JP2007185017A - Information processor and information transmitter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information transmitter which can transmit display information for display while supplying the power of a power source efficiently and safely to a display serving as a placard, etc. to be made detachable. <P>SOLUTION: A transmitter-receiver SP, which transmits display information Sdt to a display P to display characters, etc. corresponding to display information Sdt, is equipped with a controller 8 which detects whether or no the display P is in such a state that it can receive the display information Sdt, a feed coil 1 which supplies the display P with the power of a power source by noncontact when it is detected that the display P concerned is in a state of being able to receive the display information Sdt, and a communication controller 9 which transmits the display information Sdt to the display P by infrared rays after start of feed of the power of a power source. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention belongs to a technical field of an information processing device and an information transmission device, and more specifically, supplies power to the information processing device in a non-contact manner by electromagnetic induction and transmits information via radio. It belongs to a technical field of an information transmission apparatus to be performed and an information processing apparatus that receives the supply of power from the information transmission apparatus and provides transmission of the information.

  In recent years, research and development related to various display devices have been actively conducted. As one example, as shown in Patent Document 1 below, the display of rewritten characters and the like without supply of power is maintained. A display device (hereinafter simply referred to as a display) using a so-called microcapsule-type electrophoretic electronic paper material has been developed to a practical stage.

  Here, once the information such as characters is written, the display has the above-mentioned feature that the display of the information can be continued without supply of power, and the feature that the display can be configured simply. Therefore, by constructing the poster itself, etc., with the display itself, it is possible to realize the posted material with a markedly improved visual effect and environmental consideration due to power saving. Is possible.

  On the other hand, in the case where a posting is constituted by the above display, when rewriting the display content, it is necessary to supply power for the rewriting operation to the display as the posting.

  For example, in an exhibition hall or the like, when the above-mentioned display having the same structure is posted in a plurality of places and different displays are performed for each posting place using each display, a common rewriting device is used. It would be convenient if the display contents on each display could be rewritten. In this case, it is necessary to attach / detach each display to / from the rewriting device at the time of the rewriting, and the power (rewriting power from the rewriting device to the display assuming such attachment / detachment). ) Can be considered as a power supply by a conventional method, in which an electrical contact is provided in each of the rewriting device and the display, and the display is connected to the display from the power supply source provided in the rewriting device. A configuration in which power is supplied to the battery is conceivable.

  However, in the case of power supply through such an electrical contact, the electrical contact degree decreases by repeating the attachment and detachment for each display many times (that is, the resistance value at the contact increases), As a result, there is a problem in that power supply may become inefficient. In addition, in the case of electrical contacts, the metal part is exposed to the outside air, so there is a problem that it cannot be used for power supply to a display that is used for a long period of time due to problems such as corrosion or rust. There is also a problem from the point of view of safety.

On the other hand, in the case of the above-mentioned display, when rewriting the display content, it is necessary to transmit display information corresponding to the display content after the rewriting to the display in addition to the supply of the power supply described above. In view of the characteristics when displaying and using such a display, it is desired that the display information itself be transmitted by a method that does not use wired communication.
JP 2001-147451 A

  Therefore, the present invention has been made in view of the above-mentioned problems and the like, and its problem is to efficiently and safely supply power to a display that should be detachable from a rewriting device for rewriting display contents. An information transmitting apparatus capable of transmitting display information for display while supplying power, and an information processing apparatus as a display that receives the supply of power from the information transmitting apparatus and receives the display information It is to provide.

  In order to solve the above-described problem, the invention according to claim 1 is an information transmission device that transmits processing target information to an information processing device that is to process processing target information. It is detected that the state detection means such as a control unit that detects whether or not the target information can be received, and the information processing apparatus is in a state that can receive the processing target information. The power supply means such as a power supply unit that supplies power to the information processing device in a non-contact manner, and the processing target information is transmitted to the information processing device wirelessly after the supply of power is started. Transmission control means such as a control unit.

  Therefore, when it is detected that the information processing apparatus is in a state capable of receiving the processing target information, the power supply power is supplied to the information processing apparatus in a non-contact manner, and after the supply of the power supply power is started. Since the processing target information is transmitted wirelessly, it is possible to transmit the processing target information while preventing unnecessary power supply to the information processing apparatus.

  In order to solve the above-described problem, the invention according to claim 2 is the information transmission device according to claim 1, wherein the information processing device receives the processing target information after the transmission of the processing target information is started. When it is detected that it is no longer possible to perform the processing, it further includes a stopping unit such as a control unit that stops transmission of the processing target information.

  Therefore, when it is detected that the information processing apparatus is no longer capable of receiving the processing target information after the transmission of the processing target information is started, the transmission of the processing target information is stopped. Processing of processing target information in the information processing apparatus can be prevented by preventing useless driving power from being used by the processing target information transmission operation and preventing the processing target information from being recognized as being transmitted in an unprocessable state. It is possible to prevent the continuity from being impaired.

  In order to solve the above-mentioned problem, the invention according to claim 3 is the information transmitting apparatus according to claim 1 or 2, wherein the transmission control means sends the processing target information to the information processing apparatus by infrared rays. Configured to transmit.

  Therefore, since the processing target information is exchanged by infrared rays, the processing target information can be transmitted with a simple configuration and low power consumption.

  In order to solve the above-described problem, the invention according to claim 4 is the information transmission apparatus according to any one of claims 1 to 3, wherein the information processing apparatus receives the processing target information. When it is detected that the information processing apparatus is in a possible state, the information processing apparatus further includes an identification unit such as a control unit that identifies whether the information processing apparatus is to receive the processing target information, and the transmission control unit When the information processing apparatus is identified as the information processing apparatus that should receive the processing target information after the supply of power is started, the transmission of the processing target information to the information processing apparatus is started. Composed.

  Therefore, after transmission of power supply power to the information processing device, transmission of the processing target information to the information processing device is started after the information processing device is identified. Therefore, the processing target information is erroneously transmitted to another information processing device. Can be prevented.

  In order to solve the above problem, the invention according to claim 5 is the information transmission apparatus according to claim 4, wherein the information processing apparatus performs the processing after the power supply power supply starts. When it is not identified that the information processing apparatus is to receive the target information, the supply of the power supply is stopped.

