JP2007048390A - Content information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a content information display device that solves the problem that when a number for determining the order of recording content files is given at the beginning of a file name, the number is displayed on a display unit.
A CPU determines whether or not a character is a number in order from the beginning of a file name, and determines whether or not a character is a delimiter when determining that the character is not a number. When the character is a delimiter, the display unit displays the file name from the character after the delimiter without displaying one or more numbers and the delimiter from the beginning.
[Selection] Figure 3

Description

  The present invention relates to a content information display device that displays content information recorded on a disc on a display unit.

  When a content file such as an MP3 file or a WMA file is recorded in a CD-R (Compact Disc-Recordable) directory using a PC application, most applications cannot specify the order in which the content files are recorded in the directory. . In such an application, the content file is recorded in the order of the character code of the file name of the content file. When a CD-R on which a content file is recorded is reproduced by a CD player, the CD player reproduces the content file in the order recorded in the directory. As a result, the content files cannot be recorded in the directory in the desired order, and the content files cannot be reproduced on the CD player in the desired order.

In order to solve this problem, the content files are recorded in the desired order in the CD-R directory by adding, for example, a two-digit number to the order in which the content files are to be recorded at the beginning of the file name of the content file. Can do. For example, if it is desired to record content files with file names “CCC”, “BBB”, and “AAA” in this order, the file names are set to “01 CCC”, “02 BBB”, and “03 AAA”. You can record content files in order. As shown in Table 1 below, the numerical character code is determined so that the character code increases as the number increases (the character code is 48 to 57 for the numbers 0 to 9). Content files are recorded in the numerical order (descending order) given to the beginning of the file name.

  However, when displaying the file name of the content file on the display unit of the CD player, the file name including the first two digits such as “01 CCC”, “02 BBB”, “03 AAA” as the file name Will be displayed. The first number is assigned to determine the order in which the content files are recorded in the directory, and is not desired to be displayed on the display unit by the user. Furthermore, when such a file name is displayed on a display unit where the number of displayable characters is limited, there are cases where the entire file name cannot be displayed due to the display of the first number.

JP 2004-127332 A

  An object of the present invention is to provide a content information display device that solves the problem that, when a number that determines the order in which content files are recorded is given at the beginning of a file name, the number is displayed on the display unit. It is.

  A content information display device according to a preferred embodiment of the present invention displays a plurality of content files and a reading unit that reads the content information from a recording medium on which the content information related to the content file is recorded, and the content information read by the reading unit Display means. When one or more characters from the top of the content information are numbers, the display means displays the content information excluding the one or more numbers from the top.

  In a preferred embodiment, the content display device further includes character determination means for determining whether the character is a number in order from the top of the content information. The display unit displays the content information based on the determination result by the character determination unit.

  In a preferred embodiment, when the character determining means determines that the character is not a number, the character determining means determines whether or not the character is a delimiter. When it is determined that the character is a delimiter, the display means displays the content information without displaying one or more numbers from the top and the delimiter.

  In a preferred embodiment, when it is determined that the character is not a delimiter, the display means displays the content information from the first character.

  In a preferred embodiment, the character determining means further determines whether or not all characters of the content information are numbers. When it is determined that the characters of the content information are all numbers, the display means displays the content information from the first character. When it is not determined that the characters of the content information are all numbers and one or more characters from the beginning of the content information are numbers, the display means excludes the one or more numbers from the beginning. The content information is displayed.

  In a preferred embodiment, the character judging means further judges whether or not a predetermined number of characters are all numerals from the top of the content information. When it is determined that the predetermined number of characters are all numerals from the top of the content information, the display means displays the content information from the top character. When it is not determined that the predetermined number of characters from the beginning of the content information are all numbers and one or more characters from the beginning of the content information are numbers, the display means The content information excluding a plurality of numbers is displayed.

  In a preferred embodiment, the plurality of content files and the content information are recorded in one or a plurality of directories. The content information display device further includes means for determining whether or not there is a predetermined number or more of content information whose first character is a number among content information relating to a plurality of content files recorded in one directory. When it is determined that there is a predetermined number or more of content information whose first character is a number, when the one or more characters from the beginning of the content information are numbers, the display means displays one or more numbers from the beginning. The content information excluding is displayed. When it is determined that the content information whose first character is a number is less than a predetermined number, the display means displays the content information from the first character.

