JP2008209802A - Electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide electronic equipment capable of performing appropriate display in accordance with a communication state. <P>SOLUTION: A notebook computer 1 has an antenna 19, a display device 13 having a plurality of pixels 65 which constitute a display screen 13 and displaying an image by applying a voltage to the plurality of pixels 65, and a CPU 31 and a display processing unit 39 controlling the display device 13 to apply voltages to the plurality of pixels 65 in accordance with image data D1. The CPU 31 and the display processing unit 39 calculate an index value indicating influences of noise in communication by the antenna 19, and control the operation of the display device 13 in such a manner that the voltage to be applied to the plurality of pixels 65 in accordance with the image data D1 varies in accordance with the index value. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electronic apparatus that includes a display device and performs communication using an antenna.

Various electronic devices that include an antenna for performing wireless communication and a display device that displays various information are known. In Patent Document 1, a GPS receiver including a GPS antenna and a display device that displays a position obtained by communication using the GPS antenna is disclosed. In Patent Document 1, the display device has two liquid crystal display panels. The antenna is laminated on one liquid crystal display panel. In order to reduce the influence of the display device on the reception sensitivity of the GPS antenna, the GPS receiver of Patent Document 1 is configured to receive one of the two liquid crystal display panels stacked on the antenna during reception of the GPS antenna. Stop displaying on the LCD panel.
JP 2001-27681 A

  However, in the technique of Patent Document 1, since the display is always stopped when communication is performed, various inconveniences occur. For example, in the technique of Patent Document 1, a GPS receiver is targeted, and communication is performed intermittently. However, unlike the technique of Patent Document 1, an electronic device that always communicates over a long period of time, such as an electronic device that communicates wirelessly, does not display at all during communication. Therefore, the convenience for the cost of the display panel cannot be obtained.

  On the other hand, depending on the environment around the electronic device, the distance between the electronic device and the other party, the communication content, etc., it may be possible to perform communication with a necessary and sufficient S / N ratio without stopping the display. .

  The objective of this invention is providing the electronic device which can perform an appropriate display according to a communication state.

  An electronic apparatus according to a first aspect of the present invention includes an antenna, a display device that includes a plurality of pixels that form a display surface, applies a voltage to the plurality of pixels, and performs display according to predetermined image data. A control unit that controls the display device so that a voltage is applied to the plurality of pixels, and the control unit calculates a predetermined index value indicating an influence of noise in communication by the antenna, The operation of the display device is controlled such that a voltage applied to the plurality of pixels according to the image data changes according to the index value.

  Preferably, the electronic device includes an upper housing and a lower housing that are foldably connected from an open state to a closed state, and the lower housing is configured to be placed on a predetermined installation surface, The upper housing is configured to be supported by the lower housing placed on the predetermined installation surface so as to intersect the predetermined installation surface in the open state, and the lower housing The body is provided with an operation unit exposed on a surface facing the upper housing in the closed state, and the display surface is exposed on a surface facing the lower housing in the closed state. The card-type wireless terminal, and a card slot portion into which the surface of the card-type wireless terminal can be inserted in parallel with the display surface, and the antenna is provided in the card-type wireless terminal. Antenna that can transmit and receive radio waves

  An electronic apparatus according to a second aspect of the present invention includes a display device that includes a plurality of pixels that form a display surface and applies a voltage to the plurality of pixels to perform display, and overlaps the display surface. An antenna mounting section to which an antenna can be mounted, and a control section that controls the display device so that a voltage is applied to the plurality of pixels in accordance with predetermined image data. An operation of the display device is performed such that a predetermined index value indicating an influence of noise in communication by an antenna is calculated, and a voltage applied to the plurality of pixels according to the image data changes according to the index value. To control.

  Preferably, the electronic device includes an upper housing and a lower housing that are foldably connected from an open state to a closed state, and the lower housing is configured to be placed on a predetermined installation surface, The upper housing is configured to be supported by the lower housing placed on the predetermined installation surface so as to intersect the predetermined installation surface in the open state, and the lower housing The body is provided with an operation unit exposed on a surface facing the upper housing in the closed state, and the display surface is exposed on a surface facing the lower housing in the closed state. The antenna mounting portion is a card slot portion into which a card-type wireless terminal can be inserted with the surface of the card-type wireless terminal parallel to the display surface.

  Preferably, the control unit changes the luminance of the display surface so that the voltage applied to the pixel is low when the influence of noise indicated by the index value is large.

  An electronic apparatus according to a third aspect of the present invention includes an antenna for performing at least one of transmission and reception of radio waves, a display device for performing display based on image data, and a predetermined noise indicating an influence of noise in communication by the antenna. A control unit that calculates an index value and controls an operation of the display device so that a display based on the image data changes according to the index value.

  Preferably, the control unit performs display based on the image data only within a predetermined display area of the display surface of the display device, and according to the index value, the size, shape, and The operation of the display device is controlled so as to change at least one of the positions.

  Preferably, the control unit controls the operation of the display device so as to reduce the display area when the influence of noise indicated by the index value is large.

  Preferably, the control unit controls the operation of the display device so as to keep the display area away from the antenna when the influence of noise indicated by the index value is large.

  Preferably, the control unit controls the display device to sequentially switch the display area to a plurality of forms having at least one of a size, a shape, and a position different from each other, and the plurality of forms are included in the display area. The index value when applied is calculated for each of the plurality of forms, one form is selected from the plurality of forms based on the index value for each of the plurality of forms, and the selected form is The display device is controlled to be applied to the display area.

  Preferably, the image data is image data of a moving image, and the control unit lowers the frame rate when the influence of noise indicated by the index value is large.

  According to the present invention, appropriate display can be performed according to the communication state.

