JPS62149034A - Information recording medium - Google Patents

Abstract

PURPOSE:To allow a visually handicapped person to handle the titled medium the same as a normal person by providing an information area comprising rugged relief pattern on the surface of the information recording medium reproducing information. CONSTITUTION:The information area 16 made of a rugged relief pattern is provided to a space of a recording area 2 of an optical card 1 and a titled or the like of the content of recording on the area 2 is described raised letters. Further, a mark of raised letters identifying the front/rear side of the card 1 and a mark indicating the loading direction of the card 1 are formed to the area 16. Thus, a visually handicapped person discriminates the recording content or the like and can handle the card the same as a normal person.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an information recording carrier for reproducing information.

(Prior Art) In recent years, information has been reproduced using optical information recording carriers such as optical files and compact discs. Furthermore, recently, information reproduction using card-shaped optical information record carriers (hereinafter referred to as optical cards), which are more portable than these record carriers and have a relatively large capacity, has begun to attract attention. .

FIG. 4 is a schematic plan view showing an example of a recording format for an optical card, and FIG. 5 is a partially enlarged view thereof.

In both figures, a recording area 2 is provided on an optical card 1 which is a record carrier, and the recording area 2 is formed by a plurality of bands 3 arranged in an array. Furthermore, each band 3 is formed by arranging a large number of information tracks 4 (for example, 4,600), and each 1-rack 4 has an information capacity of about several tens to 100 bits (for example, 46 bits). The information track 4, as shown in FIG.
20, S I ~ Tsubu bit 21, Track number area 22
and a data area 23 (including parity bits for error correction). Further, each band is separated by a reference line (hereinafter referred to as R line) 5, and a home position HP, which is an access reference position, is provided at a corner of the optical card 1. Note that arrow A is the moving direction of the optical card 1 during reproduction, and arrow C is the information reading scanning direction by the optical head during reproduction.

FIG. 6 is a schematic diagram of an apparatus for reproducing an optical card having the above recording format.

In the same figure, the optical card 1 is rotated by the rotation mechanism 6 to
It is possible to move back and forth in the direction. Information recorded on the optical card 1 is read and reproduced track by track by an optical disk 11. First, light from a light source 7 such as an LED is focused by a lens system 8 to illuminate the optical card 1. The optical card 1
The image of the track is formed on a one-dimensional sensor array 10 by an imaging optical system 9. Thus, the electricity corresponding to the information recorded on track 4 (it number is sensor array 1
Output from 0. To access the target track on the optical card 1, first move the optical head 11 in the direction of arrow C based on the home position HP, and count the number of R lines 5 read by the optical head 11 at this time. Objective 1 - Select band 3 to which the rank belongs. Next, as the optical card 1 moves in the direction of the arrow, the track number area 22 of the information trunk imaged on the sensor array 10 is reproduced, and when the trunk number of the target track is detected, the data area 23 of the track is reproduced. Information is reproduced.

(Problems to be Solved by the Invention) However, although information recording carriers such as the optical cards mentioned above have a high recording density and are considered for a wide range of applications, they are difficult for visually impaired people to use. There has been a problem in that it is not possible to easily and reliably determine the content recorded on the information recording carrier, to determine whether it is front or back, or to determine the direction of insertion into a reproducing device.

The present invention was made for the purpose of solving the above conventional problems,
The aim is to provide information recording carriers that can be handled by visually impaired people in the same way as ordinary people.

(Means for Solving the Problems) As a means for solving the above problems, the present invention provides an information recording carrier for reproducing information, in which an information area portion is formed on the surface of the carrier by an uneven relief pattern. The gist of this document is that it has been established.

(Example) Hereinafter, specific examples of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing an optical card as an embodiment of the information recording carrier according to the present invention, and FIG. 2 is a partially enlarged view thereof.

In FIG. 1, 1 is an optical card, 2 is its recording area, 3 is a band, 4 is an information track, and 5 is an R line, which are the same as in FIG. 4 above. be. A plurality of consecutive tracks 4 are grouped together in the hand 3 to form a block 15, and a plurality of these blocks are arranged in the direction of arrow A to form a hand 1:3.

In this embodiment, the first block 15a of the first band is
is used as the directory area.

In the directory area, the names of all the data recorded in the recording area of the optical card 1, the length of each data, the number of the block containing the head of each data, and the position of the head of data in the block are recorded. There is. Incidentally, the last trunk 4a of the directory area 15a is used as a home position mark. On the other hand, in each block 15 other than the directory area 15a, the number of the block is recorded as address information in the leading trunk. Reference numeral 16 denotes an information area formed by an uneven relief pattern in the margin on the second side of the recording area;
For example, the title of the content recorded in the recording area 2 is written in Braille. Furthermore, information 19 j-IT
In the area section 16'', there are also formed in Braille marks for identifying the front and back sides of the optical card 1 and marks for indicating the insertion direction of the optical card 1.

In FIG. 2, the (Nl)th block, Nth block, and (N+1)th block of a certain hand are schematically shown in an enlarged manner. In this embodiment, as shown in the figure, the Mth data ends in the middle of the trunk 4 consisting of the Nth block, and recording of the (M+1)th data immediately continues on this track. has been done. In this way, there is no blank area in the recording area of the ninth card 1 of this embodiment, and the recording area is utilized as effectively as possible.

