KR20030056820A - Deck Check Switching Method of 3-CD Changer - Google Patents

Abstract

PURPOSE: A method for switching deck check of a 3-compact disk changer is provided to control a deck by only one switch by discriminating states of the deck by using the switch, thereby reducing the manufacturing cost and improving the reliability of the 3-compact disk changer. CONSTITUTION: A system control unit(10) controls driving of a deck unit(20) according to states of the deck unit. The deck unit includes a switch(28) changing according to states of a door and a pickup deck of the deck unit. The system control unit recognizes values of the switch for discriminating the current state of a deck and controls the deck unit by applying appropriate values through an open terminal and a close terminal according to a target place of the deck. The deck unit is formed of the door for loading and unloading a CD, and the pickup deck mounted to move an optical pickup up and down. A motor(22) drives the door and the pickup deck. The driving of the motor and the deck is controlled by checking states of the deck in initial driving and driving according to state values and time check of the switch.

Description

Deck Check Switching Method of 3-CD Changer}

The present invention relates to a deck check switching method of a three-compact disc changer, and more particularly, to a three-compact disc for providing a deck control algorithm by determining the state of the deck with one switch in the 3-CD changer system. It relates to a deck check switching method of the changer.

In the conventional 3-CD changer, the system control unit 10 controls the driving of the deck unit 20 according to the state of the deck unit 20 as shown in the block diagram of FIG. 1. In other words, the deck portion 20 of the 3-CD changer includes first and second switches sw1 and sw2 that change depending on the state of the deck door and the pickup deck, and the first and second switches sw1 and sw2. The current control state can be determined by recognizing the value of the control unit 10. Appropriate values are applied by the system control unit 10 through the open terminal opmtr and the close terminal clmtr according to the target point of the deck. To control the deck unit 20.

The deck portion 20 of the 3-CD changer includes a door that is a tray for loading (close) or unloading (opening) a CD, and a pickup deck mounted to up or down an optical pickup. The deck is to be operated in accordance with the driving of one motor 22.

The driving of the door and the pickup deck in the 3-CD changer is the table of the values and states of the first switch sw1 and the second switch sw2 according to the door and the pickup deck of the deck unit 20 as follows. same.

<= Open Direction Close Direction => Pickup deck up up up up <=> down down down down door open open <=> close close close close open <=> close open sw1, sw2 00 01 11 01 11 10 00 condition One 2 3 4 5 6 7

In Table 1, the deck portion 20 is divided into seven states from state 1 (door open and pickup deck up state) to state 7 (door open and pickup deck down state). For convenience, when the deck moves in the state 1 direction from the state 7, the open direction is set. In this case, when the open terminal is applied as 'H' and the closed terminal is 'L' in the system control unit 10, the motor 22 is moved in this direction. Is driven. On the contrary, when the deck moves from the state 1 to the state 7 direction, it is set as the close direction. In this case, when the close terminal is applied as 'H' and the open terminal as 'L' in the system control unit 10, the motor 22 is moved in this direction. Is driven.

An algorithm for checking a system initial driving and a deck state during driving of the conventional 3-CD changer will be described with reference to FIGS. 2 to 6.

First, the algorithm for checking the deck state during the initial driving of the 3-CD changer sets the motor 22 direction of the deck unit 20 in the close direction and sets the open terminal opmtr of the control unit 10 to low (L). The close terminal (clmtr) is applied to the high (H) (S1), the deck is driven in the close direction from the first state to the seventh state (S2), the first and second input to the control unit 10 2 Read the value of the switch and check it (S3).

Next, it is determined whether the read first and second switch values are 00 (S4). If not, it is determined whether the first and second switch values are 01 (S5). In this way, the motor 22 is continuously driven (S6). In addition, it is determined whether the first and second switch values are 11 while the motor 22 is being driven (S5), and if it is 11, the motor 22 is continuously driven (S8). In addition, it is again determined whether the first and second switch values are 01 (S9). If it is 01, the current deck state is 4 (S10). If not, it is determined whether the first and second switch values are 10 (S11). 10, it is checked that the state of the current deck is 6 (S12).

