JP2006031840A - Data storing and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data storing and reproducing device in which copying speed of music information is increased and copy recording of the music information is realized while maintaining the continuity of the music information even though external disturbance such as vibration or the like is applied to the device. <P>SOLUTION: The copying speed of music information is increased by a storing means 1 which stores data, a first bus in which the data are transferred to the storing means 1 with a first speed, a second bus which transfers the data with a second speed that is faster than the first speed and a switching means 5 which is used to switch the first bus and the second bus. When external disturbance such as vibration or the like is applied to the device, copy recording of the music information is realized while maintaining the continuity of the music information. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an apparatus for storing and reproducing data, and more particularly to an on-vehicle or portable data storage / reproduction apparatus for storing and reproducing music data.

  In-vehicle or portable electronics equipped with a GPS positioning system that acquires current position information using a GPS (GPS: global Positioning System) satellite and also has a playback function such as a CD (CD: Compact Disc) Equipment is known. Such electronic devices are equipped with a large capacity hard disk drive (HDD: Hard Disc Drive) that stores data such as map information and music information.

  An optical disk reproducing device such as a CD mounted on such a device focuses the laser light emitted from the optical pickup on the information pits on the optical disk and reproduces the information. Control may become impossible. These problems are becoming more serious with the recent increase in the recording / reproducing speed of optical disks.

As for the HDD, a general HDD rotates a magnetic disk at a high speed, and the magnetic head is floated by a very small distance by buoyancy generated by the high-speed rotation of the magnetic disk, and this small distance is maintained. Since information is recorded and played back in a non-contact state, if the rotation suddenly stops during the rotation of the magnetic disk or a large vibration occurs, the magnetic head comes into contact with the surface of the magnetic disk, and the surface of the magnetic disk May cause mechanical damage. Therefore, for example, even when a large vibration occurs, a technique for reducing the influence of the vibration is disclosed (for example, see Patent Document 1).
JP 2002-281842 A

  By the way, for example, when the music information in the CD is reproduced at double speed and the music information is copied and recorded on the HDD, the music information reproduced at double speed is temporarily stored in a RAM or the like, and analog at a normal reproduction speed. It is necessary to convert this analog signal through a speaker while converting it into a signal. For this reason, there has conventionally been a problem that the copy speed for copying and recording music information on the HDD cannot be increased.

  In view of the above circumstances, the present invention, for example, increases the copy speed of data such as music information, and maintains the continuity of data such as music information even when a disturbance such as vibration is applied. An object of the present invention is to provide a data storage / reproduction device that realizes copy recording of data such as information.

  According to the first aspect of the present invention, there is provided storage means for storing data, a first bus for transferring data to the storage means at a first speed, and data at a second speed higher than the first speed. And a switching unit for switching between the first bus and the second bus.

  According to a second aspect of the present invention, in the data storage / reproducing apparatus according to the first aspect, the movement detecting means for detecting movement, and the switching means when detecting that the movement detecting means is moving. Switches to the first bus, transfers data to the storage means at the first speed, and detects that the movement detecting means is not moving, the switching means detects the second bus. And transferring data to the storage means at the second speed.

According to a third aspect of the present invention, in the data storage / playback device according to the first or second aspect of the present invention, the data storage / reproduction device includes sound generation means, and the data is music data,
When the music data is transferred at the first speed, a reproduction sound is output from the sound generation means.

  According to a fourth aspect of the present invention, in the data storage / reproducing apparatus according to the second or third aspect, the movement detecting means detects movement based on whether or not a parking brake is applied. To do.

  According to a fifth aspect of the present invention, in the data storage / reproducing apparatus according to the second or third aspect, the movement detecting means detects movement by detecting a vehicle speed pulse.

  According to a sixth aspect of the present invention, in the data storage / reproducing apparatus according to the second or third aspect of the present invention, the present invention includes a current position positioning unit, and the movement detection unit is based on position information detected by the current position positioning unit. , Detecting movement.

  A seventh aspect of the present invention is the data storage / reproducing device according to any one of the first to sixth aspects, wherein the external power input terminal is provided and a dry battery is connected to the external power input terminal. The data transfer is performed at the first speed.

  The invention according to claim 8 is the data storage / reproducing apparatus according to any one of claims 2 to 6, further comprising operation means for switching the switching means to the first bus. .

