KR100758988B1 - Portable device and data recording / reading method using the mobile device - Google Patents

Abstract

Disclosed are a portable device capable of recording / reading data according to a mounting environment of a recording medium and a method thereof. The portable device includes an input unit for inputting a user command for recording / reading data, an optical pickup unit for recording / reading data by accessing the recording medium, and whether the recording medium is mounted when a user command is input through the input unit. If it is determined that the recording medium is mounted, the optical pickup unit is moved to the calculated position by calculating the position of the data to be recorded / read from the reference area set in the recording medium, and the optical data is recorded / read from the moved position. And a control unit for controlling the pickup unit. Here, the controller generates a detection signal for whether the recording medium is mounted through the optical pickup unit, and determines whether the recording medium is mounted from the signal picked up in response to the detection signal. In addition, the controller determines whether the recording medium is normally mounted by using a signal picked up through the optical pickup unit at a position corresponding to the reference area. As a result, the portable device can immediately correct when the recording medium is not mounted or is abnormally mounted, thereby reducing the possibility of malfunction or failure.

Portable devices, recording media, optical pickup, recording, reading

Description

Portable device and data writing / reading method using the same

1 is a schematic block diagram of a DCDP according to the present invention;

2 is a block diagram showing a schematic configuration of the DCD deck portion of FIG.

3 is a block diagram illustrating data exchange between a host and a register included in the DCDP of FIG. 1;

4 is a plan view showing one surface of the DCD divided by recording area;

5 and 6 are flowcharts illustrating a data writing / reading process by the DCDP of FIG. 1.

Explanation of symbols on the main parts of the drawings

10: DCD 12: Hole

14: reference area 16: data recording area

18: File system recording area 100: DCDP

120: engine portion 127: register portion

140: host 200: computer

The present invention relates to a portable device and a data recording / reading method using the portable device. More particularly, the present invention relates to a portable device capable of recording / reading data according to a mounting environment of a recording medium and a data recording / reading method using the same. It is about.

With the development of modern technology, useful devices for reproducing or restoring desired information regardless of time and place have been widely used. Among the devices that have been popularly presented are recording media such as magnetic tape, floppy disk (FD), compact disk (CD), and the like, and devices using the recording media. With the development of digital technology, these recording media are getting larger and the system is getting smaller and faster. The development of such recording media and systems, and the popularization of the Internet, enable individuals to acquire and store large amounts of information.

Recently, a small disk of 32 mm in diameter, which has a large capacity of 500 megabytes in comparison with its size, and a device for driving the recording medium have been developed, and the user (hereinafter referred to as DCDP (Digital Convergence Disk Player) and portable) The term device is used interchangeably to record / read data on a recording medium (hereinafter referred to as a digital convergence disk (DDC)).

However, in the above-described DCD and DCDP, when the DCD is incorrectly mounted on the DCDP, it may cause a malfunction of the DCDP, which may cause a failure of the DCDP.

 The present invention was devised to solve the above problems, and an object of the present invention is to provide a portable device and a method capable of recording / reading data according to a mounting environment of a DCD.

A portable device according to the present invention for achieving the above object is a portable device capable of recording / reading data to a detachably mounted recording medium, for inputting a user command for recording / reading the data. An input unit, an optical pickup unit for recording / reading data by accessing the recording medium, and when the user command is input through the input unit, determining whether the recording medium is mounted and determining that the recording medium is mounted. And a control unit for controlling the optical pickup unit to move the optical pickup unit to the calculated position by calculating the position of the data to be recorded / read from the reference area set in the recording medium and to record / read the data from the moved position. The recording medium has a disc shape and occupies a predetermined area on the central side of the recording medium. Has a ring-type reference area, and the control unit controls the optical pickup unit to generate a detection signal for mounting of the recording medium through the optical pickup unit, and from the signal picked up in response to the detection signal. It is characterized by determining whether or not the recording medium is mounted.

