OPTICAL CARD RECORDING APPARATUS

Abstract: The apparatus includes a card retainer (17) on a predetermined portion of which an optical card is placed. The retainer is moved by a driving arrangement (12,14,15,16,17G, 22,24,25) with respect to a fixed portion into a reference position (or a position removed from the reference position by a selectively determined distance). This movement is controlled in accordance with a preset transfer mode, which is set on the card retainer, so that recording tracks are formed on the card when, in a predetermined mode. An optical beam is applied to it.

Description: Technical Field The present invention relates to an optical card recording apparatus for causing a light beam, such as a laser light beam, to impinge upon a predetermined portion of an optical card loaded on the apparatus so as to write information on the optical card, and further as occasion demands, to read information from the optical card. Technical Background There has been proposed an optical card system in which an optical card available for optically writing information therein by means of, for example, a laser light beam is used for recording information and information written on the optical card is reproduced from the optical card by, for example a laser light beam. In the optical card system proposed previously and disclosed in, for example, Japanese patent application published before examination under publication No.60-229244, the optical card on which tracking guides are formed in a predetermined pattern is loaded on an optical card recording and reproducing apparatus. In the optical card recording and reproducing apparatus, the tracking guides provided on the optical card are detected and a position on the optical card upon which a light beam impinges is controlled in accordance with the tracking guides so that a tracking servo control of the light beam is carried out. Then, with the light beam subjected to the tracking servo control, writing of information in the optical card and reading of information from the optical card are performed. Further, in the optical card system proposed previously, the optical card is provided with address data recorded thereon beforehand, and the optical card recording and reproducing apparatus is operative to detect a position on the optical card in which information is to be written based on the address data read from the optical card and to write the information in the detected position on the optical card. In the optical card recording and reproducing apparatus used in the optical card system previously proposed as mentioned above, an error signal for the tracking servo control of the light beam is produced based on the tracking guides provided beforehand on the optical card and detected from the optical card and further the address data recorded beforehand on the optical card are read from the optical card to form reproduced address data when information is written in the optical card. In this connection, generally, the tracking guides are formed on the optical disc with, for example, a number of minute dots, each of which has its width of about 10µ and the address data are recorded on the optical disc in the form of alignment of a number of minute dots each having its width of about 10µ. This results in that the optical card recording and reproducing apparatus is required to read the minute dots for performing the tracking servo control of the light beam and for detecting the position on the optical card in which the information is to be written, and such reading of the minute dots by the optical card recording and reproducing apparatus easily receives a bad influence from scratches, dust or fingerprints on the surface of the optical card. Consequently, it is feared that the detection of the tracking guides and the reading of the address data from the optical card are not conducted accurately and therefore the tracking control of the light beam and the detection of the position in which the information is to be written are not carried out properly in the optical card recording and reproducing apparatus, and this makes the optical card hard to handle. Other prior art, corresponding to the precharacterising part of claim 1, is disclosed in US 4,398,223. This prior art discloses a system for recording and reproducing information relative to record card wherein the information is in the form of optically scannable parallel tracks. A narrow beam of radiation is caused to scan the surface of a record card, the beam being deflected to scan the recording track or the card being automatically moved parallel to the tracks to effect scanning by the beam. Disclosure of the Invention Accordingly, it is an object of the present invention to provide an optical card recording apparatus which is capable of causing a light beam to impinge upon a desired position on an optical card so as to write information in a record track formed on the optical card in a predetermined manner under a situation in which neither a tracking servo control of the light beam involving detection of tracking guides provided beforehand on the optical card nor detection of a position on the optical disc in which the information is to be written conducted based on address data read from the optical card on which the address data are recorded beforehand is carried out in the case where the optical card on which neither tracking guides nor address data have been actually provided or recorded in advance is used, and as occasion demands, of reading information written in the optical card. To achieve the end described above, the optical card recording apparatus according to the present invention comprises an optical card recording apparatus comprising: a member for holding an optical card, provided with a card supporting portion on which an optical card is loaded at a predetermined position, driving means for moving the card holding member, optical means for causing a light beam modulated in response to information and emitted therefrom to impinge upon an optical card loaded at said predetermined position, and movement control means operative to control the driving means, characterised in that it further comprises a fixed member on which the card holding member is