JP4712742B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device such as a cellular phone in which a display device such as electronic paper is mounted in a housing, which does not require power for continuing the display of the same contents once the display is performed.

Electronic paper has recently attracted attention as a display device that does not require power to maintain the display once it is displayed. Some electronic pavers have already been put to practical use for advertisements in stations. Electronic paper is a new display device characterized by being flexible, easy to read, and low in price like paper.
In addition, information can be rewritten at any time, and once displayed, the contents are saved without requiring power. The thickness is very thin, approximately 200 microns to 300 microns, which is close to paper, and is as flexible as paper.

  The structure is relatively simple. The charged toner used in a copying machine or the like is sealed between two plastics, and a voltage of several volts to several tens of volts is applied. As a result, the inner surface of the plastic is charged. Adsorption / desorption of toner occurs and information is written.

  Further, color display is also possible by dividing one pixel into R, G, and B or three layers of CMY. Such an image forming technique is called an In-Plane type electrophoresis system, but several other image forming techniques are known.

  On the other hand, with the diversification of mobile phones, various designs are applied to the surface of the mobile phone housing, and many users recognize it as fashion.

  In order to respond to this user need, a plurality of case covers are prepared, and by changing them, the appearance design is changed, and a dress-up type mobile phone has appeared (for example, see Patent Document 1).

Furthermore, in order to improve usability, a proposal has been made to change the housing design by mounting the above-described electronic paper on the housing and displaying an image based on the user's preference (see, for example, Patent Document 2). ).
JP 2003-143280 A JP-A-2005-210320

By the way, the above-mentioned electronic devices such as mobile phones are uniquely identified for the manufacturing process and shipment in the factory, or for the maintenance of the product after the manufacturing, including the management code such as the manufacturing number and serial number. For example, a management seal including a bar code or the like on which internal information is printed is affixed.
In this case, there is a problem that the internal information of the mobile phone does not match the information printed on the sticker due to an operator's affixing operation mistake. In addition, when transferring a mobile phone in a store, for example, if the seal is peeled off, internal information of the mobile phone is required. In this case, the mobile phone is connected to a PC or the like via a cable. It was necessary to read internal information by serial communication.
As described above, the conventional electronic device has a problem that it may be difficult to confirm internal information.

  SUMMARY An advantage of some aspects of the invention is that it provides an electronic device that can easily check internal information.

  In order to solve the above-described problem, the electronic device according to the first aspect of the present invention displays an image and continues displaying the image until the displayed image is erased or overwritten. Display means that does not require power to continue displaying the image, internal information storage means for storing internal information uniquely set in the own device, predetermined information storage means for storing predetermined information, and the predetermined information storage It is determined whether or not the predetermined information is stored in the means, and when it is determined that the predetermined information is not stored in the predetermined information storage means, the internal information stored in the internal information storage means Control means for displaying information on the display means, and when it is determined that the predetermined information is stored in the predetermined information storage means, the control means for erasing the internal information displayed on the display means; It includes those were.

  In the electronic device according to the first aspect of the present invention, the predetermined information may be a telephone number.

  The electronic device according to the second aspect of the present invention is configured to continue displaying the image until the image is displayed and the displayed image is erased or overwritten, and the power to continue displaying the image. Display means, internal information storage means for storing internal information uniquely set for the own device, and monitoring the transition of the operation mode of the own device. When the internal information stored in the internal information storage means is displayed, the internal information is displayed on the display means, and the operation mode transitions from the predetermined maintenance mode to another mode, the display means Control means for erasing the internal information displayed on the screen.

  Further, in the electronic apparatus according to the second aspect of the present invention, the control unit may be configured to execute a process of updating built-in software as the predetermined maintenance mode.

  ADVANTAGE OF THE INVENTION According to this invention, the electronic device which can confirm internal information easily can be provided.

  FIG. 1 is a front view showing an appearance of a mobile phone 1 as an electronic apparatus according to an embodiment of the present invention in an open state, and FIG. 2 is a side view showing the appearance of the mobile phone 1 in an open state. 3A is a front view showing the appearance of the mobile phone 1 in an open state, and FIG. 3B is a rear view showing the appearance of the mobile phone 1 in an open state.