  In a preferred embodiment, the content information is a file name of the content file and / or a directory name of a directory in which the content file is recorded.

  When one or more characters from the beginning of the content information are numbers, the display means displays the content information excluding the numbers, so a number for determining the order in which the content information is recorded is added to the beginning of the file name. Even if it is, the file name itself can be displayed without displaying this number. Therefore, it is possible to solve the problem that the entire file name cannot be displayed by displaying the first number on the display section where the number of displayable characters is limited.

  Hereinafter, a content information display device according to a preferred embodiment of the present invention will be described by taking a disk playback device (for example, a CD player) 10 to which the content information display device is applied as an example, but the present invention is not limited to these embodiments. It is not limited. FIG. 1 is a schematic diagram showing a data structure of a disc on which content information is displayed in the disc reproducing apparatus 10. The content information is information regarding the content file recorded on the disc, and is, for example, the file name of the content file and / or the directory name of the directory in which the content file is recorded (the file name will be described below). FIG. 2 is a schematic block diagram showing the disc playback apparatus 10.

  First, with reference to FIG. 1, the data structure of a disc (for example, a CD-R) on which a file name is displayed by the disc playback apparatus 10 will be described. The disc includes a lead-in area, a data area, and a lead-out area in order from the inner periphery side. The lead-in area is an area indicating the start of a session, and records track information of tracks included in the data area and TOC (Table Of Contents) information including the length (time) of the data area. The data area is an area for recording file names of content files (for example, music files, video files or image files) and content files. The lead-out area is an area indicating the end of the session.

  The content file and its file name are recorded in the data area by a hierarchical directory structure. The hierarchical directory structure includes a root directory RD that is the highest directory and a plurality of subdirectories SD1 to SD5 that are created under the root directory RD. In FIG. 1, the subdirectory SD1 includes lower subdirectories SD4 and SD5, the subdirectory SD4 includes content files A to C, and the subdirectory SD5 includes content files D to F. The file name of the content file is recorded in the immediately preceding (immediately higher) subdirectory. The directory name of the subdirectory is recorded in the immediately preceding (immediately higher) subdirectory or root directory. For example, the file names of the content files A to C are recorded in the subdirectory SD4, and the file names of the content files G to I are recorded in the subdirectory SD2. The directory names of the subdirectories SD4 and SD5 are recorded in the subdirectory SD1, and the directory name of the subdirectory SD1 is recorded in the root directory.

  Next, the configuration of the disc playback apparatus 10 will be described with reference to FIG. The disc playback apparatus 10 includes a system control unit 11, a display unit 12, an operation unit 13, a playback operation drive unit 14, a signal processing circuit 15, and a D / A converter 16.

  The system control unit 11 outputs a command to each unit of the disc playback apparatus 10 to control each unit, and includes a CPU 11a, a ROM 11b, and a RAM 11c.

  The CPU 11a reads various programs stored in the ROM 11b based on operation signals input from the operation unit 13, expands them in the work memory of the RAM 11c, and executes various processes according to the programs. Note that data transmission / reception between the CPU 11a and the outside is executed via an input port and an output port (not shown).

  The CPU 11a displays the file name of the content file read from the subdirectory on the display unit 12. At this time, the CPU 11a determines whether or not the characters are numbers in order from the top of the file name. As a result, if one or more characters are numbers from the top of the file name, the character information excluding these numbers is displayed. The file name is supplied to the display unit 12 and the file name excluding the numbers is displayed on the display unit 12. Further, the CPU 11a determines whether or not the character is a number in order from the top of the file name. If the character is not a number, the CPU 11a determines whether or not the character is a delimiter. The delimiter is a character that distinguishes the number that continues from the beginning of the file name and the file name itself (the original file name that does not include the number that determines the order in which the content files are recorded in the directory). Typical examples include spaces, hyphens, underbars, commas, slashes, dots, colons, and semicolons. When the character is a delimiter, the CPU 11a causes the display unit 12 to display only the file name body excluding the numbers and the delimiter. For example, when the file names are “01 CCC”, “02 / BBB”, and “03-AAA”, “CCC”, “BBB”, and “AAA” are displayed on the display unit 12.