The portable device may further include a display unit, and when the controller determines that the recording medium is not mounted by the pickup signal, the portable device may display a message indicating that the recording medium is not mounted on the display unit.                     

In addition, if it is determined that the recording medium is mounted, the controller moves the optical pickup to a position corresponding to the reference area stored for the case where the recording medium is normally mounted, and the optical pickup at the moved position. If the information picked up by controlling the unit is not information corresponding to the reference area, it is preferable to determine that the recording medium is abnormally mounted and to control the portable device to extract the recording medium.

In addition, if it is determined that the recording medium is abnormally mounted, the control unit may display that the recording medium is abnormally mounted on the display unit.

The controller may store or delete the data being recorded on the recording medium when an extraction command for the recording medium is input through the input unit while the optical pickup unit is recording the data by accessing the recording medium. It is preferable to display a user selection menu on whether to make a display.

On the other hand, according to the portable device according to the invention, in the data recording / reading method of the portable device for the removable recording medium, it is determined whether a user command for recording / reading of the data is input through the input unit Step, if the user command is input, controlling the optical pickup unit to generate a detection signal for the mounting of the recording medium through the optical pickup unit, the mounting of the recording medium from the signal picked up in response to the detection signal And determining whether or not the recording medium is mounted, and recording / reading the data by the optical pickup unit, wherein the data recording / reading method of the portable device is provided. .

In the data recording / reading method of the portable device, if it is determined that the recording medium is mounted, calculating a position of the data to be recorded / read from a reference area set in the recording medium, and moving the optical pickup unit to the calculated position. And controlling the optical pickup to record / read the data from the moved position.

The data recording / reading method of the portable device may further include displaying a message indicating that the recording medium is not mounted on the display unit when it is determined that the recording medium is not mounted.

The data recording / reading method of the portable device may further include moving the optical pickup unit to a position corresponding to the reference region stored when the recording medium is normally mounted. Picking up information from the mounted recording medium by controlling the optical pickup unit at the predetermined position; determining that the recording medium is abnormally mounted if the picked-up information is not information corresponding to the reference area; and If it is determined that the recording medium is abnormally mounted, the method may further include extracting the recording medium.

The data recording / reading method of the portable device may further include indicating that the recording medium is abnormally mounted on the display unit when it is determined that the recording medium is abnormally mounted.

The data recording / reading method of the portable device may further include determining whether an extraction command for the recording medium is input through the input unit while the optical pickup unit approaches the recording medium and records the data. If the extraction command is input through an input unit, it is preferable to further include displaying on the display unit a user selection menu on whether to store or delete the data being recorded.

As a result, the portable device according to the present invention can reduce the possibility of malfunction or failure due to abnormal mounting of the recording medium which may occur when data is recorded / read out on the recording medium.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 is a schematic block diagram of a DCDP according to the present invention, Figure 2 is a block diagram showing a schematic configuration of the DCD deck portion of FIG.

Referring to the drawings, the DCDP 100 includes an engine unit 120 and a host 140. The engine unit 120 is a device for reading out predetermined information from the DCD 10 by rotating the detachably mounted DCD 10 or recording the predetermined information in the DCD 10. The host 140 may be connected to the engine unit 120 to control the engine unit 120, and may be connected to an external device, for example, a personal computer (PC) 200, to control the engine unit 120.

The engine unit 120 includes a DCD deck unit 122, a DCD servo 124, a buffer 125, an engine memory 126, an engine control unit 128, and an engine interface 129. The DCD deck unit 122 includes a DCD drive 122a, an optical pickup unit 122b, and a signal processor 122c.

The DCD deck unit 122 is controlled by the engine controller 128 when the DCD 10 is inserted into the DCD drive 122a to record data in the DCD 10 or to pick up data from the DCD 10. Here, data recording to the DCD 10 or data pickup from the DCD 10 is implemented by the optical pickup unit 122b. The optical pickup unit 122b may be controlled by the controller 141 of the host 140 to generate a detection signal for whether the DCD 10 is mounted. In addition, the optical pickup unit 122b signals the data received from the engine controller 128 and records the data in the DCD 10, or signals the data picked up from the DCD 10 and provides the signal to the engine controller 128. . The signal processor 122c performs signal processing such as A / D conversion, measurement of jitter value for the reproduced signal, and compensation processing, which are well known techniques.