mounted to be movable by the driving means in both first and second directions perpendicular to each other, in relation to the fixed member, reference position detecting means for detecting the card holding member positioned at a reference position in relation to the fixed member put there by the driving means under the control of the control means and then after a detection output of the reference position detecting means (31, 33) is obtained, moved under the control of the control means in the first and second directions in accordance with a predetermined moving manner from the reference position or a position at which the card holding member (17) is placed after moving from the reference position by a selected distance in one of the first and second directions, so as to put the optical card in a condition in which record tracks can be formed on the optical card in a predetermined manner with the light beam emitted from the optical means to be incident upon the optical card loaded at said predetermined position. One example of the optical card recording apparatus comprises further an information reproducing arrangement for causing another light beam to impinge upon the optical card in which information has been written to form the record tracks in order to read the information from the optical card. In the optical card recording apparatus thus constituted in accordance with the present invention, on the occasion of writing of information in the optical card, for example, first, the driving device is caused to operate by the movement control device to move the card holding member into the reference position, and the detection output of the reference position detector is obtained when the card holding member reaches the reference position. Then, after the detection output of the reference position detector is obtained, if the optical card is not loaded on the card supporting position, the movement control device causes the driving device to move the card holding member into a predetermined card loading and unloading position from the reference position and the optical card is loaded on the card supporting portion of the card holding member placed at the card loading and unloading position. After that, the movement control device further causes the driving device to move the card holding member accompanied with the optical card into the reference position or the position where is distant from the reference position by the predetermined distance in the first or second directions so that the card holding member is placed at a selected position to start writing the information in the optical disc. Then, under a condition in which the light beam from the optical device is continuously or intermittently incident upon the optical card loaded on the card supporting portion, the card holding member is moved in the first and second directions in the predetermined manner. Consequently, the information is written in selected portions of the optical card by the light beam emitted from the optical device to impinge upon the optical card to form the record tracks in the predetermined pattern on the optical disc. With the optical card reading apparatus according to the present invention, the information can be properly written in the record tracks formed at selected portions of the optical card under the situation in which neither tracking servo control of the light beam involving detection of the tracking guides provided beforehand on the optical card nor detection of a position on the optical disc in which the information is to be written conducted based on address data read from the optical card on which the address data are recorded beforehand is carried out. This results in that, with the optical card recording apparatus according to the present invention, generally, information can be appropriately written in record tracks formed exactly in a predetermined manner on selected portions of an optical card on which neither tracking guides nor address data have been provided or recorded in advance. Brief Description of the Drawings Fig. 1 is a schematic perspective view showing an essential part of one embodiment of optical disc recording apparatus according to the present invention; Fig. 2 is a schematic plan view showing an example of an optical card used in the embodiment shown in Fig. 1; Fig. 3 is a schematic side view showing a part of the embodiment shown in Fig. 1; Fig. 4 is a block diagram showing a control circuit section and other circuit portions connected to the control circuit section used in the embodiment shown in Fig. 1; Fig. 5 is an illustration used for explaining the operation of the embodiment shown in Fig. 1; and Figs. 6-(1) and 6-(2) show together a flow chart representing an example of a control program carried out for an information writing operation by a microprocessor employed as a controller in the embodiment shown in Fig. 1. Embodiment most preferable for Working of the Invention Fig. 1 shows an essential part of en embodiment of optical card recording apparatus according to the present invention. In the embodiment shown in Fig. 1, a fixed member 11 formed into a frame structure comprises a pair of guide portions 11A and 11B disposed in parallel with each other and a connecting portion 11C interconnecting therethrough one end of the guide portion 11A and one end of the guide portion 11B. At the inside of the fixed member 11, a sliding member 12 formed into a frame structure along the fixed member 11 is provided. The sliding member 12 comprises a pair of engaging portions 12A and 12B disposed in parallel with each other, an end connecting portion 12C interconnecting therethrough one end of the engaging portion 12A and one end of the engaging portion 12B, and an intermediate connecting portion 12D interconnecting therethrough a middle of the engaging portion 12A and a middle of the engaging portion 12B. The outer side of the engaging portion 12A engages with the inner side of the guide portion 11A of the fixed member 11 and the outer side of the engaging portion 12B engages with the inner side of the guide portion 11B of the fixed member 11 so that the engaging portions 12A and 12B are disposed to be slidable against the guide portions 11A and 11B respectively