The mobile phone 1 has a so-called foldable housing structure, and includes a receiving housing 2 and a transmitting housing 3 that are rotatably connected to each other between an open state and a closed state. .
The receiver case 2 and the transmitter case 3 form the entire case as the mobile phone 1 by connecting the end portions thereof by the connecting portion 4 that is the center of rotation.
The receiving housing 2 and the transmitting housing 3 are each formed in a generally thin rectangular parallelepiped shape, and are overlapped with each other in the closed state, and the outlines of the receiving housing 2 and the transmitting housing 3 are substantially the same when viewed from the other housing side. It is supposed to be.

In addition, the receiving housing 2 is in a closed state, the front side case 6 facing the transmitting housing 3, the back side case 7 on the back side, and the panel 8 attached to the back side of the back side case 7. And. The front side S1 facing the transmission case 3 in the closed state of the receiving case 2 is constituted by a front case 6, and the opposite rear side S 2 is constituted by a rear case 7 and a panel 8.
The front side case 6, the back side case 7, and the panel 8 are each formed of, for example, a nonconductive resin.

A sound emitting hole 12 of a speaker for call (not shown) is opened in the front surface S1 of the receiving case 2. The receiving case 2 is provided with a main display unit 13 (display monitor) for displaying images and characters on the front surface S1, and a sub-display unit 14 (FIG. 3 (a)) for displaying images and characters on the back surface S2. ing.
That is, the main display unit 13 is provided at a position hidden in the closed state, and the sub display unit 14 is provided at a position not hidden even in the closed state. The main display unit 13 and the sub display unit 14 are configured by a display device such as an LCD display device or an organic EL (Electro-Luminescence) display device.

  The panel 8 is translucent and also serves as a protective cover for the sub display unit 14. Further, a camera 20 is arranged on the inner side of the panel 8 with the back S2 side as the shooting direction.

The transmitter case 3 includes a front-side case 9 on the side facing the receiver case 2 in the closed state, a back-side case 10 on the back side, and a lid 11 that covers the back side of the back-side case 10. It has. The front surface S3 facing the receiving housing 2 in the closed state of the transmitting housing 3 is constituted by a front case 9, and the back surface S4 on the opposite side is constituted by a back case 10 and a lid 11.
The front side case 9, the back side case 10, and the lid body 11 are each formed of, for example, a non-conductive resin.

  As shown in FIG. 3B, electronic paper (hereinafter referred to as a casing display panel 80 for convenience) is mounted on the surface of the lid 11 on the back surface of the transmitter case 3. Electronic paper is a display device that does not require power to maintain the display once it is displayed as described above. Here, internal information consisting of a management code such as a manufacturing number or serial number is stored as needed. It shall be displayed.

  The casing display panel 80 is used as a display unit that displays an image and continues displaying the image until the displayed image is erased or overwritten, and does not require power to continue displaying the image. It is done.

On the other hand, a sound collecting hole 16 of a microphone for communication (not shown) is opened on the front surface S3 of the transmission housing 3, and a sound emitting hole 17 is closed on the rear surface S4 so as to be directed outwardly to a notification speaker (not shown). is doing. The transmitter case 3 is provided with an operation unit 18 including various keys exposed on the front surface S3.
The various keys are, for example, a dial key 18a, a cursor key 18b, a function key 18c, and an enter key 18d. In addition, the transmission case 3 is provided with a camera 20 having a photographing direction on the back S2 side and an infrared communication unit 21 having an infrared credit having a transmitting / receiving direction on the back S4 side.

  The connecting portion 4 has a notch 27 formed at the end of the receiving case 2, a protruding portion 28 formed at the end of the transmitting case 3, and the protruding portion 28 fitted into the cut-out portion 27. It is pivotally supported and configured.

