The purpose of this utility model is:
On handwriting pad, add upper roller, fly shuttle on integrated, and add button, be used for finishing various common functions, make the user realize referring to logical computer-controlled one.And only adopt an interface, the USB interface of plug and play.So that bring bigger convenience to the user.
Technical essential of the present utility model as shown in Figure 1, it be by fly shuttle (1), key zone (2),
Hand-written district (3), horizontal roller (4), vertical wheel (5) constitute, and it is characterized in that: add scrambler in original handwriting pad, the external structure corresponding with it is a stepless knob, and this knob also can be pressed use, operation, and this knob is commonly called as and flies shuttle; Also design key zone on the handwriting pad, formed key-press group; Handwriting pad also is equipped with roller, and roller can be vertical wheel and horizontal roller.
The internal hardware circuit of handwriting pad that band flies shuttle by single chip part, roller portion, fly shuttle part, USB interface, button part, former Hanwang PC pen etc. and constitute.
Wherein single chip part as shown in Figure 2: 2 pin of single-chip microcomputer U1 meet power supply VCC, 42 pin ground connection, 6~8 pin of U1 meet the KEY1~KEY3 of key control circuit, 9 of single-chip microcomputer U1,10 pin meet roller LR1 respectively, 3 pin of LR2,12 of U1,13 pin meet 3 of contact pin J1 in the USB interface respectively, 2 pin, 18 pin of U1 connect 1 pin of roller LR1,22 of U1,21 pin connect respectively and fly 1 of shuttle socket JP3,3 pin, 35 of single-chip microcomputer U1,34,33,32,25 pin meet the KX1~KX5 of button part respectively, 31 of U1,26 pin meet roller LR1 respectively, 1 pin of LR2,37 pin of U1 connect 4 pin that fly shuttle socket J3,43 pin of U1 respectively and connecting resistance R1, crystal oscillator CRY, and after capacitor C 1 ground connection, 44 pin of U1 are respectively and the other end of connecting resistance R1 and crystal oscillator CRY, and after capacitor C 2 ground connection, the other parts of single-chip microcomputer U1 are unsettled.
The roller control section is as shown in Figure 3: 1 pin of roller LR1 after resistance R 45 and 2 pin of ground connection and resistance R 46, R47, R48, LR1 meet power supply VCC, VCC connects the positive pole of infrared transmitting tube LT1 after resistance R 41, the minus earth of LT1,3 pin of roller LR1 are after resistance R 46 and the other end of connecting resistance R45 and an end of resistance R 47,1 pin of another termination roller LR2 of R47,2 pin of LR2 meet power supply VCC, VCC connects the positive pole of infrared transmitting tube LT2 after resistance R 42, the minus earth of LT2,3 pin of roller LR2 after resistance R 48 respectively and connect R45 the other end and ground.
The control circuit that flies shuttle part is as shown in Figure 4: fly shuttle socket J3 1 pin and meet KR31 and resistance R 51, and behind R51, meet power supply VCC, 2,5,6, the 7 pin ground connection of J3,3 pin of J3 also meet KR32 and resistance R 52, and meet power supply VCC through resistance R 52,4 pin of J3 respectively and connect K1 and resistance R 53 and meet power supply VCC behind R53.
The control circuit of handwriting pad USB interface is as shown in Figure 5: 1 pin of contact pin J1 meets power supply VCC, and 2,3 pin connect 13,12 pin of single-chip microcomputer U1, the 4 pin ground connection of J1.
The control circuit of button part is as shown in Figure 6: button is arranged with matrix form, and wherein KX1, KX2, KX3, KX4, KX5 are that directions X is the horizontal direction gating, and KY1, KY2, KY3 are the vertical direction gating for the Y direction.KX1 respectively and connect the end of button S11, S12, S13 and an end of resistance R 21, the other end of S11, S12, S13 meets KY1, KY2, KY3 respectively, another termination power VCC of resistance R 21; KX2 respectively and connect the end of button S21, S22, S23 and an end of resistance R 22, the other end of S21, S22, S23 meets KY1, KY2, KY3 respectively, another termination power VCC of resistance R 22; KX3 respectively and connect the end of button S31, S32, S33 and an end of resistance R 23, the other end of S31, S32, S33 meets KY1, KY2, KY3 respectively, another termination power VCC of resistance R 23; KX4 respectively and connect the end of button S41, S42, S43 and an end of resistance R 24, the other end of S41, S42, S43 meets KY1, KY2, KY3 respectively, another termination power VCC of resistance R 24; KX5 respectively and connect the end of button S51, S52, S53 and an end of resistance R 25, the other end of S51, S52, S53 meets KY1, KY2, KY3 respectively, another termination power VCC of resistance R 25.
