Patent Abstract:
The invention provides an input device of the electronic cipher code lock and a corresponding input method thereof, wherein a signal device produces cipher code input information and converts said information into two groups of electrical pulse signals; a measurement and control device measures the electrical pulse signals, decides the order of the electrical pulse signals and calculates correspondingly such that said signals are converted into character sequences including the cipher code elements, and decides whether the current cipher code elements are confirmed to be inputted or not and decides whether the input of all the cipher code elements is completed or not; a confirmation device produces a conformation signal for inputting the cipher code elements; and a display device displays said character sequences and preset prompt information in a rolling and refreshing manner. The invention also provides a door lock handle and a panel of the cipher code lock for the chests and bags applying the above said input device of the electronic cipher code lock. In said input device of the electronic cipher code lock and the application thereof, the operation parts do not contact with the circuit, the reliability and the security protection performance have been improved significantly. Furthermore, the operation for inputting the cipher code and the operation for changing the cipher code are very convenient and intuitional.

Full Description:
TECHNICAL FIELD  
       [0001]     The present invention relates to an electronic cipher code lock, particularly, to an input device of the electronic cipher code lock, an input method used for the electronic cipher code lock, and the application of the input device of the electronic cipher code lock.  
       BACKGROUND ART  
       [0002]     To enable and to set the cipher code of a prior mechanical dial type cipher code lock are implemented by the mechanical linkage mechanism inside the cipher code lock. Accurate positioning is required for enabling the cipher code and setting the cipher code of such cipher code lock, particularly, it is more complicated to modify the cipher, in addition to that the lock body is required to disassemble, it is very difficult for the person who have not been trained professionally to complete the operation of setting the code. Furthermore, the amount of the cipher code keys of said method depends on the amount of the directive wheels inside the mechanical linkage mechanism. In order to obtain a large amount of cipher code keys, the amount of the directive wheels shall be increased so that the volume and the complexity of the structure will be increased. Therefore, people attempt more and more to use the electronic cipher code lock, which can be operated conveniently and has a compact structure.  
         [0003]     It has been disclosed in the U.S. Pat. No. 6,420,958 an electronic digital lock, it uses a dial coupled to a step motor, when rotating the dial, the signals are generated by the step motor, and are outputted to a microcomputer for counting process via a shaping circuit, and are displayed by a display device. When the rotation of the dial is stopped, the numbers displayed are inputted as a part of the cipher code combination. Since the structure of the step motor is complicated and the price is rather high, and the peripheral circuits, such as the shaping circuit, and the like, are required, therefore the manufacturing cost of such electronic digital lock is relatively high.  
         [0004]     Additionally, the input devices of dial type electronic cipher code locks have been disclosed in U.S. Pat. No. 4,745,784 and U.S. Pat. No. 4,899,562 respectively, they have the similar structure. The input device of the electronic cipher code lock comprises a dial, a contact tip which is fixed inside the dial and can be rotated together with the dial, and ten contact points which are distributed as a circle or a half circle corresponding to the moving track of the contact tip and connected to a circuit board. The dial is depressed axially when the dial is rotated to a certain calibration position, and an electrical signal is produced by the contact between the contact tip thereon and a certain contact point corresponding to said calibration position. The electrical signal of each of the contact points corresponds to a different number, and this number is confirmed as an element of the cipher code.  
         [0005]     An input device of the dial type electronic cipher code lock has also been disclosed in Japanese Patent P2000-73632. It comprises a conducting sheet fixed on the dial, and two groups of contact points, which contact with the conducting sheet and are distributed intermittently as a circle, and a conducting ring, which is connected electrically with the contact point groups and supplies the power thereto. When rotating the dial, the above two contact point groups are contacted and are turned on intermittently with and by the conducting sheet, and two groups of electrical pulse signals can be obtained from the output leads of the two groups of the contact points. The signals are processed and displayed as the cipher code elements. In this technical scheme, a confirmation device for confirming the cipher code is a button switch installed on the dial.  
         [0006]     The electrical signals representing the cipher codes are produced directly by employing the electrical contact method in the above said three kinds of input devices of the electronic cipher code lock, therefore a problem of the contact reliability may be caused. Particularly, in the input device of the electronic cipher code lock of the Japanese Patent P2000-73632, there is also the problem of the abrasion due to the contact friction. Furthermore, since the electrical signals representing the cipher code are inputted directly without isolation, the security protection performance is also insufficient.  
         [0007]     Furthermore, most of the prior cipher code locks are in the form of numeral keyboard, in most of the cases, the keyboard is installed on the panel of the lock body above the handle of the door lock. However, for a handle of cipher code lock disclosed in U.S. Pat. No. 6,378,344, the numeral keyboard is embedded in the handle of the lock, and the cipher code is inputted through the keyboard. Since the plane size of the keyboard is large, the volume of the handle is larger than that of a normal handle, thus, it will bring about an uncomfortable feeling when using said handle.  
         [0008]     Most of the prior cipher code locks used for the chests and bags are in the form of mechanical roller, as described above, the structure of the mechanical cipher code lock is complicated, and it is inconvenient to operate it. For example, for a mechanical combination lock used for the chests and bags as disclosed in the Chinese Patent ZL00261865.6, though it has four digit wheels and employs new structure to simplify the operation for changing the cipher code, but the disadvantages, such as the amount of the cipher code keys being small, the mechanical operation for changing the cipher code being complicated, still exist.  
       SUMMARY OF THE INVENTION  
       [0009]     The object of the invention is to overcome the disadvantages in the prior art and to provide an input device of the electronic cipher code lock, which has a high reliability and an excellent security protection performance, and the input and the set of the cipher code is simple and convenient.  
         [0010]     The invention also provides a cipher code lock handle including said input device of the electronic cipher code lock, and a panel for the cipher code lock used for the chests and bags, their structures are simple and compact, the amount of the cipher code keys is large, the volume is small and the operation for inputting the cipher code is intuitional and convenient.  
         [0011]     Another object of the invention is to provide an input method used for inputting the cipher code of an electronic cipher code lock, and the cipher code can be inputted reliably, safely and conveniently by this method.  