  The notch 27 and the protrusion 28 are formed, for example, so that the width in the direction of the rotation axis (the left-right direction in FIG. 1) is about half the width of the receiving housing 2 and the transmitting housing 3. It is formed at the center in the width direction of the body 2 and the auxiliary transmission housing 3. The protruding portion 28 protrudes from the front surface S <b> 3 of the transmitting housing 3 in a direction opposite to the receiving housing 2 in the closed state at a height similar to the thickness of the receiving housing 2.

  FIG. 4 is a block diagram showing an example of the configuration of the signal processing system of the electronic device according to the embodiment of the present invention. Here, the mobile phone 1 is exemplified as the electronic device.

As shown in FIG. 4, the mobile terminal device 1 includes a receiving case 2 as a first case and a transmitting case 3 as a second case. As described above, the housing 3 is mechanically connected via the connecting portion 4 (hinge mechanism), and is electrically connected to the main cable 43 as the first cable and the camera cable as the second cable. 44.
The main cable 43 and the camera cable 44 are both constituted by a thin coaxial cable, and both connect the inside of the transmitting case and the inside of the receiving case through a hinge bearing that is inserted from the notch portion 27 into the protruding portion 28. ing.

  A thin coaxial cable has a relatively small diameter among coaxial cables, and has a diameter of 1 mm or less, for example. Recently, those having a diameter of 0.3 mm or less are also known, and have higher noise resistance than FPC, and are excellent in wiring property and flexibility.

  A main display unit 13 as a first display unit, a sub display unit 14 as a second display unit, a camera 20, and a speaker 50 are mounted on the receiving housing 2. The main display unit 13 and the sub display unit 14 are mounted with an LCD as a display device.

On the other hand, the transmitter case 3 includes a circuit board 30, a TV antenna 31, a transmission / reception antenna 35, a microphone 42, a battery pack 60, and a casing display panel 80.
On the circuit board 30, a TV tuner 32, a video decoding unit 33, an image display control unit 34, a communication processing unit 36, an audio processing unit 37, a main control unit 38, a key input processing unit 39, A memory 40, a switch circuit 41, and a casing panel display control unit 45 are mounted.

The main control unit 38 is constituted by, for example, a CPU (not shown), and when the CPU sequentially reads and executes a program recorded in the memory 40, the TV tuner 32, the video decoding unit 33, the image display control unit 34, communication It controls various peripheral LSIs such as the processing unit 36, the voice processing unit 37, the key input processing unit 39, the casing panel display control unit 45, and the like.
The main control unit 38 causes the main display unit 13 to display an image by the image display control unit 34 when the receiving case 2 and the transmitting case 3 are in the open state. Except during recording, the image display control unit 34 switches the image display from the main display unit 13 to the sub display unit 14.

Further, as will be described later, the main control unit 38 determines whether, for example, a telephone number is stored in the memory 40. If it is determined that the telephone number is not stored, the main control unit 38 similarly stores the telephone number in a predetermined area of the memory 40. Internal information such as the stored manufacturing number and serial number is displayed on the casing display panel 80 by the casing panel display control unit 45. On the other hand, when it is determined that the stored product number is stored, the casing panel display control unit 45 displays the casing information. The internal information displayed on the panel 80 is deleted.
That is, the main control unit 38 and the casing panel display control unit 45 cooperate to determine whether or not the predetermined information is stored in the predetermined information storage unit. When it is determined that predetermined information is not stored, the internal information stored in the internal information storage means is displayed on the display means, and the predetermined information is stored in the predetermined information storage means When it is determined that the internal information displayed on the display means is erased, the control means functions as “control means for deleting the internal information”.

Further, the main control unit 38 monitors the operation mode of the mobile phone 1 and detects that it has detected via the serial communication unit 46, for example, that a transition has been made to the maintenance mode due to the connection of a cable and the input of a command. As a trigger, internal information such as a manufacturing number and a serial number stored in a predetermined area of the memory 40 is displayed on the casing display panel 80 by the casing panel display control unit 45, and an operation mode is displayed by the casing panel display control unit 45. Is detected, the internal information displayed on the casing display panel 80 is erased.
That is, the main control unit 38, the casing panel display control unit 45, and the serial communication unit 46 work together to "monitor the operation mode of the own device and change to the predetermined maintenance mode. When the internal information stored in the internal information storage means is displayed on the display means, the internal information is displayed on the display means, and the operation mode transitions from the predetermined maintenance mode to another mode, It functions as a “control means for deleting the internal information displayed on the display means”.