in an X direction indicated by an arrow X in Fig. 1 along each of the guide members 11A and 11B. With such engagements, the sliding member 12 in its entirety is supported by the fixed member 11 to be slidable in the X direction. A fixed plate member 13 is disposed between the engaging portions 12A and 12B on the outside of the intermediate connecting portion 12D. A motor 14 is mounted on the fixed plate member 13 and a gear 15 attached to a rotating shaft of the motor 14 is engaged with a rack 16 provided on the other end of the engaging portion 12B. Therefore, the sliding member 12 is moved to slide against the fixed member 11 when the motor 14 is actuated. Further, in a space surrounded by the engaging portions 12A and 12B, end connecting portion 12C and intermediate connecting portion 12D of the sliding member 12, a card holding member 17 is supported by a pair of guiding bars 17G which extend in parallel with each other in a Y direction perpendicular to the X direction, as indicated by an arrow Y in Fig. 1, between the,engaging portions 12A and 12B to be movable against the sliding member 12 in the Y direction under the guidance by the guiding bars 17G. The card holding member 17 is provided thereon with a card supporting portion 17A on which an optical card 18 is loaded, so that the optical card 18 is placed at a predetermined loading position on the card holding member 17. A driving roller 19 and an idle roller 20 are mounted on the card holding member 17 in parallel with each other to contact with an upper surface of the optical card 18 loaded on the card supporting portion 17A and a motor 21 for rotating the driving roller 19 is also mounted on the card holding member 17. The optical card 18 is moved in the Y direction by the driving roller 19 rotated by the motor 21 to enter the card supporting potion 17A from the side of the engaging portion 12A and to removed from the card supporting portion 17A toward the side of the engaging portion 12A, and the idler roller 20 is rotated by the optical card 18 moving in the Y direction. A rack 22 is formed on a side of the card holding member 17 to face an inner side surface of the intermediate connecting portion 12D and a gear 25 attached to a rotating shaft of a motor 24 is engaged with the rack 22. The motor 24 is mounted on a bracket 23 which is attached to an under surface of the intermediate connecting portion 12D. Therefore, the card holding member 17 is moved against the sliding member 12 in the Y direction when the motor 24 is actuated. The connecting portion 11C of the fixed member 11 is provided with a limit switch (LS) 26 which is operative to come into contact with an outer side surface of the end connecting portion 12C for detecting a positional limit for the sliding member 12 on the side of connecting portion 11C in the X direction when the sliding member 12 is mover toward the end connecting portion 12C in the X direction, and a side of the fixed plate member 13 facing the intermediate connecting portion 12D is provided with a limit switch 27 which is operative to come into contact with an outer side surface of the intermediate connecting portion 12D for detecting a positional limit for the sliding member 12 on the side of the fixed plate member 13 in the X direction when the sliding member 12 is moved toward the fixed plate member 13 in the X direction. Further, an inner side surface of the engaging portion 12A is provided with a limit switch 28 which is operative to come into contact with a side of the card holding member 17 for detecting a positional limit for the card holding member 17 on the side of the engaging portion 12A in the Y direction when the card holding member 17 is moved toward the engaging portion 12A in the Y direction, and an inner side surface of the engaging portion 12B is provided with a limit switch 29 which is operative to come into contact with a side of the card holding member 17 for detecting a positional limit for the card holding member 17 on the side of the engaging portion 12B in the Y direction when the card holding member 17 is moved toward the engaging portion 12B in the Y direction. The inner side surface of the engaging portion 12A is further provided with a mirror 30 at a position on the outside of the intermediate connecting portion and a side of the fixed plate member 13 facing the inner side surface of the engaging portion 12A is provided with a photodetecting switch (PI) 31 which is positioned so as to face the mirror 30 when the sliding member 12 is moved against the fixed member 11 in the X direction and thereby the card holding member 17 is placed at a reference position in the X direction, and the side of the card holding member 17 facing an inner side surface of the intermediate connecting portion 12D is provided with a mirror 32 and the inner side surface of the intermediate connecting portion 12D is provided with a photodetecting switch 33 which is positioned so as to face the mirror 32 when the card holding member 17 is moved against the sliding member 12 in the Y direction to be placed at a reference position in the Y direction. The photodetecting switches 31 and 33 are operative to detect respectively the reference positions in the X and Y directions for the card holding member 17 in relation to the fixed member 11. The card holding member 17 contained therein a limit switch 34 which is operative to come into contact with an end of the optical card 18 placed properly at the card supporting portion 17A of the card holding member 17 for detecting the optical card 18 appropriately loaded on the card holding member 17. As shown in Fig. 2 for example, the optical card 18 which is to be loaded on the card supporting portion 17A of the card holding member 17 is provided on its recording area 18A with a plurality of sectors 18S arranged to form a plurality of lines each extending in the Y direction and a plurality of rows each extending in the X direction. Each of the sectors is formed with a large number of linear record tracks aggregated. An optical recording device comprising a laser. light source 35, collimator lens 36, a rotary mirror 38, driven by an actuator 37 and an objective lens 39 is disposed above the card holding member 17. The laser light source 