JP2001236097A - Audio recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an audio recording and reproducing device in which a desired recorded portion is easily searched at high speed. SOLUTION: The audio recording and reproducing device is provided with an IC memory 1 which records audio data, an audio recording and reproducing circuit 2 which reproduces audio data recorded in the memory 1 and a microcomputer 8 which controls the operation of the circuit 2. In the memory 1, a series of audio data as well as index information are recorded. When being reproduced, the information in specified and reproducing of the audio data is started from a data recording start position recognized by the index information. During the process in which a series of audio data are recorded to the memory 1, the microcomputer 8 adds the index information in a certain period to the audio data that are recorded within each period.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio recording / reproducing apparatus capable of recording an audio signal on a recording medium such as an IC memory and reproducing the audio signal from the recording medium, such as an IC recorder. .

[0002]

2. Description of the Related Art In an IC recorder, a sound input to a microphone is recorded as a digital sound signal in an IC memory by a recording operation, and an I / O signal is reproduced by a reproducing operation.
The digital audio signal recorded in the C memory is reproduced and output as audio from a speaker. In the recording operation, index information and a series of audio data are recorded in the IC memory (1) as shown in FIG. The index information includes a file name and a sampling frequency for a series of audio data, and is automatically written at the start of recording. Here, the file name includes, for example, track numbers (1, 2, 3,...). Each time recording is started, the track number is incremented, and the file name is automatically updated.

In the case where a plurality of recording operations are performed and a plurality of recording areas are formed in the IC memory, when reproducing audio data from one desired recording area, for example, a skip operation is performed. By repeatedly operating the keys, a plurality of pieces of index information recorded in the IC memory are searched, and the data reproduction start position is skipped one after another. Therefore, the user
By operating a skip key or the like, it is possible to quickly start reproduction of a sound from a desired recording area.

[0004]

However, in the conventional IC recorder, after index information is recorded at the start of recording as shown in FIG. 2A, audio data is recorded until the end of recording, and the recording time is reduced. Regardless of the length of T, the audio data from the start of recording to the end of recording was managed as one file (track). For example, if a long-time meeting was recorded, it would be necessary to When you want to listen to only a recorded part, it is necessary to search for the desired recorded part while repeating the fast-forward operation and the reproducing operation, so that the operation is extremely complicated and it takes time to start reproduction of the desired recorded part. There was a problem.

An object of the present invention is to provide an audio recording / reproducing apparatus which can quickly and easily find and reproduce a desired recording portion.

[0006]

An audio recording / reproducing apparatus according to the present invention comprises an audio recording circuit for recording audio data on a recording medium, and an audio reproducing circuit for reproducing audio data recorded on the recording medium. Circuit, a control circuit for controlling the operation of the audio recording circuit and the audio reproduction circuit, and an input device for supplying an operation signal according to a user operation to the control circuit. Index information for recognizing the recording start position of the audio data on the recording medium is recorded. By specifying the index information at the time of data reproduction, reproduction of the audio data is started from the data recording start position recognized by the index information. Be started. Here, in the process of recording a series of audio data on the recording medium, the control circuit adds index information to the audio data to be recorded in each cycle at a constant cycle.

In the above-described audio recording / reproducing apparatus of the present invention, when a series of audio data is recorded on a recording medium,
Since index information is added to audio data to be recorded in each cycle at a fixed cycle, a series of audio data is divided into a plurality of audio data parts, and one index information is provided for each audio data part. Will be given. Therefore, in the subsequent data reproduction, when a desired recorded portion is searched for and reproduced, for example, a plurality of index information is retrieved by operating a skip key, and the index information is formed on the recording medium. The recording start positions of the plurality of audio data parts are skipped one after another.

More specifically, the index information includes the file name of the audio data that follows, and the control circuit can recognize the data recording start position based on the file name. According to this specific configuration, one file name is given to each of a plurality of audio data parts constituting a series of audio data. It can be dubbed or edited.