The DCD servo 124 drives the DCD drive 122a under the control of the engine controller 128. That is, the DCD servo 124 rotates the DCD 10 by varying the speed according to the signal received from the engine controller 128.

The engine controller 128 transmits and receives data to and from the controller 141 of the host 140 through the engine interface 129. The attribute information of the files recorded in the DCD 10 received from the DCD deck unit 122 under the control of the engine control unit 128 is transferred to the control unit 141 of the host 140 through the engine interface unit 129. Is sent. In addition, the engine controller 128 receives a signal corresponding to the detection signal picked up by the optical pickup unit 122b from the optical pickup unit 122b and a signal read out from the DCD 10 and transmits the signal to the controller 141. do.

The buffer 125 is for temporarily storing data to be recorded and reproduced when data is recorded and reproduced with respect to the DCD 10, and may use a static random access memory (SRAM). The engine memory 126 is for storing code values and control data of various command words promised between the DCD 10, the engine unit 120, and the engine unit 120 and the host 140. flash memory: flash RAM) can be used. For example, the engine memory 126 stores the position of the reference area set in the DCD 10 when the DCD 10 is normally mounted in the DCD drive 122a. When the DCD 10 is mounted on the DCD drive 122a, the engine controller 128 searches the engine memory 126 to move the optical pickup unit 122b to the stored position. The engine controller 128 controls the DCD deck 122, the DCD servo 124, and the buffer 125. The engine controller 128 transmits and receives data to and from the control unit 141 of the host 140 through the engine interface 129, and receives a control signal for the DCD deck unit 122 from the control unit 141 to control the DCD deck unit ( 122) can be controlled. The engine interface 129 provides an interface between the engine unit 120 and the host 140.

The host 140 includes a control unit 141, a power unit 142, a memory 143, an external interface 144, a display unit 145, an audio output unit 146, a search unit 147, an input unit 148, and a battery. The remaining amount detection unit 149 is included.

The control unit 141 is connected to the engine interface 129 and accesses the engine unit 120 to control not only recording and reading data but also reproducing the read data and the entire DCDP 100. In addition, the controller 141 controls the entire DCDP 100 to process reproduction / recording of a file according to attribute information of data read out in units of files.

The controller 141 includes a timer 141a and an OSD processor 141b. The timer 141a provides time information for controlling the DCDP 100. The OSD processor 141b provides various character information to be displayed on the display unit 145.                     

The power supply unit 142 includes a main battery 142a and a backup battery 142b. The main battery 142a provides a power source for driving the DCDP 100. The backup battery 142a provides a power supply for returning data remaining in the memory 143 to the DCD 10 after the power supply of the DCDP 100 is turned off. The remaining battery detection unit 149 checks the remaining amount of the main battery 142a and transmits the result to the controller 141.

In addition, the memory 143 is controlled by the controller 141 and receives and stores attribute information about a file recorded in the DCD from the controller 141. Here, the attribute information includes information about a recording root, a file name, and whether or not deletion is possible for the file recorded in the DCD 10. The display unit 145 is controlled by the controller 141 and is preferably implemented to display a list of attribute information of files stored in the memory 143. In addition, the display unit 145 may be controlled by the controller 141 to display a message corresponding to an operation process of the DCDP 100.

The external interface 144 of the control unit 141 used a USB interface as an interface between the DCDP 100 and the PC 200.

The audio output unit 146 is controlled by the control unit 141 and outputs audio data reproduced from the DCD 10. When the search unit 147 searches for the presence or absence of the DCD 10 by the mechanical operation and the operation signal by the optical pickup unit 122b instead of searching for the DCD 10 by the optical pick-up unit 122b. Is used.