  The TV tuner 32 converts, for example, a terrestrial digital broadcast wave received via the TV antenna 31 into an intermediate frequency signal and demodulates it, and further obtains the demodulated signal as a video signal component and an audio signal component. And are supplied to the video decoding unit 33 and the audio processing unit 37, respectively. The audio processing unit 37 generates an audio signal from the input audio signal component, and outputs it to the speaker 50 of the receiving housing 2 via the main cable 43.

  The video decoding unit 33 decodes the input video signal component and outputs the decoded video signal component to the image display control unit 34 via the common bus 100. The image display control unit 34 converts the decoded signal output from the video decoding unit 33 into image data according to a predetermined format, and outputs the image data to the main display unit 13 of the receiver housing 2 via the main cable 43.

  Further, the image display control unit 34 acquires image data captured and generated by the camera 20 via the camera cable 44 and the common bus 100, converts the image data into image data according to a predetermined format, and receives the reception case via the main cable 43. 2 to the main display unit 13 or the sub display unit 14.

  On the other hand, the communication processing unit 36 includes a high-frequency circuit, and modulates audio data input through the microphone 42 and processed by the audio processing unit 37 and transmits it via the transmission / reception antenna 35 in order to perform radio communication using radio waves. To do. The communication processing unit 36 also demodulates a signal received via the transmission / reception antenna 35 and outputs the demodulated signal to the speaker 50 of the receiver case 2 via the audio processing unit 37.

  The key input processing unit 39 acquires the input information from various keys arranged on the operation unit 18 and passes it to the main control unit 38. Note that the various keys to be arranged include a recording key for instructing recording of a TV broadcast. Further, various keys may be arranged on the receiving housing 2 side via the main cable 43. Furthermore, the side key arranged on the side is also included.

The memory 40 is allocated with storage areas each storing a program executed by the main control unit 38, a table referred to by the program, or data (including display data) used as a work area. Here, it also functions as internal information storage means for storing internal information for uniquely identifying its own device, and further functions as predetermined information storage means for storing predetermined information such as a telephone number.
Specifically, the memory 40 is configured by a non-volatile storage device (non-volatile semiconductor memory, hard disk device, optical disk device, etc.), a randomly accessible storage device (eg, SRAM, DRAM), or the like.

  The casing display control unit 45 performs display control of a display screen displayed on the casing display panel 80 mounted on the lid 11 on the back surface of the transmission housing 3. The casing display control unit 45 displays an image on the casing display panel 80 based on display data (for example, internal information) stored in the memory 40 in accordance with a display control command sent from the main control unit 38.

  The serial communication unit 46 serves as an interface for data exchange between, for example, a PC and the built-in main control unit 38, which is connected via a cable (not shown) during maintenance in a store or the like. . For example, serial / parallel conversion is performed to capture a command generated by a PC or the like and supply the command to the main control unit 38, and parallel / serial conversion is performed to transfer data generated by the main control unit 38 to the PC. Has function.

  FIG. 5 is a view showing a cross-sectional structure of a casing display panel 80 used in the electronic apparatus according to the embodiment of the present invention. FIG. 5 (a) is a black and white casing display panel, and FIG. ) Is a diagram showing a cross-sectional structure of a color casing display panel.

  The casing display panel 80 is configured by what is called electronic paper, and here, it is assumed that the casing display panel 80 is pasted on the lid 11 on the back surface of the transmitter case 3 shown in FIG. As shown in FIG. 5A, the black and white casing display panel 80 has a four-layer structure including a transparent lower base material layer 801, an image recording layer 802, a transparent upper base material layer 803, and a protective layer 804. .

