JP2006245985A - Method and device for processing information, and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information processing device capable of preventing occurrence of mismatching between video and audio by flexibly coping with video audio sources, even if the video audio sources diversify in the future. <P>SOLUTION: An information processing device S processes video information and audio information output from an external video audio source for display and sound emission. It comprises a plurality of audio input terminals (A1, A2, and A3) in which audio signals Sain1, Sain2, and Sain3 coming from a plurality of video audio source (D, V, and P) of different kinds are separately input for each kind, a switch SW2 for selecting any one of audio signals input through the audio input terminals (A1, A2, and A3), and a delay unit 1 for delaying the audio signal using a delay time corresponding to the kind of video audio source with a selected audio signal. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present application belongs to a technical field of an information processing apparatus, an information processing method, and a display apparatus, and more specifically, processing for a sound signal output while being temporally consistent with a video signal having corresponding contents. The present invention belongs to the technical field of an information processing apparatus and an information processing method for performing information processing, and a display apparatus including the information processing apparatus.

  In recent years, with the improvement in the quality of video and audio, for example, it has become common to output a movie played from an optical disc in an optical disc player together with the audio using a large screen such as a PDP (Plasma Display Panel).

  Here, in general, video information is displayed due to a difference in decoding speed due to a difference in encoding / decoding format even for video information and audio information constituting a movie reproduced from the one optical disc. There may be a difference between the time required for decoding to a state where output is possible and the time required for decoding the audio information to a state where sound can be emitted by the speaker. When such a time difference occurs, the video displayed as a result and the sound to be emitted do not match in time, and normal reproduction cannot be performed.

Therefore, as a conventional technique for eliminating such a temporal inconsistency, there is a technique described in the following Patent Document 1 by the present applicant, for example.
JP 2001-36869 A

  Here, in the invention disclosed in Patent Document 1, an input signal as a video signal is a normal video signal or a material originally having a number of frames for a movie is used for a television apparatus. When the video signal obtained by converting to the number of images per unit time (so-called telecine conversion) is specified and the video signal obtained by telecine conversion is played back, it is played back simultaneously. The audio signal to be delayed is delayed in units of frames, and video and audio are matched.

  However, according to the prior art disclosed in Patent Document 1 described above, only the video signal obtained by the telecine conversion and the normal video signal are targeted, and the video source or the sound source (hereinafter simply referred to as video) as in the current situation. If the sound source is diversified, it is impossible to cope with it. The prior art is not premised on the existence of such diversified video sound sources.

  Furthermore, since the delay time in the delay processing to be applied to the audio signal is also fixed in a single way, the delay processing is performed using the fixed delay time regardless of the input of any audio signal. As a result, when the video signal and the audio signal are diversified, there is a problem that the difference between the video information and the audio information may be widened.

  Therefore, the present application has been made in view of the above-mentioned problems, and an example of the purpose is that even when video sound sources are diversified in the future, video and audio can be flexibly supported by each video sound source. An information processing apparatus and an information processing method capable of preventing occurrence of inconsistency, an information processing program, and an information recording medium on which the information processing program is recorded so as to be readable by a computer are provided.

  In order to solve the above problems, the invention according to claim 1 is an information processing apparatus that processes video information and sound information output from an external video and audio output apparatus for display and sound emission, respectively. The sound signals output from a plurality of video and audio output devices of different types are input via a plurality of sound input terminals that are input separately for each type and the sound input terminals. Selection means such as a switch for selecting any one of the sound signals and outputting the selected sound signal, and the video and sound output from which the sound signal selected by the selection means and output as the selected sound signal is output Delay means such as a delay unit that delays the selected sound signal using a delay time set in advance corresponding to the type of device and outputs the selected sound signal as a delayed sound signal for sound emission.

  In order to solve the above-described problem, the invention described in claim 6 is used when the information processing apparatus according to any one of claims 1 to 5 and the output delayed sound signal are delayed. Display means such as a display for displaying a video corresponding to the video information output from the video / audio output device of a type corresponding to the delay time, and a sound corresponding to the output delayed sound signal. Speaker means such as a speaker for emitting sound.