The control circuit of writing pencil part is as shown in Figure 7: U2 is the writing pencil circuit, and 1 pin of U2 meets power supply VCC, 2 pin ground connection, and 3 pin are input (IN), 4 pin are output (OUT).
The good effect that the utility model and original technology relatively produce:
Original product is only realized handwriting functions, this product on integrated on the basis of handwriting functions roller, fly shuttle and button.The user can utilize about the roller, the move left and right form roll the volume bar, read the form content easily; Utilization flies shuttle and selects information, chooses, and only need press and fly shuttle, and is convenient and swift; 15 buttons have defined function commonly used, also have four for user oneself definition, realize referring to logical to one of computer operation.Interface allows the user arbitrarily to plug,
The real plug and play that realizes.
Embodiment
This product is the surfing handwriting pad, adds upper roller on original Chinese king handwriting pad basis, flies shuttle, more function such as button, and use up-to-date USB interface.
Two rollers are arranged on the surfboard, the vertical and level of corresponding control roll the volume bar.As shown in Figure 1, the roller above the vertical adjusting, the content vertical scrolling in the corresponding control display form; Equally, the roller below the horizontal adjustment, the content level in the corresponding control display form is rolled.
Be added with one on the surfboard and fly shuttle, but the unlimited rotation in the left and right sides can be pressed.Press as determining button, select different options during rotation, it is next nested that concrete function can be made a menu, the various window-functions that need select of self-defined realization.
15 buttons correspondingly respectively surf the Nets, advance, are retreated, receiving and dispatching mail, VCD are opened, play, stop, volume adjusting, selection, application program switching and four free buttons.Easy to operate, only need press corresponding button, will carry out function corresponding.
The core of this product adopts the JB8 of Motorola, and it is a powerful single-chip microcomputer, has a USB interface, 37 I/O mouths (reusable), two counters, two outer interruptions.Wherein: Vreg is that single-chip microcomputer produces 3.3 volts voltage; Vdd is 5 volts of power supplys; PTB0~PTB7, PTC0~PTC7 are 16 general purpose I/O; PTA0~PTA7 can be used as general purpose I/O, also can be used as 8 keyboard interrupt inputs; PTD0~PTD7 can be used as general purpose I/O, also can be used to driving LED; PTE0~PTE4 can be configured to general purpose I/O, also can be configured to other functions, and PTE0 can be used as the external clock input of timer, and PTE1 and PTE2 can be used as the outside input of two counters, and PTE3 and PTE4 can be configured to the USB passage; Vss is ground; / RST is the reset terminal of single-chip microcomputer; OSC1 and OSC2 are two input and output ports of crystal oscillator; / IRQ is the outer inlet that interrupts.
Adopt the crystal oscillator of 6M, be equipped with the electric capacity of two 30p and resistance and the JB8 of a 1M and constitute oscillation circuit.
Roller portion adopts two infrared tubes to finish.The resistance of the effective 1K of infrared emission is connected on the Vcc, sends infrared light; Receiving portion is divided into integrated infrared receiving-member, and three pins are arranged, and middle one meets Vcc, and by the resistance eutral grounding of a 5.1K, two I/O that meet JB8 simultaneously get state respectively on both sides.Utilizing roller to rotate and reverse the waveform difference that produces on two I/O distinguishes the user and is just changeing or reversing.Send corresponding message to computing machine then.
That fly the shuttle employing is scrambler (ENCODER), and it has five pins, on one side three, two on one side.Three pin ground connection, the pin on both sides meets Vcc by 10K resistance, meets two I/O of single-chip microcomputer simultaneously, when flying the shuttle rotation, judges the waveform of two pins, just can judge that just changeing still be in counter-rotating.Yi Bian two pins are a button in addition, and when pressing down, whether two pin conductings just can monitor button with an I/O and press.
15 buttons adopt array to distribute, and finish all buttons with 8 I/O and handle, and this is a ripe already keyboard circuit.
Utilize the detailed instruction set of Motorola, sub-module is realized each function, and time-sharing operation is independent of each other each module.