JP3095201U - Optical disk recording device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an optical disc capable of reproducing a sound with a pseudo-surround effect without using the pseudo-surround signal processing apparatus for an optical disc reproducing apparatus not equipped with the pseudo-surround signal processing apparatus. An optical disk recording device to be manufactured is provided. An analog signal input unit and a tuner are provided.
, A digital signal input unit 13, an AD converter 21 for converting an analog audio signal into a digital audio signal, and a first DS for providing a pseudo surround effect to the digital audio signal.
P22, an encoder 23 for converting an audio signal into a format recordable on an optical disk, a second DSP 25 for providing a pseudo surround effect to the digital audio signal input from the digital signal input unit 13, and a first DSP 22 An external speaker 82 for confirming a pseudo-surround effect is connected to the second DSP 25 via a DA converter 81, and records an audio signal having a pseudo-surround effect and converted into a predetermined format on an optical disc.

Description

[Detailed description of the invention]     [0001]   [Technical field to which the invention belongs]   The present invention relates to an optical disc recording for recording an audio signal with a pseudo surround effect. It concerns the device.     [0002]   [Prior art]   In recent years, a DVD (Digital Versatile Disk) has been used as a recording medium, and the DVD Optical disc playback devices that play back video and audio information recorded in ing.     [0003]   Currently, most of the DVD software has multi-track audio signals recorded. . To put this signal on a two-channel recording medium, a special encoding system Is required. Therefore, as a means of putting audio signals into this medium, One that has been subjected to encoding processing of a flash method is known. Re-encode the signal In order to generate a sound, a decoder that supports a predetermined surround system is required. Channel signal to improve the stereo center position. Signal and surround signal (rear channel signal) No. 5.1), it is necessary to separate them into 5.1 channels for playback with five speakers.     [0004]   However, in general use, a 5.1 channel surround system is a place, Not so popular due to the complexity of the wiring. So, reproduced with 5 speakers A sound field that is the same as or approximately the same as that of the Pseudo Sarah that reproduces from a pair of two speakers placed A round signal processing device has been proposed.     [0005]   Recently, users have been required to record their favorite video, music, and other sources on optical discs. Optical disk recording devices that can perform this are also beginning to spread.     [0006]       [Patent Document 1]       JP 2001-197416 A       [Patent Document 2]       JP-A-10-174197     [0007]   [Problems to be solved by the invention]   However, the sound field created by the five speakers as described above is simulated. To reproduce with two speakers, a pseudo surround signal processing device as described above After generating a pseudo-surround signal by using the audio signal to the pair of two speakers Or the pseudo surround signal processing device is built into the optical disc playback device. Need to be     [0008]   When the pseudo surround signal processing device is provided separately from the optical disc reproducing device Requires a place for placing a pseudo surround signal processing device, and wiring It gets messy. The pseudo surround signal processing device is built in the optical disc reproducing device. If it is, the space will not be secured or the wiring will not be complicated. The device itself becomes large, and the operation becomes complicated in any case.     [0009]   4. When recording video or TV broadcasts taken by an individual on an optical disc; Recording with 1 channel (5 speakers) surround effect is extremely difficult Expensive and not for the general public. Also, recording with a pseudo surround effect Even if it is a disc, it reproduces the produced optical disc by utilizing the pseudo surround effect. Requires a pseudo surround signal processing device.     [0010]   Accordingly, the present invention provides an optical disc replay without a pseudo surround signal processing device. For a raw device, a pseudo-surround signal can be generated without using the pseudo-surround signal processing device. An optical disc capable of producing an optical disc capable of reproducing an effect-added sound. An object of the present invention is to provide a recording device.     [0011]   In addition, the present invention is applicable to a playback device not equipped with a pseudo surround signal processing device. Therefore, the pseudo surround effect can be provided without using the pseudo surround signal processing device. To provide a pseudo-surround effect imparting device capable of outputting a modulated sound. Aim.     [0012]   [Means for Solving the Problems]   To achieve the above object, the invention according to claim 1 comprises an input for inputting an audio signal. System and convert the audio signal input from the input system into a format recordable on an optical disc A signal conversion system for rotating the optical disk; A recording system for optically recording the recorded audio signal on the optical disc, and a device including the respective systems. An optical disk recording device having a control system for controlling the entire device The system consists of a tuner that receives analog audio signals and analog audio signals from external devices. Input analog signal input section and input digital audio signal from external device A digital signal input unit for the tuner or the tuner. Converts an analog audio signal from the analog signal input section into a digital audio signal. And a digital audio signal converted by the AD converter. A first DSP for providing a surround effect, and a pseudo-surround in the first DSP An encoder that converts an audio signal with an effect into a format that can be recorded on an optical disk And the encoder has an input from the digital signal input unit. A second DSP for adding a pseudo surround effect to the digital audio signal is included. And the second DSP built in the encoder and the first DSP Confirm the pseudo surround effect given via the A converter and the amplifier External speakers are connected to the recording system, and the recording system The resulting audio signal can be recorded on an optical disc, Sound to which a pseudo surround effect has been added in a playback device that does not have a sound playback function An optical disk recording device characterized by being able to produce an optical disk capable of reproducing voice provide     [0013]   With this configuration, input from a tuner, external analog device, external digital device, etc. Adding a pseudo surround effect to the input audio signal and recording it on an optical disk Can be. Therefore, an optical disk reproducing apparatus without the pseudo surround reproducing function Can reproduce the sound to which the pseudo surround effect is applied.     [0014]   [Embodiment of the invention]   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 It is a block diagram showing composition of an optical disc recording device concerning one embodiment of a plan. this An optical disk recording apparatus A shown in FIG. 1 includes an input system 1 for inputting an audio signal, and an input system. A signal for converting an audio signal input from the power system 1 into a format recordable on the optical disc Dk. Signal conversion system 2 and a method for optically recording the converted audio signal on an optical disc Dk. Recording system 3, disk drive system 4 for rotating and driving an optical disk, and apparatus including each of the systems A control unit 5 for controlling the whole is provided.     [0015]   The input system 1 of the optical disc recording apparatus A shown in FIG. Is not limited, but here, an analog signal for inputting an analog audio signal from the VTR 6 is used. An analog input terminal 11 as a log signal input unit and a radio wave (RF (Radi o) and a tuner 12 for demodulating the analog audio signal into an analog audio signal. Decoding from analog devices (but not limited to DV (Digital Video) here) 7 Digital input terminal as digital signal input section for inputting digital audio signals 13 (here, but not limited to, IEEE 1394).     [0016]   The signal conversion system includes an analog audio signal input from the analog input terminal 11 and a channel. Which converts an analog audio signal modulated by the tuner 12 into a digital audio signal. The converter 21 and the digital audio signal output from the AD converter 21 To give a predetermined pseudo-surround effect (surround effect such as between sound field spreads). DSP (Digital Signal Processor) 22 for performing The digital audio signal output from the Encoder 2 for converting to a format (but not limited to MPEG2 here) 3 and a signal for transmitting the signal encoded by the encoder 23 to the recording system An output terminal (ATA I / F, but not limited thereto) 24 is provided. You.     [0017]   Further, the encoder 23 has a built-in second DSP 25, and the second DSP 25 , The digital audio signal input from the digital input terminal 13 is directly input, A predetermined pseudo surround effect is given by the second DSP 25 and the encoder 2 At step 3, the signal is converted into a predetermined signal format. Digital sound converted by encoder 23 The voice signal is transferred to a digital signal output terminal 24 for transmission to a recording system.     [0018]   The first DSP 22 and the second DSP 25 convert the digital audio signal into an analog audio signal. Connected to an external speaker 82 via a DA converter 81 that converts the signal I have. The audio signal converted by the DA converter 81 is amplified by the amplifier 83 It is sent to the external speaker 82. By listening to the sound from the external speaker 82, Pseudo-surround effect given to audio signal by first or second DSP 22 or 25 Can be confirmed.     [0019]   The recording system 3 is transmitted from the signal conversion system to an optical disk Dk as a recording medium. Head 31 for emitting a laser beam for recording an encoded audio signal Etc. are provided.     [0020]   The drive system 4 includes a tray (not shown) on which the optical disk Dk is placed during recording, A spindle motor 41 for rotating the disk Dk is provided.     [0021]   The control unit 5 includes a spindle motor 51, first and second DSPs 22 and 25, The operation of the optical head 31, the tuner 12, and the like is controlled. The operation unit 51 is connected. The operation unit 51 has a plurality of keys. An electric signal corresponding to the key is output to the control unit 5 and a key from the remote controller 52 is output. When an optical signal from the operation is received, the optical signal is converted into an electric signal, and the electric signal is transmitted. The signal is output to the control unit 5.     [0022]   FIG. 2 shows a sound to which a pseudo surround effect is applied by the optical disk recording device according to the present invention. 4 is a flowchart illustrating a process of recording a voice signal on an optical disc. Less than Below, referring to FIG. 1 and FIG. 2, pseudo-surround is applied to the audio signal from the external analog device. The process of recording on an optical disk in a state where the effect is provided will be described.     [0023]   First, an analog audio signal is input to the analog input terminal 11 from the external analog device 6. The force is checked (step S11). The analog signal input from the analog signal input terminal 11 The log audio signal is converted to a digital audio signal by the AD converter 21 (step Step S12).     [0024]   Pseudo surround to the signal converted to digital audio signal by AD converter 21 It is determined whether or not an effect is given (step S13). With pseudo surround effect If not (NO in step S13), the digital audio signal is It is sent to the DSP 22, but is not processed by the first DSP 22, (Step S16).     [0025]   If the pseudo surround effect is to be applied (YES in step S13), the conversion The digital audio signal is sent to the first DSP 22, where the first DSP 22 A pseudo surround effect is provided. At this time, the information provided by the first DSP 22 In order to check the pseudo surround effect, a digital The audio signal is converted into an analog audio signal by the DA converter 81, The voice signal is amplified by an amplifier 83 and output to an external speaker 82. Change the setting of the first DSP while listening to the sound (step S14) (step S14). S15).     [0026]   Whether the signal with or without the pseudo surround effect is 23 to a format for recording on the optical disc Dk (here, MPEG2 format) Is encoded (step S16). The encoded digital audio signal is A The signal is transmitted to the optical head 41 via the TA signal output terminal 24 (step S17). light The digital audio signal transmitted to the head 41 is recorded on an optical disc (step S18).     [0027]   Next, the analog audio signal received by using the built-in Consider a process for providing a round effect. First, after receiving the RF signal, the tuner 12 To demodulate it into an analog audio signal. Analog demodulated by tuner 12 The audio signal is converted into a digital audio signal using the AD converter 21. afterwards The same method as the optical disk recording processing method shown in FIG. 2 (from step S13 shown in FIG. 2) The information is recorded on the optical disk by the method described later).     [0028]   Also, FIG. 3 shows a digital audio signal inputted from the external digital 5 shows a flowchart of a procedure for recording a sound on an optical disc with a round effect.     [0029]   Digital audio signal input from digital input terminal 13 is built into encoder 23 It is transmitted to the second DSP 25 (step S21). Second DSP 25 Whether to apply a pseudo surround effect to the digital audio signal sent to (Step S22). Does not add pseudo surround effects to digital audio signals In this case (NO in step S22), the second DSP 25 converts the digital audio signal into a digital audio signal. Performs encoding without performing processing (step S25).     [0030]   When adding a pseudo surround effect to a digital audio signal (Y in step S22) In the case of ES), the pseudo surround effect is provided by the second DSP 25. This and In order to confirm the pseudo-surround effect given by the second DSP 25, The digital audio signal to which the similar surround effect is added is analyzed by the DA converter 81. It is converted to a log audio signal, and the analog audio signal is amplified by an Output to the speaker 82 and listening to the sound through the speaker 82 (step S23). The setting of the second DSP 25 is changed (step S24).     [0031]   Whether the signal with or without the pseudo surround effect is 23, the encoding (MPEG2 format) for recording on the optical disc Dk (Step S25). The encoded digital audio signal is output as an ATA signal. The signal is transmitted to the optical head 41 via the force terminal 24 (step S26). Optical head 41 The digital audio signal transmitted to the optical disk (step S27) .     [0032]   The above-described optical disk recording apparatus has considered only recording, but has a reproducing function. May be.     [0033]   Examples of the optical disk include optical heads such as DVD, MD, HD, and CD-R. Media that can be recorded by using a wide range can be adopted. Also, video data and audio data Data that is recorded by mixing data or that that records only audio data. I can respond.     [0034]   In addition, the above-described pseudo-surround effect imparting function can be performed by a pseudo It can be widely used for devices that do not have a similar surround effect.     [0035]   [Effect of the invention]     As described above, according to the invention of claim 1, the input from the analog input unit is performed. An analog audio signal is converted to a digital audio signal by an AD converter, A first DSP for providing a pseudo surround effect to a voice signal, and a pseudo DSP Converts an audio signal with a similar surround effect to a format recordable on an optical disc A digital signal input unit. Second DSP for adding a pseudo-surround effect to the input digital audio signal Is built in, and the second DSP built in the first DSP and the encoder is The pseudo surround effect given to the SP via the DA converter and the amplifier An external speaker for confirmation is connected, and the pseudo surround effect is added. The recorded and converted audio signal can be recorded and has a pseudo surround playback function. Optical device that can reproduce audio with the pseudo surround effect Obtain an optical disk recording device that can produce disks after confirming the pseudo surround effect Can be

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an optical disk recording device according to the present invention. FIG. 2 is a flowchart showing a process when recording is performed by applying a pseudo surround effect to an analog audio input signal using the optical disc recording apparatus according to the present invention. FIG. 3 is a flowchart showing a process for recording a digital audio input signal with a pseudo surround effect by using the optical disc recording apparatus according to the present invention. [Description of Signs] A Optical disk recording device 1 Input system 11 Analog input terminal 12 Tuner 13 Digital input terminal 2 Signal conversion system 21 AD converter 22 First DSP 23 Encoder 24 Signal output terminal 25 Second DSP 3 Recording system 31 Light Head 4 Drive system 41 Spindle motor 5 Control unit 6 External analog device 7 External digital device 81 DA converter 82 External speaker 83 Amplifier

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Claims (1)

Claims: 1. An input system for inputting an audio signal, a signal conversion system for converting an audio signal input from the input system into a format recordable on an optical disk, and the optical disk. An optical disc recording apparatus comprising: a disc drive system that rotationally drives the optical disc; a recording system that optically records the converted audio signal on the optical disc; and a control system that controls the entire apparatus including the respective systems. The input system has a tuner for receiving an analog audio signal, an analog signal input unit for inputting an analog audio signal from an external device, and a digital signal input unit for inputting a digital audio signal from an external device. An A / D converter that converts an analog audio signal from the tuner or the analog signal input unit into a digital audio signal; A first DSP for providing a pseudo surround effect to the digital audio signal converted by the D converter, and an encoder for converting the audio signal to which the pseudo surround effect has been applied by the first DSP into a format recordable on an optical disc The encoder has a built-in second DSP for imparting a pseudo surround effect to the digital audio signal input from the digital signal input unit, and the first DSP and the second DSP Second built-in encoder
An external speaker for confirming the provided pseudo-surround effect is connected to the DSP via a DA converter and an amplifier, and the recording system is provided with the pseudo-surround effect and converts the sound into a predetermined format. An optical disk recording device capable of recording a signal on an optical disk.