When the first and second switch values are 00 in step S4, the time elapsed is set to t to continuously drive the motor 22 in the close direction (S13). At this time, it is determined whether the first and second switch values continue to be 00 (S14). If not, it is determined whether the first and second switch values are 01 (S15), and if it is 01, the current deck state is recognized as 1. (S16). In step S14, if the first and second switch values continue to be 00, it is determined whether the time elapsed t has elapsed (S17). If so, the state of the current deck is recognized as 7 (S18).

In step S5, if the first and second switches are not 01, it is determined whether the first and second switches are 11 (S19). Otherwise, if it is not 11, it is determined whether the first and second switches are 10 (S20). If it is, the state of the current deck is recognized as 6 (S21), and if it is not 10, a check error is indicated. In step S19, if the first and second switches are 11, the motor 22 is continuously driven in the close direction (S22), and it is determined whether the first and second switches are 10 while the motor is being driven (S23). If the current state of the deck is recognized as 6 (S24), if not 10 is determined whether the first and second switch is 01 (S25) is 01 and recognizes the state of the current deck as 4.

Next, as an algorithm for checking the deck state when the 3-CD changer system is being driven, the state check is continuously checked at the portion introducing the routine for driving the deck, wherein the direction of the motor 22 is one direction. It may be stop, open or close depending on the state, and check the current state according to the previous state.

First, by reading the current first and second switch values (S30), it is determined whether the previous state is 1 (S31), and if it is 1, it is determined whether the first and second switches are 00 (S32) and if the current deck is 00 Recognizes the state of as 1 (S33), and if it is not 00 determines whether the first and second switches are 01 (S34) to recognize the state of the current deck as 2 (S35), if not 01 indicates a check error.

In the step S31, if the previous state is not 1, it is determined whether the previous state is 2 (S36). If it is 2, it is determined whether the first and second switches are 01 (S37). If it is 2 (S38), if it is not 01, it is determined whether the first and second switches are 00 (S39). If it is not 00, if the current deck state is 1 (S40), if 00, the first and second switches are 11 If it is determined (S41), if 11, the state of the current deck is recognized as 3 (S42). If not, 3, a check error is indicated.

In step S36, if the previous state is not 2, it is determined whether the previous state is 3 (S43), and if it is 3, it is determined whether the first and second switches are 11 (S44). At step S45, if it is not 11, it is determined whether the first and second switches are 01 (S46). In step S46, if the first and second switches are 01, it is determined whether it is in the open direction (S47). In the close direction, the state of the current deck is recognized as 4 (S48), and in the open direction, the state of the current deck is recognized as 2. (S49).

In addition, in step S43, if the previous state is not 3, it is determined whether the previous state is 4 (S50). If the previous state is 4, it is determined whether the first and second switches are 00 (S51). The state is recognized as 4 (S52). If it is not 01, it is determined whether the first and second switches are 11 (S53). In step S53, if the first and second switches are 11, it is determined whether it is in the open direction (S54). In the open direction, the current deck state is recognized as 3 (S55), and in the close direction, the current deck state is recognized as 5 (S54). (S56).

In the step S50, if the previous state is not 4, it is determined whether the previous state is 5 (S57). If 5, it is determined whether the first and second switches are 11 (S58). Recognizes as 5 (S59), if not 11 determines whether the first and second switch is 01 (S61) and if it is 01 recognizes the current deck status as 4 (S61), if not 01, the first and second switch It is determined whether is 10 (S62), and if 10, the state of the current deck is recognized as 6 (S63). Otherwise, it is a check error.

In addition, in step S57, if the previous state is not 5, it is determined whether the previous state is 6 (S64). If the previous state is 6, it is determined whether the first and second switches are 10 (S67). The state is recognized as 6 (S68), if not 10, it is determined whether the first and second switches are 11 (S69). If 11, the state of the current deck is recognized as 5 (S70), and the first and second switches are If it is not 11, it is determined whether it is 00 (S71). If it is 00, the state of the current deck is recognized as 7 (S72).

In addition, in step S64, if the previous state is not 6, it is determined whether the previous state is 7 (S73). If the previous state is not 7, it indicates a check error, but if it is 7, it is determined whether the first and second switches are 00 ( S74), if it is 00, it recognizes the state of the current deck as 7 (S75), and if it is not 00, it is determined whether the first and second switches are 10 (S76), and if it is 10, it recognizes the state of the current deck as 6 (S77). , If not 10, indicates a check error.