  Therefore, when the information processing apparatus is not identified as the information processing apparatus that should receive the processing target information after starting the supply of the power supply, the supply of the power supply is stopped, so that the wasteful power supply operation in the information transmission apparatus Can be prevented.

  In order to solve the above-described problem, the invention according to claim 6 is the information transmitting apparatus according to any one of claims 1 to 5, wherein the power feeding unit is connected to a power receiving unit in the information processing apparatus. A power supply coil for supplying the power supply power by non-contact electromagnetic induction, and an application means such as a transistor for applying the power supply power to the power supply coil, the state detection means, Kickback voltage detection means such as a capacitor for detecting the kickback voltage generated in the power supply coil, and whether the kickback voltage is generated again after the supply of power is stopped by the power supply stop means Checking means such as a comparator, and the power supply means is connected to the power supply coil by the application means based on the detected kickback voltage. When the power supply stop unit such as a power supply stop unit that stops the supply of the power supply and the confirmation unit confirms that the kickback voltage is not generated again, the application unit applies the power to the power supply coil. Restarting means such as an integrated circuit for restarting supply of power.

  Therefore, when it is detected that the kickback voltage is generated in the power supply coil, the power supply to the power supply coil by the applying unit is stopped, so even if a high voltage kickback voltage is generated, information is transmitted from the kickback voltage. The device can be effectively protected.

  In addition, since it is confirmed whether or not the kickback voltage is generated again and it is confirmed that the kickback voltage is not generated, the power supply is automatically restarted. Therefore, the power supply for the information processing apparatus is more convenient and effective. The power supply can be resumed.

  In order to solve the above-mentioned problem, the invention according to claim 7 is the information transmission device according to claim 6, wherein the kickback voltage detecting means is connected between the feeding coil and the applying means. ing.

  Therefore, since the kickback voltage detecting means is connected between the applying means and the feeding coil, the detecting means is connected to the final output stage as the information transmitting apparatus, so that the information transmitting apparatus including the applying means is included. The whole can be effectively protected from the kickback voltage.

  In addition, since the detection unit is connected to the final output stage as the information transmission device, it is possible to reliably detect the kickback voltage and control the activation of the power supply to the information processing device.

  In order to solve the above-described problem, the invention according to claim 8 is the information transmission device according to claim 6 or 7, wherein the kickback voltage detecting means is a capacitor or the like charged by the kickback voltage. Charging means; and comparison means such as a comparator for detecting whether or not the voltage of the charged means that has risen due to the charging exceeds a preset threshold voltage; When the voltage of the charging unit exceeds the threshold voltage, the supply unit is configured to stop supplying the power supply power to the feeding coil.

  Therefore, since the detecting means is constituted by the charged means and the comparing means, the information transmitting apparatus can be protected more safely by instantaneously detecting the occurrence of the kickback voltage and stopping the power supply to the power supply coil. In addition, it is possible to control the killing of power supply to the information processing apparatus more reliably and simply.

  In order to solve the above-mentioned problem, the invention according to claim 9 is the information transmission device according to any one of claims 6 to 8, wherein the power reception unit includes a thin power reception coil, and the power supply coil Is disposed at a position facing the power receiving coil when the information processing apparatus is disposed at a position where the information to be processed can be received.

  Therefore, even when power supply is supplied to the information processing apparatus by non-contact electromagnetic induction, the supply can be performed while effectively protecting the information processing apparatus.

  In order to solve the above-mentioned problem, the invention according to claim 10 is the information transmitting apparatus according to any one of claims 6 to 9, wherein the confirmation unit is configured to stop the supply of the power supply power. , It is configured to check whether or not the kickback voltage is generated again after a preset time has elapsed.

  Therefore, since the reoccurrence of the kickback voltage is confirmed after elapse of a preset time, the supply of power can be effectively restarted.

  In order to solve the above problem, according to an eleventh aspect of the present invention, in the information transmitting apparatus according to the tenth aspect, the confirmation unit is configured to perform the preset time after the supply of the power supply is stopped. It is configured to check whether or not the kickback voltage is generated again each time.

  Therefore, since the re-occurrence of the kickback voltage is confirmed every time a preset time elapses, the supply of the power supply can be restarted immediately after the kickback voltage is no longer generated. Can do.

  In order to solve the above-described problem, the invention according to claim 12 is the information transmitting apparatus according to claim 10 or 11, wherein the preset time is 6 seconds.

  Therefore, since the preset time is 6 seconds, the supply of power to the information processing apparatus can be resumed without causing the user to feel inconvenience.

  In order to solve the above-mentioned problem, an invention according to claim 13 is the information processing apparatus that receives transmission of the processing target information by the information transmitting apparatus according to any one of claims 1 to 12. A power receiving unit that receives the supply of power from the power supply unit in a non-contact manner, a receiving unit such as a communication terminal that receives the processing target information transmitted from the information transmitting unit, and the received processing target information. Processing means such as a control unit for processing.

  Therefore, when it is detected that the information processing apparatus is in a state capable of receiving the processing target information, power supply is supplied from the information transmission apparatus in a contactless manner, and after the supply of the power supply is started. Since the processing target information is received wirelessly, it is possible to receive the processing target information while preventing unnecessary supply of power.

  In order to solve the above-described problem, the invention according to claim 13 is the information processing apparatus according to claim 12, wherein the processing means is provided on a display means such as a display so that the received processing target information can be visually recognized. It is comprised so that it may be display control means, such as a control part displayed.

  Therefore, since the display information as the processing target information is displayed on the display device as the information processing device, it is possible to prevent an effective and wasteful supply of power to the display device that moves relative to the information transmission device. Then, the display information can be transmitted and the display information can be displayed.

  According to the first aspect of the present invention, when it is detected that the information processing apparatus is in a state capable of receiving the processing target information, power is supplied to the information processing apparatus in a non-contact manner. At the same time, since the processing target information is transmitted wirelessly after the supply of the power is started, the processing target information can be transmitted while preventing unnecessary power supply to the information processing apparatus.

