The present application claims priority from Japanese application JP2007-018670 filed on Jan. 30, 2007, the content of which is hereby incorporated by reference into this application.
The present invention relates to a visual and audio data recording and reproducing apparatus for recording and reproducing visual and audio data on and from a recording medium.
A technique disclosed in JP-A-2004-241093 is available for reducing power consumption in a disk drive such as a HDD (Hard Disc Drive) and an optical disk drive. In the disclosed technique, a data processor controls the power consumption mode of a HDD in accordance with a control state of the HDD.
Power saving control in a camera using a combined HDD/optical disc drive is disclosed in JP-A-2006-286034, according to which during normal recording operated with a battery, only the HDD drive is operated whereas operation of the optical disc drive is stopped.
A technique of recording on a HD (Hard Disc) and an optical disc is available as disclosed in JP-A-2003-101915. The literature JP-A-2003-101915 gives, in paragraph (0034), a description “With a HDD21 placed in recording operation condition, a disc drive 20 is controlled to a recording operation condition as shown at (c) in
Recently, widespread use of a recorder and a camera each mounted with a HDD and a DVD (Digital Versatile Disc) drive has been prevailing. In general, the HD has a large capacity but is unexchangeable, whereas the DVD has a small capacity but is exchangeable. Long time recording is possible with the HDD but because of an upper limit of the recording capacity, data needs to be dubbed to an optical disc such as a DVD.
Further, a camera mounted with a HDD and a DVD drive can be used in such a manner that an image is first recorded on a HD and thereafter, the image is dubbed to a DVD. In this manner of use, however, much time is consumed for the sake of dubbing.
Data being dubbed to the DVD will sometimes overflow. Then, highly efficient dubbing has been tasked.
To solve the above problem, according to the present invention, when input information applied externally is recorded on both of first and second recording media, recording on the first and second recoding media is performed intermittently or recording on the second recoding medium is performed continuously at a low speed.
Further, when the residual amount of the second recording medium becomes slight as recording on both the first and second recording media proceeds, recording on the first recording medium is kept up, recording on the second recording medium is stopped while holding a position indicating how far recording on the second recording medium has proceeded and after the second recording medium has been exchanged, dubbing to a replaced recording medium is started from the stop position. Even during mere dubbing, recording on the second recording medium is stopped while holding a position indicating how far recording on the second recording medium has proceeded and after exchange of the second recording medium, dubbing to a replaced second recording medium is started from the stop position.
When visual and audio data is recorded, the degree of easy-to-use capability can be improved and the degree for user's convenience sake can be promoted.
Other objects, features and advantages of the invention will become apparent from the following description of the embodiments of the invention taken in conjunction with the accompanying drawings.
A visual and audio data recording and reproducing apparatus according to the present invention will now be described with reference to the accompanying drawings.
The construction of a visual and audio data recording and reproducing apparatus 100 will be described by way of example of a camera by making reference to
An input means 101 includes a pick-up device constructed of a lens and CMOS's (Complementary Metal Oxide Semiconductors) and a signal processing circuit for encoding an electric signal obtained from the pick-up device in conformity with a recording format of a HD or an optical disc.
In a first temporary storage medium 103, visual and audio data inputted through the input means 101 is temporarily held. Used as the storage medium is such a memory as a RAM (Random Access Memory). The first temporary storage medium will hereinafter be labeled memory 103.
Likewise, a second temporary storage medium 104 holds temporarily the visual and audio data inputted through the input means 101, and a RAM, for example, is used as the storage medium 104. Hereinafter, the second temporary storage medium will be labeled memory 104.
A first recording means 105 records on a first recording medium 108 the visual and audio data held by the memory 103. For example, a HDD is used as the first recording means 105 and hereinafter, the first recording means and the first recording medium will be labeled HDD and HD, respectively.
A second recording means 106 records on a second recording medium 109 the data held by the memory 104. A DVD or an optical disc of blue-ray is used as the second recording medium 109 and for example, the second recording means and the second recording medium will hereinafter be labeled DVD drive and DVD, respectively.
In
For outputting data, an output means 102 includes a signal processing circuit for decoding visual and audio data, an interface for transmission of signals, a display for displaying visual data and a loudspeaker for outputting audio data.