As described above, in the conventional 3-CD changer system, deck control is performed by determining the state of the deck and controlling the motor by two switches indicating the deck state, that is, the door open / close and the pickup deck up / down states. Therefore, in the related art, since the deck state is determined by the two switches and the motor is controlled, the algorithm for control is complicated and the manufacturing cost is increased due to the application of the two switches.

The present invention is to solve the above problems, to reduce the two switches mounted on the deck portion to one, and to provide an algorithm that can easily determine the status of the deck and control the motor by one switch. Purpose.

1 is a block diagram of deck switching of a conventional 3-CD changer,

2 and 3 is a flow chart for checking the deck state during the initial drive of the conventional 3-CD changer,

4, 5 and 6 is a flow chart for checking the deck state during the operation of the conventional 3-CD changer,

7 is a block diagram of deck switching of a 3-CD changer according to the present invention;

8 and 9 are flowcharts for checking the deck state during the initial driving of the 3-CD changer according to the present invention;

10 and 11 are flow charts for checking the deck state during operation of the 3-CD changer according to the present invention;

12 and 13 are graphs for the classification of the deck state of the 3-CD changer according to the present invention.

♣ Explanation of symbols for main part of drawing ♣

10: control unit 20: deck unit

22: motor 24, 26, 28: deck status determination switch

In order to achieve the above object, the present invention provides an algorithm during initial driving and an algorithm during driving in accordance with a check of a state value and a time of one switch configured in the deck unit, whereby the control unit checks the state of the deck and the motor. It provides a deck check switching method of a three-compact disc changer for controlling the operation of the drive and the operation of the deck.

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

7 is a block diagram of deck switching of a 3-CD changer in accordance with the present invention.

In the present invention, it is possible to check the state by using only one of the first and second switches, which are existing state check switches, and the value and state of one switch according to the door and pickup deck of the 3-CD changer system deck unit. If you refer to the table as follows.

<= Open Direction Close Direction => Pickup deck up up up up <=> down down down down door open open <=> close close close close open <=> close open sw1, sw2 0 0 One 0 One One 0 condition One 2 3 4 5 6 7

In Table 2, the deck state is determined using only one switch value, and the open / closed according to the rest of the pickup deck and the door state is the same as in the related art.

In this way, a description will be given with reference to a flowchart for checking the deck state during the initial driving and the driving of the 3-CD changer in FIGS. 8 to 11.

First, the algorithm for checking the deck state during the initial driving of the 3-CD changer sets the motor 22 direction of the deck unit 20 in the close direction and sets the open terminal opmtr of the control unit 10 to low (L). The close terminal (clmtr) is applied to the high (H) (S101), the deck is driven in the close direction from the first state to the seventh state (S102), the first and second input to the controller 10 2 After reading the switch value, the value is checked (S103).

It is determined whether the read switch value is 0 (S104). If the switch value is 0, the motor is continuously driven in the close direction for the state transition time t (S105), and the state is waited for the state transition time t (S106).

During the state transition time, it is determined whether the switch value is 1 (S107). When the switch value is 0 instead of 1, the state transition time t is set again, and the motor is continuously driven in the close direction for the time t (S108). Wait for the conversion time t (S109).

During the state transition time, it is determined whether the switch value is 1 (S110). If the switch value is 1, the deck state is checked as 3 (S111). If the switch value is 0, the deck state is checked as 7 (S112).

Further, when the switch value is 1 in step S117, the state transition time t is set again, and the motor is continuously driven in the close direction for a time t (S113), and the state transition time t is waited (S114). If the switch value is 1, the deck state is checked as 4 (S116). If the switch value is 0, the deck state is checked as 6 (S117).

In step S114, when the switch value is not 0 and 1, the motor is continuously driven in the close direction for the state transition time t (S118), and the state is waited for the state transition time t (S119), and it is determined whether the switch value is 1 ( If the switch value is 1, the state of the deck is checked as 6 (S121).