  Therefore, it is possible to transmit the processing target information to the information processing apparatus while efficiently and safely supplying power.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, after the transmission of the processing target information is started, the information processing apparatus can receive the processing target information. When it is detected that the processing target information has been lost, the transmission of the processing target information is stopped, so that it is possible to prevent wasteful use of drive power due to a wasteful processing target information transmission operation, and the processing target information cannot be processed. It is possible to prevent the continuity of processing of processing target information in the information processing apparatus from being recognized as being transmitted in the state.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, since the processing object information is exchanged by infrared rays, the processing object information is transmitted with low power consumption with a simple configuration. can do.

  According to the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, after transmission of power supply power to the information processing apparatus, processing is performed after identification of the information processing apparatus. Since the transmission of the target information to the information processing apparatus is started, it is possible to prevent the processing target information from being erroneously transmitted to another information processing apparatus.

  According to the fifth aspect of the invention, in addition to the effect of the fourth aspect of the invention, the information processing apparatus is not identified as the information processing apparatus that should receive the processing target information after the supply of power is started. Since the supply of power supply is stopped, it is possible to prevent useless power supply operation of the information transmitting apparatus.

  According to the invention described in claim 6, in addition to the effect of the invention described in any one of claims 1 to 5, when it is detected that a kickback voltage is generated in the power feeding coil, the application means Since the power supply to the power supply coil is stopped, even if a high voltage kickback voltage is generated, the information transmission apparatus can be effectively protected from the kickback voltage.

  In addition, since it is confirmed whether or not the kickback voltage is generated again and it is confirmed that the kickback voltage is not generated, the power supply is automatically restarted. Therefore, the power supply for the information processing apparatus is more convenient and effective. The power supply can be resumed.

  Therefore, it is possible to realize the supply of power to the information processing apparatus by the long-life non-contact power transmission system while ensuring the protection and convenience of use of the information transmission apparatus.

  According to the seventh aspect of the invention, in addition to the effect of the sixth aspect of the invention, the kickback voltage detecting means is connected between the applying means and the power supply coil. Since the detection means is connected to the final output stage, the entire information transmission apparatus including the application means can be effectively protected from the kickback voltage.

  In addition, since the detection unit is connected to the final output stage as the information transmission device, it is possible to reliably detect the kickback voltage and control the activation of the power supply to the information processing device.

  According to the invention described in claim 8, in addition to the effect of the invention described in claim 6 or 7, since the detecting means is constituted by the charged means and the comparing means, the generation of the kickback voltage is instantaneously performed. The information transmission device can be protected more safely and the power supply power supply to the information processing device can be controlled more reliably and easily by stopping the power supply to the power supply coil.

  According to the ninth aspect of the invention, in addition to the effect of the invention according to any one of the sixth to eighth aspects, even when the power supply is supplied to the information processing device by non-contact electromagnetic induction action. Thus, the supply can be performed while effectively protecting the information processing apparatus.

  According to the invention described in claim 10, in addition to the effect of the invention described in any one of claims 6 to 9, since the reoccurrence of the kickback voltage is confirmed after elapse of a preset time, the effect Thus, the supply of power can be resumed.

  According to the eleventh aspect of the present invention, in addition to the effect of the tenth aspect of the present invention, it is repeatedly checked that the kickback voltage is regenerated every time a preset time elapses. After the voltage is no longer generated, it can be confirmed quickly and the supply of power can be resumed.

  According to the invention described in claim 12, in addition to the effect of the invention described in claim 10 or 11, since the preset time is 6 seconds, information can be provided without causing the user to feel inconvenience. The supply of power to the processing apparatus can be resumed.

  According to the invention of claim 13, when it is detected that the information processing apparatus is in a state capable of receiving the processing target information, the power supply is supplied from the information transmission apparatus in a non-contact manner. Since the processing target information is received wirelessly after the supply of the power supply is started, the processing target information can be received while preventing unnecessary power supply.

  Therefore, it is possible to receive the processing target information from the information transmission apparatus while receiving the power supply efficiently and safely.

  According to the invention described in claim 14, in addition to the effect of the invention described in claim 13, display information as processing target information is displayed on a display device as an information processing device. On the other hand, it is possible to prevent the supply of effective and useless power supply to the display device that moves, and to transmit the display information and display the display information.

  Next, the best mode for carrying out the present invention will be described with reference to FIGS. Note that the embodiment described below supplies power for driving power when rewriting display contents to a wall-mounted display such as a so-called welcome board, and displays display information such as characters for rewriting. This is an embodiment in the case where the present invention is applied to an information transmitting / receiving device that transmits to the display.

  1 is an external perspective view (outside perspective view seen from the display surface side) showing an outline of the power information transmission system including the information transmitting / receiving apparatus according to the embodiment, and FIG. 2 shows the configuration of the power information transmission system. FIG. 3 to FIG. 6 are diagrams specifically showing the configuration and operation of the power information transmission system, and FIG. 7 is a flowchart showing the operation of the power information transmission system as a whole.

  As illustrated in FIG. 1, the power information transmission system S according to the embodiment includes a display 40 as a display unit configured by the electronic paper material described above, a drive unit 30 that drives the display 40, and a power reception unit. Display device as an information processing apparatus including the power receiving unit 20, the power receiving coil 10, the communication terminal 50 as a receiving unit, the communication control unit 51, and the control unit 52 as a processing unit and a display control unit. P and information transmission / reception for supplying display power to be supplied to the display device P and display information to be rewritten by the display device P being mounted when the display content is rewritten. The device SP, a control terminal PC composed of a personal computer, an input unit IN composed of a keyboard and a mouse, a liquid crystal display, etc. It is constituted by a display unit D,.

  The information transmitting / receiving apparatus SP includes a power supply coil 1, a power supply unit 2 as a power supply unit, a communication terminal 4, a communication control unit 9, a state detection unit, a transmission control unit, a stop unit, and a control unit as an identification unit. When the power supply power and the display information are transmitted to the display device P, the power feeding coil 1 and the power receiving coil 10, and the communication terminal 3 and the communication terminal 50 are respectively provided. The display device P is placed so as to face each other in parallel and close to a distance of about 2 millimeters, for example.

  In the above configuration, the feeding coil 1 and the communication terminal 4 are arranged in a plane on the surface of the mounting surface W in the information transmitting / receiving apparatus SP, and the receiving coil 10 and the communication terminal 50 are also Similarly, it is arranged on the back surface of the display device P in a plane. Furthermore, the mounting position on the information transmitting / receiving device SP of the display device P in which the power feeding coil 1 and the power receiving coil 10 and the communication terminal 3 and the communication terminal 50 face each other in parallel and close to each other is simply referred to as “regularity”. Referred to as “position of”.

