JP2005198034A - Power adjustment method for portable audio/video playback device, and adjustment system therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To finish reproducing contents of multimedia fully without interrupting them halfway by detecting and calculating a residual quantity of a power unit. <P>SOLUTION: This method comprises: a step 1 for detecting power (a) of a power unit which conventionally resides; a step 2 for a reading audio/video multimedia file or data to calculate a time for reproducing (b) the file or the data; a step 3 for calculating an average power consumption (c) of a portable audio/video playback device reproducer; and a step 4 for decreasing an output amount of a visual signal or sound signal when it is decided that the conventional residual power (a) cannot finish reproducing the audio/video multimedia file or data fully. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a power adjustment method for a portable video / audio reproduction device and an adjustment system thereof, and in particular, when the power of the portable video / audio reproduction device is insufficient, all video / audio multimedia It relates to a file or data that has been reproduced.

  With the change of science and technology, video and audio enjoyment facilities are becoming more and more popular, and multimedia playback devices are already indispensable items in the lives of people. For example, home televisions, VCD / DVD playback devices, various stereo equipment, and the like all provide users with perfect hearing and visual enjoyment. However, with the advancement of science and technology, various types of video and audio enjoyment facilities are now becoming more and more compact, so other types of portable video and audio playback devices have been developed, and users can enjoy the outdoors. Still provided a way to enjoy multimedia files or data. However, this type of portable video / audio reproduction device has a limited power supply problem, and has a use-up side down.

  Conventionally, portable video and audio playback devices used in the market, for example, MP3 players and notebook type computers, all need to be equipped with a battery to supply the required power. Play files or data. However, in the case where there is no externally connected charging device, the amount of power stored in these batteries can supply only about two hours of power. For example, in the case of a notebook type computer, a unique power (battery In the case of watching movies recorded in the DVD format, the battery power is often consumed during movie viewing, so if you watch a movie halfway, you must stop This can result in a cramped situation where the user does not end up watching the movie continuously, leaving an unpleasant operating experience.

  In the prior art, other methods for improving the battery structure have been proposed to increase the battery power, or other energy-saving devices are attached to the portable video / audio playback device to consume electricity. Although some have been proposed to reduce the volume, these methods or devices still do not allow the user to completely watch or finish the film, and half of the video and audio multimedia files When the user can enjoy the device, the power of the playback device is cut off, leaving an unpleasant operation image for the user.

  As can be seen from the above description of the prior art, the conventional portable video / audio playback device loses its playback power until the film or music is often played back about half in a situation where it has only a unique power. The user cannot provide perfect hearing or visual enjoyment, and is inconvenient in use.

  The main object of the present invention is to provide a method for completely playing back a video / audio multimedia file or data before the portable video / audio playback device is turned off.

  To achieve the above object, the present invention detects the remaining power a of the power unit, reads the video / audio multimedia file or data, and calculates the playback time b of the file or data. Step 2, Step 3 for calculating the average power consumption c of the portable video / audio playback device, and if it is determined that the video / audio multimedia file or data has not been completely played back due to the remaining power a. And step 4 for reducing the output amount of the visual signal or the sound signal, and the operation reduces the electric consumption of the portable video / audio playback device, thereby reducing the electrical consumption of the portable video / audio playback device. The video / audio multimedia file or data can be played back before it is consumed. It characterized, to provide a power adjustment method and adjustment system of a portable video and audio reproduction apparatus.

  In order to further elucidate the features and technical contents of the present invention, the preferred embodiments of the present invention will be described in detail and specifically below with reference to the accompanying drawings. It goes without saying that the structure is merely possible embodiments of the present invention and does not limit the claimed scope of the present invention in a narrow sense.

  The present invention provides a kind of portable video / audio playback device power adjustment method and its adjustment system, which can be used for a complete video / audio media file or data before the portable video / audio playback device is powered off. Can finish playing. First, FIG. 1 is an explanatory view showing the structure of the portable video / audio reproduction device 10 of the present invention. In this embodiment, a notebook type computer will be described as an example. It is needless to say that can be applied to MP3 players and other various hand-held multimedia playback devices, and is not limited to this embodiment.

  The portable video / audio reproduction device 10 has a power unit 19, thereby providing the power required for the portable video / audio reproduction device 10, and the user is recording a video / audio multimedia file or data. When the optical disk 12 is placed in the video / audio playback unit 11, the video / audio playback unit 11 is controlled by the processor 13 disposed in the portable video / audio playback device 10, and the video / audio multimedia file or data is read. In the middle, the processor 13 decodes the video / audio multimedia file or data and then obtains the visual signal (video signal) and the sound signal (audio signal), respectively, and then the respective visual signal and sound signaler. It was sent to the visual signal unit 17 and sound-signal unit 15, and executes the next processing, to reproduce the visual signal and sound signal. In the present embodiment, a VCD / DVD playback device can be used as the video / audio playback unit 101, and a battery can be used as the power unit 19.