  In order to solve the above-described problems, the invention described in claim 7 is an information processing method for processing video information and sound information output from an external video / audio output device for display and sound emission, respectively. In the information processing method executed in the information processing apparatus having a plurality of sound input terminals to which the sound signals output from the plurality of video and sound output devices of different types are input separately for each type A selection step of selecting any one of the sound signals input via each of the sound input terminals and outputting the selected sound signal as a selection sound signal; and the sound signal selected and output as the selection sound signal in the selection step A delay step of delaying the selected sound signal using a delay time set in advance corresponding to the type of the video and audio output device from which the sound is output and outputting the delayed sound signal for sound emission. .

  Next, the best mode for carrying out the present application will be described with reference to the drawings. In the embodiment described below, a display device that receives video signals or audio signals from a plurality of types of video sound sources and performs video display or audio output (sound emission) corresponding to these video signals or audio signals. It is embodiment when this application is applied with respect to.

  FIG. 1 is a block diagram showing a schematic configuration of the display device according to the embodiment.

  As shown in FIG. 1, the display device S according to the embodiment is a display device including three input systems, and each displays or emits a video signal and an audio signal input from each input system. It has a function to make it.

  Further, in the embodiment described below, a case where the optical disc player D, the video tape recorder V, and the computer P are individually connected to the display device S as the above-described video sound source will be described.

  That is, the optical disc player D connected to the display device S according to the embodiment reproduces the video information and audio information corresponding to the movie from the optical disc on which the movie is recorded, and the reproduced video information and A video signal and an audio signal respectively corresponding to the audio information are separately output to the display device S. Further, the video tape recorder V connected to the display device S according to the embodiment reproduces the video information and audio information corresponding to the movie etc. from the video tape on which the movie etc. is recorded, and the reproduced video The video signal and the audio signal corresponding to the information and the audio information, respectively, are output separately to the display device S. Furthermore, the computer P connected to the display device S according to the embodiment reproduces video information and audio information corresponding to a movie or the like acquired through the Internet or the like using the computer P, for example. The video signal and the audio signal respectively corresponding to the video information and the audio information are output separately to the display device S.

  As shown in FIG. 1, the display device S according to the embodiment includes a video input terminal V1 to which the video signal Svin1 from the optical disc player D is input and a video to which the video signal Svin2 from the video tape recorder V is input. An input terminal V2, a video input terminal V3 to which the video signal Svin3 from the computer P is input, an audio input terminal A1 to which the audio signal Sain1 from the optical disc player D is input, and an audio from the video tape recorder V An audio input terminal A2 to which the signal Sain2 is input and an audio input terminal A3 to which the audio signal Sain3 from the computer P is input are provided.

  In addition, the display device S according to the embodiment includes a switch SW1 and a switch SW2 as a selection unit, a delay unit 1 as a delay unit, a volume / tone unit 2, an amplifier unit 3, and a speaker unit. Storage unit including a speaker 4, an image processing unit 5, a display 6 as a display unit, a CPU 7 as a control unit, an operation display unit 8, an operation unit 9, and a nonvolatile memory area and a volatile memory area And a memory 10 as shown in FIG.

  Here, in the nonvolatile memory area in the memory 10, when the video signal Svin1 and the audio signal Sain1 are respectively input from the optical disc player D, a delay time used for delay processing to be performed on the audio signal Sain1. Delay time information 10A indicating (for example, 500 milliseconds in the case of FIG. 1) is stored together with identification information F1 for identifying the video input terminal V1 and the audio input terminal A1 after being predetermined. . Similarly, in the nonvolatile memory area, when the video signal Svin2 and the audio signal Sain2 are respectively input from the video tape recorder V, a delay time used for delay processing to be performed on the audio signal Sain2 is used. (For example, 450 milliseconds in the case shown in FIG. 1) is stored as delay time information 10B together with identification information F2 for identifying the video input terminal V2 and the audio input terminal A2 after being determined in advance. Further, when the video signal Svin3 and the audio signal Sain3 are respectively input from the computer P, a delay time used for delay processing to be performed on the audio signal Sain3 (for example, 150 milliseconds in the case shown in FIG. 1). Delay time information together with the identification information F3 for identifying the video input terminal V3 and the audio input terminal A3. It is stored as 10C.