35 emits a laser light beam modulated in response to information which is to be written in the optical card 18, and the laser light beam emitted from the laser light source 35 is collimated by the collimator lens 36 and reflected at the rotary mirror 38 to be directed to the object lens 39. Then, the laser light beam enters the objective lens 39 and focused thereby to impinge upon the optical card 18. The rotary mirror 38 is rotated clockwise and counterclockwise in a relatively narrow rotating angle range by the actuator 37 so that the laser light beam focused by the objective lens 39 is caused to scan the optical card 18 by a predetermined distance in the X direction repeatedly and simultaneously the optical card 18 is moved in the X and Y directions together with the card holding member 17. As a result, the information is written in the optical card 18 form the sectors 18S on the optical card 18. Further, an optical reproducing device which comprises a light source 40 composed of, for example, a light emitting diode, a converging lens 41, a focusing lens 42, mirror 43 and a line photosensor 44, as shown in Fig. 3, is disposed also upon the card holding member 17. In this this optical reproducing device, under a condition in which a light emitted from the light source 40 is caused by the converging lens 41 to be incident upon the optical card 18 placed on the card holding member 17, an image of each of the record tracks forming each sector 18S on the optical card 18 are projected through the mirror 43 on the line photosensor 44 by the focusing lens 42, and the information recorded in each record track is read by the line photosensor 44. In the embodiment shown in Fig. 1, in addition to the structural components mentioned above, a control circuit section 45 for controlling the motors 14, 21 and 24, the laser light source 35, the actuator 37, the light source 40 and the line photosensor 44 is provided on the outside of the connecting portion 11C of the fixed member 11. Fig. 4 shows an example of the control circuit section 45 and other circuit portions connected to the control circuit section 45 in a block diagram. The example of the control circuit section 45 shown in Fig. 4 contains therein a controller 50 comprising a microprocessor. The controller 50 is supplied with detection output signals Sa, Sb, Sc and Sd which are obtained from the limit switches (LS) 26, 27, 28 and 29, respectively, when each positional limit aforementioned is detected by the corresponding limit switch and a detection output signal Se which is obtained from the limit switch 34 when the optical card 18 positioned properly on the card supporting portion 17A of the card holding member 17 is detected by the limit switch 34. In addition, detection output signals Ia and Ib which are obtained from the photodetecting switches (PIs) 31 and 33, respectively, when the reference positions in the X and Y directions for the card holding member 17 are detected respectively by the photodetecting switches 31 and 33 are also supplied to the controller 50. Further, the controller 50 is connected with a command signal and data generator 51 provided on the outside thereof to be supplied with a writing command signal Cw, a reading command signal Cr, position designating data Da, and a card loading and unloading command signal Cc sent out from the command signal and data generator 51. Then, the controller 50 is operative to supply motor drivers 52 and 53 for driving the motors 14 and 21 respectively with pulse train signals Pa and Pb for causing each of the motors 14 and 21 to operate. Pulses forming the pulse train signal Pa are counted by a counter 56 which is controlled by a counter control signal Cx supplied from the controller 50 and on which initial value data supplied from an initial value data generator 54 are loaded, and similarly, pulses forming the pulse train signal Pb are counted by a counter 57 which is controlled by a counter control signal Cy supplied from the controller 50 and on which initial value data supplied from an initial value data generator 55 are loaded. Enumerated data Dx and Dy obtained from the counters 56 and 57 respectively are supplied to the controller 50. The controller 50 is operative also to supply a motor driver 58 for the motor 21 with a driving signal Pc for actuating the motor 21, a mirror driver 59 for actuator 37 with a driving signal Sm for causing the actuator to operate, and a laser driver 60 for the laser light source 35 with a driving signal Sℓ for causing the laser light source 35 to operate, and further simultaneously with the supply of the driving signal Sℓ to the laser driver 60, to supply a data memory 61 wherein information expected to be written in the optical card 18 is stored with an data control signal Cd. The data memory 61 delivers data Di for writing selected in response to the data control signal Cd to the laser driver 60. Incidentally, a detection output signal Sn corresponding to the clockwise and counterclockwise rotations of the rotary mirror 38 is obtained from the mirror driver 59 and supplied to the controller 50. The controller 50 is operative further to supply a track counter 62 with pulses Pt each of which is obtained whenever each of the record tracks forming each sector 18S on the optical card 18 is formed. The track counter 62 counts the pulses Pt supplied from the controller 50 and supplied the controller with a count detection signal St when the enumerated resultant reaches a predetermined value. Besides, the controller supplies a information reading portion 63 including the optical reproducing device shown in Fig. 3 with a group of control signals SR contained various control signals for controlling operations in the information reading portion 63. With such arrangements as described above, in the case of an information writing operation, first, the pulse train signals Pa and Pb are supplied from the controller 50 to the motor drivers 52 and 53 respectively in the control circuit section 45 and thereby the motors 14 and 24 are actuated. With the operations of the motors 14 and 24, the sliding member 12 is moved toward the connecting portion 11C of the fixed member 11 and the card holding member 17 is moved toward the engaging portion 