JP2006277826A - Information recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information recorder with excellent operability and user-friendliness capable of automatically evading the mixed recording of a plurality of sound sources (sources) inside the same file even when the sources are switched during the recording of an analog source. <P>SOLUTION: In addition to a plurality of information sources, a selection means for selecting a prescribed one of the information sources and outputting it for each predetermined route and a recording means for recording information from the selected information source, the information recorder is provided with a means for detecting the change of the selected information source by the selection means and a recording control means for stopping the recording operation of the information recording means in the case of detecting the change of the selected information source during the recording operation of the information recording means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an information recording apparatus, and more particularly to an information recording apparatus suitable for an in-vehicle audio system.

2. Description of the Related Art A car audio system that reproduces an information signal recorded on a cassette tape, a CD (compact disc), or the like is known as an acoustic system mounted on an automobile or the like.
In addition, with recent advances in audio technology, car audio systems that not only reproduce recorded signals but also have recording functions as in the prior art have appeared, and using these systems, users can Enjoying recording and playback.

By the way, in the car audio system capable of recording / reproducing as described above, if the sound source (source) is a digital sound source such as a CD, the recording start point and end point are clear, and automatic recording can be stopped. .
However, in the case of analog sources such as other sound sources such as cassette tapes, TVs, and radios, the recording start point and end point are unclear. The recording must be stopped in such a way as to end the recording, and this operation is troublesome for the user.

In addition, when recording an analog source, if the sound source is switched from the input source to another source in which the user is interested, the change is only the change of the sound source, so the recording of the analog source ends. Will continue until. As a result, there is a problem that recordings of two different sources (analog and analog, analog and digital) are recorded in a single file (track).
In order to avoid this mixture, a complicated operation for manually recording and interrupting recording is required.
JP 2001-291365 A

  The present invention has been made to solve the above-described problems, and the object of the present invention is to make it possible to switch a plurality of sound sources (sources) during recording of an analog source within a single file. It is an object of the present invention to provide an information recording apparatus that can automatically avoid recording with a mixture of sources and that has good operability and convenience.

  To achieve the above object, the present invention provides a plurality of information sources, selection means for selecting a predetermined information source from the information sources and outputting it for each predetermined route, and information from the selected information source. Recording means for recording information, means for detecting change of the selected information source by the selecting means, and recording operation of the information recording means when a change of the selected information source is detected during the recording operation of the information recording means And a recording control means for stopping the recording.

  According to the present invention, when a source is switched during recording of a sound source or the like as an information source, the file is automatically closed in synchronization therewith, so that a plurality of sources are mixedly recorded in the same file. It is possible to record the information organized for each source and reproduce it.

Preferably, the information recording means is configured to record a signal from the start of information recording to the end of recording as a single file data.
According to this, it is possible to automatically sort the recorded files by source and easily search for the file to be reproduced.

The information recording means is preferably configured to record each information in association with the information source selected at the time of recording the information.
According to this, after automatic recording is stopped, automatic recording of another source selected by the user is also possible.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a schematic configuration of an in-vehicle audio system having a hard disk recording function to which the present invention is applied.
The in-vehicle audio system 1 includes a sound source device 104 having a plurality of sound sources, sound source selection means 103a and 103b, an audio compression / expansion unit 101, a recording device 107, a bus conversion unit 106, and a D / A converter 109. And a speaker 110, an operation panel 108 for inputting various operations, and a control device (CPU) 100 for controlling the entire in-vehicle audio system.

The sound source device 104 includes an analog sound source such as a radio 104a, a TV 104b, a cassette tape 104c, and a TEL 104d, and a digital sound source such as a CD 104e.
The sound source selection units 103a and 103b are for switching to a determined source selector for each source of the sound source device, and sending a signal to the audio compression / decompression unit 101 after the switching is completed.
When the selected sound source device is a digital source such as a CD, it is output to the second source selector 103a.
When the selected sound source device is an analog source such as a radio, it is connected to the first source selector 103b and then output to the second source selector 103a via the A / D converter 102 that converts the analog signal into a digital signal. It has come to be.

The audio compression / decompression unit 101 compresses the digital signal output from the second source selector 103a to generate a compressed audio signal, and decompresses the compressed audio signal to perform the original processing. A compressed audio data processing unit 101a for restoring a digital signal is provided, and specifically, a DSP (Digital Signal Processor) is used.
The compressed audio signal output from the audio compression processing unit 101b may be temporarily stored in the DSP work RAM 111.

The recording device 107 is a storage means for recording music data and the like, and is usually a hard disk drive. A compressed audio signal corresponding to data to be recorded is sent from the compressed audio data processing unit 101a to a recording device such as a hard disk. 107, and stored as a music file in a predetermined recording area.
In order to store the hard disk smoothly, a temporary storage RAM 105 and a bus conversion unit 106 may be provided.