  Next, the operation will be described.

  First, any one of the optical disc player D, the video tape recorder V, and the computer P is a corresponding video input terminal V1 as a video sound source that displays video and outputs audio using the display device S. And the audio input terminal A1, the video input terminal V2, and the audio input terminal A2, or the video input terminal V3 and the audio input terminal A3. Here, which video sound source is connected to which input terminal is instructed by the user in the operation unit 9, and an instruction signal Sop corresponding to the instruction content is output from the operation unit 9 to the CPU 7. The CPU 7 recognizes which video sound source is connected to which input terminal.

  Next, the CPU 10 which has recognized which video sound source is connected to which input terminal outputs control signals Svsc and Sasc to the switches SW1 and SW2, respectively, and switches the switches SW1 and SW2 to any one of them. Switch to the input terminal to which the video sound source is connected.

  Accordingly, the switches SW1 and SW2 output the switched video signal and audio signal to the image processing unit 5 and the delay unit 1 as the video signal Svsw and the audio signal Sasw, respectively.

  Next, the image processing unit 5 to which the video signal Svsw has been input is based on a control signal Svcc from the CPU 7 in accordance with an image decoding method defined in advance for the video signal Svsw. Decoding processing is performed and the decoded image signal Svout is output to the display 6.

  As a result, the display 6 displays an image included in the decoded image signal Svout.

  On the other hand, the delay unit 1 to which the audio signal Sasw is input receives from the CPU 7 the delay time information stored in the nonvolatile memory area of the memory 10 corresponding to the audio signal Sasw (that is, the delay time information). 10A to 10C, the delay time information corresponding to the video sound source corresponding to the audio signal Sasw) is output in advance as the control signal Sdc, and the delay time indicated by the delay time information is set in the delay unit 1. Yes.

  Therefore, the CPU 7 reads out the delay time information corresponding to the video sound source recognized based on the instruction signal Sop from the operation unit 9 from the memory 10 as the memory signal Sm, and reads this as the control signal Sdc to the delay unit 1. Output.

  Next, the delay unit 1 delays the audio signal Sasw by the preset delay time and outputs the delayed audio signal Sda to the volume / tone unit 2.

  The volume / tone unit 2 adjusts the sound quality and the like in the delayed audio signal Sda based on the control signal Svc from the CPU 7 and outputs the adjusted audio signal Sva to the amplifier unit 3.

  Thus, the amplifier unit 3 amplifies the adjusted audio signal Sva with a preset amplification factor based on the control signal Sac from the CPU 7 and outputs the amplified audio signal Sout to the speaker 4 as an amplified audio signal Saout.

  The speaker 4 emits a sound corresponding to the amplified audio signal Saout.

  Here, when the CPU 7 recognizes that the video sound source has been switched on the basis of the instruction signal Sop from the operation unit 9, the CPU 7 selects the delay time information 10A to 10C corresponding to the switched video sound source. Any one of them is read from the memory 10 and output to the delay unit 1 as the control signal Sdc, so that the corresponding delay time is set in the delay unit 1.

  The matching between the output timing of the decoded image signal Svout itself from the image processing unit 5 and the output timing of the amplified audio signal Saout itself corresponding to the decoded image signal Svout from the amplifier unit 3 is a control signal from the CPU 7. Controlled by Sdc.

  Further, in the series of operations described above, the CPU 7 performs overall control of the respective constituent members based on the instruction signal Sop from the operation unit 9 so that the operation indicated by the instruction signal Sop is realized.

  At this time, information necessary for the overall control is temporarily stored in the volatile memory area of the memory 10 as the memory signal Sm, and then read again as the memory signal Sm as necessary. To be served.

  The operation state of the display device S described above is displayed on the operation display unit 8 including a liquid crystal display or the like based on the display signal Sdp from the CPU 7.

  As described above, according to the operation of the display device S according to the embodiment, based on the selection of any of the audio input terminals A1 to A3, any of the audio signals Sain1 to Sain1 input through the audio input terminal. The audio signal Sasw corresponding to one of the input audio signals Sain1 to Sain3 is delayed using a delay time set in advance according to the type of the video sound source that is the output source of Sain3. The audio signal Sasw can be appropriately delayed according to the type of the video sound source.