  According to the first aspect of the present invention, the data transfer speed can be set according to the situation by appropriately switching the two buses and transferring the data by the switching means, thereby increasing the data transfer speed. There is an effect that can be.

  According to the second aspect of the present invention, it is detected whether or not the data storage / reproducing apparatus is moving by the movement detecting means. If the data storage / reproducing apparatus is moving, the data is transferred on the first bus having a low transfer speed. If not, the data is transferred on the second bus having a higher transfer speed than the first bus. In this way, since the data transfer speed is changed to a low speed (first bus) during movement, even if a disturbance such as vibration that causes problems during movement occurs, the influence of this is reduced. There is an effect that continuity of data can be maintained.

  According to the third aspect of the present invention, when the data transfer rate is set to a low speed (first bus), there is an effect that data can be transferred and a reproduced sound of the transferred data can be heard.

  The invention according to claim 4 has an effect that it can be reliably detected whether or not the vehicle is moving by detecting whether or not the parking brake is applied.

  According to the fifth aspect of the present invention, there is an effect that it is possible to reliably detect whether or not the vehicle is moving by detecting a vehicle speed pulse generated as the vehicle tire rotates.

  The invention according to claim 6 can reliably detect whether or not the vehicle is moving by detecting a change in the position information with the passage of time based on the position information obtained by the current position measuring means. There is an effect that can be.

  According to the seventh aspect of the present invention, when driven by a dry battery, there is an effect that power consumption can be reduced by reducing the data transfer rate (first bus). In addition, when the apparatus is driven by a dry battery, it can be determined that the present apparatus is being carried. Therefore, by setting the data transfer speed to a low speed (first bus), particularly vibrations that are problematic during movement, etc. Even if this disturbance occurs, there is an effect that the influence of this can be reduced and the continuity of data can be maintained.

  According to the eighth aspect of the present invention, by using the operation means, for example, even when not moving, by setting the data transfer speed to a low speed (first bus), the reproduced sound of the transferred data is reproduced. The effect is that you can hear.

  Next, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a data storage / reproduction apparatus according to an embodiment of the present invention includes an HDD 1 (storage means), a current position positioning means 2, an optical disk reproduction means 3, an input unit 4 (operation means), and a switch. 5 (switching means), RAM 6, decoder 7, speaker 8 (sounding means), ROM 9, RAM 10, display unit 11, vehicle speed pulse terminal 12, parking terminal 13, transformer circuit 14, external The power input terminal 15, the battery terminal 16, a cigarette lighter adapter 18, a commercial power adapter 19, and a control circuit 20 (movement detecting means) are included.

  The HDD 1 is a magnetic recording medium that stores data such as map information and music information, and has a feature that it has a large capacity and can be accessed at high speed.

  The current position measuring means 2 includes an angle and speed sensor (not shown) and a GPS receiver, detects position information of the own vehicle or own position information based on information obtained therefrom, and detects the position information of the own vehicle or the own position information. Position information is displayed as a cursor on a map displayed on the screen of the display unit 11, and the user's own position information or own position information is provided to the user.

  The optical disk reproducing means 3 optically reads an optical disk such as a CD or a DVD by an optical pickup (not shown) and reproduces music information, map information, and the like.

  The input unit 4 includes buttons, a touch panel, and the like, and is used to input instructions for the user to execute each function. In the present embodiment, for example, when the user desires to reproduce music data even when the automobile or the device is not moving, it is used for instructing to switch the data transfer bus to the low-speed first bus. .

  The switch 5 appropriately switches a data bus for transferring data from the control circuit 20 to the HDD 1 based on a control signal from the control circuit 20. In the case of music data, the data bus includes a data line, a serial clock line, an LR clock, and the like, and a high-speed transfer bus and a low-speed transfer bus are prepared.

  The RAM 6 is a storage element that temporarily stores data to be transferred to the HDD 1 when the low-speed transfer bus is selected. For example, the RAM 6 inputs data reproduced at a double speed in the optical disk reproducing means 3, and a control circuit Under the control of 20, the input data is output to the subsequent decoder 7 at a normal speed. Further, by temporarily storing the reproduction data of the optical disc, for example, even when the optical control of the optical disc reproduction means 3 is temporarily disabled due to a large vibration or the like, and the continuity of the reproduction data is lost, By using the reproduction data that is already stored, it plays a role such as providing the user with a reproduced sound without any sense of incongruity.