  Next, a specific configuration will be described with reference to FIG.

  As shown in FIG. 2, a male plug 100 to be inserted into a female plug (wall outlet) (not shown) to which, for example, power of AC 100 volts is supplied to the power feeding unit 2 in the information transmitting / receiving apparatus SP according to the embodiment. Is connected to the power supply unit B.

In this arrangement, when the female alternating from the plug current S ₁₀₀ relative to the male plug 100 is supplied actually to the power supply unit B configured as a so-called AC adapter or the like, the alternating current S ₁₀₀ eg DC The power is converted to a power supply current of 12 volts and is output to the power feeding unit 2 as a power supply signal Sb.

  As a result, the power feeding unit 2 converts the power signal Sb into a pulse-shaped power feeding signal Ss having a preset frequency (for example, 270 kilohertz) based on the control signal Scbb from the control unit 8, and the power feeding signal Ss The power is supplied to the feeding coil 1. The preset frequency can be changed according to the specifications of the feeding coil 1 and the receiving coil 10.

  On the other hand, the communication terminal 3 transmits display information Sdt displayed on the display 40 in the display device P to the communication terminal 50 in the display device P using infrared IR, and the communication control unit 9 displays the display information Sdt. The display information Sdt to be transmitted to the device P is generated in a state encoded based on the control signal Scrt from the control unit 8 and output to the communication terminal 3. Thereby, the communication terminal 3 transmits the display information Sdt to the communication terminal 50 via the infrared IR.

  On the other hand, an external control terminal PC is connected to the control unit 8 in the information transmitting / receiving apparatus SP. Based on the control signal Scp from the control terminal PC, the control signals Scbb and Scrt are generated and output to the power feeding unit 2 or the communication control unit 9, respectively.

  For this reason, the control terminal PC generates the control signal Scp for controlling the control unit 8 based on the operation signal Sop output from the input unit IN based on the control of the user in the input unit IN. Output to the control unit 8. The operating states of the control terminal PC and the entire power information transmission system S are displayed on the display unit D by a display signal Sdp from the control terminal PC.

  On the other hand, the display device P according to the embodiment includes the power reception coil 10, the power reception unit 20, the drive unit 30, the display 40, the communication terminal 50, the communication control unit 51, and the control unit 52.

  In this configuration, the power receiving coil 10 is in a position facing the power feeding coil 1 in the vicinity of and in parallel with the power receiving coil 10 in a state in which the display device P is placed at the regular position, thereby electromagnetic induction between the power receiving coil 10 and the power receiving coil 10. A circuit is constructed. In this state, when the power supply signal Ss is supplied to the power supply coil 1, an induced electromotive force corresponding to the magnitude is generated in the power reception coil 10, so that the power reception coil 10 supplies the power reception unit 20. A power reception signal Sps is output.

  Next, the power reception unit 20 to which the power reception signal Sps is input processes the current and voltage in the power reception signal Sps based on the control signal Scb from the control unit 52 and outputs the processed current and voltage to the drive unit 30 as the drive signal Srb. .

  On the other hand, the communication terminal 50 receives the display information Sdt transmitted from the communication terminal 3 in the information transmitting / receiving apparatus SP via the infrared IR, and outputs the display information Sdt to the communication control unit 51.

  Thereby, the communication control unit 51 performs a preset decoding process on the display information Sdt and outputs the decoded display information Scrr to the control unit 52.

  Then, the control unit 52 generates the control signal Scb for controlling the operation of the power receiving unit 20 and outputs the control signal Scb to the power receiving unit 20 and, on the display 40, specifically on the display 40. A display drive signal Sdd corresponding to the information to be displayed is generated and output to the drive unit 30.

  Thus, the drive unit 30 generates a display drive signal Sd for driving the display 40 based on the drive signal Srb and the display drive signal Sdd, and outputs the display drive signal Sd to the display 40 for display as a wall-hanging display. This is performed on the display 40.

  Next, a specific circuit configuration and function of the information transmitting / receiving apparatus SP according to the embodiment will be described with reference to FIGS. 3 to 5. 3 is a circuit diagram illustrating the configuration of the information transmitting / receiving apparatus SP according to the embodiment, FIG. 4 is a timing chart for explaining the kickback voltage according to the embodiment, and FIG. 5 is the information transmitting / receiving apparatus. It is a timing chart which shows the operation | movement of automatic return of the electric power feeding in SP.

  As shown in FIG. 3, the information transmitting / receiving device SP to which the power supply signal Sb from the power supply unit B is supplied as the power supply Vcc includes capacitors C16 and C17, resistors R1 to R3, R17, R18, R24 and R25, an integrated circuit. The power supply stop unit 7 serving as a power supply stop unit is formed by connecting the IC1 and transistors Q1, Q5, and Q6, which are active elements for switching, as shown in FIG. 3, a diode D4 including a Schottky diode, and a resistor R15. R22, capacitor C13 and capacitor C14 are connected as shown in FIG. 3, integrated circuit IC3, capacitors C1, C3, C6, C7 and C15 and resistors R8, R12, R16, R19 and R20. Are connected as shown in FIG. 3 and a comparator 6 as a detecting means and a comparing means. It is configured to include a. As constituent members other than the power supply stop unit 7, the smoothing circuit 5, and the comparator 6, diodes D2 and D3 and resistors R4 to R7, R10, R13, R14, R21 to R23, as shown in FIG. R26 to R28, capacitors C2, C4, C5, C8, C9, C11, C12, C18, C19 and C21, ceramic capacitors C10 and C20, transistors Q2 and Q3, transistor Q4 as an application means, and integration A circuit IC2, an integrated circuit IC4 as confirmation means, and an integrated circuit IC5 as restart means are included.

  Next, the operation will be described.

  In the circuit configuration shown in FIG. 3, the transistor Q4 connected to the final output stage as the power feeding unit 2 is directly connected to the power feeding coil 1, and the drain terminal (output terminal) of the transistor Q4 has One end of a capacitor C12 as a kickback voltage detecting means having a small capacity (for example, about 39 to 100 picofarads) and a charged means is connected via a resonance capacitor C11, and the other end of the capacitor C12 is connected to the other end. It is connected to the smoothing circuit 5 from a connection point between the resistor R13 and the resistor R14 via the resistors R13 and R14 for voltage division.

  Now, although the power supply from the power supply unit B to the information transmitting / receiving device SP (power supply by the output of the power supply signal Sb) has started, the display device P is not yet placed at the regular position. Thus, when a so-called kickback voltage (kickback voltage due to the absence of the power receiving coil 10 at the opposite position) is generated in the power feeding coil 1, it is directly applied to the transistor Q4. Therefore, the information transmitting / receiving apparatus SP according to the embodiment detects whether or not the display device P is placed at a proper position with or without the kickback voltage.

  Here, the kickback voltage will be specifically described with reference to FIG.

  When the power supply signal Ss (the voltage value is Vd) shown in FIG. 4A is supplied to the power supply coil 1 by supplying the continuous power supply signal Ss shown in FIG. Is charged by the previous pulse current, so that the power supply coil 1 already has a certain voltage when the next pulse current is applied. In this case, if the power receiving coil 10 is in a normal power supply state in which the power receiving coil 10 is disposed at the regular position (that is, the position facing the power supply coil 1), a certain voltage is already applied even when the pulsed current is applied. Even if the power supply coil 1 has, since a part of the voltage is consumed for charging the power receiving coil 10, the kickback voltage Vk generated in the power supply coil 1 is not so high ( (Refer FIG.4 (b)).

  However, at this time, when the display device P including the power receiving coil 10 is not placed at the regular position and as a result, there is no power receiving coil 10 facing the power feeding coil 1, the kickback due to the immediately preceding pulsed current is performed. Since there is no receiving coil 10 that consumes the voltage Vk, the feeding coil 1 itself becomes a high voltage, and as a result, the high voltage is directly used as a kickback voltage at the timing when the next pulsed current is passed through the feeding coil 1. It is directly applied to the transistor Q4 that supplies current to the feeding coil 1 (see FIG. 4C).

  At this time, specifically, the value of the kickback voltage in the case illustrated in FIG. 4C may reach several hundreds of volts when the power supply voltage as the transistor Q4 is 15 volts, and as a result This also causes high voltage breakdown of the transistor Q4 itself.

  Therefore, in the information transmitting / receiving apparatus SP according to the embodiment, a small-capacitance capacitor C12 is provided between the transistor Q4 and the power feeding coil 1. Thus, when the kickback voltage is generated in the power feeding coil 1, the capacitor C12 is charged by the kickback voltage.

  When the capacitor C12 is charged, the terminal voltage at both ends of the capacitor C12 increases, and the increased terminal voltage is input to the comparator 6 through the voltage dividing resistors R13 and R14 and the smoothing circuit 5. As a result, the comparator 6 compares the terminal voltage of the capacitor C12 input after the voltage division with the threshold voltage set in advance by the resistance values of the resistors R19 and R20.

  Accordingly, when the comparator 6 detects that the terminal voltage of the capacitor C12 exceeds the threshold voltage, that is, as a proof that the display device P is not placed at the normal position. This is immediately transmitted from the integrated circuit IC3 to the power supply stop unit 7 via the resistor R2, whereby the transistor Q1 is turned off in the power supply stop unit 7 and the power supply from the power supply unit B is continued. However, the supply of power to the power feeding unit 2 is stopped.

  Here, since the kickback voltage detection operation described above and the power supply stop operation by the power supply stop unit 7 are executed in an instant, a high kickback voltage is consequently generated in the power supply coil 1. Even if it is generated and applied in reverse, the power supply stop operation by the power supply stop unit 7 is instantaneously performed, so that each component in the power supply unit 2 including the transistor Q4 can be protected. At the same time, it is possible to reliably detect whether or not the display device P is placed at the proper position.

  The reason why the capacitance of the capacitor C12 is small as described above is that the capacitor C12 can quickly and surely detect the kickback voltage as a condition that the capacitor C12 should have. This is because it is necessary to provide two points: that the presence of the capacitor C12 does not affect the waveform of the power supply signal Ss. At this time, if these two conditions are satisfied, the capacitance of the capacitor C12 can be further reduced. However, if it is too small, it becomes necessary to consider the stray capacitance of the circuit. The capacitor C12 has a capacity of 39 to 100 picofarads as described above.

  Next, FIG. 5 shows the operation up to the restart of the power supply in the state where the supply of the power supply to the power supply unit 2 is stopped (that is, the start of the power supply when the display device P is placed at the normal position). It explains using. The restart operation is realized mainly by the timer function in the integrated circuit IC4 as the confirmation unit and the integrated circuit IC5 as the restart unit.

That is, as shown in the uppermost part of FIG. 5, the power receiving coil 10 exists at a position facing the power feeding coil 0 because the display device P is removed or the new display device P is not yet placed at the normal position. If would not (see FIG. 5 timing t _1), as shown in the second stage and the third stage from the top 5, the kick back voltage is detected by the comparator 6 for generating the feed signal Ss due to this ( Further, as shown in the fourth row from the top in FIG. 5, the supply of power to the power feeding unit 2 is immediately stopped by the operation of the power supply stopping unit 7 described above (see S2 in FIG. 5). . Then, as shown in the third row from the bottom in FIG. 5, timing in the integrated circuit IC4 is started (see S3 in FIG. 5). Here, in the integrated circuit IC 4, the timing is decided to stop the time T ₁ after the counting starts the clock in it.

Incidentally, the time T ₁ is once when the display device P which has been removed from the position of the normal is re-placed in the position of the normal or still the regular new display not placed in a position device P Is placed at the regular position, the time allowed for the power supply to the display device P to be resumed and the display on the display 40 to be resumed (in other words, the display device P is placed again). The time when the person who newly placed or newly placed can wait for the display to resume without worrying about a failure or the like is set in advance, and a specific value is, for example, 6 seconds. Can be set freely.

Next, as shown in the second stage from the bottom 5, the time count in the integrated circuit IC4 is stopped at timing t _2, the at timing t ₂ is now clocked at the integrated circuit IC5 is started (Fig. 5 reference numeral S4 reference ). Here, the integrated circuit IC5 is the timing is decided to stop the time T ₂ after the counting starts the clock in it. Note that the time T ₂ are, at least, what is previously set as a time longer than the time that is considered necessary to the supply of the power supply power to the feeding portion 2 from the detection of the kickback voltage is stopped completely The specific value is, for example, 0.1 seconds.

  Then, simultaneously with the start of timing in the integrated circuit IC5, the power supply stop operation by the power supply stop unit 7 for the power supply unit 2 is canceled (see S5 in FIG. 5), whereby the power supply signal to the power supply coil 1 is released. The supply of Ss is restarted (see S6 in FIG. 5).

Thereafter, at the timing t ₃ when the supply is resumed in the feed signal Ss, if still when the display device P is in a state which is not kept or newly mounted is removed, this occurs kickback voltage above again Since it is detected by the comparator 6, the supply stop operation of the power supply by the power supply stop unit 7 to the power supply unit 2 shown as reference numerals S1 and S2 in FIG. 5 is executed again (refer to reference numerals S7 and S8 in FIG. 5). Thereafter, the same supply resumption operation as indicated by reference numerals S3 to S6 in FIG. 5 is repeated as indicated by reference numerals S9 to S12 in FIG.

  Then, the above-described operation of stopping the supply of power to the power supply unit 2 → waiting for 6 seconds → resuming supply → stopping supply → waiting for 6 seconds →... Causes the display device P to be placed again at the normal position. Alternatively, the process is repeated until another display device P is newly placed at the proper position and no kickback voltage is generated (that is, until the supply stop operation by the power supply stop unit 7 is not executed). Thereby, until the display device P is remounted or newly mounted, the power supply to the power supply unit 2 can be stopped to reliably prevent the occurrence of the kickback voltage, and the display device P is correctly mounted again. After being newly placed or newly placed, power supply to the power feeding unit 2 is immediately resumed, and power feeding to the display device P is resumed.

  Next, a detailed configuration of the power feeding unit 20 that receives power feeding by electromagnetic induction from the information transmitting / receiving apparatus SP according to the above-described embodiment will be specifically described with reference to a circuit diagram illustrated in FIG.

  As shown in FIG. 6, the power receiving unit 20 connected to the power receiving coil 10 includes a bridge circuit BG in which diodes D11 to D14 are bridge-connected, ceramic capacitors C30 to C31, a capacitor C32, and resistors R30 to R34. The three-terminal regulator RG and the display diode D10 are output from the output terminal (shown as “Vout” in FIG. 5) of the power receiving unit 20 as the drive signal Srb.

  As a method for detecting that the display device P has moved away from the regular position or has not yet been placed, the presence or absence of the display device P is optically detected in addition to the circuit described above. It is also possible to do.

  However, in the case of the optical detection, something other than the original display device P (for example, a human hand or a bag unrelated to the display device P) is located at the front position of the optical sensor for optical detection. If it is placed, it is optically detected as if the display device P is placed. In this case, when the supply of power to the power supply unit 2 is started, it is originally placed. Even when the display device P that should be present is not placed (that is, there is no power receiving coil 10 to be opposed to the power feeding coil 1), power supply power is supplied to the power feeding unit 2. . This means that the kickback voltage is generated.

  Therefore, in the information transmission / reception device SP of the embodiment, the presence of the display device P itself is detected by the operations of the capacitor C12, the comparator 6 and the power supply stop unit 7 without detecting the optical display device P described above. In addition to the reliable detection, the supply of power to the power supply unit 2 is forcibly stopped immediately when the kickback voltage is generated.

  Next, the display operation according to the embodiment, which is executed in the power information transmission system S having the above-described configuration, will be described together using the flowchart shown in FIG. Note that the display operation described below is mainly performed in cooperation with the control unit 8 in the information transmitting / receiving device SP and the control unit 52 in the display device P.

  As a display operation according to the embodiment executed in the power information transmission system S, first, when power supply power is supplied to the information transmission / reception apparatus SP via the power supply unit B, the information transmission / reception apparatus SP displays the display power. The presence confirmation operation of the device P (that is, a confirmation operation as to whether or not the display device P is placed at the regular position as the display device P) is started (steps S1 and S2). At this time, in the processing of steps S1 and S2, the confirmation operation (see reference numerals S5 to S12 in FIG. 5) for repeating the kickback voltage shown in FIG. 5 is repeated (step S1; NO). Thus, it is indirectly confirmed whether or not the display device P is placed at the regular position.

  If it is confirmed in step S1 that the display device P has been placed at the proper position (step S1; YES), then the power supply unit 2 and the power supply in the information transmitting / receiving device SP described above are used. Supply of power from the information transmitting / receiving device SP to the display device P is started by cooperation between the coil 1 and the power receiving coil 10 and the power receiving unit 20 in the display device P (step S3). After the state becomes operable, identification processing is performed to determine whether or not the display device P is a dedicated display device P for the information transmitting / receiving device SP (steps S4 and S5; NO).

  Here, as the identification process, specifically, an identification message preset from the communication control unit 9 of the information transmitting / receiving apparatus SP via the communication terminal 3 (more specifically, for example, “01111110b (“ b ”is two The following identification message is transmitted to the communication terminal 50 of the display device P. When the display device P is a display device P dedicated to the information transmitting / receiving device SP, a response message (specifically, for example, the same as the identification message) set in advance for the identification message. This time, a reply message having contents is returned from the communication terminal 50 to the information transmitting / receiving device SP via the communication terminal 3. Thereby, the identification processing is executed by recognizing the content of the response message in the information transmitting / receiving apparatus SP.

  If the display device P is not recognized as a dedicated display device P for the information transmitting / receiving device SP by the identification processing (step S5; NO), the subsequent specific display processing is not executed. The power supply operation for the display device P is stopped (step S11), the display unit D displays that the display device P is not dedicated to the information transmitting / receiving device SP (step S12), and the display operation according to the embodiment is terminated.

  On the other hand, when it is determined in step S5 that the display device P is a dedicated display device P for the information transmitting / receiving device SP (step S5; YES), the display information is transmitted via the communication terminals 3 and 50. Transmission of Sdt is started (step S6), and information corresponding to the display information Sdt is displayed on the display 40 in the display device P.

  Next, during the transmission of the display information Sdt, it is monitored whether or not the display information Sdt can be transmitted due to the reason that the display device P is removed from the normal position (step S7). ). Here, whether or not the transmission of the display information Sdt has become impossible is, for example, that the identification message is periodically transmitted during the transmission and reception of the display information Sdt, and the response message is displayed in response to the identification message. If the response is received from P, it is determined that the display information Sdt can still be transmitted. On the other hand, if the response message is not returned, it is determined that the display information Sdt cannot be transmitted.

  If the display information Sdt can still be transmitted (step S7; NO), it is confirmed whether or not the transmission of all the display information Sdt has been completed (step S13), and the display information Sdt to be transmitted is still When it remains (step S13; NO), it returns to the operation of step S6 again to continue the transmission.

  On the other hand, if it is determined in step S13 that transmission of all display information Sdt has been completed (step S13; YES), an end message indicating that transmission of the display information Sdt is terminated (specifically, for example, the above-described example) An end message having the same content as the identification message (“01111110b”) is transmitted to the display device P, and the display device P recognizes the end of transmission of the display information Sdt (step S14), and then information for the display device P is displayed. The supply of power from the transmission / reception device SP is terminated (step S15), and that effect is displayed on the display unit D (step S16). After that, while the display device P is engaged in the display content rewritten autonomously, the information transmitting / receiving device SP returns to the operation of step S1 and enters a standby state.

  On the other hand, when it is determined in step S7 that transmission of the display information Sdt is impossible (step S7; YES), the transmission of the identification message is performed only for a preset period (for example, several seconds). It repeats from the transmission / reception device SP (step S8), and confirms whether or not the state in which the display information Sdt cannot be transmitted continues during the repetition (step S9). When the display information Sdt can be transmitted during the repetition due to, for example, the display device P being repositioned at a proper position (step S9: NO), the operation of step S13 is performed. The operation of steps S13 to S16 or S6 described above is executed.

  On the other hand, when it is still impossible to transmit the display information Sdt in the determination in step S9 (step S9; YES), for example, the display device P has been removed from the normal position. Since transmission of the display information Sdt to P becomes impossible, transmission of the display information Sdt is stopped halfway (step S10), and supply of power from the information transmitting / receiving apparatus SP to the display apparatus P is also stopped.

  Thereafter, an error display indicating that the transmission of the display information Sdt to the display device P has been completed incompletely is performed on the display unit D (step S12), and the display operation according to the embodiment is terminated. After the operation of step S13, the supply of power to the information transmitting / receiving apparatus SP itself may be stopped as shown in FIG. 7, or the operation returns to the operation of step S1 as shown by the broken line in FIG. The information transmitting / receiving apparatus SP may shift to a standby state.

  As described above, according to the operation of the information transmitting / receiving apparatus SP according to the embodiment, when it is detected that the display apparatus P is in a state in which the display information Sdt can be received, Thus, the display information Sdt is transmitted wirelessly after the supply of power is supplied in a non-contact manner, and thus the display information Sdt is transmitted while preventing unnecessary power supply from being supplied to the display device P. be able to.

  Therefore, the same or different display information Sdt can be transmitted to one or a plurality of display devices P while efficiently and safely supplying power.

  Further, when it is detected that the display device P is no longer in a state where it can receive the display information Sdt after the transmission of the display information Sdt is started, the transmission of the display information Sdt is stopped. The display information Sdt can be prevented from being used unnecessarily by the transmission operation of the display information Sdt, and the display information Sdt is prevented from being recognized as being transmitted when the display information Sdt cannot be processed. It is possible to prevent the continuity from being impaired.

  Furthermore, since the display information Sdt is exchanged by the infrared IR, the display information Sdt can be transmitted with a simple configuration and low power consumption.

  Furthermore, after supplying the power supply to the display device P, transmission of the display information Sdt to the display device P is started after the display device P is further identified, so that the display information Sdt is erroneously transmitted to another display device P. Can be prevented.

  Further, when the display device P is not identified as the display device P that should receive the display information Sdt after the supply of the power supply is started, the supply of the power supply is stopped. The operation can be prevented.

  Further, when it is detected that the kickback voltage is generated in the power supply coil 1, the power supply to the power supply coil 1 by the power supply unit 2 is stopped, so even if a high voltage kickback voltage is generated, The information transmitting / receiving apparatus SP can be effectively protected.

  In addition, it is confirmed whether or not the kickback voltage is generated again, and when it is confirmed that the occurrence does not occur, the power supply is automatically restarted. Therefore, the power supply can be restarted more conveniently and effectively. Can do.

  Further, since the capacitor C12 is connected between the transistor Q4 and the feeding coil 1, the capacitor C12 is connected to the final output stage as the information transmitting / receiving device SP, so that the kickback voltage can be reliably detected. It is possible to control whether the power supply to the display device P is active.

  Furthermore, since the capacitor C12 and the comparator 6 constitute a kickback voltage detection circuit, it is possible to detect information more safely by instantaneously detecting the occurrence of the kickback voltage and stopping the power supply to the feeding coil 1. The transmission / reception device SP can be protected.

  Even when power is supplied to the display device P by non-contact electromagnetic induction, the information transmitting / receiving device SP can be effectively protected.

Further, since the check the reoccurrence of the kick-back voltage to the predetermined time T ₁ after can resume effectively powered.

Furthermore, since repeated to confirm the re-occurrence of the kickback voltage whenever the said time T ₁ is passed, can be resumed quickly powered confirm it after kickback voltage no longer occurs.

Further, since the time T ₁ is a 6 seconds, it is possible to resume the power supply without causing inconvenience to the user.

  In the above-described embodiment, when displaying characters or the like corresponding to the display information Sdt on the display device P, supply of power to the display device P and transmission of the display information Sdt itself to the display device P by infrared IR. However, the present invention is not limited to this, and the information processing apparatus is configured to execute information processing that is set in advance by supplying power without contact without contact. The present invention can be widely applied when the target information is transmitted by infrared IR.

  For transmitting the information to be processed, wireless transmission means such as a so-called wireless LAN (Local Area Network) that is becoming popular in recent years can be used in addition to infrared IR.

  As described above, the present invention can be used for protection and power saving of the information transmitting / receiving device SP side in the field of non-contact power transmission using electromagnetic induction and wireless information transmission, Especially in the field of postings or advertisements posted on indoor walls, etc., in order to protect the information transmission / reception device SP that supplies power when the display content of the postings or advertisements is electrically rewritten for each display device P If applied, a particularly remarkable effect can be obtained.