  Accordingly, it is possible to effectively prevent the occurrence of time mismatch between video and sound output from the same video sound source for a wide range of video sound sources of this type including the case where the types are expanded in the future.

  Further, when delaying the audio signal Sasw, any one of the delay time information 10A to 10C stored in advance for each type according to the type of the video sound source is read and used. Thus, the audio signal Sasw can be accurately delayed.

  Furthermore, since the user can arbitrarily set the delay time for each type of video sound source for each type, the degree of freedom of sound signal delay can be further increased.

  Further, by displaying the video signal Svsw output together with the audio signal Sasw from the video sound source from which the delayed audio signal Sasw is output, in parallel with the delayed audio signal Sasw, the video signal is displayed. The video based on Svsw and the sound based on the delayed audio signal Sasw can be displayed and sounded in a more accurate manner in time.

  In the above-described embodiment, the delay time in the delay time information 10A to 120C stored in the memory 10 is set depending only on the type of the corresponding video sound source. The audio signal Sasw can be delayed by using a delay time arbitrarily changed by the user from the delay time depending on.

  Further, the number of input systems as the information processing apparatus S is not limited to three as described above, and may be four or more.

  Furthermore, the above-mentioned program indicating the operation of the CPU 7 is recorded on an information recording medium such as a flexible disk or a hard disk, or is acquired and recorded via the Internet or the like, and is read and executed by a general-purpose computer. By doing so, the computer can be used as the CPU 7.

It is a block diagram which shows schematic structure of the display apparatus of embodiment.

Explanation of symbols

1 Delay unit 7 CPU
9 Operation section 10 Memory 10A, 10B, 10C Delay time information D Optical disc player V Video tape recorder P Computer F1, F2, F3 Identification information V1, V2, V3 Video input terminals A1, A2, A3 Audio input terminals

Claims (7)

In an information processing apparatus that processes video information and sound information output from an external video / audio output device for display and sound emission, respectively,
A plurality of sound input terminals to which the sound signals output from the plurality of video and sound output devices of different types are input separately for each type; and
Selecting means for selecting any one of the sound signals input via each of the sound input terminals, and outputting the selected sound signal;
The selected sound signal is delayed using a delay time set in advance corresponding to the type of the video / audio output device from which the sound signal selected by the selection means and output as the selected sound signal is output. Delay means for outputting as a delayed sound signal for sound emission; and
An information processing apparatus comprising: The information processing apparatus according to claim 1,
Control means for outputting the delayed sound signal for sound emission in synchronization with the video signal output from the video sound output device from which the sound signal that is the original signal of the delayed sound signal is output An information processing apparatus further comprising: The information processing apparatus according to claim 1 or 2,
Further comprising storage means for storing delay time information indicating the delay time for each type for each type;
The information processing apparatus, wherein the delay means reads the stored delay time information and delays the selected sound signal. The information processing apparatus according to claim 3.
The information processing apparatus, wherein the storage unit stores a plurality of the delay time information for each type. The information processing apparatus according to claim 3 or 4,
An information processing apparatus further comprising setting means used for setting the delay time for each type for each type. An information processing apparatus according to any one of claims 1 to 5,
Display means for displaying a video corresponding to the video information output from the video / audio output device of a type corresponding to the delay time used when delaying the output delayed audio signal;
Speaker means for emitting a sound corresponding to the output delayed sound signal;
A display device comprising: An information processing method for processing video information and sound information output from an external video / audio output device for display and sound emission, respectively, and is output from a plurality of video / audio output devices of different types In an information processing method executed in an information processing apparatus including a plurality of sound input terminals into which the sound signals coming separately are input for each type,
A selection step of selecting any one of the sound signals input via each of the sound input terminals and outputting the selected sound signal;
The selected sound signal is delayed using a delay time set in advance corresponding to the type of the video / audio output device from which the sound signal selected in the selection step and output as the selected sound signal is output. A delay process for outputting sound as a delayed sound signal;
An information processing method comprising:

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