  FIG. 1 is a perspective view showing an appearance of a notebook computer 1 as an electronic apparatus according to the first embodiment of the present invention. FIG. 1A shows an open state of the notebook computer 1. FIG. 1B shows a closed state of the notebook computer 1. FIG.1 (c) has shown sectional drawing in the Ic-Ic line arrow direction of Fig.1 (a).

  The notebook computer 1 has a lower housing 3 and an upper housing 5 connected to the lower housing 3. Note that the entire casing of the notebook computer 1 includes a lower casing 3 and an upper casing 5.

  The notebook computer 1 is configured to be so-called foldable. In other words, the lower casing 3 and the upper casing 5 are coupled so that their edges are rotatable about the rotation axis R1 along the edges. The notebook computer 1 can be deformed between an open state shown in FIG. 1A and a closed state shown in FIG.

  In the open state, the lower housing 3 and the upper housing 5 cross each other. Then, the lower housing 3 is placed on the installation surface, and the upper housing 5 intersects the installation surface. The upper housing 5 is supported by the lower housing 3. Usually, the ground plane is a substantially horizontal plane. That is, in the open state, the lower housing 3 is disposed in parallel to the horizontal plane, and the upper housing 5 is disposed to intersect the horizontal plane. When the lower housing 3 is placed on the installation surface, the rotation axis R1 is a rotation axis parallel to the installation surface.

  In the closed state, the lower housing 3 and the upper housing 5 overlap each other. The lower housing 3 and the upper housing 5 are configured so that their shapes substantially coincide with each other when viewed in the stacking direction in the closed state.

  For example, an operation unit 7 is provided in the lower housing 3. The operation unit 7 includes a plurality of keys 9 and a touch pad 11 that are exposed on the facing surface 3 a that faces the upper housing 5 in the closed state of the lower housing 3.

  For example, a display device 13 is provided in the upper housing 5. The display device 13 has a display surface 13 a that is exposed at the facing surface 5 a that faces the lower housing 3 when the upper housing 5 is closed. The display surface 13 a has an area that occupies most of the facing surface 5 a of the upper housing 5, for example. For example, the display surface 13a occupies an area of 80% or more, 90% or more, or 95% or more of the area of the facing surface 5a. The shapes of the facing surface 5a and the display surface 13a may be appropriately set, but are rectangular, for example.

  The upper housing 5 is provided with a wireless terminal 15 for performing wireless communication using radio waves. The wireless terminal 15 may be regarded as a part of the notebook computer 1 or may be regarded as an electronic device different from the notebook computer 1 that can be attached to the notebook computer 1.

  The wireless terminal 15 is configured by a so-called card-side wireless terminal, for example. That is, the outer shape of the wireless terminal 15 is card-shaped. More specifically, it is generally a thin rectangular parallelepiped. The upper housing 5 is provided with a slot portion 17 as an antenna mounting portion on the back side of the display device 13 (the side opposite to the facing surface 5a of the upper housing 5). The wireless terminal 15 is inserted into the slot portion 17 so as to be stacked on the display device 13 (FIG. 1C), that is, so that the card surfaces 15a and 15b are parallel to the display surface 13a. It is attached to the body 5.

  The entire wireless terminal 15 may be inserted into the upper housing 5 or a part thereof. In the present embodiment, a case where a part is inserted and the remaining part is exposed from the upper housing 5 is illustrated. A portion inserted into the upper housing 5 is referred to as an insertion portion 15c, and a portion exposed from the upper housing 5 is referred to as an exposed portion 15d. Although the area ratio between the insertion portion 15c and the exposed portion 15d may be set as appropriate, the present embodiment illustrates a case where the exposed portion 15d is smaller than the insertion portion 15c. The area of the insertion portion 15c is smaller than the area of the display surface 13a. For example, the area of the insertion portion 15c is ¼ or less of the area of the display surface 13a.

  The wireless terminal 15 may be insertable in an appropriate direction at an appropriate position with respect to the upper housing 5. However, the influence of the noise received from the lower housing 3 is reduced when it is separated from the lower housing 3. In this embodiment, the case where the slot portion 17 into which the wireless terminal 15 is inserted is provided on the side opposite to the rotation axis R1 of the upper housing 5 is illustrated.

  The wireless terminal 15 has an antenna 19 for performing mutual conversion between radio waves and electrical signals. The antenna 19 is configured by a chip antenna, for example. That is, the outer shape of the antenna 19 is constituted by a relatively small base, and a conductor (antenna element) is disposed inside the base.

  In the case where the antenna 19 is configured by a chip antenna with strong directivity, for example, the antenna 19 has a high sensitivity direction (a direction toward the transmission / reception surface 19a) facing the card surface 15a and / or 15b of the wireless terminal 15. The direction is provided in the wireless terminal 15.

  The radio wave transmitted and received by the antenna 19 includes vertically polarized waves. Vertically polarized waves are radio waves whose electric field is perpendicular to the ground (horizontal plane, reflecting surface). On the other hand, as shown in FIG. 1 (a), in the open state, the antenna 19 has the transmission / reception surface 19a arranged in a state close to vertical. Therefore, the antenna 19 is easy to receive vertically polarized waves in the open state.

  The antenna 19 may be provided in either the insertion portion 15 c or the exposed portion 15 d of the wireless terminal 15. However, the effect of noise from the display device 13 and the like is less when the exposure portion 15d is provided. In this embodiment, the case where the whole antenna 19 is arrange | positioned at the exposed part 15d is illustrated.

  FIG. 2 is a block diagram showing the configuration of the signal processing system of the notebook computer 1.

