JP4986157B2 - Character input device and input character conversion candidate display method - Google Patents

Description

  The present invention relates to a character input device and an input character conversion candidate display method.

  A technique is known for predicting input character conversion candidates that are input in response to an operation when creating an e-mail on a mobile phone or the like, and displaying the predicted conversion candidates together with the input characters as a conversion candidate on a part of the screen. Yes.

For example, when a character is input, conversion candidates are displayed in a predetermined area of the display unit, the user is prompted to select from the conversion candidates displayed in the predetermined display area, and the input character is determined after waiting for user input (selection). A character input device (see, for example, Patent Document 1) has been proposed.
JP 2006-209558 A

  By the way, the conventional mobile phone can be changed to a screen that can be easily recognized by changing the display character to a large character size for users who are difficult to recognize small characters such as elderly people.

Thus, the visibility of displayed characters is improved by increasing the character size, but there is a problem that the amount of information (number of characters) displayed on one screen is reduced.
According to the technique disclosed in Patent Document 1 described above, the number of candidates that can be displayed in the display area of conversion candidates displayed during character input is reduced as compared with a normal character size. In this case, since a target conversion candidate is not displayed without frequent selection operations, a problem relating to usability that it is difficult to select a conversion candidate occurs.

  An object of the present invention is to provide a character input device and an input character conversion candidate display method that are improved in usability and maintenance.

  A character input device according to a first aspect of the present invention includes an operation unit, a display unit having a first display region and a second display region, and an input character input according to an operation on the operation unit. And a control unit that displays a plurality of input character conversion candidates in the second display region of the display unit, and the control unit is displayed in the second display region. A first display mode for displaying the input character conversion candidates in a first character size; and a second display mode in which the input character conversion candidates displayed in the second display area are enlarged from the first character size. The second display mode can be selected with the character size of the display, the display priorities of the plurality of conversion candidates displayed in the second display area in the first display mode, and the second display mode A plurality of conversions displayed in the second display area It made different from the display priority of complement and set.

  In the character input device according to the aspect of the invention, in the second display mode, the control unit may convert the conversion depending on the number of displayable characters in the second display area and the number of characters of the plurality of conversion candidates. You may comprise so that the display priority of a candidate may be set.

  In the character input device of the present invention, the control unit may set the first conversion candidate displayed in the first display mode and the second display mode to be the same.

  In the character input device according to the aspect of the invention, the control unit may be configured based on a difference between the displayable amount in the second display area and the number of characters of the conversion candidate displayed first in the second display mode. You may comprise so that the conversion candidate displayed 2nd may be set.

  In the character input device according to the aspect of the invention, the controller may include a conversion candidate list of the plurality of conversion candidates in the first display mode and a conversion candidate list of the plurality of conversion candidates in the second display mode. And respectively.

  In the character input device of the present invention, the control unit may set the second display area in the second display mode to be wider than the second display area in the first display mode. Good.

  According to a second aspect of the present invention, an input character input in response to an operation on the operation unit, the display unit, and the operation unit is displayed in the first display area of the display unit, and conversion candidates for the input character are displayed. A first display mode for displaying a conversion candidate of the input character displayed in the second display area and displayed in the second display area in a first character size; and the input displayed in the second display area. A control unit capable of selecting a second display mode for displaying a character conversion candidate in a second character size enlarged from the first character size; The method includes: a first step of capturing an input character in response to an operation on the operation unit; a second step of generating a plurality of conversion candidates for the input character; and the plurality of conversion candidates for the input character. Above Display priority of the plurality of conversion candidates displayed in the second display area of the display unit is set to the first display mode and the second display mode. And are set differently.

  According to the present invention, it is possible to provide a character input device and an input character conversion candidate display method that can maintain and improve usability even when input character conversion candidates are displayed in an enlarged character size. it can.

The best mode for carrying out the present invention will be described below with reference to the drawings.
With reference to FIG. 1, the basic structure of a cellular phone 1 as a character input device will be described. FIG. 1 shows an external perspective view in a state where the mobile phone 1 is opened.