A lower grid electrode is provided on the upper part of the transparent lower base material layer 801, that is, on the outer side of the cover of the mobile phone 1, and on the lower part of the transparent upper base material layer 803, that is, on the inner side of the cover of the mobile phone 1, An upper grid electrode is provided. The lower grid electrode described above is composed of a number of electric wires extending in parallel to the lateral direction of the mobile phone 1, and the end portions of the electric wires are connected to signal terminals connected to the casing panel display control unit 45. .
The upper grid electrode is composed of a number of electric wires extending in parallel with the vertical direction of the mobile phone 1, and the end portions of the electric wires are also connected to the signal terminals connected to the casing panel display control unit 45. ing. Thus, the lower grid electrode and the upper grid electrode are arranged so that the extending directions of the electrodes are orthogonal to each other over the entire display area of the casing display panel 80.

And the electric potential difference between the electric wire of the lower grid electrode and the electric wire of the upper grid electrode in the arbitrary area | regions of a display area is controlled by inputting the electric signal of the appropriate ON / OFF timing from the casing panel display control part 45. be able to.
As the image recording layer 802, the visible state of the region can be controlled by a potential difference applied between the lower grid electrode and the upper grid electrode, and an electric signal is input from the casing panel display control unit 45. Even if it disappears, what can maintain the visible state can be used. For example, a large number of white particles and black particles are encapsulated in a transparent microcapsule, and these are arranged at all pixel points where the wires of the lower grid electrode and the wires of the upper grid electrode intersect with each other. 802 can be used. In this case, the white particles and the black particles in each microcapsule are charged with opposite polarities.

Here, a negatively charged material is used as the white particles, and a positive belt material is used as the black particles. Therefore, when an electrical signal is input from the casing panel display control unit 45 and the potential of the lower grid electrode at a certain pixel point is negative and the potential of the upper grid electrode is positive, within the microcapsule at that pixel point Black particles are electrophoresed to the lower grid electrode side, and white particles are electrophoresed to the upper grid electrode side.
As a result, when this pixel point is viewed from the outside of the mobile phone 1, the pixel point appears white. Conversely, the pixel points when the potential of the lower grid electrode is positive and the potential of the upper grid electrode is negative appear black.

  A desired monochrome image can be displayed by performing the above display control over the entire display area. Further, the arrangement of the black particles and the white particles in each microcapsule is maintained even when the electrical signal input from the casing panel display control unit 45 is lost. Therefore, the casing display panel 80 can maintain the image display as it is even if the image once displayed is in a non-powered state. Further, in accordance with an electrical signal input from the casing panel display control unit 45, not only multi-tone monochrome images but also highlighting such as blinking and blinking can be performed.

  It is also possible to display a color image. That is, as shown in FIG. 5B, a color filter layer 805 may be provided between the transparent upper base material layer 803 and the protective layer 804. When three color filters of R, G, and B are used as the color filter layer 805, three regions adjacent to each other among the regions where the wires of the lower grid electrode and the wires of the upper grid electrode intersect with each other are defined as 1 Treat as one pixel. A color filter layer is provided so that the R, G, and B filter portions face each other in the three regions. Thus, for example, when the pixel is red, white particles are electrophoresed on the upper grid electrode side for the microcapsules facing the R filter portion, and for the microcapsules facing the G filter portion and the B filter portion. What is necessary is just to input the electric signal which a black particle electrophores to the upper lattice electrode side. As described above, the electronic device of the present invention uses a casing display panel that is black and white (FIG. 5A) or color (FIG. 5B), or a combination thereof, depending on the application. it can. Note that the mobile phone 1 of this embodiment uses a black and white casing display panel 80.

  6 and 7 are flowcharts showing the operation of the electronic apparatus according to the embodiment of the present invention, and both show only the part related to the display control of the casing display panel 80 (electronic paper). FIG. 6 shows an example of internal information display by telephone number operation, and FIG. 7 shows an example of internal information display in the maintenance mode.