12A of the Sliding member 12. When the sliding member 12 reaches the positional limit on the side of the connecting portion 11C in the X direction, the detection output signal Sa from the limit switch 26 is supplied to the controller 50, and further when the card holding member 17 reaches the positional limit on the side of the engaging portion 12A in the Y direction, the detection output signal Sc from the limit witch 28 is supplied to the controller 50. After the detection output signals Sa and Sc are supplied to the controller 50, the controller 50 ceases to supply the pulse train signals Pa and Pb, and therefore the motor 14 is stopped so that the sliding member 12 is kept at the positional limit on the side of the connecting portion 11C in the X direction and the motor 24 is also stopped so that the card holding member 17 is kept at the positional limit on the side of the engaging portion 12A in the Y direction. Next, the pulse train signals Pa and Pb which are of different contents from those mentioned above are again supplied from the controller 50 to the motor drivers 52 and 53 respectively and thereby the motors 14 and 24 are actuated, so that the sliding member 12 is moved toward the fixed plate member 13 and the card holding member 17 is moved toward the engaging portion 12B of the sliding member 12. When the sliding member 12 reaches the reference position in the X direction, the detection output signal Ia from the photodetecting switch 31 is supplied to the controller 50, and further when the card holding member 17 reaches the reference position in the Y direction, the detection output signal Ib from the photodetecting switch 33 is supplied to the controller 50. After the detection output signals Ia and Ib are supplied to the controller 50, the controller 50 ceases to supply the pulse train signals Pa and Pb, and therefore the motor 14 is stopped so that the sliding member 12 is kept at the reference position in the X direction and the motor 24 is also stopped so that the card holding member 17 is kept at the reference position in the Y direction. In such a condition, the controller 50 sends out the counter control signals Cx and Cy for causing the counters 56 and 57 to have the initial value data obtained from initial value data generators 54 and 55 to be loaded on the counters 56 and 57 respectively. After that, the controller 50 supplies the motor drivers 52 and 52 with the pulse train signals Pa and Pb respectively in accordance with the card loading and unloading command signal Cc from the command signal and data generator 51, and then ceases to send out the pulse train signal Pa after the enumerated data Dx obtained from the counter 56 comes to represent a predetermined value and ceases also to send out the pulse train signal Pb after the enumerated data Dy obtained from the counter 57 comes to represent a predetermined value. Accordingly, the motor 14 is rotated in accordance with a predetermined number of pulses forming the pulse train signal Pa and the motor 24 is rotated in accordance with a predetermined number of pulses forming the pulse train signal Pb, so that the card holding member 17 is moved along the X direction by a predetermined distance from the reference position in the X direction and also along the Y direction by a predetermined distance from the reference position in the Y direction. As a result of the movements thus caused, the card holding member 17 is moved into a card loading and unloading position. Then, the optical card 18 is loaded on the card supporting portion 17A of the card holding member 17 placed at the card loading and unloading position. In such loading of the optical card 18, the driving signal Pc is supplied from the controller 50 to the motor driver 58 for actuating the motor 21 and thereby the driving roller 19 is rotated to move the optical card 18 put to engage with the card supporting potion 17A toward the limit switch 34. When the optical card 18 which is driven by the driving roller 19 and guided by the idle roller 20 reaches a proper loading position on the card supporting portion 17A and comes into contact with the limit switch 34, the detection output signal Se from the limit switch 34 is supplied to the controller 50. After the detection output signal Se is supplied to the controller 50, the controller 50 ceases to supply the driving signals Pc, and therefore the motor 21 is stopped and the loading of the optical card 18 on the card supporting portion 17A is completed. If the optical card 18 has already been loaded on the card supporting portion 17A when the card holding member 17 is mover into the reference position in the X or Y direction, the loading of the optical card 18 is not carried out. After the optical card 18 is loaded properly on the card supporting portion 17A, the controller 50 stores target data DX corresponding to a position on the optical card 18 in the X direction designated by the position designating data Da from the command signal and data generator 51 and target data DY corresponding to a position on the optical card 18 in the Y direction designated also by the position designating data Da respectively in registers Gx and Gy contained therein, in response to the writing command signal Cw from the command signal and data generator 51. Such designations of the positions on the optical card 18 in the X and Y directions are achieved by designating both one of the lines and one of the rows of the sectors on the optical card 18. Next, the controller 50 supplies again the motor drivers 52 and 52 with the pulse train signals Pa and Pb respectively. Simultaneously with this, the controller 50 compares the enumerated data Dx obtained from the counter 56 which is counting the pulses forming the pulse train signal Pa with the target data DX stored in the register Gx and ceases to supply the pulse train signal Pa when the enumerated data Dx coincide with the target data DX, and also compares the enumerated data Dy obtained from the counter 57 which is counting the pulses forming the pulse train signal Pb with the target data DY stored in the register Gy and ceases to supply the pulse train signal Pb when the enumerated data Dy coincide with the target data DY. With such operations of the