  The ROM 11b stores an operation program and the like of the disk playback device 10. The ROM 11b is composed of a magnetic or optical recording medium or a nonvolatile memory such as a semiconductor.

  The RAM 11c forms a work area for temporarily storing a program read from the ROM 11b, data read from the disk, input or output data in each process executed by the CPU 11a.

  The display unit 12 includes an LCD (Liquid Crystal Display) or the like, and displays the file name of the content file and / or the directory name of the directory in which the content file is recorded based on the command and character information input from the CPU 11a. To do.

  The operation unit 13 includes various function keys such as a reproduction key, a numeric keypad, a SKIP UP / DOWN key, a stop key, and an EJECT key, and outputs an operation signal generated by the key operation to the system control unit 11. The operation unit 13 may output an operation signal by remote control to the system control unit 11.

  The reproduction operation drive unit 14 reads out the file name recorded in the subdirectory and supplies it to the system control unit 11. The reproduction operation drive unit 14 also reads out the content file recorded in the subdirectory and supplies it to the signal processing circuit 15. The reproduction operation drive unit 14 includes an optical pickup 14a and a servo circuit 14b. The reproduction operation drive unit 14 searches for a target address on the disk by a command input from the system control unit 11 and reproduces data corresponding to the address. The optical pickup 14a moves in the radial direction of the disk by a thread controlled by the servo circuit 14b, irradiates the disk with laser light, and converts the reflected light into an electrical signal, thereby recording data recorded on the disk. Read.

  The signal processing circuit 15 is configured by a DSP (Digital Signal Processor) or the like, and executes decoding processing on content file data read by the optical pickup 14a. Specifically, a decoding method (AAC decoding / MP3 decoding or the like) corresponding to the content file for each session is set by the CPU 11a, and decoding processing of the decoding method is executed.

  The D / A converter 16 converts the content data processed by the signal processing circuit 15 into an analog signal. The output of the D / A converter 16 is supplied to an amplifier device and a speaker connected to the outside via a sound output terminal (not shown) and reproduced as sound.

  With respect to the disc playback apparatus 10 having the above configuration, the file name display operation of the content file will be described with reference to FIG. In this example, it is assumed that when a number that determines the order in which content files are recorded is added to the beginning of a file name, a delimiter is inserted between the number and the file name body. . Conversely, if no delimiter is inserted, even if the file name starts with a number, the number is not the number that determines the order in which the content files are recorded, but the file name body.

  First, when a disc is inserted into the disc playback apparatus 10, the optical pickup 14 a reads out the file names of all content files recorded in each subdirectory and supplies them to the system control unit 11. The CPU 11a stores the supplied file name in the RAM 11c. Note that the file name may be read from the subdirectory each time a content file selection instruction is input from the user. When a content file selection instruction is input by the user via the operation unit 13, the CPU 11a executes the display process of FIG. 3 for the selected content file.

  The CPU 11a initializes the index C representing the display start character of the file name displayed on the display unit 12 to 1 (S1). Further, the CPU 11a initializes an index N for specifying a character for determining whether or not it is a number to 1 (S1).

  Next, the CPU 11a determines whether or not the Nth character of the file name is a number (S2). Here, since N = 1, it is determined whether or not the first character of the file name is a number. Whether or not it is a number is determined by whether or not the character code is 48 to 57 as shown in Table 1.

  When the Nth character is a number (S2: YES), the CPU 11a increments the index N (S3), and then determines whether the index N is larger than the number of characters in the file name (S4). That is, the CPU 11a determines whether or not all characters of the file name have been determined as numbers. When it is determined whether all the characters in the file name are numbers and all the characters in the file name are numbers, YES is obtained in S4.

  Here, since the index N is smaller than the number of characters in the file name (S4: NO), the CPU 11a next determines whether or not the index N is larger than a predetermined number (11 in this example) (S5). That is, the CPU 11a determines whether or not all the characters from the top of the file name to 11 characters are numbers. The predetermined number represents how many characters within a number are not displayed on the display unit when a number is added to the head of the file name. In other words, when the predetermined number is 11, when numbers within 10 characters from the beginning continue, these numbers are not displayed, but when numbers longer than 11 characters continue from the beginning, as will be described later , Display all these numbers.