In step S120, when the switch value is not 1 but 0, the state transition time t is set, and the motor is continuously driven in the close direction for the time t (S122), the state transition time t is waited (S123), and the switch value is again. If the switch value is 1, the deck state is checked as 5 (S125). If the switch value is 0, the deck state is checked as 7 (S126).

Next, as an algorithm for checking the deck state when the 3-CD changer system is being driven, the state check is continuously checked at the portion introducing the routine for driving the deck, wherein the direction of the motor 22 is one direction. It may be stop, open or close depending on the state, and check the current state according to the previous state.

First, by reading the current switch value (S130), it is determined whether the previous state of the switch is 1 or 2 (S131), and if the previous state of the switch is 1 or 2, it is determined whether the value is 1 ( If the switch value is 1, the state of the current deck is recognized as 3 (S133). If the switch value is not 1, the state of the current deck is recognized as 1 or 2 (S134).

Further, in step S131, if the previous state of the switch is not 1 or 2, it is determined whether the previous state is 3 (S135). If the previous state of the switch is 3, it is determined whether the switch value is 1 (S136). If the switch value is 1, the state of the current deck is recognized as 3 (S137). If the switch value is 0 instead of 1, it is determined whether the switch is open (S138). In step S139, the state of the current deck is recognized as 4 in the close direction (S140).

Further, if the previous state of the switch is not 3 in step S135, it is determined whether the previous state is 4 (S141). If the previous state of the switch is 4, it is determined whether the switch value is 0 (S142). In the case of 0, the state of the current deck is recognized as 4 (S143). If the switch value is 1 instead of 0, it is determined whether it is in the open direction (S144). S145), the state of the current deck is recognized as 5 in the close direction (S146).

Further, when the previous state of the switch is not 4 in step S141, it is determined whether the previous state is 5 or 6 (S147), and when the previous state of the switch is 5 or 6, it is determined whether the switch value is 0 (S148). If the switch value is 1 instead of 0, the current deck state is recognized as 5 or 6 (S149). If the switch value is 0, it is determined whether it is in the open direction (S150). Recognizes as 4 (S151), if the close direction recognizes the state of the current deck as 7 (S152).

In addition, if the previous state of the switch is not 5 or 6 in step S147, it is determined whether the previous state is 7 (S153). If not, a check error is indicated, and if it is determined that the switch value is 0 again (S154), In this case, the state of the current deck is recognized as 7 (S158). When the switch value is 1 instead of 0, the state of the current deck is recognized as 7 (S159).

In the present invention, in order to clarify the distinction between the states using one switch, first, referring to a graph showing the distinction between the states of 1 and 2 of FIG. Since it has changed, the current state is the beginning of 2. At this point, the time check starts. Further, the method of checking whether the position of ② has been reached is continuously checked whether the time checked from the point ① has reached the door opening time 't' + free time, and if the time is smaller than the above time, the state is 2, and the state is 1 Is determined.

In addition, in Fig. 12B, the position 1 may be determined as state 2 when the state 1 enters the state 2, and when some time (for example, 100 ms) has elapsed from the time when the deck is driven in the close direction from the state 1 position. . From this position, we start the time check of state 2.

Next, referring to the graph showing the division of the states of 5 and 6 of FIG. 13, the position of ① in FIG. 13A determines the time at which the switch changes from 0 to 1 as the start position of state 6, from which time is checked. Do The position of ② determines that state 5 has entered when the time starting from ① is more than 't' + free time. The position of ③ identifies state 5 as a fixed time (t ') from ②.

In addition, in Fig. 13B, the position of ① is state 5 from the time when the switch value is changed from 0 to 1, and after this time, the division up to the time point ② is measured by measuring the time to the position where the deck is down, and making the state 5 during that time. Recognize. The position of ② is determined to be state 6 from this time after the time measured by the experimental value has passed from ①. The position of ③ becomes state 7 when the switch drops from 1 to 0 again.

As described above, the deck check switching method of the 3-compact disc changer according to the present invention determines the state of the deck using two switches. In order to reduce the manufacturing cost of the product, and to implement a method of checking the time for each state, it provides the advantage that the deck can be sufficiently controlled by a single switch, and improves the reliability of the 3-compact disc changer. It may be sufficiently changed, converted, substituted and replaced by the above, but is not limited to the above.