  As shown in FIG. 1, the mobile phone 1 includes an operation unit side body 2 and a display unit side body 3 as a housing. The operation unit side body 2 and the display unit side body 3 are connected so as to be openable and closable via a connecting part 4 having a hinge mechanism. Specifically, the upper end portion of the operation unit side body 2 and the lower end portion of the display unit side body 3 are connected via a connecting portion 4. Thereby, the mobile phone 1 is configured to be able to relatively move the operation unit side body 2 and the display unit side body 3 connected via the hinge mechanism. That is, in the mobile phone 1, the operation unit side body 2 and the display unit side body 3 are opened (open state), and the operation unit side body 2 and the display unit side housing 3 are folded ( Closed state). Here, the closed state is a state where both housings are arranged so as to overlap each other, and the open state is a state where both bodies are arranged so as not to overlap each other.

  The outer surface of the operation unit side body 2 includes a front case 2a and a rear case 2b. The operation unit side body 2 includes, on the front case 2a side, an operation key group 12 as an operation unit and a voice input unit 15 as a microphone to which a voice uttered by a user of the mobile phone 1 is input. Configured to be exposed.

  The operation key group 12 includes a function setting operation key 12a for operating various functions such as various settings, a telephone book function, a mail function, and the like, and an input operation key 12b for inputting a telephone number and characters such as mail. And a determination operation key 12c as an operation member for performing determinations in various operations, scrolling in the vertical and horizontal directions, and the like. Each key constituting the operation key group 12 has a predetermined function according to the open / closed state of the operation unit side body 2 and the display unit side body 3, various modes, or the type of the activated application. Assigned (key assignment). Then, when the user presses each key, an operation corresponding to the function assigned to each key is executed.

The voice input unit 15 is disposed on the outer end side opposite to the connection unit 4 side in the longitudinal direction of the operation unit side body 2. That is, the voice input unit 15 is arranged on one outer end side when the mobile phone 1 is in the open state.

  An interface (not shown) for communicating with an external device (for example, a host device) is disposed on one side surface of the operation unit side body 2. A side key to which a predetermined function is assigned and an interface (not shown) through which an external memory is inserted and removed are arranged on the other side surface of the operation unit side body 2. The interface is covered with a cap. Each interface is covered with a cap when not in use.

The outer surface of the display unit side body 3 includes a front panel 3a, a front case 3b, a rear case 3c, and a rear panel 3d. The front case 3b in the display unit side body 3 has a display unit 16 for displaying various information and a receiver for outputting the voice of the other party of the call.
The sound output unit 14 serving as a bar is disposed so as to be exposed. Here, the display unit 16 includes a liquid crystal panel, a drive circuit that drives the liquid crystal panel, and a light source unit such as a backlight that emits light from the back side of the liquid crystal panel.

  FIG. 2 is a block diagram showing a configuration example of a signal processing system of the character input device according to the embodiment of the present invention. Here, the mobile phone 1 is illustrated as a character input device.

  As shown in FIG. 2, the mobile phone 1 includes a communication unit 11, an operation unit 12, an audio processing unit 13, a speaker 14, a microphone 15, a display unit 16, a storage unit 17, and a control unit 18. And is configured.

The communication unit 11 captures a plurality of communication systems, for example, according to a communication protocol such as CDMA2000 1x (hereinafter simply referred to as 1x) or EVDO, and a network-side device including a base station connected to a mobile communication network (not shown) Wireless communication between the two.
EVDO communication is faster than 1x communication, and 1x communication is different from EVDO communication in that it supports voice communication in addition to data communication.

  The operation unit 12 includes keys to which various functions are assigned such as a power key, a call key, a numeric key, a character key, a direction key, a determination key, and a call key, and these keys are operated by the user. If so, a signal corresponding to the operation content is generated and input to the control unit 18 as a user instruction. Here, the operation unit 12 functions as a character input unit at the time of creating the outgoing mail.