         [0012]     According to the first aspect of the invention, it provides an input device of an electronic cipher code lock, comprising: a signal device for producing cipher code input information and for converting said information into two groups of electrical pulse signals; a measurement and control device connected with said signal device for measuring the electrical pulse signals outputted from the signal device, deciding the order of the electrical pulse signals and calculating correspondingly such that said signals are converted into character sequences including the cipher code elements, and deciding whether said cipher code elements are confirmed to be inputted or not and deciding whether the input of all the cipher code elements is completed or not; a confirmation device connected with said measurement and control device and used for producing a conformation signal for inputting the cipher code elements to indicate that the input of the current cipher code element is confirmed; and a display device connected with said measurement and control device for displaying said character sequences and preset prompt information in a rolling and refreshing manner by the driving of said measurement and control device.  
         [0013]     Preferably, in the input device of the electronic cipher code lock of the invention, said confirmation device is a switch device, an electrical signal produced when it is closed allows said measurement and control device to confirm the current cipher code element displayed by said display device as a part of the input cipher code.  
         [0014]     Preferably, in the input device of the electronic cipher code lock of the invention, the measurement and control device is also used for deciding whether during a given timing period which starts each time when a signal is produced by a switch device, the timing period expires or not. If the timing period expires, then it decides that the input is during overtime.  
         [0015]     The preset information displayed by said display device is indicated by symbols, wherein the close and open states of the lock are indicated by a symbol having a padlock shape, the time at which the lock is opened on time or is delayed to be opened is indicated by a symbol having a clock shape, the code setting state is indicated by a symbol having a key shape, and low power of battery is indicated by a symbol having a battery shape, and the confirmation states of the respective parts of the cipher code are indicated in turn by the remaining dot symbols.  
         [0016]     The above input device of the electronic cipher code lock may be an input device of a dial type electronic cipher code lock. Wherein the signal device comprises: a panel body, a dial which is installed on said panel body and can be rotated freely, a drive shaft fixed at the center of said dial, a set of driving gears installed on said drive shaft, a driven gear which meshes with said driving gears, and a rotating coder connected with said driven gear on the same shaft. Wherein the measurement and control device is a programmed microcontroller, the display device is an information display screen, and the switch device is a photoelectric switch. Said microcontroller, coder, information display screen and photoelectric switch are provided on the same circuit board, said circuit board is provided within said panel body, and said microcontroller is connected electrically with said coder, information display screen and photoelectric switch respectively.  
         [0017]     Preferably, in the above said input device of the dial type electronic cipher code lock, the outer edge of said dial is a circular skirt-like fringe, the position of said photoelectric switch corresponds to the skirt-like fringe of said dial, when said dial is depressed, the light transmitted to the photoelectric switch is blocked by said skirt-like fringe, thereby a signal is produced by said photoelectric switch.  
         [0018]     Optionally, in the above said input device of the dial type electronic cipher code lock, the upper part and lower part of said panel body have a hunched ear edge like shape, and said panel body further comprises: grooves provided in back of said ear edge and matched with the fingers; a display window, which matches with the shape and size of said information display screen, and forms a oblique angle together with said information display screen for viewing effectively; and a guiding hole provided at the display window side of said panel body for inserting an emergency key.  
         [0019]     In the above said input device of the dial type electronic cipher code lock, it further comprises a reset spring installed axially within an internal hole provided in the drive shaft of said dial.  
         [0020]     Alternatively, in the above said input device of the electronic cipher code lock, concentric circle plane gullets are provided on the internal end face of said driving gear, and a blind hole is provided on said plane gullet at a position corresponding to said panel body, and a steel ball and a spring are installed in said blind hole, under the action of the spring, said steel ball contacts and matches with the concentric circle plane gullet of said driving gear.  
         [0021]     Furthermore, the above said input device of the electronic cipher code lock can also be an input device of a roller type electronic cipher code lock. Wherein the signal device is a roller device, it comprises: a roller, a coder which is coaxial with the roller, and an elastic bracket for supporting said roller. Wherein the measurement and control device is a programmed microcontroller, the display device is an information display screen, the switch device is a microswitch provided below the shaft extension of the roller. Said microcontroller is connected electrically with said coder, information display screen and microswitch, respectively.  
         [0022]     Preferably, in the above said input device of the roller type electronic cipher code lock, 1-bit or 2-bit number is displayed on the information display screen in an ascending order or descending order circularly rolling manner according to the rotation direction and angle of said roller. When the roller is depressed, the microswitch is actuated by the shaft extension of said roller, thereby the rolling display of said information display screen is stopped, so that the current number displayed is confirmed as a part of the cipher code. After releasing the depressed roller, said roller is reset by the elastic bracket.  
         [0023]     According to the second aspect of the invention, it provides a handle of the cipher code lock, which is hollow, and comprises: an input device of the roller type electronic cipher code lock of the invention, which is fixed within a cavity in said handle; a first window, which corresponds to said roller thereby said roller may be dialed and depressed, provided on the surface of the handle, a second window, which corresponds to said information display screen thereby the contents displayed may be viewed, provided on the surface of the handle; and a rotation shaft fixed in the handle with a through-hole used for the wires to be passed through provided therein. The input device of the electronic cipher code lock is connected with a cipher code identification device of the lock and a power supply, which are installed inside the core mechanism of the lock or installed at other position inside the door, via the wires.  
         [0024]     The invention further provides another handle of the electronic cipher code lock, said handle is hollow and comprises: a handle body, a panel and a transparent window cover. Said handle body comprises a rotation shaft fixed therein, and a through-hole provided inside said rotation shaft for allowing the connection wires to be passed through. The input device of the roller type electronic cipher code lock of the invention is installed within the panel body, a first window, which corresponds to said roller thereby said roller may be dialed and depressed, and a second window, which corresponds to said information display screen thereby the contents displayed may be viewed, are provided on said panel. Said transparent window cover is provided on a plane on which there is said second window. A hollowed region, which has the size and shape matching with said panel, is provided on the front surface of the handle body, thereby said panel can be embedded therein. Said handle of the cipher code lock is connected to a cipher code identification device and a power supply of the cipher code lock which are installed inside the core mechanism of the lock or installed at other positions inside the door via the wires.  
         [0025]     The invention further provides yet another handle of the cipher code lock, and it comprises: a handle body, a handle base and a panel. The microcontroller and information display screen in the above input device of the roller type electronic cipher code lock are installed inside the handle base, and the second window, which corresponds to said information display screen thereby the displayed contents may be viewed, is provided on the front surface of the base. The roller device in the input device of the electronic cipher code lock of the invention is fixed inside the panel body, and the first window having the size and shape matching with the roller thereby said roller may be dialed and depressed is provided on the surface of said panel. Wherein said handle is hollow, and a cavity matching with the size and shape of said panel is provided on its front surface, thereby said panel can be embedded therein. Said input device of the roller type electronic cipher code lock is connected to a cipher code identification device and a power supply of the cipher code lock which are installed inside the core mechanism of the lock or installed at other positions inside the door via the wires.  