controller 50, the motor 14 is rotated in accordance with the pulses forming the pulse train signal Pa of a number selected in response to the position designating data Da and the motor 24 is rotated in accordance with the pulses forming the pulse train signal Pb of a number selected in response to the position designating data Da, so that the card holding member 17 is moved into a position corresponding to the position designating data Da from the card loading and unloading position. When the card holding member 17 is kept at the position corresponding to the position designating data Da, the optical card 18 on the card holding member 17 is positioned so that the laser light beam emanating through the objective lens 39 from the optical recording device is incident upon a position on the optical card 18 at which the first record track in one of the sectors 18S in the line and row designated by the position designating data Da is to be formed. Under such a condition, the controller 50 supplies the mirror driver 59 with the driving signal Sm and the mirror driver 59 causes the actuator 37 to operate in response to the driving signal Sm for rotating the rotary mirror 38 clockwise and counterclockwise. The detection output signal Sn corresponding to the clockwise and counterclockwise rotations of the rotary mirror 38 is supplied from the mirror driver 59 to the controller 50, and periods of time of the clockwise and counterclockwise rotations of the rotary mirror 38 are separately detected by the controller 50. During the period of time of the clockwise rotation of the rotary mirror 38, the controller 50 supplies the laser driver 60 with the driving signal Sℓ and the data memory 61 with the data control signal Cd. Accordingly, the data Di for writing selected to be read from the data memory 61 in response to the data control signal Cd is delivered to the laser driver 60 only during the period of time of the clockwise rotation of the rotary mirror 38, and the laser driver 60 operates in accordance with the driving signal Sℓ to cause the laser light source 35 to emit the laser light beam modulated in accordance with the data Di for writing. This laser light beam from the laser light source 35 is caused to impinge upon the optical card 18 through the collimator lens 36, the rotary mirror 38 and the objective lens 39 and scans the optical card 18 in the X direction in synchronism with the clockwise rotation of the rotary mirror 38. Consequently, each of the record tracks is formed to extend linearly in the X direction on the optical card 18 by the laser light beam incident upon the same only during the period of time of the clockwise rotation of the rotary mirror 38. The controller 50 supplies the motor driver 53 with the pulse train signal Pb during the period of time of the counterclockwise rotation of the rotary mirror 38, and therefore the motor 24 is rotated to move the card holding member 17 by a predetermined distance in the Y direction during the period of time of the counterclockwise rotation of the rotary mirror 38. As a result of the operations described above, as shown in Fig. 5, a number of record tracks T each extending in the X direction are formed successively at predetermined intervals in the Y direction at a position of one of the sectors 18S on the optical card 18 and the data Di for writing are written in the optical card 18. In such writing of the data Di, the pulse Pt which is obtained whenever each record track T is formed on the optical card 18 is supplied from the controller 50 to the track counter 62 and the number of the pulses Pt, namely, the number of the record tracks T is counted by the track counter 62. When the enumerated resultant of the track counter 62 reaches a predetermined value, for example, 256, in other words, when 256 record tracks T are formed on the optical card 18, the count detection signal St is supplied to the controller 50. In response to the count detection signal St, the controller 50 ceases to supply both the driving signals Sm and Sℓ and the data control signal Cd, so that the writing of information in one of the sectors 18S is completed. As a result, one of the sectors 18S including 256 recording tracks T each extending in the X direction at predetermined intervals, as shown in Fig. 5, is formed at the position on the optical disc 18 designated by the position setting data Da. In the case where other data are written in the optical card 18 successively, the controller 50 is supplied again with the writing command signal Cw from the command signal and data generator 51 and repeats the above described controls, and another sector 18S is formed at a position on the optical card 18 newly designated by the position designating data Da from the command signal and data generator 51, so as to be distant by a distance longer than a space between two adjacent record tracks from an adjacent sector in each of the X and Y directions. The controller 50 effecting the control operation as described above is constituted with, for example, a microprocessor, and one example of an operation program of such a microprocessor for controlling the writing of information is carried out in accordance with a flow chart shown in a divided manner in Figs. 6-(1) and 6-(2). According to the flow chart shown in Figs. 6-(1) and 6-(2), first, in decision 71, it is checked whether the detection output signals Sa and Sc are supplied from the limit switch 26 and 28 respectively or not. When at least one of the detection output signals Sa and Sc is not supplied, the pulse train signal Pa or Pb is supplied to the motor driver 52 or 53, or the pulse train signals Pa and Pb are supplied to the motor drivers 52 and 53, respectively, in process 72, and the step returns to the decision 71. When it is clarified in the decision 71 that the detection output signals Sa and Sc are supplied, it is checked whether the detection output signals Ia and Ib are supplied from the photodetecting switches 31 and 33 respectively or not, in decision 73. When at least one of the detection output signals Sa and Sc is not supplied, the pulse train signal Pa or Pb is supplied to the motor driver 52 or 53, or the pulse train signals Pa and Pb are supplied to the motor drivers 52 and 