Claims (3)

Deck check of a three-compact disc changer characterized by controlling the operation of the motor and the operation of the deck by checking the state of the deck during initial operation and during the drive according to the check of the state value and time of one switch configured in the deck section. Switching method. According to claim 1, Algorithm for checking the state of the deck during the initial drive of the deck portion, Set the motor direction of the deck portion in the close direction, apply the close terminal clmtr high (H) with the open terminal opmtr of the control part low (L), and the deck move in the close direction from the first state to the seventh state. Driving the controller to read the switch value input to the controller and then check the value; Determining whether the read switch value is 0; A third step of continuously driving the motor in the close direction for the state transition time t when the switch value is 0 in the second stage, and waiting for the state transition time t; A fourth step of determining whether the switch value is 1 in the third step; A fifth step of setting the state transition time t again when the switch value is 0 in the fourth step, continuing to drive the motor in the close direction for a time t, and waiting for the state transition time t; A sixth step of judging whether the switch value is 1 in the fourth step, if the switch value is 1, the deck state is checked as 3; if the switch value is 0, the deck state is checked as 7; A seventh step of setting the state transition time t again when the switch value is 1 in the fourth step, continuing to drive the motor in the close direction for a time t, and waiting for the state transition time t; An eighth step of judging whether the switch value is 1 in the seventh step, and if the switch value is 1, the deck state is checked as 4; if the switch value is 0, the deck state is checked as 6; A ninth step of continuously driving the motor in the close direction for the state transition time t when the switch value is not 0 and 1 in the second step, and waiting for the state transition time t; A tenth step of judging whether the switch value is 1 in the ninth step, and if the switch value is 1, checking the deck state as the sixth step; An eleventh step of setting the state transition time t when the switch value is 0 instead of 1 and continuing to drive the motor in the close direction for a time t and waiting for the state transition time t in the tenth step; In the eleventh step, it is determined whether the switch value is 1, and if the switch value is 1, the deck state is checked as 5, and if the switch value is 0, the deck state is checked as 7; Deck check switching method for 3-compact disc changer. According to claim 1, Algorithm for checking the state of the deck while driving the deck portion, A first step of reading a current switch value; A second step of determining whether a previous state of the switch is 1 or 2; When the previous state of the switch is 1 or 2, it is determined whether the value is 1, and when the switch value is 1, the state of the current deck is recognized as 3, and when the switch value is not 1, the state of the current deck is determined. A third step of recognizing 1 or 2; A fourth step of determining whether the previous state is 3 when the previous state of the switch is not 1 or 2 in the second step; A fifth step of determining whether the switch value is 1 when the previous state of the switch is 3 in the fourth step, and recognizing the state of the current deck as 3 when the switch value is 1; A sixth step of determining whether the switch is in the open direction when the switch value is 0 instead of 1, recognizing the state of the current deck as 2 in the open direction, and recognizing the state of the current deck as 4 in the close direction; A seventh step of determining whether the previous state is 4 when the previous state of the switch is not 3 in the fourth step; An eighth step of determining whether the switch value is 0 when the previous state of the switch is 4 in the seventh step, and recognizing the state of the current deck as 4 when the switch value is 0; A ninth step of determining whether the switch value is in the open direction when the switch value is 1 instead of 0, recognizing the current deck state as 3 in the open direction, and recognizing the current deck state as 5 in the close direction; A tenth step of determining whether the previous state is 5 or 6 when the previous state of the switch is not 4 in the seventh step; An eleventh step of determining whether the switch value is 0 when the previous state of the switch is 5 or 6 in step 10 and recognizing the state of the current deck as 5 or 6 when the switch value is 1 instead of 0; A twelfth step of recognizing a state of the current deck as 4 in the open direction and determining a state of the current deck as 7 in the close direction when the switch value is 0 in step 11; Determining whether the previous state is 7 when the previous state of the switch is not 5 or 6 in the tenth step; In the thirteenth step, if the switch value is 0, it is determined that the state of the current deck is 7 if it is 0, and if the switch value is 1 instead of 0, it is the 14th step of recognizing the current deck state as 7. Deck check switching method of a three-compact disc changer, characterized in that made.