         [0026]     According to the third aspect of the invention, it provides a panel of a cipher code lock for the chests and bags, the panel of the cipher code lock for the chests and bags is fixed on the external surface of the chest body. It comprises: an input device of the electronic cipher code lock of the invention installed within said panel body; a first window, matching with the size and shape of said roller thereby said roller may be dialed and depressed, provided on the surface of said panel; and a second window, matching with the size and shape of said information display screen and having a transparent window cover provided thereon thereby the displayed contents may be viewed, provided on said panel. Wherein said input device of the cipher code lock is connected to a cipher code identification device and a power supply of the cipher code lock which are installed inside the chest body via the wires.  
         [0027]     According to the fourth aspect of the invention, it provides a method for inputting the cipher code of a cipher code lock, and the method comprises the following steps: receiving rotation information of the dial or roller via a signal device and converting it into two groups of electric pulse signals; measuring, deciding and calculating said two groups of electric pulse signals by a measurement and control device, and further converting them into element sequence constituted by the cipher code; displaying character sequences including cipher code elements and preset information by a display device, wherein the rolling refreshing rate for displaying the character sequences including cipher code is a function of the signal frequency of said two groups of electric pulse signals, the element sequence of the cipher code is rolling refreshed in an ascending order or descending order manner, which corresponds to the rotation direction and angle of said dial or roller; when the input of the current cipher code element is confirmed, a confirmation signal for inputting the cipher code element is produced by a confirmation device; after said electrical signal is detected by the measurement and control device, the currently inputted cipher code element is confirmed; and the measurement and control device further decides whether the input of all of the cipher code elements is completed or not.  
         [0028]     Preferably, the above said input method for the cipher code further comprises the following steps: when a signal is produced by said confirmation device, a given timing period is started, after that, whether the timing period expires or not is decided by the measurement and control device, if the timing period expires, then it decides that the input is during overtime.  
         [0029]     By using the above said input device and input method of the electronic cipher code lock, it makes the input device of the electronic cipher code lock of the invention have simple structure, the input cipher code signals be isolated by using mechanic-electric or optical-electric isolation, no electrical contact exist between the operating parts and the circuits, therefore it improves significantly the reliability and the security protection performance. Furthermore, the operation for inputting cipher code and the operation for modifying cipher code are also very simple and intuitional.  
         [0030]     Particularly, when the input device of the electronic cipher code lock of the invention is a dial type, the above advantages will be more outstanding. Furthermore, the structure of the input device of the dial type electronic cipher code lock is novel and inimitable, and the way for the open operation of the cipher code lock further accords with the conventional operation custom.  
         [0031]     When the input device of the electronic cipher code lock of the invention is a roller type, its structure is more compact and its volume is smaller, it is convenient for applying it in a variety of situations. After applying it to the handle of the lock, the handle function and the cipher code input function as well as the display function of the cipher code and information can be integrated in one so that the disadvantage of the large volume of the handle of the electronic cipher code lock of the prior art is overcome. After applying it to the chests and bags, not only the amount of the cipher code key is large and the operation for modifying the cipher code becomes more simple and convenient, but also the comfortable feeling of the operation will be better than that of the mechanical roller type cipher code lock used for the chests and bags. 
     
    
     BRIEF DESCRIPTION OF APPENDED DRAWINGS  
       [0032]     The invention will be further described in detail by referring to the drawings and embodiments as follows. In the drawings, the same reference number indicates the same or corresponding parts. The above and other objects, features and advantages of the invention will become more apparent through the following description.  
         [0033]      FIG. 1  is a structure block diagram according to a first embodiment of the invention;  
         [0034]      FIG. 2  is a flow chart according to the first embodiment of the invention;  
         [0035]      FIG. 3  is a schematic structure diagram according to a second embodiment of the invention;  
         [0036]      FIG. 4  shows a structure of a driving gear in the second embodiment of the invention;  
         [0037]      FIG. 5  shows a structure of a dial in the second embodiment of the invention;  
         [0038]      FIG. 6  is a schematic plan diagram showing an information display screen in the second embodiment of the invention;  
         [0039]      FIG. 7  is a schematic structure diagram according to a third embodiment of the invention;  
         [0040]      FIG. 8  shows another alternative structure form according to the third embodiment of the invention;  
         [0041]      FIG. 9  shows an enlarged cross section structure of an elastic bracket in the third embodiment of the invention;  
         [0042]      FIG. 10  shows an enlarged cross section structure of an elastic bracket at another state in the third embodiment of the invention;  
         [0043]      FIG. 11  shows an external structure of a handle of cipher code lock according to the invention;  
         [0044]      FIG. 12  and  FIG. 13  exhibit commonly an internal structure of the handle of a cipher code lock as shown in  FIG. 11 ;  
         [0045]      FIG. 14  shows an external structure of another handle of cipher code lock according to the invention;  
         [0046]      FIG. 15  exhibits an internal structure of the handle of cipher code lock shown in  FIG. 14 ;  
         [0047]      FIG. 16  shows an external structure of another handle of cipher code lock according to the invention;  
         [0048]      FIG. 17  exhibits an internal structure of the handle of cipher code lock as shown in  FIG. 16 ;  
         [0049]      FIG. 18  shows an external structure of the panel of the lock for the chests and bags according to the invention; and  
         [0050]      FIG. 19  exhibits an internal structure of the panel of the lock for the chests and bags as shown in  FIG. 18 . 
     
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0051]     The input device, input method and the application of the electronic cipher code lock of the invention will be further described by incorporating several specific embodiments as follows.  
         [0052]     Input Device of the Electronic Cipher Code Lock  
         [0053]      FIG. 1  shows an input device of the electronic cipher code lock according to the first embodiment of the invention. As shown in the drawing, said input device of the electronic cipher code lock is composed of a signal device  2 , a measurement and control device  3 , a display device  4  and a confirmation device  5 .  