The audio processing unit 13 processes an audio signal output from the speaker 14 and an audio signal input from the microphone 15.
That is, the sound processing unit 13 amplifies the sound input from the microphone 15, performs analog / digital conversion, further performs signal processing such as encoding, converts it into digital sound data, and outputs it to the control unit 18. .
The audio processing unit 13 performs signal processing such as decoding, digital / analog conversion, and amplification on the audio data supplied from the control unit 18, converts the audio data into an analog audio signal, and outputs the analog audio signal to the speaker 14.

The display unit 16 is configured using a display device such as a liquid crystal display panel or an organic EL (Electro-Luminescence) panel, for example, and displays an image corresponding to a video signal supplied from the control unit 18.
Specifically, the display unit 16 has a destination telephone number at the time of outgoing call, a telephone number of the called party at the time of incoming call, a pictographic image such as date, time, remaining battery level, in addition to received mail and outgoing mail, The display of a standby image is also included.
The display unit 16 also includes a first display area (hereinafter referred to as an input character display area 161) for displaying input characters corresponding to an operation performed on the operation unit 12 at the time of creating the outgoing mail, and a control unit 18 described later. The area is divided into second display areas (hereinafter referred to as conversion candidate display areas 162) that display conversion candidates generated by conversion of input characters, and each is displayed.

The storage unit 17 stores various data used for processing executed by the control unit 18.
The storage unit 17 includes, for example, an application program executed by the control unit 18, an address book for managing personal information such as a telephone number and an e-mail address of a communication partner, an audio file for reproducing a ring tone and an alarm sound, Holds setting data and temporary data used in the program processing.
The storage unit 17 further stores a conversion dictionary 171 that is referred to when converting an input character, and a conversion priority display priority list that is dynamically updated based on the most recent usage history. Most recently used files) area 172, and display data for two screens of the input character display area 161 and the conversion candidate display area 162 are stored in a VRAM (Video RAM) area 173. The conversion dictionary 171, MRU area 172, and VRAM area 173 described above are shown in FIG. 3.
The above-described storage unit 17 is configured by, for example, a nonvolatile storage device (flash memory), a randomly accessible storage device (SRAM, DRAM), or the like.

The control unit 18 controls the overall operation of the mobile phone. That is, various processes of the cellular phone (control of voice calls performed via the circuit switching network, creation and transmission / reception of e-mail, browsing of the Internet Web (World Wide Web) site, etc.) are performed on the operation unit 12. The operation of each block described above (transmission / reception of signals in the communication unit 11, input / output of audio in the audio processing unit 13, drawing and display of images in the display unit 16, etc.) ) To control.
The control unit 18 includes a computer (microprocessor) that executes processing based on a program (operating system, application program, etc.) stored in the storage unit 17, and performs the above-described processing according to a procedure instructed in this program. Execute. That is, instruction codes are sequentially read from programs such as an operating system and application programs stored in the storage unit 17 to execute processing.

  FIG. 3 is a block diagram showing an example of the configuration of the control unit 18 shown in FIG.

  As shown in FIG. 3, the control unit 18 functionally includes a display mode setting unit 180, an input character acquisition unit 181, a conversion candidate generation unit 182, a conversion candidate search unit 183, and a display priority update. The unit 184 and the display control unit 185 are configured.

The display mode setting unit 180 controls the conversion candidate search unit 183 and the display control unit 185 according to the display mode (enlarged mode / normal mode) designated by the operation on the operation unit 12.
The input character acquisition unit 181 takes in an input character input by the user operating the operation unit 12 and supplies the input character to the conversion candidate generation unit 182.

  The conversion candidate generation unit 182 acquires a plurality of conversion candidates with reference to the conversion dictionary 171 stored in the storage unit 17 based on the input characters captured by the input character acquisition unit 181, and for each acquired conversion candidate The MRU area 172 is referred to and displayed according to the priority order defined in the conversion candidate character display area of the display unit 16 via the display control unit 185.

  In the expansion mode, the conversion candidate search unit 183 displays a predetermined number of characters (for example, the number of characters that can be displayed in one line of the conversion candidate display area 162-first displayed for each of the plurality of conversion candidates generated by the conversion candidate generation unit 182. The conversion candidate having the number of characters satisfying the condition is output to the display priority update unit 184.

