DE4117021C2 - Single image video device - Google Patents

Description

The invention relates to a single image video device according to the preamble of claim 1, through which a video signal and / or an audio signal on a magnetic disk recorded and reproduced these signals become.

JP-1-220 226 (A) is a multimedia device known in which a continuous audio signal and a still video frame in a variety divided by tracks (N, m) of a storage medium being, when playing the continuous audio signal is restored and at the same time the Still video frame is built. As a result a multimedia show that reaches both in real time a continuous audio signal (e.g. music) as well a still video frame from an optical storage medium reads and reproduces so that the audio signal is not interrupted.

In contrast, in a single image video device generally a magnetic disk as a recording medium for storing a video signal and / or an audio signal used. The magnetic plate is with a Provide a variety of tracks that are concentric on the  Plate are provided. The video signal and the audio signal are each on different tracks recorded. Then be in a conventional Still image video device that is recorded on each track Signals played back track by track.

As described above, in a conventional The still image video device that is stored in each track Played signals one by one, d. H. a conventional still video device can do not play back multiple tracks in a row. If so a variety of tracks or those in a variety signals stored by tracks can be played back the playback process must be repeated track by track become. Therefore, if the user only has a video signal or want to play an audio signal, the Playback can be repeated track by track what is tedious.

The invention has for its object an individual Specify video device in which a variety of Tracks, each only a predetermined type of signals save to view the previously recorded Recordings can be played back one after the other can.

This object is achieved by the specified in claim 1 Features resolved.

Developments of the invention are in the Subclaims marked.

Further details and advantages of the invention emerge derive from the following Be writing which in connection with the attached Drawings of the invention using an exemplary embodiment game explained. It shows

Fig. 1 is a block diagram illustrating the structure of a still picture video apparatus according to an embodiment of the present invention,

Fig. 2A, the displays on an LCD (liquid crystal) panel in the ordinary reproduction mode on a len Videosi gnal,

FIG. 2B, the illustration of the display on the LCD panel for the normal playback mode for an audio signal,

Fig. 2C, the displays on the LCD panel in the normal playback mode for a video signal and an Audiosi gnal, which form a pair,

FIG. 2D, the displays on the LCD panel in the normal sequence playback mode for a video signal,

FIG. 2E, the displays on the LCD panel, in the normal sequence playback mode for an audio signal

Fig. 2F, the displays on the LCD panel in the normal sequence playback mode diosignal for a video signal and an Au in pairs together amount hear

Fig. 2G is an illustration of the display on the LCD panel in a Folgewiedergabemo dus for a video signal,

Fig. 2H is an illustration of the display on the LCD panel in the sequence play mode for an audio signal,

Fig. 2I illustrates the display on the LCD panel in the subsequent playback mode for a video signal and an audio signal, which belong together in pairs,

Fig. 3A is a flowchart for explaining the reproducing operation,

Fig. 3B is a flow chart for explaining the Wiedergabesubroutine,

Fig. 3C is a flowchart illustrating the normal sequence playback mode, and

Fig. 3D is a flowchart for explaining the processes in the successive reproduction of video signals, audio signals and audio-video signals.

Fig. 1 shows a block diagram showing the essential elements of a still video apparatus according to an embodiment of the present invention.

A floppy disk, that is, a magnetic disk 11 , is used as the recording medium in this still video apparatus. It bears a multitude of tracks arranged concentrically to each other. An audio signal and a video signal are each stored on a separate track.

The magnetic disk 11 is rotated by a spindle motor 12 which is controlled by a spindle motor control circuit 13 . A magnetic head 14 can be adjusted radially with respect to the magnetic plate 11 by a track motor 15 , which in turn is controlled by a track motor control circuit 16 , so as to position the magnetic head 14 on a predetermined track of the magnetic plate 11 . Thereby, a recording-reproducing circuit 17 can record or reproduce a desired video signal or audio signal on the desired track. A monitor 18 comprising a monitor and a speaker is connected to the recording and playback circuit 17 to reproduce the image and sound.

A system control unit 21 , for example a micro computer, controls the track motor control circuit 16 , the recording-playback circuit 17 and a display control circuit 22 so that an LCD panel (liquid crystal panel) 23 shows the predetermined information. In addition to these control functions, the system control unit controls the operating states in which information is recorded on the magnetic disk 11 or information stored on the disk 11 is read and reproduced, and information on the disk 11 is erased.