  In the lower housing 3, for example, a CPU 31, a ROM 33, a RAM 35, and an external storage device 37 are provided. The CPU 31 reads out and executes a program recorded in the ROM 33 and / or the external storage device 37, and performs various calculations (processing). The RAM 35 is used as a working memory by the CPU 31. The various processes executed by the CPU 31 include, for example, a process according to an input from the operation unit 7, a process for controlling the operation of the display device 13, and a process for performing wireless communication via the wireless terminal 15. It is. The external storage device 37 may include a storage medium that can be attached to and detached from the notebook computer 1.

  In the ROM 33 and / or the external storage device 37, image data D1 is stored. The image data D1 may be still image image data or moving image image data, and an appropriate format may be used. The image data D1 displays not only data representing photographs and figures as generated by a scanner or digital camera, but also data for displaying desktop icons, data for displaying window frames, and character information. Any data including information for displaying some information on the display surface 13a, such as data for the display, may be used.

  The CPU 31 reads the image data D1 and outputs a signal corresponding to the image data D1 to the display processing unit 39 described later. The image data D1 may be appropriately generated by the CPU 31 and stored in the RAM 35 or the external storage device 37, or may be received by the wireless terminal 15 and stored in the RAM 35 or the external storage device 37.

  In addition, the lower housing 3 is provided with a display processing unit 39 for controlling the operation of the display device 13. The display processing unit 39 converts a signal based on the image data from the CPU 31 into a predetermined image signal and outputs it to the display device 13. A part or all of the display processing unit 39 may be provided in the upper housing 5.

  The wireless terminal 15 is provided with a communication processing unit 41. The communication processing unit 41 includes a high frequency circuit. The communication processing unit 41 modulates various data processed by the CPU 31 and transmits it through the antenna 19. In addition, the communication processing unit 41 demodulates the signal received via the antenna 19 and outputs the demodulated signal to the CPU 31.

  FIG. 3 is a diagram for explaining the configuration of the display device 13. FIG. 3A is a conceptual diagram showing the entire display device 13. FIG. 3B is an equivalent circuit diagram showing a configuration in the region IIIb of FIG.

  The display device 13 is configured by a liquid crystal display, for example. As shown in FIG. 3A, the display device 13 includes a display panel 51, a source driver 53 and a gate driver 55 for driving the display panel 51, and a power source that supplies power to the source driver 53 and the gate driver 55. Part 57.

  Although not particularly shown, the display panel 51 is configured by sealing liquid crystal between two substrates and laminating a color filter, a common electrode, a display electrode, and the like. In the display panel 51, a plurality of pixels 65 (only some of them are shown) are arranged vertically and horizontally. The plurality of pixels 65 constitute the display surface 13a.

  The source driver 53 and the gate driver 55 are arranged on the outer peripheral side of the display panel 51 (display surface 13a), for example. More specifically, the display panel 51 is disposed on the opposite side to the position where the wireless terminal 15 is inserted. That is, the wireless terminal 15 is arranged on the upper side (the side opposite to the rotation axis R1 of the upper housing 5) and the right side (one side of the rotation axis R1) of the display panel 51 in FIG. On the other hand, the source driver 53 and the gate driver 55 are arranged on the lower side (the rotation axis R1 side of the upper housing 5) and the left side (the other side of the rotation axis R1) of the display panel 51 in FIG.

  The source driver 53 includes, for example, a plurality of source driver ICs 54 </ b> A to 54 </ b> B (hereinafter simply referred to as “source driver IC”, which may not be distinguished from each other). In FIG. 3A, two source driver ICs 54 are illustrated. A plurality of source lines 61 extend from the source driver IC 54 in the left-right direction in FIG. 3 and cross the display panel 51 (only a part is shown). 3A is a conceptual diagram, the interval between the source driver ICs 54 is drawn wide, and there is no description about branching the line from the source driver IC 54 in the display panel 51. FIG. However, the source lines 61 are arranged at equal intervals in the vertical direction of FIG.

  Similarly, the gate driver 55 includes, for example, a plurality of gate driver ICs 56 </ b> A to 56 </ b> D (hereinafter simply referred to as “gate driver IC”, which may not be distinguished from each other). In FIG. 3A, four gate driver ICs 56 are illustrated. A plurality of gate lines 63 extend from the gate driver IC 56 in the vertical direction in FIG. 3 (a direction orthogonal to the source line 61), and vertically cut the display panel 51 (only a part is shown). 3A is a conceptual diagram, the interval between the gate driver ICs 56 is drawn wide, and there is no description about branching the lines from the gate driver ICs 56 in the display panel 51. FIG. However, the gate lines 63 are arranged at equal intervals in the left-right direction of FIG.

  3A and 3B, the source line 61 extends in the longitudinal direction of the display panel 51 (the horizontal direction of the open display surface 13a), and the gate line 63 extends in the short direction of the display panel 51. However, conversely, the gate line 63 may extend in the longitudinal direction of the display panel 51, and the source line 61 may extend in the short direction of the display panel 51.

  The power supply unit 57 converts power supplied from a main power supply unit (not shown) of the notebook computer 1 into appropriate power and supplies it to the source driver 53 and the gate driver 55.

  FIG. 3B shows a pixel 65 of 3 × 3 pixels. In FIG. 3B, the storage capacitor 67 is also illustrated. The plurality of pixels 65 are arranged on the display panel 51 in the row direction (left-right direction in FIGS. 3A and 3B, the longitudinal direction of the display panel 51) and the column direction (FIGS. 3A and 3B). Of the display panel 51 in the vertical direction). Each source line 61 is commonly connected to a plurality of pixels 65 in each row. Each gate line 63 is commonly connected to a plurality of pixels 65 in each column.

  One pixel 65 corresponds to a combination of one source line 61 and one gate line 63. Accordingly, by appropriately applying appropriate voltages to the plurality of source lines 61 and the plurality of gate lines 63, appropriate voltages are selectively applied to the plurality of pixels 65, and the image data D1 is applied. A corresponding display is made in each pixel 65. Then, by sequentially executing the display in each pixel 65, that is, by scanning, a display corresponding to the image data D1 is made on the display surface 13a of the display device 13.