  FIG. 2 is a block diagram showing an electric circuit of the portable video / audio reproduction device 100 of the present invention, in which the power unit 109 includes the video / audio reproduction unit 101, the processor 103, and the audio effect unit 105, respectively. , Connected to the visual signal unit 107, providing each unit with the power required for work, and detecting the conventional remaining power a of the power unit 109 after a predetermined time by the processor 103, It can be set to detect whether the conventional power of the power unit 109 is full or insufficient, and to detect the time interval once every three or five minutes.

  A processor 103 is arranged inside the portable video / audio reproduction device 100, which is connected to a video / audio reproduction unit 101, an audio effect unit 105, a visual signal unit 107, and a power unit 109, respectively. The time b (or surplus time) required to reproduce the video / audio multimedia file or data can be immediately calculated by connecting the processor 103 and the video / audio reproduction unit 101. At the same time, the processor 103 also The average power consumption c per hundred seconds of the portable video / audio playback device 100 is calculated to determine whether the conventional surplus power a has completely played back the video / audio multimedia file or data. it can.

  When the value obtained by dividing the surplus power a calculated by the processor 103 by the average electricity consumption c is smaller than the reproduction time b, a signal command is issued to the sound effect unit 105 and the visual signal unit 107. Thereby, the output amount of the visual signal and the sound signal of the two units (the sound effect unit 105 and the visual signal unit 107) is reduced. First, the signal command is received by connecting a certain leg of the sound effect unit 105 to the processor 103, thereby reducing the sound signal output amount of the sound effect unit 105, for example, outputting the sound effect unit 105. The power consumption of the portable video / audio reproduction device 100 is reduced by reducing the volume of sound and the special stereo effect. Similarly, by connecting a certain leg of the visual signal unit 107 to the processor 103, the brightness, contrast, resolution, special reproduction effect, etc. output from the visual signal unit 107 are lowered to reduce the power unit 109. Extend the power supply time.

  However, the processor 103 can also reduce and adjust the coding rate with the video / audio multimedia file or the video / audio of the data b, and its purpose is to reduce the amount of electricity consumed by the portable video / audio reproduction device 100. When discussing from the technology, the audio sampling rate is approximately 44.1 KHz or higher, and the video compression ratio is compressed or decoded according to the MPEG4 format, among which the audio sampling rate and the video compression ratio When the video / audio decoding rate is adjusted to be lowered by reducing the power consumption time, the power supply time of the power unit 109 can be increased, so that the excess power consumption time of the power unit 109 can be made longer than the reproduction time b. .

  If the system automatically reduces the output amount of visual and sound signals, the processor 103 still waits for a certain amount of time to determine if conventional power can finish playing the video / audio multimedia file or data Since the output amount is already changed, the values of the average electricity consumption amount c and the reproduction time b are also changed accordingly, and these change amounts become the fluctuation reproduction time Δb and the fluctuation average electricity consumption amount Δc. At this time, the processor 103 again calculates whether a / (c−Δc) is equal to or greater than (b−Δb), and if a / (c−Δc) is greater than (b−Δb), the system Stops the output of low visual and sound signals.

  On the other hand, if a / (c−Δc) is smaller than (b−Δb), further reducing the electricity consumption by adjusting another output value, for example, reducing the frequency of the processor 103 or Switch off special playback effects that may increase consumption. If the request still cannot be satisfied, the playback speed of the video / audio playback unit 101 is accelerated, thereby shortening the playback time of the video / audio multimedia file or data, so that the portable video / audio playback device 100 can be used. The video / audio multimedia file or data can be completely played back before the electricity is consumed. However, it is assumed that the respective reduced output amounts should be kept above a predetermined adjustment limit and will be unacceptable to the user if the quality of the visual and sound signals deteriorates. This is because that.

  FIG. 3 is a block flowchart of the flow of the present invention. As shown in FIG. 3, first, the processor 103 detects the conventional surplus power a of the power unit 109 (step S201). Thereafter, the video / audio multimedia file or data is read, and the processor 103 calculates the reproduction time b of the file or data (step S203). Further, the average electric consumption c of the portable video / audio reproduction device 100 is calculated (step S205). Finally, when it is calculated that the video / audio multimedia file or data is not completely reproduced by the remaining power a, the output amount of the visual signal or the sound signal is reduced (step S207). As a result, the power consumption of the portable video / audio playback device 100 is reduced, so that the portable video / audio playback device 100 finishes playing the video / audio multimedia file or data before the power is consumed.

  As described above, the power adjustment method and the adjustment system of the portable video / audio reproduction device 100 according to the present invention can eliminate unnecessary electric consumption, and the portable video / audio reproduction device 100 is completely consumed of power. The audio / video media file or data can be completely played back before being played, and when the audio / video multimedia file or data is played to about half, the power is cut off, It is possible to prevent the operation from leaving an unpleasant image.

  Further, what has been specifically described above is merely a preferred embodiment in which the present invention can be implemented, and all modified embodiments that fall within the scope of the claims of the present invention are also included in the present invention. Needless to say, it should be delivered within the scope of the claim.