With the system control unit 21 , a trigger switch 32 , an exposure correction switch 31 , a mode switch 33 , a selector switch 34 , an up switch 35 , a down switch 36 and a flash light switch 37 are connected. The trigger switch 32 is operated when the recording or playback is to be started and ended. The exposure correction switch 31 is operated to set an exposure. The mode switch 33 and the selector switch 34 are operated to select and set various modes such as recording, playback and erasing. The up switch 35 and the down switch 36 are operated to increase or decrease a number displayed on the LCD panel 23 . The flash light switch 37 is operated to enter a predetermined flash mode of the system control unit 21 .

The operation of the arrangement described above is described below with reference to FIGS . 2A to 2I, which show examples of the displays on the LCD panel 23 .

As shown in these drawings, the LCD panel 23 can provide various displays. Furthermore, a blinking position of each display can be changed in the vertical direction by operating the mode switch 33 and in the horizontal direction by operating the selector switch 34 .

For example, when the mode switch 33 is operated, a blinking indicator is sequentially positioned in the following display areas: a single image mode indicator (a rectangular indicator in the drawings) indicating the mode for taking a single image, a "REC" indicator indicating the playback mode be referred to, a "NORMAL" display indicating a normal mode, an "AUTO" display of a white balance symbol "WB" and a 7-segment element display of digits representing year, month and day, or hours, minutes and Show seconds.

There are two types of normal modes: normal mode, in which a recording or reproduction of a Vi deosignals or an audio signal track by track is conducted or in which a record or a how output of a video signal and an audio signal (a AV signal), which belong together in pairs, to two  Running tracks that are read for these signals and a normal serial or sequential Recording / playback mode in which regardless of a distinction between audio signal, video signal and AV signal a recording or playback se is performed sequentially for a variety of tracks.

For example, when the selector switch 34 triggers the blinking of the single-image mode display located on the first line of the display panel, a self-timer display (shown by a bell in the drawings) is set to set a self-timer, a display for continuous shooting (shown in the drawings by three overlapping rectangles) in which one, two or five frames per second are recorded and the numbers one, two and five flash, which indicate the selected number of recordings per second in continuous recording mode.

In the same manner as described above selectively and sequentially in the second display line "REC" as the name for a recording mode, "PLAY" as the name for a playback mode and "ERASE" is displayed for the name of a delete mode.

In the third line the reproduced in the drawings The following displays can be selected are shown as wise: "NORMAL" denotes the above described normal mode, "A" denotes a Audio mode in which an audio signal is recorded or can be played and "V" denotes a Video mode in which a video signal is recorded or is played. In an "AV" mode, in which a Video signal  and an audio signal which form a pair drawn or reproduced, both "A" as well as "V" is displayed.

With a "WB" indicator for the white balance, which in the fourth line is followed by the individual Be drawings selected one after the other: "AUTO" denotes an automatic mode, a cloud (in the drawings represented by a schematic cloud) the shooting mode overcast, one Good weather display (represented by a sun) denotes the recording operation when the sky is clear, one Fluorescent lamp display (represented by a Fluorescent lamp) denotes a recording operation at the light from fluorescent lamps and one Light bulb indicator (represented by a light bulb) denotes the recording operation in the light of one Light bulb.

The digits shown can be found in the fifth line optionally specify a date or a time.

The display to the left of the date shows the status of the battery rie and flashes when the battery voltage is too low rig is. The display to the right of the date shows the status a magnetic disk, d. H. indicates whether a magnetic disk is present in the still image video device or Not. The indicator always lights up when a Ma gnetplatte is present in the facility.

By actuating the mode switch 33 and the selector switch 34 , a blinking position is thus moved, where a command for a mode display by the blinking position is sent to the system control unit 21 . The unselected displays change from the flashing state to the permanent lighting state.

Actuation of the flash light switch 37 causes the AUTO display, the ON display and the OFF display to flash in succession.