  The source driver 53 and the gate driver 55 apply a voltage corresponding to the image signal from the display processing unit 39 to the plurality of source lines 61 and the plurality of gate lines 63 in the order corresponding to the image signal. A so-called liquid crystal controller is included in the display processing unit 39.

  FIG. 4 is a conceptual diagram illustrating an outline of the operation of the notebook computer 1. FIG. 4 is a view of the upper housing 5 as viewed from the front (a direction facing the lower housing 3 in the closed state).

  As shown in FIG. 4A, when communication is not performed by the wireless terminal 15 or when the communication state is good such as a high SN ratio in communication by the wireless terminal 15, the notebook computer 1 The entire display surface 13a is used as a display area AR (shown by hatching).

  On the other hand, as shown in FIG. 4B, when the communication is performed by the wireless terminal 15 and the communication state is not good such as a low SN ratio in the communication by the wireless terminal 15, the notebook computer 1 displays A part of the entire surface 13a is used as a display area AR (shown by hatching).

  That is, the notebook computer 1 reduces the display area AR. In addition, the notebook computer 1 sets the display area AR so that the reduced display area AR is arranged at a position away from the wireless terminal 15. More preferably, the notebook computer 1 sets the display area AR so that the display area AR does not overlap the wireless terminal 15.

  In general, the aspect ratio (shape) of the display area AR is preferably the same as that of the display surface 13a. However, depending on the content of the image data D1, for example, when the content of the image data D1 is a moving image such as a movie, the aspect ratio of the image to be displayed is different from the aspect ratio of the display surface 13a. If the aspect ratio of the display area AR is the same as the aspect ratio of the image to be displayed, there is no unused area in the display area AR, and the image can be displayed in a large size while reducing the display area AR.

  By setting the display area AR as described above, no voltage is applied to the pixel 65 in the vicinity of the wireless terminal 15 (in the vicinity of the antenna 19), or the fluctuation of the voltage applied to the pixel 65 is reduced. The influence of noise in communication of the wireless terminal 15 caused by the voltage applied to the pixel 65 is reduced. Specifically, it is as follows.

  As shown in FIG. 3A, the display panel 51 is divided into four divided regions DR1 to DR4. Assuming that the divided region DR3 is the display area AR, display can be performed based on the image data D1 in the display area AR if a voltage is applied to the display panel 51 by the source driver IC 54B and the gate driver ICs 56A and 56B.

  Therefore, for example, the display processing unit 39 applies an image based on the image data D1 to the source driver 53 and the gate driver 55 so as not to apply a voltage to the display panel 51 by the source driver IC 54A and the gate driver ICs 56C and 56D. A signal (control signal) is output. In this case, in the divided region DR2 overlapping with the wireless terminal 15, no voltage is applied to the pixel 65, and the voltage does not vary. Therefore, the influence of the voltage fluctuation on the display surface 13a on the wireless terminal 15 is reduced.

  Further, for example, the display processing unit 39 displays a color and brightness that are constant in space and time regardless of the content of the image data D1 in the divided regions DR1, DR2, and DR4. In this case, a voltage fluctuation occurs in the divided region DR2 overlapping with the wireless terminal 15 along with the scanning. However, as in the case where a still image based on the image data D1 is displayed, a voltage variation occurs spatially, or in the case where a moving image based on the image data D1 is displayed, spatial and temporal. As compared with the case where voltage is electrically driven, the fluctuation of the voltage is regular. That is, noise caused by voltage fluctuations in the divided region DR2 can be detected and removed as a steady noise component. Therefore, it becomes easy to remove noise caused by voltage fluctuation on the display surface 13a by various processes. Further, as in a second embodiment to be described later, if a display that is spatially and temporally constant in the divided regions DR1, DR2, and DR4 is set to a luminance at which the voltage applied to the pixel 65 is lowered, scanning is performed. Even if voltage fluctuation occurs, the fluctuation width of the voltage is small and the influence of noise is reduced.

  In the above example, the case where the boundary lines of the divided regions DR1 to DR4 are located between the source driver ICs 54 and between the gate driver ICs 56 has been described. However, the boundary lines of the divided regions DR1 to DR4 are each source driver IC. It may be located between the source lines 61 of the IC 54 and between the gate lines 63 of the gate driver ICs 56.

  A voltage corresponding to the image data D1 is applied to the pixels 65 in the display area AR. For example, if the image data D1 is image data having a predetermined size, the image data D1 is displayed enlarged or reduced so that the overall size matches the size of the display area AR. Alternatively, when the predetermined size is larger than the display area AR, a part of the image having the same area as the display area AR is displayed, and if the predetermined size is smaller than the display area AR, the image The whole is displayed at an appropriate position in the display area AR. Further, for example, if the image data D1 is data that places a desktop icon or the like along the outer periphery of the display surface 13a, the desktop icon or the like is displayed along the outer periphery of the display area AR.

  FIG. 5 is a flowchart illustrating a procedure of pre-data transfer processing executed by the CPU 31 in order to change at least one of the size, shape, and position of the display area AR according to the communication state. Note that part of the processing in FIG. 5 may be performed by the display processing unit 39.

  The processing in FIG. 5 is executed when an opportunity for communication via the wireless terminal 15 occurs in the notebook computer 1. For example, the processing of FIG. 5 is executed in the notebook personal computer 1 when sending and / or receiving mail, browsing a home page, uploading and / or downloading data to a server connected via a wireless LAN, and the like. The

  While the process of FIG. 5 is being executed, the display area AR contains the image data D1 regardless of the communication that triggered the process of FIG. 5 or by the execution of an application related to the communication. An image based on it is displayed.