         [0054]     The signal device  2  can employ an electromechanical rotation coder, the rotor of the coder has a mechanical driving relationship with the dial and rotates following the dial. The coder has two code signal output terminals, when the dial rotates in a clockwise direction, the electrical pulse signal  11  outputted from the first output terminal keeps ahead; when the dial rotates in a counterclockwise direction, the electrical pulse signal  12  outputted from the second output terminal keeps ahead. The number of the pulses included in the two groups of electrical pulse signals is proportional to the angle through which the rotor of the coder has rotated, and the frequency of the pulse signals is proportional to the rotation rate of the rotor of the coder.  
         [0055]     The measurement and control device  3  is composed of a single-chip microcomputer and the peripheral circuits thereof, and a single-chip microcomputer having integrated RAM and ROM therein can be used for measuring the electrical pulse signals  11  and  12  outputted by the signal device  2 , deciding the order of said electrical pulse signals, and calculating correspondingly such that said signals are converted into character sequences including the cipher code elements, and deciding whether the current cipher code elements are confirmed to be inputted or not and deciding whether the input of all of the cipher code elements is completed or not. ROM stores the control program and the preset data information, RAM stores the data information, such as the measuring data, displaying data and other intermediate data; EEPROM is required to be set further, and the cipher code for opening the lock, the setting cipher code and the verification cipher code are stored therein in advance. The single-chip microcomputer comprises several I/O ports P 2 ˜P 6 , wherein the measurement and control device  3  receives the two groups of electrical pulse signals  11  and  12  converted by the signal device  2  via the ports P 2  and P 3 , the port  6  is connected with the confirmation device  5 , the port P 4  is connected with the display device  4 , the port P 5  can be connected optionally with the implementation device  7  of the electronic cipher code lock.  
         [0056]     As shown in  FIG. 1 , in order to achieve preferably the technical results of the invention, the confirmation device  5  in the present embodiment is a switch device, the close of the switch device  5  is controlled by the axial motion of the dial, when the dial is not depressed the switch device  5  is in a disconnection state, and when the dial is depressed the switch device  5  is closed, and the close action produces an electrical signal  13  at two terminals of the switch device  5 , said signal is directed to I/O port P 6  of the measurement and control device  3  as a confirmation signal for inputting an element of the input cipher code.  
         [0057]     Furthermore, in the input device of the electronic cipher code lock as shown in  FIG. 1 , each time when a signal is produced by the switch device  5  thereby starting a given timing period, said measurement and control device  3  decides whether a timing period expires or not, if the timing period expires, then it decides that the input is overtime.  
         [0058]     Said character sequence and preset prompt information are displayed by the display device  4  under the driving of the measurement and control device  3  in a roll refreshing manner. Wherein the preset information is indicated by symbols, with reference to  FIG. 6 , the close state and open state of the lock are indicated by a symbol having a padlock shape, the time at which the lock is opened on time or is delayed to be opened is indicated by a symbol having a clock shape, the code setting state is indicated by a symbol having a key shape, and low power of battery is indicated by a symbol having a battery shape, and the confirmation states of the respective parts of the cipher codes are indicated in turn by the remaining dot symbols.  
         [0059]     The operation principle and flow process of the input device of the electronic cipher code lock of the invention will be described in detail with reference to  FIG. 2 , they can be achieved by the program stored in ROM.  
         [0060]     As shown in  FIG. 2 , in step S 21 , the signal device  2  is rotated by the dial and electrical pulse signals  11  and  12  are produced, the two groups of signals are directed to the I/O ports P 2  and P 3  of the measurement and control device  3 , the measurement and control device  3  will be waked up from a low power consumption state regardless of which direction the dial rotates and changed to an operation state thereby turning on the display device  4 . Then, the first group of electrical pulse signals  11  and the second group of electrical pulse signals  12  are received by the I/O ports P 2  and P 3  of the measurement and control device  3 , and the measurement and control device  3  proceeds to the timing period under the control of the program, and the timing program begins timing from zero. Meanwhile, the input flow process of the entire electronic cipher code lock proceeds to step S 22 .  
         [0061]     As shown in the drawing, in step S 22 , the received electrical pulse signals  11  and electrical pulse signals  12  are measured by the measurement and control device  3 . Next, in step S 23 , the successive order of the electrical pulse signals  11  and  12  are decided by the measurement and control device  3 . If the electrical pulse signals  11  keep ahead, then an add operation will be performed for the change amount of the pulses measured currently and the accumulation sum of the amount of the pulses measured previously; if the electrical signals  12  keep ahead, then an subtraction operation will be performed for the change amount of the pulses measured currently and the accumulation sum of the amount of the pulses measured previously. Next, in steps S 24  and S 25 , after the above operation results are data processed by the measurement and control device  3 , the display device  4  is driven via the I/O port P 4  to display in a decimal number manner, and the display refresh rate of the above operation results is adjusted according to the proportional relationship of the measured frequency of the electrical pulse signals, meanwhile, the flow process proceeds to step S 26 .  
         [0062]     In step S 26 , the measurement and control device  3  detects firstly whether a signal is inputted at I/O port P 6 , if the electrical level signal  13  outputted from the switch device  5  is not detected, then the measurement and control device  3  detects in step S 27  whether the time counted by the overtime counting program expires or not. If the time counted by the overtime counting program has not expired, then it proceeds to step S 22 . If the time counted by the overtime counting program has expired, then it proceeds to step S 32 , and an overtime alarm signal is issued, meanwhile, an input overtime information is displayed by the display device  4 . If the measurement and control device  3  detects the electrical level signal  13  outputted by switch device  5 , after the cipher code element displayed currently on display device  4  is confirmed and stored into RAM, a cipher code receiving confirmation information is displayed by the display device  4  under the driving of the I/O port P 4 , meanwhile, the flow process proceeds to step S 28  to enter a new timing period.  
         [0063]     In step S 29 , the measurement and control device  3  counts the received cipher code elements which have been confirmed, and compares the counting result with a preset number, if the counting result is less than the set number, then it proceeds to step S 30 . In step  30 , the measurement and control device  3  stores the number displayed currently into RAM as a cipher code element, and next in step S 31 , the display device  4  is driven to display the cipher code input confirmation information, meanwhile, the flow process goes back to step S 22 . In step S 33 , after the measurement and control device  3  performs the operation of linking several cipher code elements, which have been inputted and confirmed, in sequence and they are stored into RAM again, the display device  4  displays the cipher code receiving completion information under the driving of the I/O port P 4 . At this time, the entire input flow process for the electronic cipher code lock is completed, other operation flow process can be entered selectively from step  34  as required.  