When the recording mode is selected (with the "REC" indicator flashing) and the trigger switch 32 is actuated, the system control unit 21 causes the spindle motor 12 to be driven via the spindle motor control circuit 13 so that the magnetic disk 11 rotates. At the same time, the track motor 15 is driven by the track motor control circuit 16 so that the magnetic head 14 is moved to a predetermined position over the tracks. The track position (ie the track number) is indicated by a two-digit number on the left side of the "REC" display. Then, a predetermined video or audio signal is supplied to the magnetic head 14 through the recording / reproducing circuit 17 so that this signal is recorded on the predetermined track of the magnetic disk 11 .

The recording / reproducing circuit 17 generates a code signal (a DPSK signal or a control code, as will be described later) in accordance with a control signal generated by the system control unit 21 , and supplies this code signal together with a predetermined video signal or audio signal to the magnetic head 14 . These signals are then recorded on a predetermined track of the magnetic disk 14 . The code signal includes a track number, a recording mode, etc., as a DPSK signal when a video signal is recorded on the magnetic disk. It includes this data as a control code when an audio signal is recorded on the magnetic disk. When recording in AV mode is carried out, information indicating that the corresponding audio signal exists is included in the DPSK signal, or information indicating that the corresponding video signal exists exists in the Tax code included. In this embodiment, an audio signal is recorded on an adjacent track that lies within the track on which the corresponding video signal is recorded.

If the exposure correction switch 31 is operated during the recording mode before this recording operation, an exposure correction display "± EF" flashes and the display of the 7-segment element to the right of the exposure correction display indicates an exposure correction value which is present at that time. If the up switch 35 or the down switch 37 is operated while the exposure correction switch 31 is operated, the exposure correction value is increased or decreased. If the exposure correction switch 31 and the trigger switch 32 are operated simultaneously, a picture is taken in the state in which the exposure has been set to the correct value.

When the continuous mode is set in a recording mode, the continuous shooting indicator lights up. Furthermore, one of the numbers one, two and five flashes according to the selected number of frames per second. When the release switch 32 is operated in this state, video signals of the selected number of frames per second are continuously recorded.

A reproduction process will be described in the following with reference to the flowcharts in Figs. 3A to 3D.

When the playback mode is set by operating the mode switch 33 and the selector switch 34 , the "PLAY" indicator flashes. In this state, when the trigger switch 32 is operated (step S1), the "PLAY" and "NORMAL" indicators light up (step S2), the magnetic disk 11 is driven by the spindle motor 12 (step S3), and the playback subroutine is executed (step S4).

The playback subroutine will now be described with reference to the flowchart shown in Fig. 3B.

In this subroutine, first, a track mode in which a signal is stored on a track to be reproduced is input from the recording / reproduction circuit 17 to the system control unit 21 (step S21). The system control unit 21 reads information indicating whether the track is only one Stores video signal (video mode) or only an audio signal (audio mode) or whether the track stores a video signal and an associated audio signal (AV mode) via the recording / playback circuit 17 in accordance with a DPSK (phase difference modulation) signal or control data.

If the track mode of the track to be reproduced is the video mode (step S22) as shown in FIG. 2A, the "V" indicator lights up while the "A" indicator is turned off (step S23). Then, a video signal is read from the magnetic head 14 , which is set to the track by the track motor 15 under the control of the track motor control circuit 16 . The recording / playback circuit 17 supplies a video signal to the playback device 18 as it is so that the playback of the video signal can be carried out (step S24).

If the track mode of the track to be reproduced is the audio mode (step S25) as shown in FIG. 2B, the indicator "A" lights up while the indicator "V" goes out (step S26). Then, an Au diosignal is read from the magnetic head 14 , which is set by the track motor 15 under the control of the track motor control circuit 16 to the relevant track. This audio signal is stored once in a memory of the recording / reproducing circuit 17 and then read so as to be reproduced in this way (step S27).

If the track mode is an AV mode (step S28) as shown in Fig. 2C, the indicators "A" and "V" light up (step S29). Then, the magnetic head 14 is set by the track motor control circuit 16 and the track motor 15 to an adjacent track which is within the previous track and on which an audio signal is recorded. Then the track is reproduced so that the reproduced audio signal is compressed, that is, that the signal recording period is shortened. The audio signal is stored in a memory in the recording / playback circuit. Then the magnetic head 14 is set or moved back on the track on which a video signal associated with the audio signal is recorded. In this way, the video signal stored in the track is reproduced. This reproduced video signal is fed to the playback device 18 and displayed on the monitor. At this time, the audio signal stored in the memory is expanded to the original period and output by the reproducing device 18 . As described above, in this embodiment, an audio signal is recorded on a track which is adjacent to and within the track on which the corresponding video signal was recorded. In this way, the video signal and the corresponding audio signal are output at the same time (step S30).