Referring to
When visual and audio data comes to the memory 103 via the input means 101, the data holding amount of memory 103 increases during a time interval of from T1 to T2 as shown at A in
As soon as the data holding amount of memory 103 reaches an upper limit value M2 (time T2), the HDD 105 starts recording as shown at B in
Operation during reproduction is illustrated at C and D in
When data held by the HD 108 is reproduced, the data holding amount of the memory increases from M3 to M4 starting from time T7 and ending in time T8 as shown at C in
The operation which proceeds repeating the recording and pause or the reproduction and pause is called intermittent recording or intermittent reproduction, which is generally termed an intermittent operation.
The memory 104 and DVD drive 106 perform an intermittent operation similarly.
The present embodiment is featured in that visual and audio data inputted via the input means 101 is recorded on the HD and DVD and this feature will now be described with reference to
As shown at B in
When the memory 103 comes subsequently to the upper limit value (time T4) as shown at A in
As described above, the HDD 105 and DVD drive 106 are so controlled by the control means 107 as to perform recording alternately, so that recording on the HD and on the DVD can be executed, as though the execution were in parallel, with electric power level and power consumption similar to those for usual recording on either of the recoding media. Through this, the same visual and audio data can be recorded on the HD and DVD and time and labor, required when dubbing copy to the DVD is performed after completion of recording on the HD, can be dispensed with, giving rise to an advantage that efficient dubbing can be performed.
Recording on the HD 108 has been described herein as starting precedently but recording on the DVD 109 may start earlier. If the electric energy of a battery has an appreciable margin, the period of recording on the HD may overlap that of recoding on the DVD. Further, by causing the speed of recording on the recording media to be so controlled as to be slow, recoding on the DVD can be executed continuously.
Referring to
As shown at A in
Subsequently, as shown at A in
Even within a period during which the HDD 105 performs reproduction or makes a pause, the visual and audio data from the input means 101 is stored in the memory 103 and when the upper limit value 401 is reached (time T4), recording on the HD 108 is started. Subsequently, the intermittent operation proceeds in a similar way.
To add, at the time of switching between recording end and reproduction start in association with the HD 108 (times T2, T5 and T8), at the time of switching between end of reproduction from the HD 108 and start of recording on the DVD 109 (times T3, T6 and T9) and at the time of switching between end of recording on the DVD 109 and start of recording on the HD 108 (times T4 and T7), there may be a period during which both the HDD 105 and the DVD drive 106 are brought into a pause condition. Further, power consumption for recording by the HDD may differ from that for reproduction thereby. Like embodiment 1, if the battery and electric energy are sufficient for capacity, the recording period on the HD 108 may overlap the recording period on the DVD 109 and besides, the reproduction period from the HD 108 may overlap the recording period on the DVD 109. In addition, recording on the DVD 109 may be executed continuously without pause. To add, after dubbing has been completed, operation may proceed to recording on both the HD 108 and the DVD 109 as in the case of embodiment 1.
Another example of dubbing in the present embodiment will now be described with reference to
First visual and audio data from the HD 108 is stored in the memory 104 (times T2 to T3) and when the data holding amount of the memory reaches an upper limit value 511, recording on the DVD 109 is started (time T3). Thereafter, the data holding amount of the memory 104 is increased and deceased repeatedly in response to reproduction from the HD 108 and recording on the DVD 109 but the range of from upper limit value 511 to lower limit value 512 is not exceeded. No pause period is provided for recording on the DVD 109 and continuous recording proceeds.
It is supposed that the average recording speed of recording on the DVD 109 is faster than that of recording on the HD 108. Then, dubbing can end earlier and operation can proceed to recording on both the HD 108 and the DVD 109 as in the case of embodiment 1.
The average recording speed will be described herein by making reference to
The average recording speed is defined by division of the recording amount by the sum of recording time and pause time. For the same recording time, the average recording speed can be increased by making the recording speed per unit time higher. Conversely, for the same recording speed per unit time, the average recording speed can be faster by making the recording time longer.
From the standpoint of power consumption, the former is preferable. The present embodiment is featured in that the second average recording speed 114 is made to be faster than the first average recording speed 113. It will be appreciated that the second average recording speed 114 may be faster than a third average recording speed 115 on the DVD 109 when visual and audio data inputted via the input means 101 is recorded on both the HD 108 and the DVD 109.