         [0064]     For example, the cipher code can be set through the above method steps for inputting the cipher code. The preset cipher code is inputted firstly such that the input device of the electronic cipher code lock of the invention enters a cipher code setting state, then a new cipher code for opening the lock can be inputted under said state to substitute the old cipher code, and the new cipher code can be used for opening the lock afterwards. The details can be referred to  FIG. 2 . In step S 34 , the cipher code for opening the lock and set cipher code, which are preset, are read from EEPROM, and are compared with the inputted cipher code. Then in step S 35 , whether the inputted cipher code is the same as the cipher code for opening the lock or not is decided. If they are the same, then it will proceed to step S 36 , and an open lock command will be issued to the implementation device  7 . Then in step S 37 , the implementation device  7  opens the closed lock device. If it is decided in step S 35  that they are different, then it will proceed to step S 38 , whether the inputted cipher code and the preset cipher code are the same or not is decided. If they are the same, then it will proceed to the cipher code setting flow process, otherwise, the display device  4  will display a cipher code error information in step S 39 .  
         [0065]     Input Device of the Dial Type Electronic Cipher Code Lock  
         [0066]     The input device of the electronic cipher code lock of the invention can also be produced specifically as a dial form as required, just as shown in the second preferred embodiment of the invention. As shown in  FIG. 3 , when it is produced as an input device of a dial type electronic cipher code lock, a signal device  2  comprises: a panel body  111 , a dial  101  which is installed on said panel body  111  and can be rotated freely, a drive shaft  102  fixed at the center of said dial  101 , a set of driving gears  103  installed on said drive shaft  102 , a driven gear  115  which meshes with said driving gear  103 , and a rotating coder  108  connected with said driven gear  115  on the same shaft. A measurement and control device  3  is a programmed microcontroller (hereinafter refer to as MCU)  106 , a display device  4  is an information display screen  110 , and a switch device  5  is a photoelectric switch  107 .  
         [0067]     In the above drawing, the MCU  106 , coder  108 , information display screen  110  and photoelectric switch  108  are provided on a circuit board  109 , said circuit board  109  is provided within said panel body  111 . A mechanical-electrical rotation coder can be used as the coder  108 . An infrared photoelectric switch is used as the photoelectric switch  107 , comprising a transmitter tube and a receiver tube. A single-chip microcomputer having ROM, RAM and several I/O ports is employed as the microcontroller, and the control program being installed in the ROM. The I/O ports on MCU are connected with the coder  108 , photoelectric switch  107 , and information display screen  110  respectively, wherein one I/O port is connected with the cipher code identification device of the cipher code lock for data communicating.  
         [0068]     The dial  101 , drive shaft  102 , driving gears  103 , driven gear  115 , and the rotor of the coder  108  constitute a simple driving system. Specifically, the cross section of drive shaft  102  is a regular polygon, one end of the shaft being fixed at the center of the dial  101 , a internal regular polygon hole is provided on the driving gears  103  for adapting the other end of the drive shaft  102  to be inserted into. A movable fit exists between a cylindrical face at one side of the driving gears  103  and the corresponding internal hole of the panel body  111 . The driven gear  107  meshes with the driving gears  115 , and a movable fit exists between two cylindrical faces of the driven gear  115  and the internal hole of the gear pressboard  117 , another internal hole of the panel body  111  respectively, the gear pressboard  117  is snapped on two supporting posts of the panel body  111 , the cross section of the shaft extension of the driven gear  115  is a regular polygon, the shaft extension as the drive shaft of the rotor of the coder  108  is inserted into the internal regular polygon hole of the rotor of the coder  108 . In this driving system, the function of the panel body  111 , gear pressboard  117 , and the like is supporting and the positioning.  
         [0069]     The dial  101  and drive shaft  102  can displace axially 2 to 4 mm, an internal hole  122  is provided axially at the movable end of the drive shaft  102 , and a reset spring  104  is provided in the hole. Two slot openings  118 , corresponding to the transmitter tube and receiver tube of the photoelectric switch  107 , are provided on the panel body  111 .  
         [0070]      FIG. 5  shows a structure of the dial in the second embodiment of the invention. As shown in the drawing, the internal edge of the dial  101  has a circular skirt-like fringe  123 , said skirt-like fringe corresponds to a position between the transmitter tube and the receiver tube of the photoelectric switch  107  on the circuit board  109 . When the dial  101  is depressed, the light signal of the photoelectric switch  107  is blocked by the skirt-like fringe  123 , causing the electrical signal outputted from the photoelectric switch  107  to change, and the electrical signal is transmitted to MCU  106 , when the change of the signal is detected by MCU  106 , the number displayed currently is confirmed and stored as a part of the cipher code. After releasing the external force for depressing the dial  101 , the dial  101  and drive shaft  102  are reset under the reset function of the reset spring  104 .  
         [0071]     The shape of driving gears  103  is shown in  FIG. 4 , a simple mechanism is constituted by a concentric circle plane gullet  121  provided on the internal end face of said driving gear, and a steel ball  114 , a spring  113  and a corresponding blind hole provided on said panel body  111 . Under the action of the spring  113 , said steel ball  114  contacts and matches with the concentric circle plane gullet  121  of said driving gear  103 , the function of which is: during the procedure of rotating the dial  101 , as the displayed number changes dynamically, a hand feeling, which synchronizes with the refresh of the displayed number, will be produced.  
         [0072]     An eight-segment nixie tube for displaying the prompt information symbols and two seven-segment nixie tubes for displaying number are provided on the information display screen  110 , as shown in  FIG. 6 , wherein the close state and open state of the lock are indicated by a symbol having a padlock shape, the time at which the lock is opened on time or is delayed to be opened is indicated by a symbol having a clock shape, the code setting state is indicated by a symbol having a key shape, low power of battery is indicated by a symbol having a battery shape, and the confirmation states of the respective parts of the cipher code are indicated in turn by the remaining dot symbols.  
         [0073]     The display face of the information display screen  110  is an oblique face, the oblique angle thereof makes user&#39;s line of sight be approximately perpendicular to the display face of information display screen  110  so that it accords with the principle of the human body engineering. The plane of the display widow of the panel body, which corresponds to the display face of the information display screen  110 , is also an oblique face having the same angle. A transparent window cover  116  is snapped on the plane on which there is the display window of said panel body.  