The input unit 148 may be configured to input a user's read command to the files displayed on the display unit 145 or to input a recording command for downloading and recording a predetermined file through a computer connected to the Internet. In this case, the input unit 148 is preferably implemented to position the cursor on the file name displayed on the display unit 145, and to move the cursor located to select and input a desired file name.

The engine unit 120 also includes a register unit 127 composed of four registers as shown in FIG. The register section 127 is composed of a control register 127a, a status register 127b, a byte counter register 127c, and a data register 127d, and each register is used for communication with the host 140. The host 140 selects a register to be accessed from among the registers of the register unit 127 according to the values of the two bit bits (DPI_ADD0 and DPI_ADD1) for the DCD interface. The host 140 performs a write operation on the control register 127a, and the engine 120 performs a read operation.

The control register 127a has the function control and interface interrupt enable / disable values recorded by the host 140. The host 140 can read only the status register 127b, and the engine unit 120 can both read and write the status register 127b. The status register 127b holds status information and interrupt reason information. The host 140 and the engine unit 120 may perform both write and read operations with respect to the byte counter register 127c. However, the host 140 may write to the byte counter register 127c only when the BUSY bit of the status register 127b is clear, and the data DATA bit of the status register 127b is set. Only return valid information is read from the byte counter register 127c. The byte counter register 127c contains the byte count for the next command, data, or status mode transfer. The host 140 and the engine unit 120 can both read and write the data register 127d. However, the host 140 writes the data to the data register 127d to transmit data to the engine unit 120 during the command and data out phases. In addition, the host 140 reads the data register 127d to transmit data from the engine unit 120 during the status and data in phases.

Between the host 140 and the engine unit 120, a physical layer physically connecting the host 140 and the engine unit 120, and information between the host 140 and the engine unit 120. A data-link layer defining a method used for the exchange, a command layer recording commands related to data for the DCD 10 to control data accessed by the engine unit 120, and There are four layers of connection states, including an application layer including file data / meta data mapping and a user interface. The connection state of the four layers existing between the host 140 and the engine unit 120 is such that file data / metadata recorded in the DCD driven by the engine unit 120 is smoothly transmitted to the host 140 to be processed. To help.

4 is a plan view showing one surface of a double-sided recordable DCD divided by recording area. Referring to the drawings, the DCD 10 has a disc shape, and is divided into a hole 12, a reference area 14, a data recording area 16, and a file system recording area 18 from the center of the disc to the circumferential direction. have.

The hole 12 is formed in the central portion of the DCD 10, and mitigates the shaking while the DCD 10 is rotated. The reference region 14 of the DCD 10 is formed in a ring type so as to occupy a predetermined range around the hole 12. In this reference area 14, a unique number assigned to each DCD 10 is recorded in order to distinguish each DCD 10 from each other. In addition, the reference area 14 includes identification information on one side and the other side of one DCD 10 according to the characteristics of the DCD 10, which is a double-sided recordable optical recording medium. When the controller 141 records / reads data through the optical pickup unit 122b, the controller 141 uses reference position information set in the reference region 10 of the DCD 10 as the reference position information. The position of the data to be recorded / read can be calculated.

The data recording area 16 is an area where files including music data, document data, video data, and the like are recorded and occupies most of the DCD capacity.

The file system recording area 18 is formed in a ring shape at the outermost part of the DCD 10, and information about each file recorded in the data recording area 16 of the DCD 10, namely, file system information and directory. The information is recorded. The file system information is a file size, a file name, a recording date and time, a format of a recorded file, a recording root of each recorded file, and a file of a file recorded in the data recording area 16 of the DCD 10. Last modification date and time.

Directory information refers to a space separated to store files related to each other in a group. Unrelated files are not mixed by being stored in different directories.