If the track is not a video signal or an audiosi gnal stores, the displays "A" and "V" are output switches (step S31).

If the exposure correction switch 31 is not operated during this playback operation, the check as to whether the exposure correction switch 31 has been operated or not is repeated until the trigger switch 32 is operated again. This sends a command to stop playback (steps S5 and S6). Note that in this embodiment, the exposure correction switch 31 is also used to give the serial playback mode command, as will be described later.

When the trigger switch 32 is operated again to end playback (step S7), the magnetic plate 11 is stopped. The displays "NORMAL", "A" and "V" are turned off (step S8). Then, the display "PLAY", which has been steadily lit up, starts to flash (step S9). The still image device returns to a state in which it waits for a playback to be carried out. The spindle motor 12 is stopped (step S10).

As described above, playback is only a track or just a pair of tracks.  

On the other hand, when the exposure correction switch 31 is operated during a reproducing operation (step S5), the indicator for continuous recording operation lights up (step S11). A track mode in which a read track stores a signal is supplied from the recording / playback circuit 17 to the system controller 21 (step S42 in Fig. 3C). When it is determined that the track mode is the video mode, the "V" indicator lights up and the "A" indicator is turned off (step S44), as shown in Fig. 2D. Then, video playback is started in the normal serial playback mode (step S45). Furthermore, the system control unit 21 starts an interval timer provided in it (step S46). When the interval timer reaches a predetermined period (for example, 5 seconds) (step S47), the magnetic head 14 is moved radially inward (or outward) by one track by the track motor 15 under the control of the track motor control circuit 16 (step S51). At the same time, the number of tracks displayed on the LCD panel 23 is increased by one.

When the track mode of the next track being played is input (step S42) and it is determined that the track mode is not the video mode but the audio mode (steps S43 and S52), the display "A" lights up while the display "V" is turned off as shown in Fig. 2E (step S53). Then, the audio is reproduced in the normal serial playback mode (step S54). When the reproduction of the audio signal on the track is finished (step S55), the magnetic head 14 is moved radially inward (or outward) by one track by the track motor 15 . At this time, the track number displayed on the LCD panel 23 is increased by one.

When the track mode of the next track being played is entered (step S42) and it is determined that the track mode is neither the video mode nor the audio mode but an AV mode (steps S43, S52 and S59), the indicators "A" and " V "as shown in Fig. 2F (step S60). Then, the AV playback starts in the normal serial playback mode or follow-up playback mode (step S61). When the reproduction of the audio signal on the track is finished (step S55), the magnetic head 14 is moved radially inward (or outward) by two tracks by the track motor 15 . At this time, the track number displayed on the LCD panel 23 is increased by two. Note that in step S51, the magnetic head 14 is advanced two tracks if the track mode is the AV mode.

This process is carried out repeatedly, so that Vi deo signals, audio signals or a pair of videosi gnals and an audio signal (AV signal) in succession corresponding to a track number in a series of tracks be read, causing the normal serial re mode is executed.

When the magnetic head 14 has reached the last track (the innermost track), the magnetic head 14 is moved back to the first track (the outermost track) so that all tracks of the magnetic disk 11 are reproduced one after another.

If the exposure correction switch 31 is operated again before the interval timer has detected a predetermined period of time so that a command to end the normal serial playback mode is sent out (step S48), the normal serial playback mode is triggered, the display "NORMAL" remains on and the display for continuous recording operation is turned off (step S12). After that, the process proceeds to step S6.

If the trigger switch 32 is operated again before the interval timer has taken a predetermined period of time so that a command to end the playback operation is sent (step S49), the display for continuous recording operation is switched off (step S13) and the playback is ended (Steps S7 to S10).

Further, if the exposure correction switch 31 is operated again before the output of an audio signal ends, so that a command to stop playback is sent (steps S55 and S56), the normal serial playback mode is released, the display "NORMAL" remains on and the continuous shooting display is turned off (step S12). The process then proceeds to step S6.