  In step S1, the CPU 31 performs display control using the entire display surface 13a as the display area AR, and obtains an index value indicating the influence of noise in communication by the antenna 19 at that time.

  The index value is, for example, an SN ratio, RSSI, or FER. One type of index value may be acquired, or a plurality of types of index values may be acquired. In addition, the index value is acquired, for example, in a communication different from the communication that triggers the execution of the process of FIG. The other communication is, for example, communication with a small amount of data compared to communication that is always performed or communication that is triggered for obtaining an index value.

  It should be noted that the entire display surface 13a is set as the display area AR before the opportunity to execute the communication that triggered the processing of FIG. 5 is performed, and based on the communication that is always performed. When the index value is always acquired, step S1 may be omitted.

  In step S2, the CPU 31 switches the display area AR to a plurality of forms different from each other in at least one of size, shape, and position, and acquires an index value for each of the plurality of forms as in step S1. . Note that the size, shape, and position of the plurality of forms and the number of the plurality of forms may be set in advance by the user or manufacturer, or may be set by appropriately calculating by the CPU 31. .

  In FIG.4 (b), 1st form PT1, 2nd form PT2, and 3rd form PT3 are shown as an example of a some form. For example, the first form PT1, the second form PT2, and the third form PT3 have the same aspect ratio. Moreover, the aspect ratio corresponds to the aspect ratio of the display surface 13a, for example. The wireless terminal 15 is arranged on one corner side (upper right in FIG. 4) of the display surface 13a, whereas the first form PT1, the second form PT2, and the third form PT3 have the one corner. It is arrange | positioned at the corner | angular part side which opposes a part. That is, the wireless terminal 15 and the first form PT1, the second form PT2, and the third form PT3 are arranged on both sides on the diagonal line of the display surface 13a. And as it becomes 1st form PT1, 2nd form PT2, and 3rd form PT3, an area becomes small gradually. Further, as the area gradually decreases, each form moves away from the wireless terminal 15. In addition, in FIG.4 (b), although 3 was illustrated as the number of forms, the number may be set suitably.

  In step S3 of FIG. 5, based on the index values acquired in steps S1 and S2, one form is selected from the form in which the entire display surface 13a is set as the display area AR and the plurality of forms tried in step S2. Select.

  Here, for example, simply selecting a form with the least influence of noise indicated by the index value selects a form with the smallest display area AR. Therefore, for example, a predetermined threshold value is set, the index value is compared with the threshold value, and the display area having the largest area among the forms in which the influence of noise indicated by the index value is smaller than the influence of noise indicated by the threshold value Select AR. However, when there is no form in which the influence of the noise indicated by the index value is smaller than the influence of the noise indicated by the threshold value, the form having the smallest influence of the noise indicated by the index value is selected.

  For example, for each form of the display area AR, an evaluation value indicating visibility is set in advance by the user or manufacturer or by the CPU 31. Then, the index value indicating the influence of noise and the evaluation value indicating the visibility are respectively weighted and added (evaluation is performed when the index value decreases and the visibility increases when the influence of noise increases). If the index value and the evaluation value increase in opposite directions, such as when the value increases, subtract if the increase direction is the same, etc., and calculate a judgment parameter that comprehensively determines the effects of noise and visibility To do. Then, the mode having the highest determination parameter is selected.

  In addition, when a plurality of types of index values are acquired in steps S1 and S2, index values that comprehensively indicate the influence of noise by appropriately weighting and adding each type of index value. And the index value may be used. The same applies when multiple types of evaluation values are set or calculated.

  In step S4, the CPU 31 controls the display device 13 via the display processing unit 39 so as to switch the display area AR to the form selected in step S3. Then, the index value is acquired again.

  In step S5, it is confirmed whether the index value acquired in step S4 satisfies a certain condition. Such confirmation is made for the following reason, for example.

  For example, the modulation class of communication may be changed according to the index value. In some cases, the modulation class is different when the index value is acquired in steps S1 and S2 and when the communication is performed thereafter. Different modulation classes have different effects of noise on communication. Therefore, even if a mode in which an index value that satisfies a certain condition is acquired in step S3 is selected, the index value does not always satisfy the certain condition even in subsequent communication in which the modulation class is changed.

  Further, for example, there is a time difference between the time when the index value is acquired by switching the display area AR to a plurality of forms in step S2 and the time when the execution of step S3 is completed. Therefore, when the notebook computer 1 is moving, the environment related to communication changes between the time when the index value is acquired in step S2 and the time when the step S3 ends.

  Further, for example, while the display area AR is switched in step S2, it is desirable that the voltage fluctuations in the display area AR be the same between the respective forms. For example, even during the execution of step S2, the image is displayed. When a moving image based on the data D1 is reproduced in the display area AR, voltage fluctuations in the display area AR are different from each other, and the influence of noise is accidentally reduced, or There is a possibility that the index value was acquired in the situation where it became large.

  Therefore, in step S5, it is determined whether or not the index value obtained in step S4 satisfies a certain condition. If it is determined that the index value is not satisfied, the process returns to immediately before step S2 (or immediately before step S1). Redo form selection. If it is determined in step S5 that the index value obtained in step S4 satisfies a certain condition, the process proceeds to step S6.

  The determination as to whether or not a certain condition is satisfied is, for example, whether or not the influence of noise indicated by the index value is smaller than the influence of noise indicated by the threshold value by comparing the index value with a predetermined threshold value. It is a judgment of. The determination process in step S5 may be the same as or different from part or all of the determination process performed in step S3.

  In step S6, communication that triggers the processing of FIG. 5 is started. The display area AR at this time is the display area AR in the form set in step S4.