Next, an embodiment of the method for reproducing the information recording carrier will be described. Here, an optical card is used as an information recording carrier having the recording format shown in FIGS. 1 and 2, and a reproducing apparatus shown in FIG. 6 is used as a device for reading information from the round card.

First, the optical head 11 is moved in the direction of arrow C to access the band 3 including the directory area 15a. Next, the optical card 1 is moved in the direction of the arrow to read the information in the directory area 15a and read the home position mark 4a. For example, when accessing the (M+1)th data, the arrow 11 is moved to the light point 11 based on the information read from the directory area 15a.
By moving the optical card 1 in the direction indicated by the arrow and moving the optical card 1 in the direction indicated by the arrow, the beginning of the program N containing the beginning of the (M+1)th data is accessed, and the optical card 1 is further moved in the direction indicated by the arrow. This accesses the beginning of the (M+1)th data. When accessing the beginning of the (M+1)th data from the beginning of this block N, since the beginning position of the (M+1)th data is first read from the directory area, the number of times the information trunk of the sensor array 10 is scanned is Alternatively, it is performed by counting the number of information bits with reference to a clock signal.

The reading of the (M+1)th data is completed based on the data length information obtained from the directory area 15a.

FIG. 3 is a diagram showing an example of a device for reproducing information from an information recording carrier according to the present invention. The above information reproducing operation will be further explained using this figure.

The sensor array 10 of the optical nozzle 11 is driven by a sensor array driver 30, scans the image of the information track formed on the sensor array 10, and transmits the signal to the binarization circuit 3.
Enter 1. The output of the binarization circuit 3I is input to a clock regeneration circuit 32, and the clock signal, which is regenerated in the regeneration circuit, is output to a demodulation circuit 33 and a counter 34. The information signal is input from the binarization circuit 31 to the demodulation circuit 33, and the demodulation circuit demodulates the information signal based on the clock signal.

From a command input means 35 such as a keyboard to a controller 36
When a data reproduction command is input to the controller 3, the controller 3
Light head from 6! A drive command is issued to the second section movement means 37 and the optical card drive means 38, the optical head 11 accesses the directory area 15a of the optical card 1, and a drive command is issued from the controller I/roller 36 to the sensor array driver 30. is issued and the information in the directory area 15a is read. The information signal of the directory area 15a output from the demodulation circuit 33 is stored in the RAM 39 in the controller 36.

Next, in accordance with the name of the target data inputted from the command input means 35, the optical head drive means 37 and the optical card drive means 38 are driven based on the contents stored in the RAM 39 to access the beginning of the target data. At the same time, the controller 36 sends a counter 34 based on the memory contents of the RAM 39.
A command to count the data length of the target data is issued, and counting starts simultaneously with the start of reproduction of the target data. (Thus, the target data information signal demodulated in the demodulation circuit 33 is temporarily stored in the breadthreader memory 40,
In response to a command from the controller 36 based on the data length count result by the counter 34, the target data is output with an appropriate length. Here, since the information read from the optical card 1 is reciprocated, the signal is intermittent and lacks temporal continuity, so a buffer memory 40 is used to output the signal as a continuous signal. .

In the embodiments described above, since the directory area and the home position mark are formed continuously, the access operation of the optical head is performed efficiently.

As mentioned above, the optical card l has a large data information storage capacity and can be accessed quickly, so it can be used as an appropriate application for visually impaired people, for example, by storing reading information such as novels in the recording area 2. and write the title in Braille in the information area section 16. This eliminates the need for the laborious and time-consuming deciphering of traditional Braille books, and allows visually impaired people to obtain the same amount of information through their ears as normal people.

Further, in the embodiment, the information area section 16 is provided on the second side of the recording area, but the information area section 16 is not limited to this, and may be provided on the opposite side to the second side of the recording area, that is, on the back side.

(Effects of the Invention) As explained above, according to the present invention, by providing the information area section with the uneven relief pattern on the surface of the information recording carrier, it is possible for visually impaired people to record information on the information recording carrier. It becomes possible to easily and reliably determine the contents of the disc, the front and back sides, the direction of insertion into the playback device, etc., and has the excellent effect of allowing the user to handle the device in the same way as an ordinary person.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an optical card according to the present invention, Fig. 2 is a partially enlarged view thereof, Fig. 3 is a block diagram of a reproducing device for the optical card, and Fig. 4 is a conventional optical card. A schematic plan view showing the recording format of , Figure 5 is a partially enlarged view of
FIG. 6 is a block diagram of the optical card reproducing device. ■... Optical card, 2... Recording area, 3... Band, 4... Information track, 4a... Home position mark, 5... R line, 15... Band, 15a
. . . Directory area, 16 . . . Information area section. Agent Patent Attorney Jo Yamashita Hei 4 Figure 1 Figure 2 Figure 4 Figure 6

Claims (3)

[Claims] (1) An information recording carrier for reproducing information, characterized in that an information area consisting of an uneven relief pattern is provided on the surface of the carrier. (2) The information recording carrier according to claim 1, wherein the information recording carrier is card-shaped. (3) The information recording carrier according to claim 1, wherein the information area section is made of Braille for blind people.