The display priority update unit 184 extracts the conversion candidate having the highest priority from the conversion candidates that meet the above conditions, and displays the conversion candidate display area 162 of the display unit 16 for the second and subsequent conversion candidates with respect to the display control unit 185. The conversion candidates to be displayed are sequentially indicated.
That is, the display priority update unit 184 generates a new display priority order of conversion candidates, and here, the display priority list stored in the MRU area 172 of the storage unit 17 is updated. Become.

The display control unit 185 transfers the data displayed in the input character display area (first display area) 161 and the conversion candidate display area (second display area) 162 of the display unit 16 from the VRAM area 173 of the storage unit 17. The data is read out in synchronization with the display timing of the display device constituting the display unit 16 and displayed on the display unit 16.
The display control unit 185 also displays a plurality of conversion candidates generated by the conversion candidate generation unit 182 in the conversion candidate display area 162 of the display unit 16 according to the display priority indicated by the display priority update unit 184.
When the normal mode is designated via the display mode setting unit 180, the display control unit 185 follows the display priority defined in the display priority list stored in the MRU area 172 of the storage unit 17. The conversion candidates are displayed in the conversion candidate display area 162 of the display unit 16.

  FIG. 4 is a flowchart showing the operation of the character input device according to the embodiment of the present invention. Hereinafter, the operation of the character input device according to the embodiment of the present invention shown in FIGS. 2 and 3 will be described in detail with reference to the flowchart shown in FIG.

  Here, the creation of a transmission mail by the mobile phone 1 is considered. First, a user inputs a character by operating a character key assigned to the operation unit 12 (step S301 “Yes”). In response to this, the input character acquisition unit 181 of the control unit 18 converts the input character or input character string into a key code by key scanning or the like (step S302), and supplies it to the conversion candidate generation unit 182. When there is no character input (step S301 “No”), the input character acquisition unit 181 stands by until there is a character input.

The conversion candidate generation unit 182 refers to the conversion dictionary 171 stored in the storage unit 17 based on the captured key code, generates a conversion candidate by, for example, kana-kanji conversion, and supplies the conversion candidate to the display control unit 185 (step S1). S303).
Here, when there are a plurality of conversion candidates, the conversion candidate generation unit 182 further refers to the display priority list stored in the MRU area 172 of the storage unit 17 and is dynamically updated based on the past use history. The conversion candidates are output according to the display priority order.
Here, the conversion candidate that is output with the highest priority and is displayed first (first priority) in the conversion candidate display area 162 of the display unit 16 via the display control unit 185 has been selected in the past or most recently. It is a conversion candidate (step S304).

Here, it is assumed that the user has instructed the enlargement mode as the display mode by operating the operation unit 12.
Here, the enlargement mode is one of the display modes for the input characters, and the input characters displayed on the display unit 16 in accordance with the character input operation are enlarged from the character size of the input characters displayed in the normal mode. This mode is displayed in size. The display mode including the normal mode and the enlargement mode can be set in advance by selecting a mode from various function setting menus. Then, by setting the enlargement mode, the input character display area has a character size that is larger than the character size of the input character displayed when the input mode is set when the input mode is set to the operation unit 12. 161, the visibility can be improved. When the enlargement mode is set, the input character conversion candidate displayed in response to the input operation is also larger than the character size of the input character conversion candidate displayed in the normal mode ( It is displayed in the conversion candidate display area 162 in a size equivalent to the character size of the input character displayed in the input character display area 161 in the enlarged mode.
In addition to changing the character size by selecting the display mode, the character size setting function can be used to change the character size setting by selecting the character size of the input character from the input character size setting menu. Is displayed in the input character display area 161 when the character size (for example, “large”, “maximum”) larger than the standard size (for example, “medium”) is set as the character size of the input character. The input characters to be displayed and the conversion candidates displayed in the conversion candidate display area 162 may be enlarged and displayed. In the following, description will be made including the state in which this enlarged character size is set as the enlarged mode.
In the enlargement mode (step S305 “enlarge”), the display mode setting unit 180 activates the conversion candidate search process by the conversion candidate search unit 183. The conversion candidate search process assumes a case where the number of characters constituting the conversion candidate displayed subsequent to the conversion candidate displayed first is relatively large and the conversion candidate cannot be displayed on one line. In this case, the processing is performed with a view to changing the display priority (priority) of the conversion candidates to be displayed after the second and increasing the displayable number of one page in the conversion candidate display area 162.