53, respectively, in process 74, and the step returns to the decision 73. When it is clarified in the decision 73 that the detection output signals Ia and Ib are supplied, that is, when the card holding member 17 is placed at the reference position in both the X and Y directions, the initial value data obtained respectively from the initial value data generators 54 and 55 are loaded on the counters 56 and 57, in process 75, and then it is checked whether the detection output signal Se is supplied from the limit switch 34 or not, in decision 76. When the detection output signal Se is not supplied, that is, when the optical card 18 is not loaded on the card holding member 17, it is checked whether the card loading and unloading command signal Cc is supplied from the command signal and data generator 51 or not, in decision 77. If the card loading and unloading command signal Cc is not supplied, the check in the decision 77 is repeated, and if the card loading and unloading command signal Cc is supplied, predetermined data LX and LY are stored in the registers Gx and Gy, respectively, in process 78. Then, the pulse train signals Pa and Pb are supplied to the motor drivers 52 and 53 respectively in process 79, and it is checked whether the enumerated data Dx obtained from the counter 56 is coincident with the data LX or not and further it is also checked whether the enumerated data Dy obtained from the counter 57 is coincident with the data LY or not, in decision 80. When it is clarified that the enumerated data Dx and Dy are not coincident with the data LX and LY respectively, the step returns to the process 79 and the check in the decision 80 is repeated. To the contrary, if it is clarified in the decision 80 that the enumerated data Dx and Dy are coincident with the data LX and LY respectively, that is, when the card holding member 17 has reached the card loading and unloading position, the driving signal Pc is sent out to the motor driver 58 in process 81 so that the optical card 18 caused to engage with the card supporting portion 17A is moved toward the limit switch 34. Then, it is checked whether the detection output signal Se is supplied from the limit switch 34 or not, in decision 82. When the detection output signal Se is not supplied, the step returns to the process 81 and the check in the decision 82 is repeated, and when the detection output signal Se is supplied, that is, when the optical card 18 has been properly positioned on the card supporting portion 17A, the step advances to decision 83. On the other hand, it is clarified in the decision 76 that the detection output signal Se is supplied, the step advances directly to the decision 83. In decision 83, it is checked whether the writing command signal Cw supplied from the command signal and data generator 51 or not. when the writing command signal Cw is not supplied, the check in the decision 83 is repeatedly, and when the writing command signal Cw is supplied, the target data DX corresponding to the position on the optical card 18 in the X direction designated by the position designating data Da and the target data DY corresponding to the position on the optical card 18 in the Y direction designated also by the position designating data Da are stored in the registers Gx and Gy, respectively, in process 84. Then, in decision 85, it is checked whether the enumerated data Dx obtained from the counter 56 is coincident with the target data DX or not and further it is also checked whether the enumerated data Dy obtained from the counter 57 is coincident with the data DY or not. When it is clarified that the enumerated data Dx and Dy are not coincident with the target data DX and DY respectively, the pulse train signals Pa and Pb are supplied to the motor drivers 52 and 53 respectively, in process 86, and the step returns to the decision 85. To the contrary, if it is clarified in the decision 85 that the enumerated data Dx and Dy are coincident with the target data DX and DY respectively, the driving signal Sm is sent out to the mirror driver 59 in process 87 so that the rotary mirror 38 is rotated clockwise and counter clockwise. After that, it is checked whether the rotary mirror 38 is in its clockwise rotation or not based on the detection output signal Sn obtained from the mirror driver 59, in decision 88. If it is clarified in the decision 88 that the rotary mirror 38 is in its clockwise rotation, the driving signal S and the data control signal Cd are supplied to the laser driver 60 and the data memory 61 respectively, in process 89, and the step advances to decision 91. To the contrary, if it is clarified in the decision 88 that the rotary mirror 38 is not in its clockwise rotation but in its counterclockwise rotation, the pulse train signal Pb is supplied to the motor driver 53, in process 90, so that the card holding member 17 is moved by a predetermined short distance in the Y direction, and the step advances to decision 91. In the decision 91, it is checked whether the count detection signal St is supplied from the track counter 62 or not. When the count detection signal St is not supplied, since one of the sectors 18S each including, for example, 256 record tracks has not been formed completely on the optical card 18, the step returns to the decision 88 and each of the decisions and processes succeeding in series to the process 87 is practiced repeatedly. On the other hand, when the count detection signal St is supplied, that is, when one of the sectors 18S each including 256 record tracks is completed, it is checked whether the writing of data is continued or not, in decision 92. If the writing of data is continued, the step returns to the decision 83 and each of the decisions and processes succeeding in series to the decision 82 is practiced in such a manner as mentioned above repeatedly, and if the writing of data is not continued, the program is terminated. Applicability for Industrial Use The optical card recording apparatus according to the present invention is especially suited to be applied for writing newly information in various optical cards used as, for example, an identification card, a credit card, a cash card and the like, and also for renewing information written in those optical cards.

