD (command for the slowest forward slow playback), and SLOW FORWARD 6, SLOW FORWARD 5, and SLOW, which are shown in order from the slow slow speed command. There are FORWARD4, SLOW FORWARD3, SLOW FORWARD2, and SLOW FORWARD1 (the command for the highest speed of normal slow playback).

  Also, the playback_mode command includes X1 (fast forward command at the same speed as normal playback), FAST FORWARD1, FAST FORWARD2, FAST FORWARD3, FAST FORWARD4, FAST FORWARD5, FAST FORWARD5, FAST FORWARD5, FAST FORWARD The fastest playback command).

  Also, the playback_mode command includes PREVIOUS FRAME (reverse frame advance command), SLOWEST REVERSE (reverse slow playback minimum speed command), and the reverse slow playback speed in descending order, SLOW REVERSE6, SLOW REVERSE5, SLOW REVERSE4, SLOW There are REVERSE3, SLOW REVERSE2, and SLOW REVERSE1 (the highest speed command for reverse slow playback).

  The playback_mode command includes: X1 REVERSE (rewind command at the same speed as reverse playback), FAST REVERSE1, FAST REVERSE2, FAST REVERSE3, FAST REVERSE4, FAST REVERSE5, FAST REVERSE5, FAST REVERSE6 REVERSE (the fastest command for rewind playback) exists.

  The playback_mode command includes REVERSE (reverse playback command), REVERSE PAUSE (reverse pause command), FORWARD (playback command), and FORWARD PAUSE (forward pause command).

  In the example shown in FIG. 2, the a model digital video camera of manufacturer A company, the b model digital video camera of manufacturer A company, and the x model digital video camera of manufacturer B company each have a command marked with a circle. Corresponding actions can be performed. Therefore, in FIG. 1, if the command from the information recording / reproducing apparatus B is in the digital video camera of the model, the digital video camera of the model can execute an operation corresponding to the command. By storing the command shown in FIG. 1 in the memory (flash ROM) 19 of the information recording / reproducing apparatus B, the information recording / reproducing apparatus B is connected with a command corresponding to the digital video camera model of each manufacturer. By sending to the digital video camera, the connected digital video camera can be operated within the range of functions of the connected digital video camera.

  FIG. 3 is a flowchart for explaining the switching process of the fast-forward playback speed in the present embodiment. With reference to this flowchart and FIGS. 1 to 2, the fast-forward playback speed level switching process will be described.

  First, in order to connect the digital video camera A and the information recording / reproducing apparatus B by the IEEE1394 cable L so that the digital video camera A can be operated from the information recording / reproducing apparatus B, the mode of the information recording / reproducing apparatus B is set to the camera operation mode. The operation of setting to is performed by the remote controller 24. Thereby, the information recording / reproducing apparatus B is set to the camera operation mode (step S1). When the fast-forward key of the remote controller 24 is pressed, the system controller 22 of the information recording / reproducing apparatus B detects the pressing of the fast-forward key (step S2), and transmits the FF1 operation command (FAST FORWARD1) to the digital video camera A. (Step S3). Thus, the FF1 operation command from the system controller 22 is input from the transmission / reception circuit 14 to the digital video camera A via the IEEE1394 cable L.

  In the video digital camera A, the system controller 13 receives the input FF1 operation command via the interface 11 and the transmission / reception circuit 10, and controls the magnetic tape recording / reproducing unit 7 and the magnetic tape drive mechanism 8 to perform fast forward reproduction operation. Let Therefore, the magnetic tape recording / reproducing unit 7 reads the video / audio data from the magnetic tape 9 at the fast-forward reproduction speed FF1, and transmits the video / audio data to the information recording / reproducing apparatus B via the transmission / reception circuit 10, the interface 11, and the IEEE1394 cable L. In the information recording / reproducing apparatus B, the audio / video data from the digital video camera A is received by the transmission / reception circuit 14, and after passing through the processing of the data converter 15 and the decoder 16, the recording / reproducing unit 17 is passed through to the monitor apparatus C. Output. As a result, the monitor device C displays the video that has been fast-forward played at the fast-forward playback speed FF1.