5 and 6 are flowcharts illustrating a data writing / reading process by the DCDP of FIG. 1. Referring to the drawing, the control unit 141 of the DCDP 100 determines whether a user command for writing / reading data is input through the input unit 148 (S501). When a user command for writing / reading data is input through the input unit 148, the control unit 141 generates the detection signal for mounting of the DCD 10 through the optical pickup unit 122b. The control signal is transmitted to the control unit 128, and the engine control unit 128 is controlled by the control unit 141 to generate a detection signal for whether the DCD 10 is mounted through the optical pickup unit 122b (S503). . The optical pickup unit 122b picks up a signal corresponding to the generated detection signal. The signal corresponding to the generated detection signal refers to a response signal in which the detection signal generated by the optical pickup unit 122b is reflected on the inner wall of the DCD 10 or the DCD drive 122a. The optical pickup unit 122b transmits the picked-up signal to the engine controller 128, and the engine controller 128 transmits the signal received from the optical pickup unit 122b to the controller 141. The controller 141 determines whether the DCD 10 is mounted on the DCD drive 122a based on the signal received from the engine controller 128 (S505). That is, the controller 141 determines whether the DCD 10 is mounted by using the fact that the signals picked up by the optical pickup unit 122b are different from the response signals reflected by the DCD 10 or the inner wall of the DCD drive. do.

If it is determined that the DCD 10 is not mounted on the DCD drive 122a, the controller 141 displays a message indicating that the DCD 10 is not mounted on the display unit 145 (S507). Accordingly, the user recognizes that the user inputs a command for recording / reading data without mounting the DCD 10 according to the message displayed on the display unit 145, and mounts the DCD 10 to the DCD drive 122b. You can do it.

If it is determined that the DCD 10 is mounted on the DCD drive 122a, the controller 141 transmits a control signal to the engine controller 128. When the engine control unit 128 receives the control signal from the control unit 141, the engine control unit 128 searches the engine memory 126 and moves to the position corresponding to the stored reference area for the case where the DCD 10 is normally mounted. ) Is moved (S509). The optical pickup unit 122b picks up the information from the DCD 10 at the position controlled and controlled by the engine control unit 128 (S511). The information picked up by the optical pickup unit 122b is transmitted to the engine controller 128, and the engine controller 128 transmits the information received from the optical pickup unit 122b to the controller 141. When the controller 141 receives the information picked up by the optical pickup unit 122b from the engine controller 128, the controller 141 determines whether the picked-up information corresponds to the reference region of the DCD 10 (S513).

If the picked-up information is not information corresponding to the reference region of the DCD 10, the controller 141 determines that the DCD 10 mounted on the DCD drive 122a is abnormally mounted, and the DCD 10 is DCD. A message indicating that the drive 122a is not normally mounted is displayed on the display unit 145 (S515). In addition, the control unit 141 extracts the DCD 10 abnormally mounted on the DCD drive 122a so that the user can normally remount the DCD 10 to the DCD drive 122a (S517).

If the picked-up information is information corresponding to the reference region of the DCD 10, the controller 141 calculates a position of data to be recorded / read out from the reference region set in the DCD 10 (S519). When the position of data to be recorded / read on the DCD 10 is calculated, the controller 141 transmits a control signal to the engine controller 128 so that the optical pickup unit can be moved to the calculated position. When the engine control unit 128 receives the control signal from the control unit 141, the engine control unit 128 moves the optical pickup unit 122b to the calculated position according to the received control signal (S521). The optical pickup unit 122b is controlled by the engine controller 128 to record data on the DCD 10 or to read data from the DCD 10 (S523).

The controller 141 determines whether an extraction command for the DCD 10 is input through the input unit 148 while recording data on the DCD 10 (S525). If an extraction command to the DCD 10 is input while data is being recorded, the controller 141 displays a user selection menu on the display unit 145 about whether to store or delete the data being recorded on the DCD 10. (S527). In this way, the user can select to save or delete the data being recorded in the DCD 10 according to the selection menu displayed on the display unit 145.

When a user's selection command for storing or deleting data being recorded in the DCD 10 is input through the input unit 148, the control unit 141 performs an operation process corresponding to the selected command to perform the engine unit 120 and the host. 140 is controlled (S529). This completes the recording / reading process of the data by the portable device.