In a specific configuration, the control circuit further includes means for detecting a remaining time in which the recording medium can be recorded, and means for determining the length of the predetermined period based on the detected remaining time. . This makes it possible to automatically determine the length of the fixed period according to the length of the remaining recordable time of the recording medium. For example, if the remaining recording time of the recording medium is short, a short cycle is set,
Setting of a cycle longer than the remaining recordable time of the recording medium is avoided.

In another specific configuration, the length of the predetermined period can be set by operating an input device, and the control circuit further includes means for detecting a remaining recordable time of the recording medium. Means for comparing the length of the set fixed period with the detected remaining time, and only when the set fixed time is shorter than the detected remaining time, index information based on the fixed period. Means for executing the assignment. This allows the user to set the length of the certain period,
For example, a long cycle may be set to perform a rough search, and a short cycle may be set to enable a fine search. When setting the cycle, the remaining recordable time of the recording medium is referred to avoid setting a cycle longer than the remaining time.

[0011]

According to the audio recording / reproducing apparatus according to the present invention, it is possible to quickly and easily find a desired recording portion of a recording medium.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an IC recorder will be specifically described with reference to the drawings. In the IC recorder according to the present invention, as shown in FIG. 1, an audio signal obtained from a microphone (5) is supplied to an audio recording / reproducing circuit (2) via an amplifier (6), and is converted into digital audio data. The audio data is recorded in the IC memory (1) together with index information described later. The audio data recorded in the IC memory (1) is an audio recording / reproducing circuit.
It is read by (2) and converted into an analog audio signal. The audio signal is supplied to a speaker (4) via an amplifier (3).

The recording / reproducing operation of the audio recording / reproducing circuit (2) is controlled by a microcomputer (8). The microcomputer (8) has a key input device (7) and a display.
(9) is connected. By operating the key input device 7, the user can instruct a recording operation, a reproduction operation, a fast-forward operation, a skip operation, and the like. display
In (9), an operation state and the like are displayed.

For example, when the user operates the key input device (7) to instruct a recording operation, the microcomputer (8)
Generates the index information and outputs the audio
Supply to (2). In response, the audio recording / reproducing circuit (2)
Writes the index information into the IC memory (1), and then writes a series of audio data input thereafter into the IC memory (1). Also a microcomputer
(8) is a process in which the series of audio data is recorded in the IC memory (1), and is recorded within each period at a constant period t (assigned time) as shown in FIG. 2 (b). Assign index information to audio data.

FIG. 3 shows a recording control operation executed by the microcomputer (8). First, in step S1, it is determined whether or not the REC key for starting recording has been turned on. If the determination is affirmative, the process proceeds to step S2 to check the recording mode set at that time. The recording mode includes an index assignment automatic setting mode for automatically assigning index information, an index assignment time designation mode in which a user designates an index information assignment time, and a normal mode in which index information is not assigned during recording. There is a recording mode.

After confirming the recording mode in step S2, it is determined in step S3 whether or not the index (Ix) allocation automatic setting mode is set. If the determination is yes, the process proceeds to step S4, and the IC memory is set. Check remaining recording time. Subsequently, in step S5, an index allocation time is determined and set from the remaining time. Here, in order to determine the index allocation time, for example, a method of setting a predetermined index allocation time if the remaining time is equal to or more than a certain value, a method of setting the result of dividing the remaining time by a predetermined integer value as the index allocation time For example, various methods can be adopted.

On the other hand, if the answer is NO in step S3, it is further determined in step S6 whether or not the mode is the index assignment time designation mode. If the answer is YES, the process proceeds to step S7. Then, the remaining recordable time of the IC memory is checked. Then, step S8
Then, the index allocation time input by the user's operation is designated and set. Thereafter, in step S9, it is determined whether or not the remaining time is equal to or longer than the set time. If the determination is NO, the user is prompted to re-enter the index allocation time in step S10, and then returns to step S8. Repeat the designation and setting of the index allocation time.