In the flowchart of FIG. 6, the main control unit 38 constantly monitors a telephone number operation event (interrupt). Hereinafter, as an example, the main control unit 38 monitors a telephone number operation event (interrupt) acquired through the key input processing unit 39. However, in the present invention, the telephone number operation event is not limited to the case where the key input is performed, and in addition, the telephone number writing / inputting through the serial cable connected to the mobile phone 1 is also possible. A telephone number operation event such as a deletion event or a telephone number operation event such as a telephone number writing / erasing event performed in wireless communication can be included. Specifically, the activation monitoring of the mobile phone 1 is performed by the user's key operation. Here, when a telephone number operation event occurs when the user performs a key operation (step S601), the main control unit 38 checks the telephone number state based on the data transferred via the key input processing unit 39 ( Step S602).
If it is confirmed that the telephone number is not recorded in the memory 40 after the key input operation (S602 “None”), the main control unit 38 activates the casing panel display control unit 45 and assigns the serial number to the casing display panel 80. And the internal information such as the serial number is displayed (step S603), and if it is confirmed that the telephone number is recorded in the memory 40 (step S602 “Yes”), the internal information displayed on the casing display panel 80 is erased. (Step S604).

  That is, the display / non-display of the internal information on the casing display panel 80 (electronic paper) can be switched and controlled depending on whether or not the telephone number of the mobile phone 1 is recorded, and the electronic paper is erased or displayed once displayed. Since the display content is displayed without power supply unless the content is updated, a management sticker on which internal information is printed can be substituted. Therefore, it is possible to prevent an error in sticking the seal printed with the internal information.

On the other hand, in the flowchart of FIG. 7, the main control unit 38 constantly monitors interrupts from the serial communication unit 46. For example, when a PC is connected to the serial port of the mobile phone 1 brought into the store by a cable and a command is input from the PC, the command is taken in via the serial communication unit 46 of the mobile phone 1, and the main control unit 38. To be supplied.
The main control unit 38 recognizes that a maintenance mode event has occurred by receiving a command from the outside (step S701), and checks its state (step S702). That is, when transitioning to the maintenance mode (step S702 “maintenance mode ON”), the main control unit 38 reads internal information such as a manufacturing number and a serial number from a predetermined area of the memory 40, and sends it to the casing panel display control unit 45. Forward. The casing panel display control unit 45 displays the internal information on the casing display panel 80 (step S703). The maintenance mode may include a process for updating software built in the mobile phone 1.

When the cable is disconnected from the serial port and the connection with the PC is disconnected, the main control unit 38 recognizes that the maintenance mode has shifted to another mode (normal operation mode) (step S702 “maintenance mode OFF”). "), The internal information displayed on the casing display panel 80 by the casing panel display control unit 45 is erased (step S704).
That is, the main control unit 38 can control to switch between display and non-display of the internal information on the casing display panel 80 (electronic paper) by monitoring whether or not the mode has been changed to the maintenance mode. Since the internal information can be confirmed only by confirming the display on the casing display panel 80, the trouble of reading the internal information at a store or the like can be omitted.

According to the above-described embodiment, the transition to the maintenance mode is detected when a command is input from the PC due to the connection of the cable, but in addition, when a specific key input is detected. And so on.
Further, the mounting location of the casing display panel 80 is the back surface of the transmitter case 3 in the above-described embodiment, but the mounting location is not particularly limited, and is applicable to all mounting locations. Is possible. In addition, if it is used only for the purpose of displaying internal information, it is necessary to make the electronic paper displayed with the same background color as the casing of the mobile phone 1 inconspicuous.

  As described above, once the electronic paper is displayed, the displayed content is continuously displayed unless it is deleted or the displayed content is updated. The internal information can be easily confirmed. In addition, since no power is required during that time, power saving can be realized. Therefore, it is not necessary to attach a management sticker as in the past, and it is possible to prevent a management sticking operation error, and an operation for reading internal information is not required, and the appearance of the electronic device is not impaired. . In the case where the internal information display is not performed, the electronic paper can be used as a normal display device as well as the main display unit 13 and the sub display unit 14, and thus the usability is improved.