  Here, since the index N is 11 or less (S5: NO), returning to S2, the CPU 11a determines again whether or not the Nth character is a number. That is, the CPU 11a repeats S2 to S5 to confirm whether or not the characters are numbers in order from the top of the file name.

  If the Nth character is not a number in S2 (S2: NO), the CPU 11a determines whether or not the Nth character is a delimiter (S6). Whether it is a delimiter or not can be determined by referring to the character code in the same manner as the determination of whether it is a number or not. When the Nth character is a delimiter (S6: YES), it is determined that the numbers from the top to the (N-1) th are numbers for determining the order in which the content files attached to the file name body are recorded. The As a result, the CPU 11a sets the index C to N + 1 (S7), and displays the file name from the Cth character on the display unit 12 (S8). That is, when the number continues from the top to the (N−1) th and the Nth is a delimiter, the display unit 12 does not display the N−1th number and the delimiter, but the N + 1th and subsequent characters. Show only. Therefore, only the file name main body can be displayed on the display unit 12 without displaying numbers and delimiters.

  In S6, when the Nth character is not a delimiter (S6: NO), that is, after the number from the beginning to the (N-1) th, the Nth character is neither a number nor a delimiter (for example, the file name is 123ABC In this case, the numbers from the top to the (N−1) th are not for determining the order in which the content files are recorded, but are determined to be characters of the file name body. The reason for this determination is that when the file name body includes a number at the beginning, it is generally considered that no delimiter is inserted between the number and a character other than the number. As a result, the CPU 11a displays all the file names on the display unit 12 in order from the first (C (= 1) th) character (S8). Therefore, when the number that continues from the beginning is a character of the file name body, the number is not removed and the file name can be displayed accurately.

  In S4, when the index N exceeds the number of characters of the file name (all characters of the file name are numbers, for example, the file name is 12345) (S4: YES), these numbers indicate the order in which the content files are recorded. Judge that it is a character of the file name itself, not a decision. The reason for this determination is that if these numbers are numbers that determine the order in which the content files are recorded, the file name body does not exist. As a result, the CPU 11a causes the display unit 12 to display all the numbers of the file names from the top (C (= 1) th character) (S8). Therefore, when all the file names are numbers, it is possible to prevent a problem that the file names are not displayed because the numbers are removed.

  In S5, when the index N exceeds 11 (the number 11 continues from the beginning of the file name), these numbers do not determine the order in which the content files are recorded, but are determined to be characters of the file name body. The reason for this determination is that it is not considered that a number that determines the order in which the content files are recorded is usually given, for example, 11 digits or more. As a result, the CPU 11a displays all characters of the file name on the display unit 12 from the top (from the C (= 1) th character) (S8). Therefore, when the number that continues from the beginning is a character of the file name body, the number is not removed and the file name can be displayed accurately.

  As described above, when the file name includes one or more numbers and delimiters from the beginning, only the file name main body can be displayed without displaying these numbers and delimiters.

  Check the file name of the content file recorded in the same subdirectory, and display the number and delimiter added from the beginning of the file name only when the first character of the file name more than the specified number is a number. You can avoid it. When a number that determines the order in which the content files are recorded is added to the head of the file name, this number should be appended to a plurality of file names. Therefore, if a predetermined number or more of file names are not prefixed with numbers, these numbers do not determine the order in which the content files are recorded, but can be determined to be characters of the file name body.

  This operation will be described with reference to FIG. The CPU 11a initializes an index I indicating the number of the content file recorded in a certain subdirectory (recording order) to 1 (S10). Further, the CPU 11a initializes an index J indicating the number of file names whose first character is a number to 0 (S10). The CPU 11a determines whether or not the first character of the file name of the content file specified by the index I is a number (S11). If the first character is not a number (S11: NO), the index I is incremented (S13), and the process proceeds to S14. On the other hand, if the first character is a number (S11: YES), the index J is incremented (S12), the index I is incremented (S13), and the process proceeds to S14.