  The decoder 7 inputs digital audio data from the RAM 6, performs error correction and demodulation processing on the input data, converts the input data into analog data, and outputs an analog audio signal to the speaker 8.

  The speaker 8 is a device for sounding an input analog audio signal to the outside.

  The ROM 9 is a storage element that stores a control program for controlling the entire system, various data, and the like.

  The RAM 10 is a storage element that temporarily stores data and the like necessary for controlling the entire system.

  The display unit 11 is composed of, for example, an LCD and displays various function menus, map information, and the like.

  The vehicle speed pulse terminal 12 is, for example, a terminal for inputting a so-called vehicle speed pulse having a rectangular wave shape whose frequency increases in proportion to the traveling speed of the automobile.

  The parking terminal 13 is a terminal for connecting to a parking brake of an automobile, and can detect ON / OFF of the parking brake by a binary signal of “H” and “L”.

  The transformer circuit 14 is a so-called DC-DC converter, and converts an input DC voltage into a DC voltage having a desired voltage value.

  The external power input terminal 15 is a terminal for inputting external power from the cigarette lighter adapter 18, the commercial power adapter 19, or the like.

  The cigarette lighter adapter 18 converts the DC 12V voltage supplied from the cigarette lighter terminal into a DC 9V voltage, and the commercial power adapter 19 converts the AC 100V voltage, which is a commercial power source, to a DC 10.5V voltage. Convert.

  The battery terminal 16 is a terminal for connecting a rechargeable dry battery 17 (battery) to the main body, and is supplied with 7.2 V DC from the rechargeable dry battery 17.

  The control circuit 20 controls the entire system according to a control program stored in the ROM 9. In the present embodiment, in particular, the movement of the automobile or the device is detected based on signals from the parking terminal 13, the vehicle speed pulse terminal 12, etc., and the data transfer speed is varied by controlling the switch based on this information. To do. Further, the system operation is controlled in accordance with a user instruction.

  Next, details of the operation of this embodiment will be described with reference to FIG.

  First, when the user inserts an optical disk into the optical disk reproducing means 3 or sends an instruction for reproducing operation from the input unit 4 to the optical disk already inserted, the optical disk rotates and the optical pickup is rotated. As a result, data is optically read from the optical disk and reproduced. Note that the playback speed is double speed playback that is faster than the normal playback speed.

  When the control circuit 20 inputs an optical disc playback instruction from the user, it simultaneously checks whether there is a data transfer request (step 101). When the control circuit 20 determines that there is a data transfer request, it subsequently checks whether it is moving (step 102). When the control circuit 20 determines that there is no data transfer request, the optical disk reproduction is continued while monitoring the data transfer request.

  Whether it is moving or not is determined, for example, by the following method.

  First, as a first method, the parking terminal 13 connected to the parking brake of the automobile is monitored to detect ON / OFF of the parking brake. When the parking brake is ON, that is, when the parking brake is applied, it is determined that the automobile is stopped. When the parking brake is OFF, that is, when the parking brake is not applied, it is determined that the automobile is moving. To do.

  As a second method, the vehicle speed pulse terminal 12 connected to the vehicle speed sensor is monitored to detect the presence or absence of the vehicle speed pulse. When no vehicle speed pulse signal is input to the vehicle speed pulse terminal 12, that is, when no signal is output from the vehicle speed sensor, it is determined that the vehicle is stopped, and the vehicle speed pulse signal is applied to the vehicle speed pulse terminal 12. Is input, that is, when a signal is output from the speed sensor of the automobile, it is determined that the automobile is moving.

  As a third method, the position information of the own vehicle (or device) obtained from the current position measuring means 2 is monitored, and the vehicle (or device) is moved by comparing the previous position information with the current position information. Is detected. That is, the position information from the current position measuring means 2 input at a predetermined time interval is sequentially compared, and if there is no change in the position information before and after, it is determined that the automobile (or device) is stopped. If there is a change in the position information before and after, it is determined that the automobile (or device) is moving. Note that the position information of the host vehicle (or device) obtained from the current position positioning means 2 includes some errors due to the characteristics of the current position positioning means 2. Therefore, in the determination of the position information before and after, it is necessary to detect the presence or absence of movement of the automobile (or the device) by considering these errors in advance.