  FIG. 6 is a flowchart showing a procedure of processing executed by the CPU 31 during communication (after step S6).

  When communication takes a long time, the influence of noise in communication by the antenna 19 changes during communication. For example, when the notebook computer 1 is moving, the environment around the notebook computer 1 changes. In addition, for example, when an application for displaying an image on the display device 13 is switched, such as when an application for reproducing a moving image is started during communication, the voltage fluctuation in the display device 13 changes. Therefore, as shown below, the influence of noise is periodically checked, and the display area AR is switched.

  In step S11, an index value is periodically acquired. The index value is an index value in communication that triggers the processing of FIGS. 5 and 6. However, index values in other communications may be acquired. The time interval for acquiring the index value may be set as appropriate.

  In step S12, it is determined whether or not the index value acquired in step S11 satisfies a certain condition. The step S11 may be the same as or different from the step S5 in FIG.

  If it is determined in step S12 that the acquired index value satisfies a certain condition, the CPU 31 returns to step S11. As a result, as long as the acquired index value satisfies a certain condition, display in the display area AR in the form selected by the processing of FIG. 5 or the display area AR in the form selected in steps S13 to S15 described later is continued. Is done.

  If it is determined in step S12 that the acquired index value does not satisfy a certain condition, the CPU 31 executes steps S13 to S15 and newly selects a form of the display area AR. Steps S13 to S15 are the same processes as steps S2 to S4 in FIG. However, the index value may be an index value in communication that triggers the processing of FIGS. 5 and 6, or may be an index value in other communication.

  When the communication that is the trigger of FIGS. 5 and 6 is terminated, for example, the display area AR is switched to a form in which the entire display surface 13a is the display area AR.

  FIG. 6 illustrates the case where the display area AR is reduced when the influence of noise indicated by the index value becomes larger than a certain reference during communication, but is indicated by the index value during communication. When the influence of noise becomes smaller than a certain reference, processing for increasing the display area AR may be performed.

  According to the above embodiment, the CPU 31 and the display processing unit 39 calculate an index value indicating the influence of noise in communication by the antenna 19, and even if the same image data D1 is obtained according to the calculated index value. Since the operation of the display device 13 is controlled so that the voltage applied to the plurality of pixels 65 changes, the voltage fluctuation on the display surface 13a can be appropriately controlled within a necessary and sufficient range. That is, at least one of the size, shape, and position of the display area AR can be changed so as to reduce the influence of noise on communication within a necessary and sufficient range.

  As a result, the feasibility of attaching the wireless terminal 15 to the upper housing 5 provided with the display device 13 is enhanced. Here, in the open state, the notebook computer 1 is used so that the upper housing 5 (display surface 13a) intersects the horizontal plane, and the wireless terminal 15 is inserted into the upper housing 5 in parallel to the display surface 13a. Card type wireless terminal. The wireless terminal 15 is provided with an antenna 19 composed of a chip antenna having a transmission / reception surface facing in the same direction as the card surfaces 15a and / or 15b. Accordingly, the wireless terminal 15 (antenna 19) is easily provided with the vertically polarized wave by being provided in the upper casing 5 in which the display device 13 is provided. Furthermore, since the chip antenna is embedded in the card type wireless terminal, the wireless terminal 15 can be reduced in size and cost.

  In the above embodiment, the notebook computer 1 is an example of the electronic device of the present invention, and the combination of the CPU 31 and the display processing unit 39 is an example of the control unit of the present invention.

  The notebook computer of the second embodiment of the present invention has the same configuration as the notebook computer 1 of the first embodiment. That is, it has the structure shown in FIGS. However, the operation of the notebook computer of the second embodiment is different from that of the first embodiment.

  FIG. 7 is a conceptual diagram showing luminance selection data D3 held in the external storage device 37 (or ROM 33) in the notebook personal computer of the second embodiment.

  The brightness selection data D3 holds an index value indicating the influence of noise in communication by the wireless terminal 15 and a brightness value of the display device 13 in association with each other. Specifically, the index value and the brightness are associated with each other so that the greater the influence of noise indicated by the index value, the lower the voltage applied to the pixel 65 for display.

  FIG. 7 illustrates a case where the index value increases as the influence of noise increases. FIG. 7 illustrates a case where the luminance increases as the voltage applied to the pixel 65 increases (in the case of a normally black liquid crystal display). Therefore, the index value and the brightness are associated with each other so that the brightness decreases as the index value increases. In the following description, it is assumed that the display device 13 is a normally black liquid crystal display.

  The luminance held in the luminance selection data D3 indicates, for example, the upper limit value of the luminance of each pixel on the display surface 13a. That is, the CPU 31 and the display processing unit 39 display the display device so that the luminance of each pixel 65 does not exceed the maximum luminance when any of the luminance held in the luminance selection data D3 is set as the maximum luminance. 13 operations are controlled. For example, the CPU 31 and the display processing unit 39 change the content of the image data D <b> 1 so that the brightness of the entire image is lowered, and output it to the display device 13. In addition, for example, the CPU 31 and the display processing unit 39 change the luminance of the pixel that does not exceed the maximum luminance to the maximum luminance while keeping the luminance of the pixel that does not exceed the maximum luminance as the content of the image data D1, and Output.

  FIG. 8 is a flowchart illustrating a procedure of processing during communication executed by the CPU 31 in the second embodiment. This process is executed while communication by the wireless terminal 15 is performed. Part of the processing of FIG. 8 may be executed by the display processing unit 39.

  Note that while the processing of FIG. 8 is being performed, the display device 13 displays the entire display surface 13a as the display area AR, for example.

  In step S21, the CPU 31 periodically acquires an index value. In step S22, the CPU 31 specifies the luminance corresponding to the acquired index value with reference to the luminance selection data D3. In step S23, the specified luminance is set to the maximum luminance, and the display device 13 is displayed.