Accordingly, the DCDP according to the present invention can reduce the possibility of malfunction or failure that may occur when data is written to the DCD or data is read from the DCD according to the mounting environment of the DCD mounted on the DCDP.

According to the present invention, it is possible to reduce the possibility of malfunction or failure that may occur due to a user command being input in a state where the recording medium is not mounted in the portable device, or when the recording medium is abnormally mounted.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the present invention is not limited to the specific embodiments of the present invention without departing from the spirit of the present invention as claimed in the claims. Anyone skilled in the art can make various modifications, as well as such modifications are within the scope of the claims.

Claims (12)

A portable device capable of recording / reading data on a detachably mounted recording medium, An input unit for inputting a user command to record / read the data; An optical pickup unit for accessing the recording medium to record / read data; And When the user command is input through the input unit, it is determined whether the recording medium is mounted, and when it is determined that the recording medium is mounted, the position of the data to be recorded / read from the reference area set in the recording medium is calculated. And a control unit which moves the optical pickup unit to the calculated position and controls the optical pickup unit to record / read the data from the moved position. The recording medium has a disc shape, and has a ring-type reference area occupying a predetermined area on the central side of the recording medium. The controller controls the optical pickup unit to generate a detection signal for whether the recording medium is mounted through the optical pickup unit, and determines whether the recording medium is mounted from a signal picked up in response to the detection signal. If it is determined that the recording medium is mounted, the controller moves the optical pickup to a position corresponding to the reference area stored for the case where the recording medium is normally mounted, and controls the optical pickup at the moved position. And if the picked-up information is not information corresponding to the reference area, determining that the recording medium is abnormally mounted and controlling the portable device to extract the recording medium. The method of claim 1, Further including a display unit, And if it is determined that the recording medium is not mounted by the pickup signal, the controller displays a message indicating that the recording medium is not mounted on the display unit. delete The method of claim 2, And if the control unit determines that the recording medium is abnormally mounted, the display unit displays that the recording medium is abnormally mounted. The method of claim 4, wherein The control unit may be configured to store or delete the data being recorded on the recording medium when an extraction command for the recording medium is input through the input unit while the optical pickup unit accesses the recording medium and records the data. And displaying the user selection menu on the display unit. A data recording / reading method of a portable device for a detachably mounted recording medium, Determining whether a user command for recording / reading of the data is input through an input unit; Controlling the optical pickup unit to generate a signal for detecting whether the recording medium is mounted through the optical pickup unit when the user command is input; Determining whether the recording medium is mounted from the signal picked up in response to the detection signal; And If it is determined that the recording medium is mounted, calculating a position of the data to be recorded / read from a reference area set in the recording medium; Moving the optical pickup to a calculated position; And And controlling the optical pickup unit to record / read the data from the moved position. delete The method of claim 6, And the recording medium has a disc shape, and has a ring-type reference area occupying a predetermined area on the central side of the recording medium. The method of claim 8, If it is determined that the recording medium is not mounted, displaying a message indicating that the recording medium is not mounted on the display unit; data recording / reading method of a portable device further comprising. The method of claim 9, If it is determined that the recording medium is mounted, moving the optical pickup unit to a position corresponding to the reference area stored for the case where the recording medium is normally mounted; Picking up information from the mounted recording medium by controlling the optical pickup unit at the moved position; Determining that the recording medium is abnormally loaded if the picked up information is not information corresponding to the reference area; And If it is determined that the recording medium is abnormally mounted, extracting the recording medium. The method of claim 10, And determining that the recording medium is abnormally mounted on the display unit, if it is determined that the recording medium is abnormally mounted. The method of claim 11, Determining whether an extraction command for the recording medium is input through the input unit while the optical pickup unit approaches the recording medium and records the data; And If the extraction command is input through the input unit, displaying on the display unit a user selection menu for storing or deleting the data being recorded; recording / reading data of a portable device Way.

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