Claims: 1. An optical card recording apparatus comprising: a member (17) for holding an optical card, provided with a card supporting portion on which an optical card is loaded at a predetermined position, driving means (12, 14, 15, 16, 17G, 22, 24, 25) for moving the card holding member (17), optical means (35, 36, 38, 39) for causing a light beam modulated in response to information and emitted therefrom to impinge upon an optical card loaded at said predetermined position, and movement control means (45, 51) operative to control the driving means (12, 14, 15, 16, 17G, 22, 24, 25), characterised in that it further comprises a fixed member (11) on which the card holding member is mounted to be movable by the driving means in both first and second directions perpendicular to each other, in relation to the fixed member (11), reference position detecting means (31, 33) for detecting the card holding member (17) positioned at a reference position in relation to the fixed member put there by the driving means under the control of the control means and then after a detection output of the reference position detecting means (31, 33) is obtained, moved under the control of the control means in the first and second directions in accordance with a predetermined moving manner from the reference position or a position at which the card holding member (17) is placed after moving from the reference position by a selected distance in one of the first and second directions, so as to put the optical card in a condition in which record tracks can be formed on the optical card in a predetermined manner with the light beam emitted from the optical means (35,36,38,39) to be incident upon the optical card loaded at said predetermined position. 2. An optical card recording apparatus according to claim 1, wherein said movement control means (45, 51) comprises a control circuit section (45) for controlling the operation of the driving means (12,14,15,16,17G,22,24,25) and the optical means (35,36,38,39), and a command signal and data generating section (51) for supplying the control circuit section (45) with a writing command signal, position designating data and a card loading and unloading signal. 3. An optical card recording apparatus according to claim 2, wherein said driving means (12,14,15,16,17G,22,24,25) includes a first motor (14) for moving the card holding member (17) in the first direction and a second motor (24) for moving the card holding member (17) in the second direction, and said control circuit section (45) includes a controller (50) operative to send out first and second pulse train signals for driving the first and second motors (14,24) respectively, a first counter (56) for counting pulses forming the first pulse train signal, and a second counter (57) for counting pulses forming the second pulse train signal. 4. An optical card recording apparatus according to claim 3, wherein said controller (50) includes a first register (Gx) in which first target data corresponding to a position in the first direction designated by the position designating data from the command signal and data generating section (51) and a second register (Gy) in which second target data corresponding to a position in the second direction designated by the position designating data from the command signal and data generating section (51), and is operative to compare enumerated data obtained from the first counter (56) with the first target data stored in the first register (Gx), to compare also enumerated data obtained from the second counter (57) with the second target data stored in the second register (Gy), and to control the supply of each of the first and second pulse signals in response to each result of comparison. 5. An optical card recording apparatus according to claim 3, wherein said control circuit section (45) includes a track counter (62) for counting pulses each of which is obtained whenever a record track is formed on the optical disc. 6. An optical card recording apparatus according to claim 1, wherein said optical means (35,36,38,39) comprises a light source (35) for generating the light beam modulated in accordance with information expected to be written in the optical card, and scanning means (38) for causing the light beam from the light source (35) to have reciprocated movements in opposite directions so that the light beam scans the optical card during a period of time of the movement thereof in one of the opposite directions so as to form record tracks on the optical card in a predetermined manner. 7. An optical card recording apparatus according to claim 6, wherein said movement control means (45,51) is operative to cause the driving means (12,14,15,16,17G,22,24,25) to operate for moving the card holding member (17) by a predetermined distance in one of the first and second directions during a period of time of the movement of the light beam from the light source (35) in the other of the opposite directions.

Inventors: OHKI, HIROSHI, SHINO, KUNINORI
Applicants: SONY CORPORATION
Application year: 1987
Main classification: G11B20
IPC codes: G11B7, G11B19, G11B17