  In this way, when fast forward playback is performed at the fast forward playback speed FF1, when the fast forward key of the remote controller 24 is pressed again in order to perform fast forward playback at one stage higher speed, the special operation detection of the system controller 22 is detected. The means detects pressing of the fast-forward key (step S4). Next, the camera state acquisition means of the system controller 22 transmits a state acquisition command to the system controller 13 of the digital video camera A via the transmission / reception circuit 14, the IEEE 1394 cable L, the interface 11, and the transmission / reception circuit 10 (step). S5). In response to the status acquisition command, the system controller 13 detects the current status of the digital video camera A (in this example, the FF1 fast-forward playback status), and transmits / receives the transmission / reception circuit 10, the interface 11, the IEEE 1394 cable L, and the transmission / reception. The data is transmitted to the system controller 22 of the information recording / reproducing apparatus B via the circuit 14. Thereby, the camera state acquisition means of the system controller 22 acquires the current state of the digital video camera A (FF1 fast forward playback state) (step S6).

  Next, the system controller 22 performs a fast forward playback operation command (one step faster) for causing fast forward playback to be performed one step faster than the fast forward playback speed indicated by the acquired camera state (in this example, FF1 fast forward playback speed). In this example, the FF2 reproduction operation command) is transmitted to the system controller 13 of the digital video camera A via the transmission / reception circuit 14, the IEEE1394 cable L, the interface 11, and the transmission / reception circuit 10 (step S7).

  If the transmitted FF2 playback operation command is not the fastest FF playback operation command (step S8), the camera status re-acquisition means of the system controller 22 sends the status acquisition command to the transmission / reception circuit 14, the IEEE 1394 cable L, The data is transmitted to the system controller 13 of the digital video camera A via the interface 11 and the transmission / reception circuit 10 (step S9). Next, in response to the status acquisition command, the system controller 13 detects the current status of the digital video camera A (in this example, the FF1 fast-forward playback status), and transmits / receives the transmission / reception circuit 10, the interface 11, the IEEE 1394 cable L, The data is transmitted to the system controller 22 of the information recording / reproducing apparatus B via the transmission / reception circuit 14. As a result, the camera state acquisition unit of the system controller 22 acquires the current state of the digital video camera A (FF1 fast-forward playback state) (step S10).

  Thus, the special playback state determination means of the system controller 22 causes the special playback operation command (this fast playback speed in this case) indicated by the camera state acquired by the camera state again acquiring means to be one step faster (this In this case, it is determined whether or not the special reproduction state (FF2 fast-forward reproduction state) at one stage faster special reproduction speed executed by the FF2 operation command) (step S11). If it is determined that the special playback state (FF2 fast forward playback state) at the one stage higher special playback speed is detected, it is recognized that the switching of special playback (fast forward playback) has been completed (step S12). If it is determined that the special playback state (FF2 fast-forward playback state) is not in the fast special playback speed (FF2 playback speed), the special playback state re-determination means of the system controller 22 determines a predetermined response time (in this example, 200 ms). ) (Step S13), it is determined again whether or not it is in the special reproduction state (FF2 fast forward reproduction state) at one stage higher special reproduction speed (step S14).

  When the special reproduction state determination unit determines that the special reproduction state (FF2 fast-forward reproduction state) is at the one-step faster special reproduction speed, it recognizes that the switching of special reproduction (FF2 fast-forward reproduction) has been completed. (Step S12), if it is determined that the special playback state (FF2 fast forward playback state) at the one stage faster special playback speed is not reached, the process transition means of the system controller 22 performs processing from the special playback operation command transmission means. Returning to (Step S7), the process proceeds to a process related to the special reproduction process (FF3 fast forward reproduction process) which is one step faster (Step S15).

  In the processing from the next step S7, the processing for FF3 fast-forward reproduction is performed. Similarly, when the process reaches step S15, the process returns to step S7, and the processing for FF4 fast-forward reproduction is similarly performed. When such a process is repeated until the fastest FF playback operation command is transmitted to the digital video camera A, in step S8, the system controller 22 determines that the fast-forward operation command transmitted in the process of step S7 is the same. If it is determined that the command is the fastest FF playback operation command, a status acquisition command is transmitted to the digital video camera A (step S16), and the fastest fast-forward playback status that is the status of the digital video camera A is acquired (step S16). S17), the completion of switching to the fastest fast-forward playback is recognized (step S18).