For this reason, the conversion candidate search unit 183 calculates the second displayable number of characters C = A−B−1 (where 1 is one space) for each of the plurality of conversion candidates output from the conversion candidate generation unit 182. The conversion candidates are extracted by calculation and output to the display priority update unit 184 (step S306).
Here, A is the number of characters that can be displayed in one line of the conversion candidate display area 162, B is the number of characters of the first priority conversion candidate displayed in the conversion candidate display area 162, and 1 is space 1. It is a character.
In other words, the conversion candidate search unit 183 extracts conversion candidates with the second priority to the conversion priority with the (n−1) th priority (“Yes” in step S307), and prioritizes conversion candidates with the number of characters equal to or less than C. The search is performed in descending order (step S308). If there is a corresponding one, the priority is changed by the display priority update unit 184, and the conversion candidate display area 162 of the display unit 16 is changed via the display control unit 185. Displays the second conversion candidate (step S309).

  Note that if the normal mode (or the reduced mode for reduced display) is specified in the process of step S305, the processes in steps S306 to S308 described above are skipped, and a plurality of conversions generated by the conversion candidate generation unit 182 are performed. The second and subsequent candidates are displayed in the conversion candidate display area 162 of the display unit 16 according to the priority order defined in the display priority list stored in the MRU area 172 of the storage unit 17 by the display control unit 185. .

FIG. 5 shows an example of a display screen configuration generated by the above-described control. FIG. 5A shows a display screen configuration example in the normal mode, and FIG. 5B shows an example of the display screen configuration in the enlarged mode. In both cases, the input character display area is indicated by reference numeral 161 and the conversion candidate display area is indicated by reference numeral 162.
As shown in FIG. 5B, in the enlargement mode, three conversion candidates can be displayed in the conversion candidate display area 162 by changing the display priority order of the conversion candidates. Incidentally, FIGS. 5C and 5D show a display screen configuration example in the normal mode and the enlargement mode in the conventional example, and the priority order in the enlargement mode (FIG. 5D) is shown. Since it is not changed, it can be seen that only up to the second (two) conversion candidates are displayed in the conversion candidate display area 162.

In the character input device according to the embodiment of the present invention described above, it is assumed that the input character display area 161 and the conversion candidate display area 162 have substantially the same capacity (display area) regardless of the set display mode. As described above, for example, as shown in FIGS. 6A and 6B, an example of the screen configuration is shown. In the enlarged mode (FIG. 6B), the conversion candidate display area 162 is compared with that in the normal mode. In this case, since the display area of the conversion candidate display area 162 is expanded, a decrease in the number of displayed characters can be suppressed even if the character size is enlarged.
Expansion of the conversion candidate display area 162 can be realized by two-screen control by the display control unit 185 that has received an enlargement mode instruction from the display mode setting unit 180.

  As described above, according to the character input device according to the embodiment of the present invention, the control unit 18 selects the input character conversion candidates displayed in the second display area (conversion candidate display area 162) of the display unit 16. A first display mode (normal mode) for displaying in the first character size, and a second character size in which the input character conversion candidates displayed in the second display area are displayed in a second character size expanded from the first character size. 2 display modes (enlargement modes) can be selected, the display priority of a plurality of conversion candidates displayed in the second display area in the first display mode, and the second display area in the second display mode. It has a function of setting different display priorities of a plurality of conversion candidates to be displayed.