         [0074]     The upper part and lower part of said panel body  111  have a hunched ear like edge  105  to serve as a handle, and grooves are provided on the internal side (back part) of said ear like edge  105  and matched with the fingers so that the operation of opening the door is easy. Furthermore, an isomerism guiding hole  112  is provided at the display window side of said panel body for inserting a mechanical emergency key.  
         [0075]     During assembling, the circuit board  109  is fixed at other side of the panel body  111 , the cylindrical face of the driving gears  103  is installed into a corresponding hole on the panel body  111 , the cylindrical face at one end of the driven gear  115  which is meshed with the driving gears  103  is installed into a corresponding hole of the panel body  111 , the shaft extension thereof is inserted into an internal hole of the rotor of the coder  108 , a middle hole of the gear pressboard  117  is fitted with the cylindrical face at another end of the driven gear  115 , and the gear pressboard  117  is snapped by two supporting post on the panel body  111 , the steel ball  114  and spring  113  are installed into a corresponding hole on the panel body  111 , the drive shaft  102  is inserted into a polygon hole of the driving gears  103 , the position of another end of the reset spring  104  in the axial internal hole is limited by the face of the door of the safe, the circular skirt-like fringe at the internal edge of the dial  101  corresponds to the transmitter tube and receiver tube of the photoelectric switch  107  through two slot openings of the panel body  111 .  
         [0076]     The specific application of the input device of the dial type electronic cipher code lock of the present embodiment will be described as follows.  
         [0077]     The dial  101  is turned when it requires to open the lock, when the displayed two bits of number are the same as the first part of the preset cipher code for opening the lock, the turning will be stopped and the dial  101  will be depressed axially, at this time, the dot symbols distributed at the most lower part of the half circle on the information display screen  110  are illuminated, it indicates that the first part of the cipher code is confirmed and inputted, and the other parts of the cipher code is inputted according to the same method, during the procedure of confirming and inputting each part of the cipher code, the dot symbols distributed as a half circle on the information display screen  110  are illuminated in turn, after the last part of the cipher code is inputted, the entire cipher code is sent to the cipher code identification device of the cipher code lock by MCU  106 , the received cipher code is identified and decided by the cipher code identification device, if the decided cipher code result is true, then the lock will be opened by an electromotive driving device under the control of the cipher code identification device, and an open lock signal will be sent to MCU  106 , after the open lock signal is received by MCU  106 , the symbol having the padlock shape on the information display screen  110  is illuminated under its control.  
         [0078]     When it is required to reset the cipher code for opening the lock, firstly, the set cipher code is inputted via the above said steps of inputting and confirming the cipher code, when the set cipher code inputted is decided as true, the symbol having the key shape is illuminated, it indicates that it enters the cipher code setting state, at this time, a new cipher code for opening the lock can be inputted.  
         [0079]     When the voltage of the power supply of the cipher code lock measured by MCU  106  is lower than a prescribed value, the symbol having a battery shape is illuminated, prompting that it is required to change the battery.  
         [0080]     Input Device of the Roller Type Electronic Cipher Code Lock  
         [0081]     The input device of the electronic cipher code lock of the invention can also be produced specifically as a roller form as required, just as shown in the third preferred embodiment of the invention. As shown in  FIG. 7 , when it is produced as an input device of a roller type electronic cipher code lock, a signal device  2  is a roller device  201  (a part inside the dash line block in  FIG. 7 ), comprising: a roller  202 , a coder  212  which is coaxial with the roller  202 , and an elastic bracket  204  for supporting the roller  202 ; a measurement and control device  3  is a programmed microcontroller  208 ; a display device  4  is an information display screen  209 , and a switch device  5  is a microswitch  206  provided below the shaft extension of the roller  202 . The microcontroller  208  is connected electrically with the coder, the information display screen  209  and the microswitch  206  respectively.  
         [0082]     A photoelectric coder can be used as the rotation coder, it is composed of a photoelectric wheel  203 , and a light emitting diode and a phototriode  207  which are disposed at two sides of the photoelectric reel.  
         [0083]     The microcontroller  208  is composed of a single-chip microcomputer MCU, a memory RAM, and peripheral circuits. The control program are contained in MCU, several I/O ports of MCU are connected electrically with the roller device  201  and the information display screen  209  respectively, wherein another I/O port is connected electrically to the cipher code identification device of the cipher code lock for data communicating.  
         [0084]     Furthermore, a connector can be provided on the circuit board  211  so that MCU may be connected with the cipher code identification device of the cipher code lock and the power supply via the connector  210 .  
         [0085]     The roller device  201 , microcontroller  208 , information display screen  209 , and microswitch  206  can be installed on the same circuit board  211 , as shown in the drawing. And it may be also as shown in  FIG. 8  that the information display screen  209  and microcontroller  208  are installed on one circuit board  214 , and the roller device  201  and microswitch  206  are installed on another circuit board  217 , to adapt to different installation conditions. The connector  210  can also be disposed on the circuit board  214  as shown in  FIG. 7 , and meanwhile, the connectors  215  and  216  can also be disposed on the circuit board  217 , and the connectors  215  and  216  can be connected to each other via the wires  213 . Those skilled in the art should understand that the technical results of these two installation forms are the same.  
         [0086]     Returning back to  FIG. 7 , in the roller device  201 , the rotation direction and the rotated angle of the roller  202  are converted into electrical pulse signals via the photoelectric wheel  203  and light emitting diode and a phototriode  207 , said signals are directed into the I/O ports of MCU in the microcontroller  208 , and after processing by MCU program, the information display screen  209  is controlled to display in a rolling manner the numbers  0 - 9 . While the roller device  201  is depressed, the microswitch  206  disposed below its shaft extension  205  is actuated, then the electrical signals produced by the actuated microswitch  206  is directed to another I/O port of MCU as an input confirmation signal of the cipher code element, after deciding by the MCU program, the rolling display of information display screen  209  is stopped by the control of the microcontroller  208 , and the current displayed number is confirmed as a part of the cipher code.  
         [0087]     In the input device of the roller type electronic cipher code lock in the present embodiment, customized nixie tubes or liquid crystal display panel can be used as the information display screen  209 . As shown in  FIG. 7 , the displayed contents displayed and the function are the same as those in the input device of the dial type electronic cipher code lock in the second embodiment, only the bits of the displayed number and the order and the arrangement of the graphic symbols are different.  
         [0088]      FIG. 9  and  FIG. 10  show the enlarged cross section diagram of the elastic bracket  204  under two states, respectively. The structures of these two elastic brackets  204  are substantially the same.  