It is explanatory drawing which shows the structure of a portable audio-video reproduction apparatus. It is a block diagram which shows the electric circuit of the portable audio-video reproduction apparatus of this invention. It is a flowchart which shows the flow of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 100 Portable audio / video reproduction apparatus 11, 101 Audio / video reproduction unit 12 Optical disk 13, 103 Processor 15 Sound signal unit 17, 107 Visual signal unit 19, 109 Power unit 105 Audio effect unit

Claims (19)

In a power adjustment method for a portable video / audio reproduction device that supplies power to the portable video / audio reproduction device by using a power unit,
Step 1 of detecting the conventional remaining power a of the power unit;
Reading the video / audio multimedia file or data and calculating the playback time b of the file or data;
Step 3 for calculating the average electricity consumption c of the portable video / audio reproduction device;
Step 4 for reducing the output amount of a visual signal or a sound signal when it is determined that the video / audio multimedia file or data is not completely played back by the conventional remaining power a. A power adjustment method for a portable video / audio reproduction device. In step 4 of reducing the output amount of the visual signal or sound signal,
Reducing visual signal brightness, contrast, resolution, etc .;
Reducing the volume and stereo effect of the sound signal,
2. The power adjustment method for a portable video / audio reproduction device according to claim 1, further comprising a step of reducing a video / audio decoding rate.   3. The power adjustment method for a portable video / audio reproduction device according to claim 2, wherein the step of reducing the coding rate with the video / audio refers to reducing the video compression ratio or the audio sampling rate.   2. The portable video / audio reproduction device according to claim 1, wherein the step of reducing the output amount of the visual signal or the sound signal is that the decreasing output amount is set to a predetermined limit value or more. Power adjustment method.   The step of reducing the output amount of the visual signal or the sound signal further includes a step of switching off a special reproduction effect of the portable video / audio device. A power adjustment method for a portable video / audio reproduction device.   The portable video according to claim 1, wherein the step of reducing the output amount of the visual signal or the sound signal further includes a step of accelerating a reproduction speed of the portable video / audio device. A method for adjusting the power of an audio playback device.   2. The portable video / audio reproduction according to claim 1, wherein the step of reducing the output amount of the visual signal or the sound signal includes an operation that satisfies a condition of a / c <b. Device power adjustment method.   2. The method of claim 1, wherein the step of detecting the conventional remaining power a is performed once at a predetermined time interval.   9. The power adjustment method for a portable video / audio reproduction device according to claim 8, wherein the predetermined time interval refers to performing detection and calculation once every three minutes or five minutes.   9. The portable video / audio reproduction device according to claim 8, wherein the calculation is performed at intervals of the predetermined time, and the calculation is performed based on the variation reproduction time Δb and the variation average electricity consumption Δc. Power adjustment method.   The step of reducing the amount of output of the visual signal or sound signal includes the step of reducing the visual signal or sound signal when a / (c−Δc) is equal to or greater than (b−Δb). 2. The power adjustment method for a portable video / audio reproduction device according to claim 1, wherein the reduction of the output amount is stopped. In a power adjustment system of a portable video / audio reproduction device that supplies power to the portable video / audio reproduction device by using a power unit,
A video / audio playback unit that reads video / audio multimedia files or data;
A visual signal unit that outputs the amount of visual signal output;
A sound effect unit that outputs the amount of sound signal output;
The power unit, the visual signal unit, the audio effect unit, and the video / audio reproduction unit are connected to detect the remaining power of the power unit and to reproduce the video / audio multimedia file or data. And calculating the average power consumption of the power unit, in the case of power shortage, reducing the visual signal and third-degree signal output of the visual signal unit and the sound unit. A power adjustment system for a portable video / audio reproduction device.   The leg of the visual signal unit is connected to the processor and receives a signal command transmitted by the processor, thereby adjusting an output amount of the visual signal unit. The power adjustment system of the portable audio-video reproduction apparatus as described.   The leg of the sound signal unit is connected to the processor and receives a signal command transmitted by the processor, thereby adjusting an output amount of the sound signal unit. The power adjustment system of the portable audio-video reproduction apparatus as described.   The portable processor according to claim 12, wherein the processor immediately calculates the remaining power of the power unit, the average electricity consumption, and the playback time of the video / audio multimedia file or data. Power adjustment system for audiovisual playback equipment.   The power adjustment system for a portable video / audio reproduction device according to claim 12, wherein a battery is used as the power unit.   13. The power adjustment system for a portable video / audio reproduction device according to claim 12, wherein the output amount of the visual signal includes brightness, contrast, resolution, and the like.   13. The power adjustment system for a portable video / audio reproduction device according to claim 12, wherein the output amount of the sound signal includes a volume, a stereo effect, and the like.   13. The power adjustment system for a portable video / audio reproduction device according to claim 12, wherein the video / audio reproduction unit shortens the reproduction time of the video / audio multimedia file or data by accelerating the reproduction speed. .

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