That is, in the first display mode (normal mode), the control unit 18 uses the conversion candidate generation unit 182 in accordance with the priority order defined in the display priority list stored in the MRU area 172 of the storage unit 17. A plurality of generated conversion candidates are displayed in the conversion candidate display area 162 of the display unit 16, and in the second display mode (enlarged mode), a plurality of conversion candidates are displayed according to the priority order updated by the display priority update unit 184. The conversion candidates are displayed in the conversion candidate display area 162 of the display unit 16.
At this time, the control unit 18 sets the same conversion candidate to be displayed first in the normal mode and the enlarged mode, and the conversion candidate search unit 183 and the display priority update unit 184 display the second and subsequent conversion candidates. The display priority of the conversion candidates to be changed is changed as necessary to increase the displayable number of one page in the conversion candidate display area 162. Specifically, when the enlargement mode is set via the display mode setting unit 180, the conversion candidate search unit 183 displays the number of displayable characters in the conversion candidate display area 162 of the display unit 16 and the conversion candidate displayed first. A difference with the number of characters is obtained, and conversion candidates to be displayed second and later are determined based on the difference in cooperation with the display priority update unit 184.

Thus, according to the character input device of the present invention, when the character size of the conversion candidate of the displayed input character is enlarged, it is possible to suppress a decrease in the number of conversion candidates displayed in the conversion candidate display area 162, Therefore, usability can be maintained and improved even when the character size is increased.
In particular, by limiting the menu display and function settings of the mobile phone or changing the function setting values, the operation mode can be set to a specific mode (for example, “Easy mode” according to the lifestyle of the elderly, children, or users). ”), Etc.), when the input character displayed by switching to this specific mode or the character size of the conversion candidate is switched, the character size increases as described above. If the function is enabled, the effect obtained is great.

The above function is not limited to switching to a mode depending on the user's usage style, but may be executed by mode change or character size change using a submenu during character input.
In addition, when a specific mode corresponding to the usage style of the user is detected, the above function is enabled, and at this time, a dictionary for the specific mode may be held in the storage unit 17 and used.

  In addition, the input character conversion method of the present invention is input in accordance with an operation on the operation unit 12, the display unit 16, and the operation unit 12, for example, as shown in the internal configuration diagram of the mobile phone 1 in FIG. 2. Input characters are displayed in the first display area of the display unit 16, input character conversion candidates are displayed in the second display area, and input character conversion candidates displayed in the second display area are displayed in the first character size. A control unit capable of selecting a first display mode for displaying and a second display mode for displaying input character conversion candidates displayed in the second display area in a second character size expanded from the first character size. 18, a first step of capturing input characters in response to an operation on the operation unit 12, as shown in the flowchart of FIG. 4, for example. S301, 302), a second step (S303) for generating one or more conversion candidates for the input character, a third step (S304 to S309) for displaying a plurality of conversion candidates for the character input in the second display area, The display priority of one or more conversion candidates displayed in the second display area of the display unit 16 is set differently between the first display mode and the second display mode.

  According to the input character conversion method of the present invention described above, the display priority of one or more conversion candidates displayed in the second display area in the first display mode, and the second display area in the second display mode. The conversion candidate displayed in the conversion candidate display area 162 when the character size of the conversion candidate of the input character to be displayed is enlarged by setting the display priority of one or more conversion candidates to be displayed differently Therefore, even if there is a conversion candidate having a relatively large number of characters, the operability can be improved without affecting the display of other conversion candidates.

  In addition, according to the above-described character input device according to the embodiment of the present invention, only the mobile phone 1 is illustrated as the character input device. However, for example, a PDA (Personal Digital Assistants), an electronic notebook, The same applies to a game machine or a notebook PC.

Further, all the functions of the control unit 18 shown in FIG. 3 may be realized by software, or at least a part thereof may be realized by hardware. For example, the display mode setting unit 180, the input character acquisition unit 181, the conversion candidate generation unit 182, the conversion candidate search unit 183, the display priority update unit 184, and the display control unit 185 have one or more data processes. These programs may be realized on a computer, or at least a part thereof may be realized by hardware.
Note that, according to the character input device according to the embodiment of the present invention described above, the input displayed in the conversion candidate display area 162 in the first display mode (normal mode) and the second display mode (enlarged mode). As a configuration for changing the display priority of the character conversion candidates, the second display mode is selected according to the difference between the number of displayable characters in the conversion candidate display area 162 of the display unit 16 and the number of conversion candidate characters displayed first. However, the character input device according to the present invention is not limited to this configuration, and the first candidate is displayed in the second display mode (enlarged mode). Compared to the case where the conversion candidate is displayed according to the same display priority as the display priority of the conversion candidate in the display mode (normal mode) (see FIG. 6D), the conversion candidate is changed in the second display mode (enlarged mode). It may be made so that the display priority of the conversion candidate is changed to display the number of conversion candidates displayed in the candidate display area 162 is increased.