If the answer is affirmative in step S9, the process moves to step S11 to execute a recording operation while recording index information for each set index allocation time. Here, the index information includes a file name and a sampling time, and any name including a track number (1, 2, 3,...) Can be adopted as the file name. In this case, the track number is incremented for each index allocation time. afterwards,
In step S12, it is determined whether or not a STOP key for stopping recording has been turned on. If no, the process returns to step S11 to continue the recording operation, and if the determination is yes, the process proceeds to step S16. To stop the recording operation.

On the other hand, if it is determined NO in step S6, the process proceeds to step S13, where it is determined whether or not the normal recording mode is set.
Return to step 2 and repeat the recording mode check. Step S1
If it is determined to be YES in step 3, the process proceeds to step S14 to start normal recording, and then to step S15.
It is determined whether or not the TOP key has been turned on. If the answer is no, the process returns to step S14 to continue normal recording. Thereafter, when it is determined YES in step S15, the process proceeds to step S16, and the recording operation is stopped.

After recording according to the above procedure,
In data reproduction, a plurality of index information recorded in the IC memory (1) is searched by performing a skip operation by the key input device (7), and a plurality of index information formed in the IC memory (1) is retrieved. The recording start position of the audio data section is skipped one after another.

Therefore, the user can quickly and easily search for a desired voice data portion from a plurality of voice data portions formed in the IC memory and reproduce the voice data from the voice data portion. I can do it. In addition, since individual file names are given to each audio data section, it is possible to take out only a desired audio data section and dub it to another IC memory or edit it.

The configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims. For example, the present invention is not limited to an IC recorder, but can be applied to various audio recording / reproducing devices.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an IC recorder according to the present invention.

FIG. 2 is a diagram comparing a recording state of index information and audio data recorded in an IC memory between a conventional example and the present invention.

FIG. 3 is a flowchart showing a recording control procedure in the IC recorder of the present invention.

[Explanation of symbols]

 (1) IC memory (2) Voice recording / reproducing circuit (4) Speaker (5) Microphone (7) Key input device (8) Microcomputer (9) Display

Continued on the front page (72) Inventor Masanao Yoshida 1-1, Sanyocho, Daito-shi, Osaka Inside Sanyo Techno Sound Co., Ltd. (72) Katsuyuki Matsumoto 1-1-1, Sanyocho, Daito-shi, Osaka Sanyo Techno ・Sound Co., Ltd. F term (reference) 5D044 AB05 CC08 DE03 DE23 DE37 DE45 DE57 DE58 EF05 FG18 GK12 5D045 DB01

Claims (4)

[Claims] An audio recording circuit for recording audio data on a recording medium, an audio reproducing circuit for reproducing audio data recorded on the recording medium, and controlling operations of the audio recording circuit and the audio reproducing circuit. And an input device for supplying an operation signal according to a user operation to the control circuit. The recording medium includes a series of audio data and a recording start position of the audio data on the recording medium. In the audio recording / reproducing apparatus in which the reproduction of the audio data is started from the data recording start position recognized by the index information by specifying the index information at the time of reproducing the data, the control circuit comprises: In the process of recording a series of audio data on the medium,
An audio recording / reproducing apparatus, wherein index information is added to audio data to be recorded in each cycle at a constant cycle. 2. The audio recording / reproducing apparatus according to claim 1, wherein the index information includes a file name of the following audio data, and the control circuit recognizes a data recording start position based on the file name. 3. The control circuit further comprises: means for detecting a remaining time in which the recording medium can be recorded, and means for determining the length of the fixed period based on the detected remaining time. Or the audio recording / reproducing device according to claim 2. 4. The method according to claim 1, wherein the length of the fixed period is set by an operation of an input device, and the control circuit further comprises: a unit for detecting a remaining time of the recording medium that can be recorded on the recording medium; Means for comparing the length with the detected remaining time, and means for executing the addition of the index information at the fixed period only when the set fixed time is shorter than the detected remaining time. An audio recording / reproducing apparatus according to claim 1 or 2, further comprising: