JP2010026606A - Handy terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a conventional handy terminal consumes a large power even when being turned off. <P>SOLUTION: The handy terminal 1 includes: a CPU 82; an RAM 83; a power supply circuit 81 to which a power is supplied from a battery A; a power supply switch 841 for accepting an instruction for switching an ON state for making it possible to read an information code and an OFF state for making it impossible to read the information code; a mode acceptance part 842 for accepting either a first mode in which the CPU 82 is shifted to a sleep state that it is restored from an OFF state to an ON state according to the operation of an operation part 84 from the outside and the storage content the RAM 83 is maintained or a second mode in which the driving of the CPU 82 is stopped, and the storage content of the RAM 83 is not maintained; a storage part 86; an RTC 85 for counting a time when a power is supplied from the battery A; and a power source control part 87 for controlling the power source circuit 81 so that any power is not supplied to the CPU 82 and the RAM 83 when the second mode is stored by the storage part 86 in response to an instruction from the ON state to the OFF state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a handy terminal that is carried by a user and reads an information code such as a barcode.

  Conventionally, the handy terminal has been used to read information codes such as barcodes attached to products and their packaging boxes in factories and warehouses. Some handy terminals are connected to commercial power sources and communication networks, but some are not connected to them. Hereinafter, a so-called cordless handy terminal that is not connected to a commercial power source or a communication network will be described.

  A cordless handy terminal is equipped with a rechargeable battery or a dry battery, and the handy terminal performs operations such as reading an information code such as a bar code and two-dimensional information by using electric power from them. The handy terminal is gripped by the user when reading the information code, and when the handy terminal is not gripped by the user, the handy terminal is placed on the cradle having a charging function. When the cradle is connected to a commercial power source and the rechargeable battery is attached to the handy terminal, when the handy terminal is correctly placed on the cradle, the rechargeable battery attached to the handy terminal is charged. Further, data acquired by the handy terminal is transmitted to the host computer via the cradle and managed by the host computer. A handy terminal system is constituted by these handy terminals, a table, and a host computer.

  By the way, when the handy terminal does not perform an operation such as reading an information code, that is, when it is not used by the user, the power switch is set to OFF by the user. Thus, even if the power switch is set to OFF, the power supply circuit is a central processing unit (CPU) inside the handy terminal, a random access memory (RAM) for executing a large-scale program, or a clock circuit. Power is supplied to the Real-Time Clock (real time clock, RTC). As a result, the CPU shifts to the sleep state, the stored contents of the RAM are maintained, and the current time (year / month / day) indicated by the RTC is counted every moment.

Therefore, when the user sets the power switch of the handy terminal to ON, the information stored in the RAM is retained, so the user can resume the operation of the handy terminal from the state immediately before the power switch is set to OFF. Can do. Therefore, the conventional handy terminal is very convenient for the user. Also, since the current time is counted every moment, the user does not need to reset the current time when resuming the operation of the handy terminal.
JP 2004-192108 A JP 2004-220504 A

  By the way, when the power switch of the handy terminal is set to OFF, it is necessary to supply power to the CPU and RAM in order to put the CPU in the sleep state and maintain the stored contents of the RAM. That is, even if the power switch is set to OFF, power is consumed in the conventional handy terminal. For this reason, especially for users who use dry batteries as a power source with little use of the handy terminal, set the power switch to ON unless the handy terminal has been used for a long time after setting the power switch to OFF. However, the battery power is exhausted and the handy terminal cannot be reused. In order to prevent such a problem, the user must remove the dry battery from the handy terminal after using the handy terminal.

  When the dry battery is removed from the handy terminal, there is no power source inside the handy terminal, so that not only the CPU stops operating and the stored contents of the RAM are not maintained, but also the RTC operation stops. When the operation of the RTC is stopped when the operation of the handy terminal is to be resumed, the user must set the current time on the handy terminal after mounting the dry battery on the handy terminal. The work of resetting the current time is felt that the user is forced to perform a very troublesome work.

  Also, even if the user is using a rechargeable battery as a power source, the power switch should be turned off if the handy terminal is used and placed on a cradle that has a charging function and does not perform the charging function. If the handy terminal is not used for a long time after setting, the rechargeable battery power will be consumed. Therefore, even if the power switch is set to ON in such a state, the handy terminal cannot be reused. Since the operation of the RTC stops when the power of the rechargeable battery is consumed, when the user tries to resume the operation of the handy terminal, the user must reset the current time in the handy terminal after charging the rechargeable battery. The work of resetting the current time is felt that the user is forced to perform a very troublesome work.

  That is, the conventional handy terminal has a problem that a large amount of power is consumed even when the power switch is set to OFF.

  The present invention can reduce power consumption when the power switch is set to OFF, and also forces the user to reset the current time when the power switch is set to OFF and then reused. The purpose is to provide a handy terminal that does not.

  In order to solve the above problems and achieve the above object, the handy terminal of the present invention has a display unit on the upper surface, an operation unit on the lower surface, and a battery mounting unit on the back facing the operation unit. An apparatus for reading an information code using electric power from a battery mounted on a unit, a CPU for performing predetermined processing using electric power, a RAM for storing predetermined data using electric power, A power supply circuit that is supplied with power from the battery and supplies power to the CPU and the RAM, and an ON state that is provided in the operation unit and that can read the information code and an OFF state that cannot read the information code An ON / OFF instruction accepting unit that accepts an instruction to switch between and an OFF state in which the information code cannot be read, and the CPU operates the operation unit from the outside Accordingly, a first mode for shifting from the OFF state to a sleep state capable of returning to the ON state and maintaining the stored contents of the RAM, and a first mode in which the CPU is stopped and the stored contents of the RAM are not maintained. A mode receiving unit that accepts any one of the two modes, a storage unit that stores the mode received by the mode receiving unit, a real-time clock that is supplied with power from the battery and counts time, and receives power from the battery. When the storage unit stores the second mode when the ON / OFF instruction receiving unit receives an instruction to shift from the ON state to the OFF state, the CPU and A power control unit that controls the power circuit so that power is not supplied to the RAM, and the CPU is configured to receive the ON / OFF instruction. When the storage unit has stored said first mode upon receiving an instruction to shift from the state of the ON to the state of the OFF, the shift to the sleep state.

  Thus, in the handy terminal of the present invention, when the user selects the second mode, the ON / OFF instruction receiving unit (power switch) is set with an instruction to shift from the ON state to the OFF state. However, since no power is supplied to the CPU and RAM, the power consumed when the ON / OFF instruction receiving unit (power switch) is set to OFF can be reduced. In addition, since the handy terminal of the present invention is supplied with power from the battery by the real-time clock, when an instruction to shift from the OFF state to the ON state is set in the ON / OFF instruction receiving unit (power switch). There is no need to force the user to reset the current time.

  The present invention can reduce power consumption when the power switch is set to OFF, and also forces the user to reset the current time when the power switch is set to OFF and then reused. It is possible to provide a handy terminal that does not need to be done.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  Before describing the handy terminal 1 of the present embodiment, the configuration of the handy terminal system including the handy terminal 1 will be described.

  FIG. 1 is a diagram for explaining the outline of the handy terminal system of the present embodiment. The handy terminal system according to the present embodiment is a system that acquires and manages data relating to, for example, a stocktaking operation in a factory or a warehouse. As shown in FIG. 1, a handy terminal 1, a stand 2, and a host computer 3 It consists of and. The feature of the handy terminal 1 of the present embodiment relates to the use of electric power. The characteristic portions will be described later, and before that, general configurations of the handy terminal 1, the cradle 2, and the host computer 3 will be described. FIG. 2 is a diagram for explaining a general configuration of the handy terminal system according to the present embodiment.

  The handy terminal 1 is a so-called cordless handy terminal that is not directly connected to the commercial power source 6 or the communication network 7, and is used to read information codes attached to products and packaging boxes in factories and warehouses. Is called. As shown in FIG. 1, a small-capacity rechargeable battery 4a or a large-capacity rechargeable battery 4b or a dry battery 5 is attached to the handy terminal 1, and the handy terminal 1 uses such power to generate a bar code or two-dimensional information. Performs operations such as reading information codes. FIG. 1 shows a dry battery case 5a for protecting the dry battery 5 from an obstacle from the outside of the handy terminal 1 by covering the dry battery 5 when the dry battery 5 is attached to the handy terminal 1. . The handy terminal 1 is held by a user when reading an information code such as a barcode.

  As shown in FIG. 2, the handy terminal 1 includes a processing unit 11, a liquid crystal display device 12, an operation unit 13, a reading window 14, a pair of charging contact terminals 15a and 15b, a power control circuit 16, and a pair. Communication contact terminals 17 a and 17 b, an infrared communication window 18, and a storage unit 19.

  The processing unit 11 performs each process of the handy terminal 1 and controls each component of the handy terminal 1. The liquid crystal display device 12 displays various types of information, and the operation unit 13 is a component that is operated by the user, and accepts user instructions. The reading window 14 reads an information code such as a barcode and two-dimensional information, and the pair of charging contact terminals 15a and 15b are terminals used to supply power to the rechargeable battery 4 from the outside of the handy terminal 1, and control the power supply. The circuit 16 controls the supply of power to the rechargeable battery 4. The pair of communication contact terminals 17a and 17b are terminals used for communication between the processing unit 11 and the outside of the handy terminal 1, and the infrared communication window 18 is a means for performing infrared communication. For example, the infrared communication window 18 is used when transmitting information code data read by the reading window 14 to a portable printer. The storage unit 19 is means for storing information code data read by the reading window 14.

  FIG. 3 is a perspective view of the handy terminal 1 when viewed from the front. As shown in FIG. 3, a liquid crystal display device 12 is provided on the front side of the casing constituting the handy terminal 1, and an operation unit 13 is provided on the lower side. The operation unit 13 includes a menu key 131, a trigger key 132 for starting scanning of an information code, a four-direction key 133, a cancel key 134, an enter key 135, a numeric key 136, and a plurality of function keys 137. , And a power switch 138. In addition, the operation unit 13 includes a side trigger key 139 provided on a side surface of a housing constituting the handy terminal 1.

  FIG. 4 is a perspective view of the handy terminal 1 when viewed from the back. FIG. 5 is a perspective view when only the lower part of the handy terminal 1 is enlarged when viewed from the back. As shown in FIG. 4, a reading window 14 is provided above the rear surface of the casing constituting the handy terminal 1. 4 and 5, a pair of charging contact terminals 15a and 15b and a pair of communication contact terminals 17a and 17b are provided below the rear surface of the housing constituting the handy terminal 1. It has been. Further, as shown in FIGS. 3 to 5, an infrared communication window 18 is provided at the center of the lower surface of the casing constituting the handy terminal 1.

  FIG. 6 is a perspective view of the cradle 2. When the handy terminal 1 is not gripped by the user, the cradle 2 holds the handy terminal 1 stably as shown in FIG. In addition, as shown in FIG. 2, the cradle 2 is connected to a commercial power source 6, and when the rechargeable battery 4 is attached to the handy terminal 1, the handy terminal 1 is mounted on the cradle 2 in a stable state. When placed, the rechargeable battery 4 attached to the handy terminal 1 is charged.

  As shown in FIGS. 2 and 6, the cradle 2 includes a placement unit 21, a power supply port 22, a power supply control circuit 23, a pair of contact metal terminals for charging 24 a and 24 b, a communication port 25, and communication. Part 26 and a pair of contact metal terminals for communication 27a, 27b.

  The placement part 21 is a part on which the handy terminal 1 is placed, and includes a low part 211 and a backrest part 212 as shown in FIG. The handy terminal 1 is placed on the cradle 2 such that the lower surface of the housing constituting the handy terminal 1 is located at the lower portion 211 and the rear surface of the housing constituting the handy terminal 1 is located at the backrest portion 212. . At this time, the handy terminal 1 is held by the cradle 2 in a stable state.

  The power supply port 22 is a port for connecting to the commercial power supply 6, and is provided on the rear surface of the casing constituting the cradle 2. The power supply control circuit 23 is connected to the commercial power supply 6. Occasionally, a charging voltage is generated from the electric power from the outside of the cradle 2 and the voltage is applied to the pair of charging contact metal terminals 24a and 24b. A pair of charging contact metal terminals 24a and 24b correspond to the pair of charging contact terminals 15a and 15b of the handy terminal 1, and when the handy terminal 1 is placed on the table 2 in a stable state, Each of the pair of charging contact metal terminals 24 a and 24 b is in mechanical and electrical contact with each of the pair of charging contact terminals 15 a and 15 b of the handy terminal 1. When the rechargeable battery 4 is attached to the handy terminal 1, when the pair of charging contact metal terminals 24a and 24b and the pair of charging contact terminals 15a and 15b of the handy terminal 1 come into contact with each other, the handy terminal 1 is connected to the table 2. Electric power from the commercial power supply 6 is supplied to the handy terminal 1 by the power supply control circuit 23 and the rechargeable battery 4 is charged.

  The communication port 25 is a port for connecting to a communication network 7 such as a local area network (LAN) or a wide area network (WAN) to which the host computer 3 is connected. When the communication port 25 is connected to the communication network 7, communication between the cradle 2 and the host computer 3 becomes possible. The communication unit 26 mediates communication between the handy terminal 1 and the host computer 3. The pair of communication contact metal terminals 27a, 27b correspond to the pair of communication contact terminals 17a, 17b of the handy terminal 1, and when the handy terminal 1 is placed on the cradle 2 in a stable state, The pair of communication contact metal terminals 27a and 27b are in mechanical and electrical contact with the pair of communication contact terminals 17a and 17b of the handy terminal 1, respectively. The contact enables communication between the handy terminal 1 and the cradle 2. In addition, since each of the pair of communication contact terminals 17a and 17b of the handy terminal 1 and each of the pair of communication contact metal terminals 27a and 27b of the pedestal 2 are in mechanical and electrical contact with each other, the handy terminal 1 Full duplex communication can be performed with the cradle 2.

  Thus, the cradle 2 has a function of charging the rechargeable battery 4 attached to the handy terminal 1 and a function of communicating with the handy terminal 1 and the host computer 3 respectively.

  The host computer 3 is connected to the cradle 2 via the communication network 7 and acquires and manages the data acquired by the handy terminal 1 via the cradle 2.

  Next, the part regarding the use of electric power, which is a feature of the handy terminal 1 of this embodiment, will be described.

  First, the configuration of the handy terminal 1 when focusing on the use of electric power will be described.

  FIG. 8 is a diagram illustrating the configuration of the handy terminal 1 when attention is paid to the use of power. As shown in FIG. 8, regarding the use of power, the handy terminal 1 includes a power supply circuit 81, a CPU 82, a RAM 83, an operation unit 84 including a power switch 841 and a mode receiving unit 842, an RTC (real time clock) 85, A storage unit 86, a power supply control unit 87, a battery detachment detection unit 88, and an auxiliary power supply 89. Further, the battery A, which is a dry battery or a rechargeable battery, is mounted on a battery mounting portion provided on the back surface of the handy terminal 1 facing the operation unit 13 shown in FIG. The operation unit 84, the RTC 85, the power control unit 87, and the battery detachment detection unit 88 are directly supplied individually.

  The power supply circuit 81 is means for supplying power from the battery A and supplying predetermined power to the CPU 82 and the RAM 83. The CPU 82 is a unit that receives power from the power supply circuit 81 and performs predetermined processing using the power. For example, the CPU 82 transmits information code data to the table 2 (see FIGS. 1, 2, 6, and 7) according to a user instruction input from the operation unit 84, or generates a warning buzzer (not shown). Or control. The RAM 83 is means for storing information code data read in the reading window 14 (FIGS. 2 and 4).

  The operation unit 84 corresponds to the operation unit 13 in FIGS. 2 and 3, is supplied with power from the battery A, and includes the power switch 841 and the mode reception unit 842 as described above. The power switch 841 corresponds to the ON / OFF instruction receiving unit of the handy terminal of the present invention, and is a means for receiving an instruction for switching between an ON state in which the information code can be read and an OFF state in which the information code cannot be read. is there. The power switch 841 corresponds to the power switch 138 shown in FIG. 3, for example. The mode reception unit 842 is in an OFF state in which the information code cannot be read, and the CPU 82 shifts to a sleep state in which the CPU 82 can return from the OFF state to the ON state in response to an operation of the operation unit 84 from the outside. It is means for accepting either the first mode for maintaining the stored contents of the RAM 83 or the second mode for stopping the CPU 82 and not maintaining the stored contents of the RAM 83. In other words, the mode reception unit 842 supplies power to the CPU 82 and the RAM 83 when the power switch 841 is set to OFF, and sets the CPU 82 and RAM 83 to the power when the power switch 841 is set to OFF. It is means for accepting any of the second mode in which no power is supplied. Note that the mode reception unit 842 receives either the first mode or the second mode when the information code can be read. The mode receiving unit 842 corresponds to each key of the operation unit 13 such as the function key 137 shown in FIG.

  The RTC 85 is a clock circuit that receives power from the battery A and counts the time. The storage unit 86 is a unit that stores the mode received by the mode reception unit 842, and is configured by a specific storage area of a ROM, for example.

  When the power is supplied from the battery A and the power switch 841 receives an instruction to shift the power switch 841 from the ON state to the OFF state, when the storage unit 86 stores the second mode, the CPU 82 And means for controlling the power supply circuit 81 so that power is not supplied to the RAM 83. In addition, when the power control unit 87 receives an instruction to shift the power switch 841 from the OFF state to the ON state, the power control unit 87 controls the power circuit 81 so that power is supplied to the CPU 82 and the RAM 83. The power control unit 87 is realized by, for example, a D-FF latch circuit.

  When the battery A is supplied with power from the battery A and is in an ON state and the attached battery A is detached from the battery attachment part of the handy terminal 1, the battery removal detection unit 88 detects the phenomenon and detects the battery A. Is a means for outputting to the CPU 82 a battery removal signal indicating that the battery is disconnected from the handy terminal 1.

  The auxiliary power supply 89 supplies auxiliary power to the power supply circuit 81, the operation unit 84, the RTC 85, the power supply control unit 87, and the battery removal detection unit 88 when the battery A is disconnected from the battery mounting unit of the handy terminal 1. It is a means to supply.

  When the CPU 82 receives a battery removal signal from the battery removal detection unit 88, the CPU 82 shifts to the sleep state described above. Further, when the CPU 82 receives an instruction to shift the power switch 841 from the ON state to the OFF state, the CPU 82 shifts to the sleep state described above when the storage unit 86 stores the first mode.

  Next, the operation of the handy terminal 1 when focusing on the use of electric power will be described.

  FIG. 9 is a diagram illustrating an operation procedure of the handy terminal 1 when attention is paid to the use of power. For convenience of explanation, description of the operation of the handy terminal 1 from the state in which the handy terminal 1 is performing a normal operation such as reading of an information code is started.

  When the handy terminal 1 is performing a normal operation, that is, in an ON state in which the information code can be read, the mode receiving unit 842 displays the CPU 82 when the power switch 841 is set to OFF. The first mode in which the memory contents of the RAM 83 are maintained while the sleep mode is set to the sleep state, and the second mode in which the CPU 82 stops driving and the memory contents of the RAM 83 are not maintained when the power switch 841 is set to OFF. Is received from the user (S1). The mode reception unit 842 outputs the received mode information to the CPU 82, the CPU 82 sets the mode information received from the mode reception unit 842 in the storage unit 86, and the storage unit 86 is received by the mode reception unit 842 according to the setting by the CPU 82. Mode is stored (S2).

  After that, the user sets an instruction to shift from the ON state where the information code can be read to the OFF state where the information code cannot be read to the power switch 841, and the power switch 841 receives the instruction. Accept (S3). Then, the power switch 841 outputs to the CPU 82 an OFF signal that instructs to shift from the ON state to the OFF state. Upon receiving the OFF signal, the CPU 82 reads the mode stored in the storage unit 86 (S4), and determines whether the read mode is the first mode (backup mode) or the second mode. (S5).

  When the mode read by the CPU 82 is the second mode (No in S5), that is, when the storage unit 86 stores the second mode (No in S5), the CPU 82 supplies power to the CPU 82 and the RAM 83. A power supply control signal for preventing supply is output to the power supply control unit 87. Upon receiving the power control signal from the CPU 82, the power control unit 87 outputs a power control signal for controlling the power circuit 81 so that power is not supplied to the CPU 82 and the RAM 83. In response to the power control signal, the power supply circuit 81 stops supplying power to the CPU 82 and the RAM 83 (S6).

  As a result, since power is not supplied to the CPU 82 and RAM 83 when the information code cannot be read, the power consumption when the power switch 841 is set to OFF can be made smaller than before. it can. If the RAM 83 is a dynamic RAM, refreshing is necessary to retain the stored contents. Therefore, even if the battery A is a new dry battery, its power is consumed in about two weeks. Power is directly supplied to the RTC 85 from the battery A. However, if the battery A is a new dry battery only to maintain the operation of the RTC 85, the power is not consumed for about half a year. Therefore, if the driving state of the CPU 82 is stopped in the OFF state and the stored contents of the RAM 83 are not maintained, the power of the battery A lasts longer.

  The RTC 85 is directly connected to the battery A and is directly supplied with power from the battery A. The RTC 85 sets the time regardless of whether the power switch 841 is instructed to shift from the ON state to the OFF state. Keep counting. Therefore, when the use of the handy terminal 1 is resumed from the OFF state, the user is not forced to reset the current time. The current flowing from the battery A to the RTC 85 is about 100 μA.

  When shifting from the ON state to the OFF state, the power switch 841 waits for an instruction to shift from the OFF state to the ON state (S7). When the user sets an instruction to shift from the OFF state to the ON state in the power switch 841 (Yes in S7), the power switch 841 receives the instruction and restart signal for shifting from the OFF state to the ON state. Is output to the power supply controller 87.

  When receiving the restart signal, the power control unit 87 outputs a power control signal for supplying power to the CPU 82 and the RAM 83 to the power circuit 81. When the power supply circuit 81 receives the power supply control signal from the power supply control unit 87, the power supply circuit 81 supplies power to the CPU 82 and the RAM 83.

  Thereby, the handy terminal 1 shifts to a state in which a normal operation is performed.

  By the way, when it is determined in step S5 that the mode read by the CPU 82 is the first mode (Yes in S5), that is, when the storage unit 86 stores the first mode (Yes in S5). The power supply circuit 81 continues to supply power to the CPU 82 and the RAM 83.

  Then, the CPU 82 shifts to the sleep state, and the stored contents of the RAM 83 are maintained (S10). That is, the CPU 82 cannot read the information code unless the operation unit 84 is operated, and shifts to a state where the information code can be read if the operation unit 84 is operated. The RAM 83 is in a self-refresh mode in which data is held. Migrate to When the operation unit 84 is operated in the sleep state (Yes in S11), the CPU 82 releases the sleep state (S12), and the handy terminal 1 returns to the normal operation.

  In addition, the battery A may be detached from the battery mounting portion of the handy terminal 1 while the handy terminal 1 is performing a normal operation. In such a case, the battery detachment detection unit 88 detects the phenomenon and outputs a battery detachment signal indicating that the battery A is detached from the handy terminal 1 to the CPU 82.

  When the CPU 82 receives a battery removal signal from the battery removal detection unit 88, the CPU 82 shifts to the sleep state regardless of the mode stored in the storage unit 86. At this time, the auxiliary power supply 89 supplies power to the power supply circuit 81, the operation unit 84, the RTC 85, and the battery removal detection unit 88. Therefore, even if the battery A is removed from the battery mounting portion of the handy terminal 1, the stored contents of the RAM 83 are maintained and the RTC 85 continues to count the time. The auxiliary power of the auxiliary power supply 89 has only a short period of about 10. Thereafter, the process proceeds to step S11.

  As described above, in the handy terminal 1 of the present embodiment, the power supply circuit 81 that supplies power to the CPU 82 and the RAM 83 and the RTC 85 are individually connected to the battery A. Therefore, if the user selects the second mode in which no power is supplied to the CPU 82 and the RAM 83 in the OFF state, the power consumption in the OFF state can be reduced. Further, when the handy terminal 1 is reused from the OFF state, the user is not forced to reset the current time. Further, when the user sets the power switch 841 to OFF, the user is not forced to remove the battery A from the handy terminal 1.

  As described above, when the storage unit 86 stores the second mode and the user sets an instruction to shift from the ON state to the OFF state to the power switch 841, the power supply circuit 81 has the CPU 82. And the supply of power to the RAM 83 is stopped. Stopping the supply of power from the power supply circuit 81 to the CPU 82 and the RAM 83 is executed, for example, by providing a switch between the power supply circuit 81 and the CPU 82 and the RAM 83 and disconnecting the switch. However, the supply of power from the power supply circuit 81 to the CPU 82 and the RAM 83 may be stopped by means other than such means.

  The handy terminal of the present invention is useful as a device for reading an information code such as a barcode.

The figure for demonstrating the outline of the handy terminal system of this Embodiment The figure for demonstrating the general structure of the handy terminal system of this Embodiment The perspective view of the handy terminal 1 of the present embodiment when viewed from the front The perspective view of the handy terminal 1 of the present embodiment when viewed from the back The perspective view when expanding only the lower part of the handy terminal 1 of the present embodiment when viewed from the back. The perspective view of the stand 2 of this Embodiment The figure which shows a mode when the handy terminal 1 is mounted in the stand 2 The figure which shows the structure of the handy terminal 1 when paying attention to use of electric power The figure which shows the procedure of operation | movement of the handy terminal 1 when paying attention to use of electric power

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Handy terminal 2 Stand 3 Host computer 4 Rechargeable battery 5 Dry battery 6 Commercial power supply 7 Communication network 11 Processing part 12 Liquid crystal display device 13 Operation part 14 Reading window 15a, 15b A pair of contact terminals for charging 16 Power supply control circuit 17a, 17b A pair Contact terminal for communication 18 Infrared communication window 19 Storage unit 81 Power supply circuit 82 CPU
82 RAM
84 Operation section 841 Power switch 842 Mode reception section 85 RTC
86 Storage Unit 87 Power Supply Control Unit 88 Battery Removal Detection Unit 89 Auxiliary Power Supply

Claims (3)

A handy terminal that has a display unit on the upper surface, an operation unit on the lower surface, and a battery mounting unit on the back facing the operation unit, and reads the information code using the power from the battery mounted on the battery mounting unit. There,
A CPU that performs predetermined processing using electric power;
RAM for storing predetermined data using electric power;
A power circuit that is supplied with power from the battery and supplies power to the CPU and the RAM;
An ON / OFF instruction accepting unit provided in the operation unit for accepting an instruction to switch between an ON state in which the information code can be read and an OFF state in which the information code cannot be read; and reading the information code The CPU is in an OFF state in which the CPU shifts from the OFF state to a sleep state in which the CPU can return to the ON state in response to an external operation of the operation unit, and maintains the stored contents of the RAM. A mode receiving unit that receives either the first mode or the second mode in which the CPU is stopped and the stored content of the RAM is not maintained;
A storage unit for storing a mode received by the mode reception unit;
Real-time clock that counts the time when power is supplied from the battery;
When the storage unit stores the second mode when power is supplied from the battery and the ON / OFF instruction receiving unit receives an instruction to shift from the ON state to the OFF state. A power control unit for controlling the power circuit so that power is not supplied to the CPU and the RAM,
The CPU shifts to the sleep state when the storage unit stores the first mode when the ON / OFF instruction reception unit receives an instruction to shift from the ON state to the OFF state. Yes Handy terminal. The power control unit controls the power circuit so that power is supplied to the CPU and the RAM when the ON / OFF instruction receiving unit receives an instruction to shift from the OFF state to the ON state. The handy terminal according to claim 1. Furthermore,
An auxiliary power supply for supplying auxiliary power to the power supply circuit and the real-time clock;
When power is supplied from the battery and the mounted battery is disconnected from the handy terminal, the phenomenon is detected to indicate that the battery is disconnected from the handy terminal. A battery removal detecting unit for outputting a battery removal signal to the CPU;
The handy terminal according to claim 1, wherein the CPU shifts to the sleep state when the battery removal signal is received from the battery removal detection unit.

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