1 is an external perspective view showing an example of a basic structure of a mobile phone according to an embodiment of the present invention. It is a block diagram which shows the structural example of the signal processing system of the character input device which concerns on embodiment of this invention. It is the block diagram which expanded and showed the function of the internal structure of the control part shown in FIG. It is a flowchart which shows the operation example of the character input device which concerns on embodiment of this invention. It is the figure which showed an example of the display screen structure of the character input device which concerns on embodiment of this invention compared with the prior art example. It is a figure which shows the other example of a display screen structure of the character input device which concerns on embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Mobile phone, 2 ... Operation part housing | casing, 2a ... Front case, 2b ... Rear case, 3 ... Display part housing | casing, 3a ... Front panel, 3b ... Front case, 3c ... Rear case, 3d ... Rear panel, 4 ... Connection unit 11 Communication unit 12 Operation unit (operation key group) 12a Function setting operation key 12b Input operation key 12c Determination operation key 13 Audio processing unit 14 Speaker (audio output unit) 15 ... Microphone (speech input unit), 16 ... display unit, 17 ... storage unit, 18 ... control unit, 161 ... input character display region, 162 ... conversion candidate display region, 180 ... display mode setting unit, 181 ... input Character acquisition unit, 182 ... conversion candidate generation unit, 183 ... conversion candidate search unit, 184 ... display priority update unit, 185 ... display control unit.

Claims (7)

An operation unit;
A display unit having a first display area and a second display area;
A control unit that displays input characters input in response to an operation on the operation unit in the first display area of the display unit, and displays a plurality of input character conversion candidates in the second display region of the display unit; With
The controller is
A first display mode for displaying the input character conversion candidates displayed in the second display area in a first character size; and the input character conversion candidates displayed in the second display area as the first character. A second display mode that displays a second character size that is larger than the character size can be selected, and display priorities of a plurality of conversion candidates that are displayed in the second display area in the first display mode; The character input device, wherein the display priorities of the plurality of conversion candidates displayed in the second display area in the second display mode are set differently. The controller is
The display priority of the conversion candidate is set depending on the number of displayable characters in the second display area and the number of characters of the plurality of conversion candidates in the second display mode. The character input device according to 1. The controller is
The character input device according to claim 2, wherein the first conversion candidate displayed in the first display mode and the second display mode is set to be the same. The controller is
In the second display mode, the second conversion candidate to be displayed is set based on the difference between the number of displayable characters in the second display area and the number of first conversion candidate characters to be displayed. The character input device according to claim 3. The controller is
5. The conversion candidate list of the plurality of conversion candidates in the first display mode and the conversion candidate list of the plurality of conversion candidates in the second display mode, respectively. The character input device according to any one of the above. The controller is
6. The second display area in the second display mode is set to be wider than the second display area in the first display mode. 6. Character input device. An operation unit, a display unit, and an input character input in response to an operation on the operation unit are displayed in the first display area of the display unit, and the input character conversion candidates are displayed in a second display area, A first display mode for displaying the input character conversion candidates displayed in the second display area in a first character size; and the input character conversion candidates displayed in the second display area as the first display mode. A control unit capable of selecting a second display mode for displaying in a second character size enlarged from the character size, and a conversion candidate display method for input characters in a character input device comprising:
A first step of capturing input characters in response to an operation on the operation unit;
A second step of generating a plurality of conversion candidates for the input character;
A third step of displaying the plurality of conversion candidates for the input character in the second display area;
The display priority of the plurality of conversion candidates displayed in the second display area of the display unit is set to be different between the first display mode and the second display mode. Character conversion candidate display method.

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