1 is an external perspective view showing an outline of a power information transmission system including an information transmitting / receiving apparatus according to an embodiment. It is a block diagram which shows the structure of the electric power information transmission system which concerns on embodiment. It is a circuit diagram which shows the structure of the information transmitter / receiver which concerns on embodiment. It is a figure explaining kickback voltage, (a) is a figure which illustrates the waveform of the current impressed to a feed coil, and (b) is a figure which illustrates the voltage change of a feed coil in the usual feeding state. (C) is a figure which illustrates the voltage change of a feed coil in case a receiving coil does not exist. It is a timing chart which shows operation | movement of the information transmitter / receiver which concerns on embodiment. It is a circuit diagram which shows the structure of the power receiving part which concerns on embodiment. It is a flowchart which shows operation | movement of the information transmitter / receiver which concerns on embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power supply coil 2 Power supply part 4, 50 Communication terminal 5 Smoothing circuit 6 Comparator 7 Power supply stop part 8, 52 Control part 9, 51 Communication control part 10 Power reception coil 20 Power reception part 30 Drive part 40 Display 100 Male plug S Power information Transmission system P Display device W Mounting surface B Power supply unit D Display unit SP Information transmission / reception device PC Control terminal IN Input unit S ₁₀₀ AC current Sb Power supply signal Sd Detection signal Ss Power supply signal Sps Power reception signal Srb Drive signal Sd Display drive signal Sdd Display Drive signal Scbb, Scrt, Scb, Scr Control signal Sop Operation signal Sdp Display signal Sdt Display information IR Infrared C1, C2, C3, C4, C5, C6, C7, C8, C9, C11, C12, C13, C14, C15, C16, C17, C18, C19, C21, C32 capacitors C10, C20, C30, C31 Ceramic capacitors R1, R2, R3, R4, R5, R6, R7, R8, R10, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25 , R26, R27, R28, R30, R31, R32, R33, R34 Resistor IC1, IC2, IC3, IC4, IC5 Integrated circuit D2, D3, D4, D10, D11, D12, D13, D14 Diodes Q1, Q2, Q3 , Q4, Q5 Transistors BG Bridge circuit RG Three-terminal regulator

Claims (14)

In an information transmission device that transmits processing target information to an information processing device that is to process processing target information,
State detecting means for detecting whether or not the information processing apparatus is in a state capable of receiving the processing target information;
When it is detected that the information processing apparatus is in a state capable of receiving the processing target information, power supply means for supplying power to the information processing apparatus in a non-contact manner;
A transmission control means for wirelessly transmitting the processing target information to the information processing apparatus after starting the power supply of the power;
An information transmission device comprising: The information transmission device according to claim 1,
Stop means for stopping transmission of the processing target information when it is detected that the information processing apparatus is no longer in a state where the processing target information can be received after the transmission of the processing target information is started. An information transmission device comprising: In the information transmission device according to claim 1 or 2,
The transmission control means transmits the processing target information to the information processing apparatus by infrared rays. In the information transmitter according to any one of claims 1 to 3,
When it is detected that the information processing apparatus is ready to receive the processing target information, the information processing apparatus identifies whether the information processing apparatus is an information processing apparatus that should receive the processing target information. And further comprising identification means,
The transmission control means transmits the processing target information to the information processing apparatus when the information processing apparatus is identified as the information processing apparatus that should receive the processing target information after the power supply power supply starts. An information transmitting apparatus which is started. The information transmission device according to claim 4,
The transmission control means stops the supply of power supply power when the information processing apparatus is not identified as an information processing apparatus that should receive the processing target information after the start of power supply of the power supply power. Information transmission device. In the information transmitter according to any one of claims 1 to 5,
The power supply means is
A power supply coil for supplying power to the power reception unit in the information processing apparatus by non-contact electromagnetic induction;
Applying means for applying the power to the power supply coil;
With
The state detection means includes
Kickback voltage detecting means for detecting a kickback voltage generated in the power supply coil;
Confirmation means for confirming whether or not the kickback voltage is generated again after the supply of power is stopped by the power supply stop means;
With
Further, the power supply means includes
Based on the detected kickback voltage, the power supply stopping means for stopping the supply of the power to the power supply coil by the applying means;
Resuming means for resuming supply of the power supply to the power supply coil by the applying means when the confirmation means confirms that the kickback voltage is not generated again;
An information transmission device comprising: The information transmission device according to claim 6,
The information transmission device, wherein the kickback voltage detection means is connected between the feeding coil and the application means. The information transmission device according to claim 6 or 7,
The kickback voltage detection means includes
Means to be charged by the kickback voltage;
Comparing means for detecting whether or not the voltage of the charged means that has increased due to the charging exceeds a preset threshold voltage;
With
The power source power stopping unit stops the supply of the power source power to the power feeding coil by the applying unit when the voltage of the charged unit exceeds the threshold voltage. In the information transmitting device according to any one of claims 6 to 8,
The power receiving unit includes a thin power receiving coil,
The power transmission coil is disposed at a position facing the power receiving coil when the information processing apparatus is disposed at a position where the information processing apparatus can receive the processing target information. In the information transmitter according to any one of claims 6 to 9,
The information transmitting apparatus according to claim 1, wherein the confirmation unit confirms whether or not the kickback voltage is generated again after a preset time has elapsed after the supply of power is stopped. The information transmission device according to claim 10,
The information transmitting means characterized in that the confirmation means repeatedly confirms whether or not the kickback voltage is generated again every time the preset time elapses after the supply of power is stopped. apparatus. The information transmission device according to claim 10 or 11,
The information transmission apparatus according to claim 1, wherein the preset time is 6 seconds. The information processing apparatus that receives transmission of the processing target information by the information transmission apparatus according to any one of claims 1 to 12,
A power receiving unit that receives the supply of power from the power supply means in a non-contact manner;
Receiving means for receiving the processing object information transmitted from the information transmitting means;
Processing means for processing the received processing target information;
An information processing apparatus comprising: The information processing apparatus according to claim 13,
The information processing apparatus, wherein the processing means is display control means for displaying the received processing target information on a display means.

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