The control device 100 is for comprehensively controlling the operation of the in-vehicle audio device shown in FIG.
The control device (CPU) 100 is connected to each of the above-described components and includes a circuit and a program for controlling the entire system by transmitting and receiving data and control signals. During the recording operation of the recording device 107, the selection information change control unit 100a that performs switching control of the selected sound source signals output from the sound source selection means 103a and 103b by the switching control signals SEL1 and SEL2 when the sound source is changed by 108. The recording control unit 100b stops the recording operation of the recording device 107 when the change of the selected sound source signal is detected.
The selection information change control unit 100a and the recording control unit 100b are provided in the form of a software program or are externally attached as segments. The recording control unit 100b is connected to the on / off control system of the recording apparatus 107 via the RAM 105 or not.
An operation command from the outside to the control device 100 is issued by a user who operates the operation panel 108, and information regarding processing executed by the control device 100 is displayed on a display unit (not shown).
If the control device 100 is a system that also stores a navigation system, navigation processing can be performed simultaneously.

The present embodiment configured as described above operates as follows.
When recording the sound information recorded in the sound source device 104 in the hard disk drive 107, when a recording button (not shown) on the operation panel 108 is operated, the command of the recording button is transmitted to the control device 100, and the control device 100 instructs the sound source switching. Is performed on the second source selector 103a and the first source selector 103b, and after the switching operation is completed, the audio compression processing unit 101b of the audio compression / decompression unit (DSP unit) 101 sets the value of d1 selected by the source selector. Instructs the digital signal to be compressed.
At this time, the voice compression / decompression unit 101 performs a compression process using a dedicated work RAM 111 as necessary. The compressed data d4 is temporarily stored in the work RAM 105 in order to be written to the hard disk in a certain block unit, and then written for storage on the hard disk through the bus conversion unit 106.

.
When reproducing the compressed data stored in the hard disk, the previous route is traced back to the audio compression / decompression unit 101, and the data passes through the bus conversion unit 106 and the work RAM 105, and the audio compression processing unit of the audio compression / decompression unit 101 An extension (reduction) process is performed at 101a.
Thereafter, the uncompressed data is converted into an analog signal by the D / A conversion unit 109 and reproduced as sound through the speaker unit 110.

Data on the hard disk drive 107 is managed in units of files, and before writing the data, the file to be written is opened, and after the data is recorded, a close process is performed, so that the data is divided into units called files. It is done.
At this time, the file is generally opened before recording is started, and the file is generally closed manually or automatically when a certain condition such as time is satisfied.

  By the way, when recording music, in the case of a digital source such as a CD (Compact Disc) 104a, the separation for each source is clearly defined. It is possible to automatically create a file as On the other hand, in the case of an analog source such as a radio, there is no separation, so a file is created manually or by a close process at a fixed time. However, if the source selector 103b is moved and the source is switched before the close process is performed, another source is written to the same file from the middle. Switching manually to avoid this causes troublesome operations.

However, in the present invention, the control device 100 detects the change of the selection information source during the recording operation of the selection information change control unit 100a for controlling the change of the selection information source by the selection unit and the information recording unit. A recording control unit 100b for stopping the recording operation of the information recording means. For this reason, it is possible to automatically close the file and stop recording.
FIG. 2 is an operation flowchart by the means for controlling the change of the information source and the recording control means when switching to another source during information recording. The user operates the operation panel 108 to record the radio 104a, for example. When the source is switched to the TV 104b, the switching signal is transmitted from the operation panel 108 to the first source selector 103b via the CPU 100.
Here, when the recording device 107 is not in the “recording” state, the selection information change control unit 100a immediately changes from radio (analog) to TV (analog) from the source selector 1 and the source selector 2 to the source selector 1 and source selector 2. The switching instruction is output.

On the other hand, if the recording device 107 is in the “recording” state when the user performs a switching operation from the radio to the TV or CD, whether or not to end recording on a display unit (not shown) Display the message and ventilate the user. When the user selects “end”, the recording control unit 100b operates to forcibly close the file being recorded.
Thereby, it is possible to avoid mixing a plurality of sources in the same file.
Furthermore, as an application example, if a file folder for each source is prepared and a recorded file is automatically copied to the corresponding source folder, it is possible to easily select the file later.

It is a block diagram which shows schematic structure of a vehicle-mounted audio system. It is a flowchart in the case of switching to another source during recording.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Control apparatus 100a Selection information change control part 100b Recording control part 101 Voice compression / decompression part 103a, 103b Sound source selection means 104 Sound source apparatus

Claims (3)

  A plurality of information sources; a selection unit that selects a predetermined information source from the information sources and outputs the information for each predetermined route; a recording unit that records information from the selected information source; and the selection unit And a recording control means for stopping the recording operation of the information recording means when a change of the selected information source is detected during the recording operation of the information recording means. An information recording apparatus characterized by that.   The information recording apparatus according to claim 1, wherein the information recording unit records information from a recording start to a recording end of the signal as a single file data.   3. The information recording apparatus according to claim 1, wherein the information recording unit records each piece of information in association with an information source selected at the time of recording the information.

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