         [0089]     As shown in  FIG. 9 , the elastic bracket  204  is composed of a base  225 , a reset spring  227 , a Y type bracket  220 , wherein a circular shaft slot  221  matching with the shaft is provided on the top of the Y type bracket  220 , the size of an opening  222  of the shaft slot  221  is slightly smaller than the diameter of the shaft, when installing the shaft, the opening shall be spread slightly, after installing the shaft, the radial displacement is restricted by the opening, but it can rotate freely, shoulders provided on both ends of the roller  202  match the shaft slot  221  to restrict the axial displacement of the roller  202 . The base  225  is fixed on the circuit board  211 , and the reset spring  227  and the Y type bracket  220  are installed inside the base  225 , two snap hooks  224  are provided at the bottom of a cylindrical face where the Y type bracket  220  matches with the base  225 , two slide slots  226  for the Y type bracket  220  and the snap hooks  224  to go through favorably and two snap slots  228  (in  FIG. 10 ) arranged at an angle of 90 degrees with respect to the slide slots  226  are provided above a hole where the base  225  matches with the Y type bracket  220 .  
         [0090]     As shown in  FIG. 10 , the Y type bracket  220  and its snap hooks  224  are inserted into the hole in the base along the slide slot  226 , when arriving the bottom, the Y type bracket  220  is rotated by an angle of 90 degrees so that the snap hooks  224  and the snap slots  228  to be aligned, and under the action of the reset spring  227 , the snap hooks  224  move upwardly and is snapped into the snap slots  228 . In this way, the Y type bracket  220  is fixed.  
         [0091]     When the roller  202  is depressed, the Y type bracket  220  moves downwardly by 1-2 mm along the snap slots  228 , the shaft extension  205  at one end of the roller  202  actuates the microswitch  206  provided below it. When the depressing is released, the Y type bracket  220  is reset by the reset spring  227 .  
         [0092]     Furthermore, if it is desired to produce the effect of a ratchet wheel during the rotation procedure of the roller  202 , there are two schemes: the first one is that one end face of the roller  202  is fabricated in a corrugation shape, a spring having a ratchet wheel form (not shown) is installed on a base  225  near the corrugation end face of the roller  202 , one end of said spring is fixed by the slot and hole on the base  225 , and another end of the spring is bent to form a circle and contacts elastically with the corrugation end face of the roller  202 , when the roller  202  rotates, it brings about a hand felling of a ratchet wheel. And the second one is that a blind hole (not shown in the drawing) is provided on the Y type bracket  220  with a spring and a steel ball installed therein, and fabricating a segment of the surface of the roller shaft which fits with the Y type bracket  220  as teeth form, the steel ball contacts and fits with said teeth under the function of the spring, and when the roller  202  rotates, it can also bring about a hand felling of a ratchet wheel.  
         [0093]     Preferably, a buzzer can be installed on the circuit board  211 , it may incorporate with the information display screen  209 , a prompt information can be issued by them.  
         [0094]     The use of the above roller type cipher code lock assembly will be explained as follows.  
         [0095]     When it is desired to open the lock, the roller  202  is rotated, and the information display screen  209  displays the numbers  0 - 9  in a rolling manner as the rotation of the roller, the rolling order of the numbers (ascending order or descending order) corresponds to the rotation direction of the roller (clockwise or counterclockwise). When one bit of the currently displayed number and the first element of the preset open lock cipher code are the same, the rotation is stopped and the roller  202  is depressed at a time. At this time, the first dot symbol on the information display screen  209  is illuminated, indicating that the first bit of the cipher code is confirmed and inputted. The other bits of the cipher code are inputted in the same manner, during the procedure for confirming each bit of the cipher code, the dot symbols are illuminated in turn on the information display screen  209 .  
         [0096]     After the last bit of the cipher code is inputted, if the inputted cipher code is completely true, then a symbol having a padlock shape will be illuminated, indicating that the lock has been opened.  
         [0097]     If the inputted cipher code is wrong, then prompt information will be issued by the information display screen  209  and the buzzer (if installed), and the program proceeds to an error processing flow.  
         [0098]     If it requires to enable the lock open function of the timing or delay timing, then the timing set state and delay timing set state can be entered by inputting special cipher code, said function can be enabled after inputting the time.  
         [0099]     When it requires to reset the cipher code for opening the lock, firstly, the set cipher code is inputted by the above said steps for inputting the cipher code and confirming, when the inputted set cipher code is decided as true, the symbol having a key shape is illuminated, indicating that it enters the cipher code setting state, at this time, new cipher code for opening the cipher code lock can be inputted.  
         [0100]     When the voltage of the power supply of the cipher code lock is lower than a prescribed value, a symbol having a battery shape is illuminated, prompting that the changing battery is needed.  
         [0101]     The Handle of Cipher Code Lock  
         [0102]     When the above said input device of the roller type electronic cipher code lock is applied to a handle of the door lock, it constitutes a novel handle of the cipher code lock. The external structure of such handle of cipher code lock is shown in  FIG. 11 .  
         [0103]     As shown in the drawing, the handle body  301  is hollow, and the above said input device of the roller type electronic cipher code lock is disposed inside the cavity. The input device of the roller type electronic cipher code lock assumes a form as shown in  FIG. 7 , a roller device  201 , a microcontroller  208 , a information display screen  209  and a microswitch  206  are installed on one circuit board  211 , then the circuit board  211  can be fixed inside the cavity of the handle by screws. A first window  302 , which corresponds to the roller  202  thereby the roller can be dialed and depressed conveniently, is provided on the front surface of the handle. Similarly, a second window  303 , which corresponds to the information display screen  209  thereby the contents displayed by said information display screen  209  can be viewed conveniently and clearly, is further provided on the front surface of said handle.  
         [0104]     In order to show the internal structure of the above said handle of the cipher code lock more clearly,  FIG. 12  and  FIG. 13  show a cross section of the handle of the cipher code lock shown in  FIG. 11 .  
         [0105]     As shown in  FIG. 12 , the handle of the cipher code lock further comprises a rotation shaft  304  fixed within the handle body  301 . It is known from  FIG. 13  that a through hole  305  for allowing the connection wires to pass through is provided inside the rotation shaft  304 . The installed input device of the roller type electronic cipher code lock can be connected to a cipher code identification device and a power supply of the cipher code lock, which are installed inside the core mechanism of the lock or installed at other position inside the door, via the connector  210  and the wires  218 .  