  In the flowchart shown in FIG. 3, the fast-forward playback speed stage switching process has been described, but the rewind playback speed stage switching process and the slow playback speed stage switching process are also realized by the same process. it can.

  FIG. 3 is a flowchart of a process in which the information recording / reproducing apparatus B performs a fast-forward reproduction operation on the digital video camera A, assuming that the digital video camera A shown in FIG. 1 is a company A model digital video camera shown in FIG. Will be described with reference to FIG.

  First, in order to connect the digital video camera A and the information recording / reproducing apparatus B by the IEEE1394 cable L so that the digital video camera A can be operated from the information recording / reproducing apparatus B, the mode of the information recording / reproducing apparatus B is set to the camera operation mode. The operation of setting to is performed by the remote controller 24. Thereby, the information recording / reproducing apparatus B is set to the camera operation mode (step S1). When the fast-forward key on the remote controller 24 is pressed, the system controller 22 of the information recording / reproducing apparatus B detects the pressing of the fast-forward key (step S2) and transmits FAST FORWARD1 (see FIG. 2) to the digital video camera A. (Step S3). Thus, FAST FORWARD 1 from the system controller 22 is input from the transmission / reception circuit 14 to the digital video camera A via the IEEE 1394 cable L.

  In the video digital camera A, the system controller 13 receives the input FAST FORWARD 1 through the interface 11 and the transmission / reception circuit 10 and controls the magnetic tape recording / reproducing unit 7 and the magnetic tape driving mechanism 8 to perform fast forward reproduction operation. Therefore, the magnetic tape recording / reproducing unit 7 reads the video / audio data from the magnetic tape 9 at the fast forward reproduction speed FF1 (fastest reproduction lowest speed), and records and reproduces information via the transmission / reception circuit 10, the interface 11, and the IEEE1394 cable L. Transmit to device B. In the information recording / reproducing apparatus B, the audio / video data from the digital video camera A is received by the transmission / reception circuit 14, and after passing through the processing of the data converter 15 and the decoder 16, the recording / reproducing unit 17 is passed through to the monitor apparatus C. Output. As a result, the monitor device C displays a video that has been fast-forward played at the fast-forward playback speed FF1 (low-speed fast playback speed).

  In this way, when fast forward playback is performed at the fast forward playback speed FF1 (fast forward playback minimum speed), when the fast forward key of the remote controller 24 is pressed again to perform fast forward playback at one stage higher speed, the system The special operation detection means of the controller 22 detects pressing of the fast-forward key (step S4). Next, the camera state acquisition means of the system controller 22 transmits a state acquisition command to the system controller 13 of the digital video camera A via the transmission / reception circuit 14, the IEEE 1394 cable L, the interface 11, and the transmission / reception circuit 10 (step). S5). In response to the status acquisition command, the system controller 13 detects the current status of the digital video camera A (in this example, the FF1 fast-forward playback status), and transmits / receives the transmission / reception circuit 10, the interface 11, the IEEE 1394 cable L, and the transmission / reception. The data is transmitted to the system controller 22 of the information recording / reproducing apparatus B via the circuit 14. Thereby, the camera state acquisition means of the system controller 22 acquires the current state of the digital video camera A (FF1 fast forward playback state) (step S6).

  Next, the system controller 22 uses a fast-forward playback operation command that is one step faster than the fast-forward playback speed indicated by the acquired camera state (in this example, FF1 fast-forward playback speed). A certain FAST FORWARD 2 (see FIG. 2) is transmitted to the system controller 13 of the digital video camera A via the transmission / reception circuit 14, the IEEE 1394 cable L, the interface 11, and the transmission / reception circuit 10 (step S7).

  If the transmitted FAST FORWARD2 is not FASTEST FORWARD (see FIG. 2) which is the fastest FF operation command (see FIG. 2) (step 8), the camera state re-acquisition means of the system controller 22 sends the state acquisition command to the transmission / reception circuit. 14, the data is transmitted to the system controller 13 of the digital video camera A via the IEEE 1394 cable L, the interface 11, and the transmission / reception circuit 10 (step S9). Next, in response to the state acquisition command, the system controller 13 detects the current state of the digital video camera A (in this example, since there is no FAST FORWARD2 command in the camera, the FF1 fast-forward playback state). The data is transmitted to the system controller 22 of the information recording / reproducing apparatus B via the transmission / reception circuit 10, the interface 11, the IEEE1394 cable L, and the transmission / reception circuit 14. As a result, the camera state acquisition unit of the system controller 22 acquires the current state of the digital video camera A (FF1 fast-forward playback state) (step S10).

  Thereby, the special playback state determination means of the system controller 22 is the fast forward playback state of FAST FORWARD2, which is the special playback operation command whose fast forward playback speed indicated by the camera state acquired by the camera state again acquisition means is one step faster. It is determined whether or not (step S11). In this case, since the A company a model does not have FAST FORWARD2 (see FIG. 2), it is determined that the FAST FORWARD2 fast-forward playback state is not in effect. Then, the special reproduction state re-determination means of the system controller 22 waits for 200 ms, for example (step S13), and again determines whether or not the fast-forward reproduction state of FAST FORWARD 2 is established (step S14).

  However, since FAST FORWARD2 does not originally exist in the A company a model digital video camera, it is determined that the current camera state is not the FF2 fast-forward playback state. Then, the process transfer means of the system controller 22 returns to the process from the special reproduction operation command transmission means (step S7), and shifts to a process related to the FF3 fast forward reproduction process which is one step faster (step S15).

  Next, the system controller 22 performs a fast-forward playback operation command that is one step faster than the fast-forward playback speed indicated by the acquired camera state (in this example, FF1 fast-forward playback speed). FAST FORWARD3 (see FIG. 2) is transmitted to the system controller 13 of the digital video camera A via the transmission / reception circuit 14, the IEEE1394 cable L, the interface 11, and the transmission / reception circuit 10 (step S7).

  If the transmitted FAST FORWARD3 is not FASTEST FORWARD (see FIG. 2) which is the fastest FF playback operation command (see FIG. 2) (step 8), the camera state re-acquisition means of the system controller 22 transmits and receives the state acquisition command. The data is transmitted to the system controller 13 of the digital video camera A via the circuit 14, the IEEE 1394 cable L, the interface 11, and the transmission / reception circuit 10 (step S9). Next, in response to the state acquisition command, the system controller 13 detects the current state of the digital video camera A (in this example, since there is no FAST FORWARD3 command in the camera, the FF1 fast forward playback state is again detected). Then, the data is transmitted to the system controller 22 of the information recording / reproducing apparatus B via the transmission / reception circuit 10, the interface 11, the IEEE1394 cable L, and the transmission / reception circuit 14. As a result, the camera state acquisition unit of the system controller 22 acquires the current state of the digital video camera A (FF1 fast-forward playback state) (step S10).

  Thereby, the special playback state determination means of the system controller 22 is the fast forward playback state of FAST FORWARD3 which is the special playback operation command whose fast forward playback speed indicated by the camera state acquired by the camera state again acquisition means is one step higher. It is determined whether or not (step S11). In this case, since the FAST FORWARD3 does not exist in the A company a model digital video camera (see FIG. 2), it is determined that the fast-forward playback state of the FAST FORWARD3 is not set. Then, the special reproduction state re-determination means of the system controller 22 waits for 200 ms, for example (step S13), and again determines whether or not the fast-forward reproduction state of FAST FORWARD 3 is present (step S14).

  However, since FAST FORWARD3 does not originally exist in the A company a model, it is determined that the current camera state is not the FF3 fast forward playback state. Then, the process transition means of the system controller 22 returns to the process from the special reproduction operation command transmission means (step S7) and shifts to a process related to the FF4 fast forward reproduction process which is one step faster (step S15).

  Next, the system controller 22 performs a fast-forward playback operation command that is one step faster than the fast-forward playback speed (FF3 fast-forward playback speed in this example) indicated by the acquired camera state. FAST FORWARD4 (see FIG. 2) is transmitted to the system controller 13 of the digital video camera A via the transmission / reception circuit 14, the IEEE1394 cable L, the interface 11, and the transmission / reception circuit 10 (step S7).