  According to the embodiment of the present invention described above, the internal information read from the memory 40 by the main control unit 38 is transferred to the casing panel display control unit 45, and the casing panel display control unit 45 transfers the casing display panel 80. The main control unit 38 is configured to display the internal information by driving the main control unit 38 and the casing panel display control unit 45 via a bus (not shown). Only the display control command is issued to the casing panel display control unit 45, and thereafter, the casing panel display control unit 45 reads the internal information from the memory 40 and transfers it to the casing display panel 80 to drive the casing display panel 80. You may control. In this case, since the main control unit 38 is released from the display data transfer process, the throughput is improved.

  In the above-described embodiment of the present invention, the circuit board 30 includes the casing panel display control unit 45. However, when the casing display panel 80 includes the display memory and the display driver, the casing panel is displayed. The display control unit 45 becomes unnecessary, and the main control unit 38 can directly control the casing display panel 80.

  According to the above-described embodiment of the present invention, an image is displayed, and the image is continuously displayed until the displayed image is erased or overwritten, and the power for continuing to display the image is displayed. The electronic paper is illustrated as an unnecessary display means. However, the present invention is not limited to the electronic paper, but the content can be rewritten like the electronic paper, and can be replaced if it is a device that does not require power to maintain the display. .

  Further, although only the cellular phone 1 is illustrated as an electronic device, the present invention is not limited to the cellular phone 1 and can be similarly applied to PDAs (Personal Digital Assistants), game machines, and the like. In addition, the functions of the constituent blocks of the electronic device of the present invention may be realized entirely by hardware, or at least a part thereof may be realized by software. For example, the processing in the main control unit 38 and the data processing in the video decoding unit 36 and the audio processing unit 37 may be realized on a computer by one or a plurality of programs, and at least a part thereof is realized by hardware. May be.

It is the front view which showed the external appearance of the electronic device which concerns on embodiment of this invention in the open state. BRIEF DESCRIPTION OF THE DRAWINGS The perspective which shows the external appearance of the electronic device in connection with embodiment of this invention in an open state is a perspective view near side. It is the front view and back view which show the external appearance of the electronic device concerning embodiment of this invention in a closed state. It is a block diagram which shows an example of a structure of the signal processing system of the electronic device concerning embodiment of this invention. It is a figure which shows the cross-sectional structure of the casing display panel used with the electronic device concerning embodiment of this invention. It is a flowchart which shows the internal information display operation | movement at the time of telephone number operation of the electronic device which concerns on embodiment of this invention. It is a flowchart which shows the internal information display operation | movement at the time of the maintenance mode of the electronic device which concerns on embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Mobile phone, 2 ... Reception housing | casing, 3 ... Transmission housing | casing, 38 ... Main control part, 45 ... Casing panel display control part, 46 ... Serial communication part, 80 ... Casing display panel (electronic paper).

Claims (4)

Display means that displays an image and continues to display the image until the displayed image is erased or overwritten, and does not require power to continue displaying the image; and
Internal information storage means for storing internal information uniquely set in the own device;
Predetermined information storage means for storing predetermined information;
It is determined whether or not the predetermined information is stored in the predetermined information storage means. If it is determined that the predetermined information is not stored in the predetermined information storage means, the predetermined information storage means stores the predetermined information. Control means for displaying the internal information displayed on the display means and erasing the internal information displayed on the display means when it is determined that the predetermined information is stored in the predetermined information storage means When,
An electronic device characterized by comprising: The electronic device according to claim 1, wherein the predetermined information is a telephone number. Display means that displays an image and continues to display the image until the displayed image is erased or overwritten, and does not require power to continue displaying the image; and
Internal information storage means for storing internal information uniquely set for the own device;
Monitors the transition of the operation mode of its own machine, and when it transits to a predetermined maintenance mode, causes the display means to display the internal information stored in the internal information storage means,
Control means for erasing the internal information displayed on the display means when the internal information is displayed on the display means and the operation mode transitions from the predetermined maintenance mode to another mode;
An electronic device characterized by comprising: The control means includes
The electronic apparatus according to claim 3, wherein a process of updating built-in software is executed as the predetermined maintenance mode.

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