  In the above description, the display device 13 is described as a normally black liquid crystal display. Conversely, when the display device 13 is a normally white liquid crystal display, for example, in the luminance selection data D3. The index value and the luminance are associated with each other so that the luminance increases as the noise indicated by the index value increases. In step S23, the luminance specified in step S22 is set as the minimum luminance.

  According to the above embodiment, the same effect as the first embodiment can be obtained. That is, the CPU 31 and the display processing unit 39 control the operation of the display device 13 so that the luminance changes even for the same image data D1 according to the calculated index value. Accordingly, the operation of the display device 13 is controlled so that the voltages applied to the plurality of pixels 65 change. Then, as the influence of noise increases, the brightness is adjusted so that the applied voltage becomes lower, so that the period of voltage fluctuation and the influence range (display area AR) itself do not change, but the width of voltage fluctuation becomes smaller. As a result, the influence of the display device 13 on the wireless terminal 15 is reduced within a necessary and sufficient range.

  The notebook computer of the third embodiment of the present invention has the same configuration as the notebook computer 1 of the first embodiment. That is, it has the structure shown in FIGS. However, the notebook computer of the third embodiment differs in operation from the first embodiment.

  FIG. 9 is a conceptual diagram for explaining the operation of the third embodiment.

  When the image data D1 is moving image data, the data has various kinds of information so that the screen can be rewritten at a predetermined frame rate. For example, it includes information for designating a frame rate and information on an image displayed for each frame when the screen is updated at the frame rate. However, the frame rate is specified as a standard to be displayed with respect to the format of the image data, and information on the frame rate may be held in the moving image reproduction software for each image format. That is, the frame rate information may not be held in the image data D1.

  FIG. 9 illustrates a case where images 100 of a plurality of frames (6 frames are illustrated in FIG. 9) are sequentially displayed at time T when the screen is displayed at a specified frame rate. Information about the image 100 is held in the image data D1. In general, the images 100 are different from each other.

  When the influence of noise in communication by the wireless terminal 15 is small, the CPU 31 and the display processing unit 39 display all the images 100 at a frame rate specified in the image data D1, moving image reproduction software, or the like. However, the CPU 31 and the display processing unit 39 display the image 100 at a frame rate lower than the designated frame rate when the influence of noise in communication by the wireless terminal 15 is large.

  At this time, all the images 100 may be displayed, or a predetermined number of images 100 are thinned out and displayed so that only the images 100 shown hatched in FIG. 9 are displayed. May be. That is, the display speed may appear to be slower than the standard, or the display speed may be the same as the standard, but the motion of the moving image may appear intermittently.

  The procedure for lowering the frame rate may be performed in the same manner as in the second embodiment described above, for example. That is, data in which an index value indicating the influence of noise and a frame rate are associated in advance so that the frame rate decreases as the influence of noise indicated by the index value increases. Similar to the processing of FIG. 8, the index value is periodically calculated, the frame rate corresponding to the calculated index value is specified from the prepared data, and the moving image is displayed at the specified frame rate.

  According to the above embodiment, the same effect as the first and second embodiments can be obtained. That is, generally, the images 100 displayed in each frame are different from each other, and the voltage applied to each pixel 65 is different from frame to frame. Therefore, if the frame rate is high, different voltages are applied to each pixel 65 at a higher frequency, and the voltage variation is severe. Even when the frame rate is low, voltage fluctuations occur on the display surface 13a due to scanning while the image 100 of each frame is displayed. However, voltage fluctuations caused by scanning while displaying the same image 100 are regular in time. That is, the noise is steady between frames. Therefore, noise removal becomes easy.

  For example, the notebook computer holds in advance data of a predetermined reference signal that is transmitted from a transmission / reception partner and is to be received by the notebook computer. When the image displayed on the display surface 13a is updated to one image 100, the reference signal is received from the transmission / reception partner, and the actually received reference signal is compared with the reference signal held in advance. Then, the noise included in the actually received reference signal is specified. Then, the identified noise is removed from the received signal received while the one image 100 is displayed. As a result, it is possible to specify noise due to the display of one image 100 as a stationary component of noise in one frame and remove the noise from the received signal in that one frame.

  The present invention is not limited to the above embodiment, and may be implemented in various aspects.

  The electronic device is not limited to a notebook computer. Any electronic device that has a display device and an antenna or can be attached to the display device and / or the antenna may be used. For example, the electronic device may be a mobile phone, a PDA, a digital camera, a game machine, a printer, or a desktop computer. Further, the electronic device is not limited to one in which a casing is connected so as to be foldable, and may be configured by, for example, one casing.

  The antenna is not limited to a chip antenna. For example, a whip antenna or an antenna printed on a substrate may be used. The antenna mounting portion is not limited to a slot portion for inserting a card type wireless terminal having an antenna. For example, a hole for inserting a pole antenna may be used. The antenna is not limited to transmitting and receiving vertical polarization, and may transmit and receive horizontal polarization. The antenna only needs to perform at least one of transmission and reception.

  The display device is not limited to a liquid crystal display. For example, an organic EL display may be used. Even in an organic EL display, a voltage applied to a line extending vertically and horizontally on a display panel (display surface) is controlled, and a voltage is selectively applied to a plurality of pixels constituting the display surface to perform display. Since this is the same as the liquid crystal display, similarly to the above-described embodiment, it is possible to suppress the fluctuation of the voltage applied to the plurality of pixels and reduce the influence of the display device on the antenna.

  In order to change the voltage variation due to the change in the display area, at least one of the size, the shape, and the position may be changed. For example, when the electronic device has a configuration in which an antenna can be attached at an appropriate position with respect to the display device, in other words, when the control unit cannot uniquely identify the positional relationship between the display device and the antenna, the electronic device In the state where the size and shape of the display area are fixed, only the position of the display area may be changed between a plurality of patterns, and the position of the display area with the smallest noise may be specified.

  In the embodiment, the voltage applied to the pixels according to the same image data is exemplified by changing the display area, changing the luminance, and changing the frame rate. However, these are combined with each other. May be implemented.

  In the embodiment, as a method of changing according to the index value, a method based on a threshold value, a method of combining the index value and other parameters (evaluation values indicating visibility of display), and a change target (display area, brightness) , A method of trying a plurality of frame rates), a method based on data in which an index value is associated with a change target, and the like have been exemplified, but these may be used in appropriate combinations.

  Further, the change of the voltage applied to the pixel based on the index value may be performed at the time of transmission, may be performed at the time of reception, or may be performed at the time of transmission / reception. Before execution of predetermined communication, the voltage may be changed based on an index value in communication different from the communication.

The figure which shows the outline of the notebook personal computer of the 1st Embodiment of this invention. The block diagram which shows the structure of the signal processing system of the notebook personal computer of FIG. The conceptual diagram explaining the structure of the display apparatus of the notebook personal computer of FIG. The figure explaining operation | movement of the notebook computer of FIG. The flowchart which shows the procedure of the process which the notebook personal computer of FIG. 1 performs before communication. The flowchart which shows the procedure of the process which the notebook personal computer of FIG. 1 performs during communication. The conceptual diagram which shows the data which the notebook personal computer of the 2nd Embodiment of this invention hold | maintains. The flowchart which shows the procedure of the process in communication which the notebook personal computer of the 2nd Embodiment of this invention performs. The conceptual diagram explaining operation | movement of the notebook personal computer of the 3rd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Notebook computer (electronic device), 19 ... Antenna, 13 ... Display apparatus, 13a ... Display surface, 65 ... Pixel, D1 ... Image data, 31 ... CPU (control part), 39 ... Display processing part (control part).

Claims (11)

An antenna,
A display device having a plurality of pixels constituting a display surface, and performing display by applying a voltage to the plurality of pixels;
A control unit that controls the display device such that a voltage is applied to the plurality of pixels according to predetermined image data;
Have
The control unit calculates a predetermined index value indicating an influence of noise in communication by the antenna, and a voltage applied to the plurality of pixels according to the image data changes according to the index value. Electronic equipment for controlling the operation of the display device. The electronic device has an upper housing and a lower housing that are foldably connected from an open state to a closed state,
The lower housing is configured to be mountable on a predetermined installation surface,
The upper housing is configured to be supported by the lower housing placed on the predetermined installation surface so as to intersect the predetermined installation surface in the open state,
The lower housing is provided with an operation portion exposed on a surface facing the upper housing in the closed state,
In the upper housing,
The display device in which the display surface is exposed on a surface facing the lower housing in the closed state;
A card-type wireless terminal, a card slot portion that can be inserted with the surface of the card-type wireless terminal parallel to the display surface; and
Is provided,
The electronic device according to claim 1, wherein the antenna is an antenna that is provided in the card-type wireless terminal and can transmit and receive radio waves. A display device having a plurality of pixels constituting a display surface, and performing display by applying a voltage to the plurality of pixels;
An antenna mounting portion provided so as to overlap the display surface and capable of mounting an antenna;
A control unit that controls the display device such that a voltage is applied to the plurality of pixels according to predetermined image data;
Have
The control unit calculates a predetermined index value indicating an influence of noise in communication by the antenna, and a voltage applied to the plurality of pixels according to the image data changes according to the index value. Electronic equipment for controlling the operation of the display device. The electronic device has an upper housing and a lower housing that are foldably connected from an open state to a closed state,
The lower housing is configured to be mountable on a predetermined installation surface,
The upper housing is configured to be supported by the lower housing placed on the predetermined installation surface so as to intersect the predetermined installation surface in the open state,
The lower housing is provided with an operation portion exposed on a surface facing the upper housing in the closed state,
The upper housing is provided with the display device in which the display surface is exposed on a surface facing the lower housing in the closed state,
The electronic device according to claim 3, wherein the antenna attachment portion is a card slot portion into which a card type wireless terminal can be inserted with a surface of the card type wireless terminal parallel to the display surface. The said control part changes the brightness | luminance of the said display surface so that the voltage applied to the said pixel may become low, when the influence of the noise shown by the said index value is large. The electronic device as described in. An antenna for transmitting and / or receiving radio waves;
A display device for performing display based on image data;
A control unit that controls the operation of the display device so as to calculate a predetermined index value indicating an influence of noise in communication by the antenna, and to change a display based on the image data according to the index value;
Electronic equipment having The control unit performs display based on the image data only within a predetermined display area of the display surface of the display device, and at least any of the size, shape, and position of the display area according to the index value The electronic apparatus according to claim 6, wherein an operation of the display device is controlled so as to change the one. The electronic device according to claim 7, wherein the control unit controls the operation of the display device to reduce the display area when the influence of noise indicated by the index value is large. The electronic device according to claim 7, wherein the control unit controls the operation of the display device so that the display area is moved away from the antenna when the influence of noise indicated by the index value is large. The controller is
Controlling the display device so as to sequentially switch the display area to a plurality of forms different from each other in at least one of size, shape and position;
Calculating the index value for each of the plurality of forms when the plurality of forms are applied to the display area;
From the plurality of forms, one form is selected based on the index value for each of the plurality of forms,
The electronic apparatus according to claim 7, wherein the display device is controlled to apply the selected form to the display area. The image data is image data of a moving image,
The electronic device according to any one of claims 6 to 10, wherein the control unit lowers a frame rate when an influence of noise indicated by the index value is large.

Images