  As a fourth method, the battery terminal 16 connected to the rechargeable dry battery 17 is monitored to detect whether or not the power supply is received from the external rechargeable dry battery 17. When the power supply is received from the external rechargeable battery 17, it is determined that the data storage / reproduction device of the present invention is portable and is moving, and the power supply is supplied to the external rechargeable battery 17. If not received, it is determined that the data storage / playback apparatus has not moved. It should be noted that although several methods for judging whether or not the automobile or the data storage / reproducing device is moving are shown, these methods may be used alone in the judgment, or a combination of several methods. You may judge comprehensively.

  When it is determined by any of the above methods that the automobile or the data storage / reproducing apparatus is moving, the control circuit 20 switches the switch 5 to the RAM 6 side, that is, the first bus having a low data transfer speed. (Step 104). Then, data is output from the control circuit 20 to the RAM 6 (step 105). The data input to the RAM 6 is output to the decoder 7 at a normal reproduction speed under the control of the control circuit 20 and is also transferred to the HDD 1 (step 106). The decoder 7 performs error correction and demodulation processing on the input data, and then converts the data into an analog signal and supplies it to the speaker 8. The speaker 8 sounds the input analog signal to the outside. Thereby, the user can listen to music recorded in the optical disc while transferring data. The data input to the HDD 1 is sequentially stored and stored in a predetermined memory area (step 108).

  On the other hand, if it is determined that the vehicle or device is not moving, it is next determined whether or not the user is requesting low-speed data transfer, that is, data transfer using the first bus. Step 103). If there is an instruction from the user as a result of the determination, the process proceeds to step 104 to perform processing. As a result of the determination, if there is no instruction from the user, the control circuit 20 switches the switch 5 to the HDD 1 side, that is, the second bus having a high data transfer speed (step 107). The data is transferred to the HDD 1, and the data transferred to the HDD 1 is sequentially stored and stored in a predetermined memory area at a high transfer rate (step 108).

  Therefore, according to the present embodiment, two data buses having different transfer rates and a switch for switching the data buses are provided, so that the data transfer rate to the HDD 1 can be appropriately changed according to the situation. Can do.

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings, but the specific configuration is not limited to these embodiments, and includes design changes and the like within a scope not departing from the gist of the present invention. It is.

It is a block diagram of the mobile telephone apparatus of this invention. It is a process flowchart of the mobile telephone apparatus of this invention.

Explanation of symbols

1 HDD (storage means)
2 Current position measuring means 3 Optical disc reproducing means 4 Input section 5 Switch (switching means)
6 RAM
7 Decoder 8 Speaker (sounding means)
9 ROM
10 RAM
DESCRIPTION OF SYMBOLS 11 Display part 12 Vehicle speed pulse terminal 13 Parking terminal 14 Transformer circuit 15 External power input terminal 16 Battery terminal 18 Cigarette lighter adapter 19 Commercial power adapter 20 Control circuit (movement detection means)

Claims (8)

Storage means for storing data;
A first bus for transferring data to the storage means at a first rate;
A second bus for transferring data to the storage means at a second speed that is faster than the first speed;
Switching means for switching between the first bus and the second bus;
A data storage / reproducing apparatus comprising: Movement detection means for detecting movement;
When the movement detecting means detects that it is moving, the switching means switches to the first bus and transfers data to the storage means at the first speed;
2. The switch according to claim 1, wherein when the movement detecting unit detects that the moving unit is not moving, the switching unit switches to the second bus and transfers data to the storage unit at the second speed. A data storage / reproduction device according to claim 1. The sound data is provided and the data is music data,
3. The data storage / reproduction device according to claim 1, wherein when the music data is transferred at the first speed, a reproduction sound is output from the sound generation means.   4. The data storage / reproducing apparatus according to claim 2, wherein the movement detecting unit detects movement based on whether or not a parking brake is applied.   4. The data storage / reproducing apparatus according to claim 2, wherein the movement detecting unit detects movement by detecting a vehicle speed pulse. Equipped with current position positioning means,
4. The data storage / reproducing apparatus according to claim 2, wherein the movement detecting unit detects movement based on position information detected by the current position positioning unit. External power input terminal
The data storage / reproducing apparatus according to any one of claims 1 to 6, wherein when a dry battery is connected to the external power input terminal, data is transferred at the first speed. 7. The data storage / reproduction device according to claim 2, further comprising an operation unit that switches the switching unit to the first bus.

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