  If the transmitted FAST FORWARD 4 is not FASTEST FORWARD (see FIG. 2) which is the fastest FF operation command (see FIG. 2) (step S8), the camera state re-acquisition means of the system controller 22 sends the state acquisition command to the transmission / reception circuit. 14, the data is transmitted to the system controller 13 of the digital video camera A via the IEEE 1394 cable L, the interface 11, and the transmission / reception circuit 10 (step S9). Next, in response to the state acquisition command, the system controller 13 detects the current state of the digital video camera A (in this case, since the FAST FORWARD4 command is present in the camera, the FF4 fast-forward playback state). The data is transmitted to the system controller 22 of the information recording / reproducing apparatus B via the transmission / reception circuit 10, the interface 11, the IEEE1394 cable L, and the transmission / reception circuit 14. Thereby, the camera state re-acquisition means of the system controller 22 acquires the current state of the digital video camera A (FF4 fast-forward playback state) (step S10).

  Thereby, the special playback state determination means of the system controller 22 is the fast forward playback state of FAST FORWARD4 which is a special playback operation command whose fast forward playback speed indicated by the camera state acquired by the camera state again acquisition means is one step higher. It is determined whether or not (step S11). In this case, the A company a model digital video camera has FAST FORWARD4 (see FIG. 2), so it is determined that FAST FORWARD4 is in the fast-forward playback state, and switching to the fast-forward playback speed of FF4 is completed (see FIG. 2). Step S12).

  Here, the switching of the fast-forward playback speed for the digital video camera of Company A's model A as the digital video camera has been described. However, the present invention is not limited to this, and the switching of the fast-forward playback speed for the digital video camera of another company's model is described. Can be realized by similar processing. Further, switching of the rewind playback speed stage and switching of the slow playback speed stage can be realized by the same processing.

  In short, in this embodiment, as shown in FIG. 4, when the FF key (fast forward key) of the remote controller on the information recording / reproducing apparatus side is pressed, the information recording / reproducing apparatus is in the FF1 state at this time. The command FF2 is transmitted to the digital video camera. However, since the digital video camera does not have a function for the command FF2, the camera state remains unchanged and remains in the FF1 state. Therefore, even if the information recording / reproducing apparatus sends the command FF2 to the digital video camera, the acquired camera state is the FF1 state, so the command FF3 is next sent to the digital video camera. Thereby, the state of the digital video camera is changed to the FF3 state. In this manner, each special playback operation command is sequentially transmitted to the digital video camera until the camera state of the digital video camera executed by the special playback operation command transmitted from the information recording / playback apparatus is changed.

  As described above, according to the present embodiment, the speed of special playback during special playback by special playback operation for performing special playback indicating fast-forward playback, rewind playback, or slow playback. When the special playback operation for switching the stage is performed, each special playback operation command is sequentially transmitted to the digital video camera until the camera state executed by the transmitted special playback operation command is changed. Regardless of the model, digital video cameras can be switched between fast-forward, rewind, and slow playback speed stages. For users, the fast-forward playback speed, rewind playback speed, or slow playback speed for digital video cameras can be switched. Convenience for switching operation of stage is improved.

  In the present invention, an information recording / reproducing apparatus such as a DVD recorder or a hard disk recorder configured to be able to operate a digital video camera, and a fast-forward playback speed or a rewind playback for a magnetic tape set in the digital video camera. It is possible to add a function that makes it possible to switch the speed or the speed of the slow playback.

It is a block diagram which shows the structure of the information recording / reproducing apparatus which concerns on one Embodiment of this invention, and a digital video camera. It is a figure for demonstrating the operation command (special reproduction operation command) of fast forward reproduction | rewind reproduction | regeneration reproduction | regeneration slow motion corresponding to each model in the said embodiment. 4 is a flowchart for explaining switching processing of a fast-forward playback speed stage in the embodiment. It is a figure for demonstrating simply the process which switches the speed step of fast-forward reproduction | regeneration in the said embodiment.