Next, an example where recording on the DVD 109 is paused and the DVD is exchanged will be described with reference to
Visual and audio data inputted via the input means 101 is stored in the memories 103 and 104 and intermittent recording is carried out as shown at A and B in
As shown at A in
When visual and audio data inputted via the input means 101 is intermittently recorded on the HD 108 through m−2, m−1, m . . . of recording serial number 621 as shown at C in
After the n+1 event of reproduction serial number 622, the same visual and audio data as those developing after an n+1 event of recording serial number 601 prevail. In this manner, the visual and audio data which will be recorded after n+1 of recording serial number 601 will be reproduced starting from n+1 of reproduction serial number 622 and sequentially recorded starting from n+1 of recording serial number 631. In this case, recording may be executed starting from either a number smaller than n+1 of recording serial number 631 or a number larger than n+1 of recording serial number 631. At a moment that operations at C and D in
In addition to the instance where the DVD is exchanged during recording on both the HD and DVD as in the present embodiment, an instance may be adopted in which recording on the DVD is paused either in the course of dubbing from the HD to the DVD during recording on only the HD or in the course of only dubbing from the HD to the DVD and then, as in the case of the present embodiment, data as to how far reproduction from the HD has proceeded or how far recording on the DVD has proceeded is held, so that the exchange of the DVD can be achieved even during a so-called dubbing by utilizing the present embodiment in such a way that the pause position is used as a dubbing start position after the DVD exchange.
Reverting to
In the visual and audio data recording and reproducing apparatus 100 operating with the battery 111, recording on both the HD 108 and the DVD 109 as in embodiment 1 is executed and the control means 107 monitors the accumulation amount of battery 111 so as to cause the output means 102 to inform the user of switchover of power supply from the battery 111 to the external power supply 112 in the event that the accumulation amount falls below a predetermined level. An example of a display by the output means 102 is illustrated in
Also, in the visual and audio data recording and reproducing apparatus 100 operating with the battery 111, recording on both the HD 108 and the DVD 109 as in embodiment 1 is executed, the control means 107 monitors the accumulation amount of battery 111 so as to pause recording on the DVD 109 when the accumulation amount falls below a predetermined level. After the pause, recording on the HD 108 continues and recording on the DVD 109 stops.
Further, in the visual and audio data recording and reproducing apparatus 100 operating with the battery 111, dubbing from the HD 108 to the DVD 109 as in embodiment 2 is executed and the control means 107 monitors the accumulation amount of battery 111 so as to pause recording on the DVD 106 when the accumulation amount falls below a certain level.
Further, the control means 107 controls the battery and the external power supply so as to materialize continuous recording and duplex intermittent recording as well on the HDD 105 and the DVD drive 106 as in embodiments 1 and 2.
In the foregoing embodiments 1 to 3, the memories 103 and 104 may be merged into a single memory. Both the memory 103 and the memory 104 may be incorporated in a single memory or for example, areas may be put together and data may also be put together so that a pointer management as to how far recording of data on either HD or DVD has proceeded may be practiced.
According to the foregoing embodiments of the invention, visual and audio data can be recorded on both the HD and the optical disc such as DVD and therefore recording on the optical disc has been completed when recording ends, thus ensuring that in the case of a video camera, a mountable and dismountable optical disc transcribing persons of a family who attend together can be delivered to the family on the spot. For example, in the case of a recorder, a program not protected by copyright can be recorded as necessary on a HD and an optical disc as in the case of the aforementioned video camera and the dismountable optical disc can at once be utilized for a portable device, for instance. Further, recording on the HD and the DVD can be executed in intermittent operation and in addition, even continuous operation of continuous recording can be carried out at a low recording speed and a low power level, for instance.
Further, when dubbing data held in a HD to an optical disc during recording on the HD, recording speed of dubbing can be made faster than speed of recording on the HD in order that dubbing can gradually come up with recording on the HD and dubbing can end early.
Even when, for example, the recording capacity of the optical disc is filled up or the residual amount of the optical disc becomes slight on account of the high dubbing speed, causing recording on the optical disc to be paused, the pause position is memorized so that dubbing can be started from the pause position immediately after optical disc exchange and can overtake recording on the HD. After the dubbing ends, the same data image signal can be recorded on both the HD and the DVD. The disc exchange during the dubbing can be carried out by exchanging the disc during recording of the same data image signal on both the HD and the DVD or by performing mere disc exchange during dubbing as usual.
It should be further understood by those skilled in the art that although the foregoing description has been made on embodiments of the invention, the invention is not limited thereto and various changes and modifications may be made without departing from the spirit of the invention and the scope of the appended claims.
Number | Date | Country | Kind |
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2007-018670 | Jan 2007 | JP | national |