If the trigger switch 32 is operated again before the complete reproduction of the audio signal so that a command to end the playback operation is issued (step S57), the display for continuous recording operation is switched off (step S13) and the playback is ended (steps S7 to S10).

If it is determined during the normal serial playback operation in steps S50 or S58 that the selector switch 34 has been operated, the process advances to the serial video playback mode as shown in Fig. 3D. In this embodiment, the selector switch 34 is also used to designate the type of signal to be reproduced, even if the selector switch 34 was originally used to select a mode such as recording, playback or erasing a signal recorded on the magnetic disk.

First, as shown in Fig. 2G, the continuous shooting display remains on, as does the "V" display. The displays "NORMAL" and "A" are turned off (step S71). Then, the track mode of the track to be reproduced is supplied from the recording / reproducing circuit 17 to the system control unit 21 (step S72). If it is determined that the track mode is the video mode (step S73), video is reproduced (step S74). The system control unit 21 operates the built-in interval timer (step S75). When the interval timer has detected a predetermined period of time (for example, 5 seconds) (step S76), the magnetic head 14 is moved radially inward (or outward) by one track (step S80). At this time, the track number shown on the display panel 23 is increased by one.

If a track mode of the next track to be played is entered (step S72) and it is determined that the track mode is the video mode (step S73), video playback follows in the same manner as described above (step S74). Namely, after the period of time predetermined by the interval timer has elapsed (steps S75 and S76), the magnetic head 14 is moved radially inward (or outward) by one track (step S80). On the other hand, if it is determined that the track mode is not the video mode (step S73), the magnetic head 14 is immediately set to the next track (step S80).

This process is repeated, so that in the sequence of tracks on the magnetic disk 11, only tracks on which video signals are recorded are selected. Since the video signals are read out one after the other so that serial video playback takes place.

If the exposure correction switch 31 is operated again before the interval timer has detected the predetermined period so as to end the serial playback mode (step S77), the serial playback mode is triggered, the display "NORMAL" remains on and the display for continuous Recording operation is turned off (step S12 in Fig. 3A). Then the process proceeds to step S6. If the trigger switch 32 is operated again before the predetermined period of time has elapsed to thereby end playback (step S78), the continuous recording display is turned off (step S13) and playback is ended (steps S7 to S10).

If the selector switch 34 is operated during the serial video playback (step S79 in FIG. 3D), a serial audio mode is set. As a result, the display "A" is turned on and the display "V" on the LCD panel 23 is turned off (step S81) as described in FIG. 2H. Then, the track mode of the track to be reproduced is entered (step S82). If it is determined that the track mode is the audio mode (step S83), audio playback is started (step S84). When the audio reproduction of the track is completed (step S85), the magnetic head 14 is moved radially inward (or outward) by one track by the track motor 15 (step S89). At the same time, the track number displayed on the LCD panel 23 is increased by one.

When the track mode of the next track to be played is input (step S82) and it is determined that the track mode is an audio mode (step S83), the audio reproduction is carried out in the same manner as described above (step S84). After the audio reproduction is completed (step S85), the magnetic head 14 is moved radially inward (or outward) by one track (step S89). On the other hand, if it is determined that the track mode is not the audio mode (step S83), the magnetic head 14 is immediately set to the next track (step S89).

This process is repeated so that only tracks are selected from the series of tracks on the magnetic disk 11 , on which audio signals are recorded. In this way, the audio signals are read out serially and a successive reproduction of the audio signals is obtained.

If the exposure correction switch 31 is operated before the end of the audio reproduction so as to terminate the serial reproduction (step S86), the serial reproduction mode is released, the display "NORMAL" remains on and the display for the continuous recording operation is switched off (step S12 in Fig . 3A). The process then proceeds to step S6.

If the release switch 32 is operated before the audio playback ends, thereby ending the playback (step S87), the continuous recording operation display is turned off (step S13) and the playback is ended (steps S7 to S10).

If the selector switch 34 is operated during the serial audio reproduction (step S88 in FIG. 3D), the serial AV mode is set. As a result, the displays "A" and "V" on the LCD panel 23 are turned on (step S90) as shown in FIG. 2I. Then, a track mode of the track to be reproduced is entered (step S91). If it is determined that the track mode is the V mode (step S92), the audio playback is started (step S93). When the AV reproduction of the track pair is completed (step S94), the magnetic head 14 is moved radially inward (or outward) by two tracks by the track motor 15 (step S98). At the same time, the track number on the LCD field 23 is increased by two.