Explanation of symbols

A Digital video camera B Information recording / reproducing device L IEEE1394 cable 1 Imaging lens (imaging means)
2 Imaging device (imaging means)
4 Microphone (voice input means)
9 Magnetic tape 18 Recording medium 22 System controller

Claims (3)

The video information picked up by the image pickup means and the sound information input by the sound input means are recorded on a magnetic tape and can be connected via a cable to a digital video camera that reproduces the video / audio information recorded on the magnetic tape. In the information recording / reproducing apparatus configured to record the video / audio information reproduced from the digital video camera on a recording medium and to reproduce the video / audio information recorded on the recording medium,
After the camera is set to the camera operation mode for operating the digital video camera, special playback is being performed by a special playback operation for performing special playback indicating fast forward playback, rewind playback, or slow playback. Special operation detecting means for detecting that a special reproduction operation has been performed in order to switch the speed of special reproduction;
When a special playback operation is detected by the special operation detection unit, a camera state acquisition unit that transmits a state acquisition command to the digital video camera and acquires a camera state by the state acquisition command;
Special reproduction operation command transmission means for transmitting a special reproduction operation command one step faster than the special reproduction speed indicated by the acquired camera state to the digital video camera;
Camera state reacquisition means for transmitting a state acquisition command to the digital video camera after the one-stage fast special playback operation command is transmitted to the digital video camera, and acquiring the camera state again by the state acquisition command;
Special reproduction for determining whether or not the special reproduction speed indicated by the camera state acquired by the camera state re-acquisition means is the special reproduction state at the special reproduction speed one step faster executed by the one-step faster special reproduction operation command. State determination means;
If it is determined that the special playback state is at the special playback speed that is one step faster, it is recognized that the switching of the stage of the special playback speed is completed, but it is determined that the special playback state is not at the one stage faster special playback speed. In this case, after waiting for a predetermined response time, the special reproduction state determination unit again determines again whether or not the special reproduction state is one stage faster special reproduction speed,
If the special playback state is again determined by the determining means to be in the special playback state at the special playback speed that is one step faster, it is recognized that the switching of the stage of the special playback speed has been completed. A process controller for returning to the process from the special reproduction operation command transmission means and shifting to a process relating to the special reproduction process that is one step faster when the special reproduction state is determined. An information recording / reproducing apparatus. The video information picked up by the image pickup means and the sound information input by the sound input means are recorded on a magnetic tape and can be connected via a cable to a digital video camera that reproduces the video / audio information recorded on the magnetic tape. In the information recording / reproducing apparatus configured to record the video / audio information reproduced from the digital video camera on a recording medium and to reproduce the video / audio information recorded on the recording medium,
When special playback is being performed by special playback operation for performing special playback indicating fast-forward playback, rewind playback, or slow playback, special playback operation is performed to switch the stage of special playback speed. When the digital video camera is detected, the camera status is acquired by the status acquisition command to the digital video camera, and the digital video camera is changed until the acquired camera status changes to the camera status executed by the transmitted special playback operation command. An information recording / reproducing apparatus comprising a system controller that sequentially transmits special reproduction operation commands.   After the system controller is set to the camera operation mode for operating the digital video camera, special playback is performed by a special playback operation for performing special playback indicating fast forward playback, rewind playback, or slow playback. A special operation detecting means for detecting that a special reproduction operation has been performed in order to switch the speed stage of the special reproduction, and when the special reproduction operation is detected by the special operation detection means, the digital video Camera state acquisition means for transmitting a state acquisition command to the camera and acquiring the camera state by this state acquisition command, and one stage for performing special playback one stage faster than the special playback speed indicated by the acquired camera state Special reproduction operation command transmission means for transmitting a quick special reproduction operation command to the digital video camera; After the one-step fast special playback operation command is transmitted to the digital video camera, a status acquisition command is transmitted to the digital video camera, and a camera status re-acquisition means for acquiring the camera status again by the status acquisition command; Special reproduction state for determining whether or not the special reproduction speed indicated by the camera state acquired by the camera state re-acquisition means is the special reproduction state at the special reproduction speed one step faster executed by the special reproduction operation command one step faster. If it is determined that the special reproduction state at the special reproduction speed is one step higher than the determination means, it is recognized that the switching of the special reproduction speed step is completed, but it is not the special reproduction state at the special reproduction speed one step faster. If it is determined that the special reproduction state of one stage faster special reproduction speed is waited for a predetermined response time. When the special reproduction state re-determination means and the special reproduction state re-determination means determine that the special reproduction state is one stage faster special reproduction speed, the switching of the special reproduction speed stage is completed. Recognize, but if it is determined that the special reproduction state is not at the one-step faster special reproduction speed, the process returns to the process from the special reproduction operation command transmission means and the process proceeds to the process related to the one-step faster special reproduction process. The information recording / reproducing apparatus according to claim 2, further comprising a transfer unit.

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