  In S14, it is determined whether the index I is larger than the number of content files in the subdirectory (that is, whether all file names have been confirmed) (S14). If the index I is equal to or less than the number of content files (S14: NO), the process returns to S11 to determine whether the first character of the file name of the content file specified by the index I is a number (S11). When the index I is larger than the number of content files in the subdirectory (S14: YES), the CPU 11a determines whether the index J is equal to or greater than a predetermined number (that is, whether there are a predetermined number or more of file names whose first characters are numbers). It is determined whether or not (S15). If the index J is equal to or greater than the predetermined number (S15: YES), a flag indicating that the number attached to the file name body is not displayed is set to 1 (S16), and if the index J is less than the predetermined number (S15: NO), the flag is reset to 0 (S17). When displaying the file name, if the flag is set to 1, the display process shown in FIG. 3 is executed, and if the flag is reset to 0, the process of FIG. Displays the file name from the first character.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment. The number may be half-width or full-width. Further, the character code is not limited. When displaying the directory name of the directory in which the content file is recorded on the display unit 12, the same processing as described above can be executed. The recording medium is not limited to a CD-R or the like, and may be a flash memory, a memory card, a hard disk, or the like. Note that the program may be provided in the form of a program for causing a computer to execute the content information display device of the present embodiment and a recording medium on which the program is recorded.

  The present invention can be suitably employed in a disc playback apparatus that can display file names, directory names, and the like on a display unit.

It is a figure which shows the data structure of the disc by which content information is displayed with the disc reproducing | regenerating apparatus 10 by preferable embodiment of this invention. 1 is a block diagram showing a disc playback apparatus 10 according to a preferred embodiment of the present invention. 4 is a flowchart showing a file name display operation of the disc playback apparatus 10. 4 is a flowchart showing a file name display operation of the disc playback apparatus 10.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Disc reproducing | regenerating apparatus, content information display apparatus 11 System control part 12 Display part 14 Reproduction | regeneration operation drive part

Claims (8)

Reading means for reading the content information from a recording medium on which a plurality of content files and content information related to the content files are recorded;
Display means for displaying content information read by the reading means,
A content information display device in which, when one or more characters from the top of the content information are numbers, the display means displays the content information excluding the one or more numbers from the top. In order from the top of the content information, further comprising character determination means for determining whether the character is a number,
The content information display apparatus according to claim 1, wherein the display unit displays the content information based on a determination result by the character determination unit. If the character determining means determines that the character is not a number, it determines whether the character is a delimiter;
3. The content information according to claim 2, wherein, when it is determined that the character is a delimiter, the display unit displays the content information without displaying one or more numbers from the top and the delimiter. Content information display device.   The content information display device according to claim 3, wherein when it is determined that the character is not a delimiter, the display unit displays the content information from the first character. The character judging means further judges whether or not the characters of the content information are all numbers;
When it is determined that the characters of the content information are all numbers, the display means displays the content information from the first character,
When it is not determined that all the characters of the content information are numbers and one or more characters from the beginning of the content information are numbers, the display means excludes the one or more numbers from the beginning. The content information display device according to claim 2, wherein the content information is displayed. The character determination means further determines whether or not a predetermined number of characters are all numerals from the beginning of the content information;
When it is determined that the predetermined number of characters from the top of the content information are all numbers, the display means displays the content information from the top character,
If the predetermined number of characters from the beginning of the content information are not determined to be numbers, and one or more characters from the beginning of the content information are numbers, the display means displays one or more characters from the beginning. The content information display device according to claim 2, wherein the content information excluding the number is displayed. The plurality of content files and the content information are recorded in one or a plurality of directories;
Means for determining whether or not there is a predetermined number or more of content information whose first character is a number among content information related to a plurality of content files recorded in one directory;
When it is determined that there is a predetermined number or more of content information whose first character is a number, when one or more characters from the beginning of the content information are numbers, the display means displays one or more numbers from the beginning. Display the content information excluding,
The content information display device according to any one of claims 1 to 6, wherein when it is determined that the content information whose first character is a number is less than a predetermined number, the display means displays the content information from the first character.   The content information display device according to claim 1, wherein the content information is a file name of the content file and / or a directory name of a directory in which the content file is recorded.

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