If the track mode of the next track to be played is entered (step S91) and it is determined that the track mode is the AV mode (step S92), the AV playback follows in the same manner as described above (step 93). When the reproduction of the audio signal on the track is finished (step S94), the magnetic head 14 is moved radially inward (or outward) by two tracks (step S98). If the track is not written in the AV mode (step S92), the magnetic head 14 is immediately set to the next track (step S98). Note that in step S98, the magnetic head 14 is moved by two tracks if the track mode is the AV mode.

This process is repeated so that from a number only track pairs are selected from tracks on which  a video signal and an audio signal are stored. The two each form a pair of video and audio signals (AV signals) are played back successively. To this Serial AV playback is performed in this way.

If the exposure correction switch 31 is operated before an audio signal is finished so that a serial playback termination command is issued (steps S94 and S95), the serial playback mode is triggered, the "NORMAL" indicator remains on and the indicator for continuous recording operation is deleted (step S12 in Fig. 3A). The process then proceeds to step S6.

If the trigger switch 32 is operated before the audio signal ends so that a command to stop playback is issued (step S96), the continuous recording display is turned off (step S13) and playback is stopped (steps S7 to S10 ).

It should be noted that in the embodiment described above, the continuous recording display, which denotes a continuous recording operation in the recording mode, is used to denote successive or serial reproduction. The indicators "A" and "V", which denote an audio signal and a video signal in the normal mode, are used to distinguish between the serial audio playback mode and the serial video playback mode. Separate displays can also be provided, which designate each mode separately, but such a structure with individual, separate display possibilities would enlarge the dimensions of the LCD panel 23 , which would be disadvantageous. As a result, the individual displays are preferably also used to designate other states, as described above.

Further, in the above-described embodiment, the exposure correction switch 31 is used in addition to its use for adjusting the exposure in the shooting operation to switch the serial reproduction operation. The selector switch 34 , in addition to being used to turn on various functions, is also used to switch the serial audio, video and AV playback modes. Separate switches could also be provided for these purposes, but the use of a switch for several processes reduces the number of parts required and the amount of electrical wiring. At the same time, a reduction in manufacturing costs and a compact structure of the arrangement will suffice.

Claims (7)

1. Still image video device, in which a recording medium ( 11 ) is arranged, which has a plurality of tracks on which video and audio signals can be stored, with a playback device ( 14 ) for playing back a signal stored on a predetermined track, a marking device for Name of the signal type of the signals recorded and reproduced on the recording medium ( 11 ) and a control device ( 21 ) for controlling the playback device ( 14 ), characterized by a command device for setting a single playback mode or a serial playback mode, three types of signals on the tracks

• - a video signal or
• - an audio signal or
• - A video signal and an audio signal on two tracks, the signals of which belong together are stored and

in serial playback mode, the playback device only traces of the same signal types in succession read. 2. Single-image video device according to claim 1, characterized by an actuating device ( 15, 16 ) for setting the playback device ( 14 ) to a predetermined track of the plate-shaped recording medium ( 11 ), a first switch for switching on a serial playback mode in which different tracks of the recording medium ( 11 ) are read and reproduced successively, and a second switch for designating the type of signals stored and reproduced on the recording medium ( 11 ), the control device ( 21 ) controlling the actuating device ( 15, 16 ) in such a way that when the serial playback mode is set by means of the first switch the playback device ( 14 ) is successively positioned on a plurality of tracks on which the signals of the type designated by the second switch are recorded. 3. Single-image video camera according to claim 2, characterized in that at least one of the two switches is also operated in a non-serial playback mode by reading each track of the record carrier ( 11 ) for itself in single playback mode. 4. Single image video camera according to claim 2 or 3, characterized characterized that the serial playback mode is cleared when the first switch during serial playback mode. 5. Single image video camera according to one of claims 2 to 4, characterized in that one of the signal type currently being played various signal type is played when the second switch pressed during serial playback mode becomes.   6. Single-image video device according to one of claims 1 to 5, characterized by a display device ( 22, 23 ) for displaying a predetermined display in the serial playback mode and a further predetermined display in a non-serial playback mode in which each track of the recording medium is read in the single playback mode .