         [0106]     An external structure of another handle of the cipher code lock is shown in  FIG. 14 . It is composed of a handle body  401 , a panel  402  and a transparent window cover  403 . A cross section structure of said handle of the cipher code lock is shown in  FIG. 15 . It is known from the drawing that a hollowed region  405 , which has the size and shape that match with those of the panel  402  thereby the panel  402  being able to be embedded in, is provided on the handle body  401 , the external surface of the panel  402  fits with the curved external surface of the handle body  401  smoothly. Common known snap structure can be used to fix the panel  402  on the handle body  401 . It can also be seen form the drawing, the input device of the roller type electronic cipher code lock assumes the form as shown in  FIG. 8 , that is, it employs two circuit boards, wherein the microcontroller  208  and the information display screen  209  are installed on the circuit board  214 , and the roller device  201  and the microswitch  206  are installed on the circuit board  217 , and these two circuit boards are connected with each other via connectors  215  and  216  and wires  213 . The circuit boards  214  and  217  are installed inside the panel  402 , common known snap structure can be used to fix them, and the structure of using screws and nuts can also be used. A first window, which has the size and position that match the roller  202  thereby a part of the roller  202  is exposed and can be dialed and depressed conveniently by fingers, is provided on panel  402 . Similarly, a second window, which has the size and position that match the information display screen  209  thereby the contents displayed on the information display screen  209  can be viewed clearly, is provided on the panel  402 . A transparent window cover is snapped on the plane on which the second window is located at so that the displayed cipher code and information can be viewed while operating. The handle body  401  further comprises a rotation shaft  404  fixed therein, a through hole, for allowing the connection wire  215  to pass through such that the input device of the roller type electronic cipher code lock may be connected with the cipher code identification device of the cipher code lock and a power supply, which are installed inside the door, is provided in the rotation shaft  404 .  
         [0107]     Yet another handle of the cipher code lock is shown in  FIG. 16 , it is composed of a handle body  501 , a handle base  502  and a panel  504 . It is known by referring to  FIG. 15  in which its internal structure is shown, the input device of the roller type electronic cipher code lock employs the form as shown in  FIG. 8 , it is composed of two circuit boards, wherein the information display screen  209  and the microcontroller  208  are installed on a circuit board  214  which is fixed within the base  502 , and the roller device  201  and the microswitch  206  are installed on a circuit board  217  which is fixed below the panel  502 , and these two circuit boards are connected with each other via connectors  215  and  216  and wires  213 . The base  502  is a housing having a cylindrical shape, a second window  505  used for viewing the contents displayed by the information display screen  209  is provided on its front face. A first window, which has the size and position that match with those of the roller  202  thereby a part of the roller  202  can be exposed so that it may be dialed and depressed by the fingers, is provided on the surface of the panel  504 . The handle body  501  is hollow, and a cavity matching with the shape of said panel  504  is provided on the front surface of the handle body, and said panel is snapped on the internal edge of the cavity. A rotation shaft  506  is provided in the handle body  501 , and through holes  507  and  508  are provided in the rotation shaft  506  to allow the connection wires  218  to pass through the through holes  507  and  508  thereby the input device of the roller type electronic cipher code lock is connected with the cipher code identification device and power supply of the cipher code lock installed inside the door.  
         [0108]     The rotation shaft of the above said three types of the handles of the cipher code lock incorporates with the lock core mechanism or clutch device of the cipher code lock, and the lock core mechanism or clutch device is driven by a electromotive implementation mechanism of the cipher code lock, the electromotive implementation mechanism is controlled by the cipher code identification device of the cipher code lock, the cipher code identification device of the cipher code lock is connected electrically and communicates the data with the input device of the roller type electronic cipher code lock. Before the correct cipher code for opening the lock is inputted, the lock core mechanism or the clutch device are separated from the handle of the cipher code lock (is abbreviated to handle), at this time, the handle can not be rotated, and the lock pin linked therewith is in a protruding state. After a correct cipher code for opening the lock is inputted according to the input method of the electronic cipher code lock of the invention, the electromotive implementation mechanism is operated by the control of the cipher code identification device, and the lock core mechanism or the clutch device is combined with the handle, at this time, the handle is turned downwardly for a angle, (not more than 90 degrees) so that the lock pin is retracted into the lock body, and the lock is opened.  
         [0109]     The Panel of the Cipher Code Lock for the Chests and Bags  
         [0110]     When the above said input device of the roller type electronic cipher code lock is applied to the lock for the chests and bags, it constitutes a novel panel of a cipher code lock for the chests and bags.  FIG. 18  shows an external structure of such panel of a cipher code lock for the chests and bags applied to a chest body, the panel  603  of the cipher code lock for the chests and bags is fixed on the chest body  601 , and the reference number  602  is a chest cover.  
         [0111]     It can be known from  FIG. 19  in which the internal structure is shown that the input device of the roller type electronic cipher code lock employs a form as shown in  FIG. 7 , the roller device  201 , microcontroller  208 , information display screen  209 , and microswitch  206  are installed on the same circuit board  211 , and the circuit board  211  is fixed within the panel  603  by using screws or a snapping structure. The panel  603  has a housing form, a second window  606 , which has a rectangle shape and its shape and size matches with those of the information display screen  209 , is provided on the panel. A transparent cover  607  is provided on said window  606  so that the user may view the displayed cipher code and information. A first window  605 , the position and size of which match the roller  202  thereby a part of the roller  202  is exposed so that the roller may be dialed and depressed by the fingers, is also provided on the panel  603 . The panel  603  can be fixed on the chest body by the rivets  604 , and other fixing method that those skilled in the art are familiar with can also be used. The input device of the roller type electronic cipher code lock is connected with the cipher code identification device and the power supply which are installed within the chest by the wires  218 . The electromotive implementation device and the mechanical lock mechanism of the chest and bag lock operate in a linkage manner, when a correct cipher code for opening the lock is inputted, the implementation device is driven by the control of the cipher code identification device, the lock mechanism is opened, thus the cover  602  of the chest can be opened.  
         [0112]     Although the input device, input method and the application of the electronic cipher code lock of the invention have been described by referring to the above embodiments, however, those skilled in the art shall understand, it is apparent that the form and details thereof can be modified without departing the scope and the spirit of the invention. Therefore, the above described embodiments are only illustrative rather than restrictive, under a condition without departing the spirit and scope of the invention, all the changes and modifications are within the protection scope of the invention.

Technology Classification (CPC): 4