JP2004228724A - Portable receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable receiver capable of enabling a user to recognize receptible channels without disturbing viewing operations. <P>SOLUTION: A CPU discriminates channels which a broadcast reception section can receive according to broadcast reception programs and applies lighting control to key buttons 6 corresponding to the receptible channels. Since the user can recognize the receptible channels at a glance by referencing the lighting state of the key buttons 6, the mobile receiver enables the user to simply recognize the receptible channels without disturbing the viewing operations of the user. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a portable receiving device that receives broadcast waves such as television broadcasts and radio (voice) broadcasts.
[0002]
[Prior art]
In general, channels that can be received (viewed) by a portable receiving device change due to various influences such as a place, time, an antenna state, and the like. From such a background, recently, a process of transmitting a receivable channel to a user by displaying a list of receivable channels has been proposed (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP, 2002-315080, A
[Problems to be solved by the invention]
However, the processing method of displaying a list of receivable channels cannot be applied to a receiving device without a display screen, and even if there is a receiving device with a display screen, the size of the display screen and the list Visibility may be poor depending on the display method.
[0005]
Further, in the processing method for displaying a list of receivable channels, the user has to select a channel while referring to the display screen, so that the operability is very poor. Further, when the list is displayed on the display screen, while the list is being displayed, the list is in the way and the viewing operation of the channel is hindered.
[0006]
The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a portable receiving apparatus capable of allowing a user to recognize a receivable channel without hindering a user's viewing operation. Is to provide.
[0007]
[Means for Solving the Problems]
The portable receiving apparatus according to the present invention is characterized in that a broadcast receiving unit that receives broadcast radio waves, a plurality of tuning buttons assigned to each channel, a plurality of lighting units provided for each tuning button, A receiving unit that determines a receivable channel and controls a lighting unit to turn on a tuning button corresponding to the receivable channel.
[0008]
That is, in the portable receiving device according to the present invention, the control unit determines a receivable channel and a non-receivable channel, and controls lighting of a tuning button corresponding to the receivable channel. According to such a configuration, the user can recognize the receivable channels at a glance by referring to the lighting state of the channel selection button, so that the receivable channels can be selected without hindering the user's viewing operation. The user can be easily recognized.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The portable receiving apparatus according to the present invention can be applied to a portable telephone having a function of receiving a broadcast wave such as a television broadcast or a radio (voice) broadcast as shown in FIG. Hereinafter, the configuration and operation of a mobile phone according to an embodiment of the present invention will be described in detail with reference to the drawings.
[0010]
[Configuration of mobile phone]
First, the configuration of a mobile phone according to an embodiment of the present invention will be described with reference to FIG.
[0011]
A mobile phone according to an embodiment of the present invention has an appearance as shown in FIG. 1 and includes a display unit 2, an operation input unit 3, an earpiece 4, and a mouthpiece 5 as main components. The display unit 2 is configured by a display device such as an LCD (Liquid Crystal Display) or an EL (Electro Luminescence) panel, and is controlled by a CPU (Central Processing Unit) 15 described later (see FIG. 2) to display characters, numerals, symbols, Icons, cursors, images, moving images, television broadcasts, etc. are visually displayed.
[0012]
The operation input unit 3 is used for operations such as input of numbers from "0" to "9", input of characters, input of symbols, input of transmission and reception instructions, and input of power on / off instructions. , A plurality of key buttons 6. The operation input unit 3 has a dial (jog dial) 7 used for operations such as a cursor movement operation and a screen scroll operation displayed on the display unit 2. In this mobile phone 1, a channel of a broadcast wave is allocated to each key button 6, and the user presses the key button 6 corresponding to the desired channel to select and view a desired channel of the broadcast wave. It is configured to be able to do it (so-called one-touch tuning function).
[0013]
The earpiece 4 and the mouthpiece 5 are respectively connected to a speaker 16 and a microphone 8 (see FIG. 2), which will be described later, and are used when the user makes a voice call with the other party.
[0014]
[Internal Configuration of Mobile Phone and Its Basic Operation]
Next, an internal configuration of the mobile phone 1 and a basic operation thereof will be described with reference to FIG. Since the configurations and operations of the display unit 2 and the operation input unit 3 are the same as those shown in FIG. 1, the description thereof will be omitted below.
[0015]
In the mobile communication terminal 1 shown in FIG. 2, a microphone 8 connected to the mouthpiece 5 (see FIG. 1) converts a user's call voice or the like into an analog voice signal. Then, the analog audio signal is amplified by an amplifier (not shown) and then input to a DSP (Digital Signal Processor) 9.
[0016]
When the analog audio signal is input, the DSP 9 converts the analog audio signal from analog to digital (A / D) at a predetermined sampling rate. The DSP 9 adds a CRC (Cyclic Redundancy Check) code to the digital audio data obtained by the A / D conversion for each transport block (TB), and performs channel coding (error correction coding) and interleaving processing. Is applied. Note that the transport block indicates a basic unit of data processed by the physical layer (a unit in which data is transferred from a MAC (Medium Access Control) layer to the physical layer).
[0017]
Also, the DSP 9 performs data modulation processing after adding overhead such as pilot bits for channel determination to the bit sequence after the interleaving processing, and performs in-phase on a data modulation mapped phase plane. And quadrature components are spread with two-layer spreading code sequences. Then, the DSP 9 limits the band of the spread chip data sequence to a predetermined band (5 MHz) using a raised cosine root Nyquist filter, converts the chip data sequence into an analog signal by digital / analog (D / A) conversion, and converts the analog signal into a transmission signal. To enter.
[0018]
When an analog signal is input from the DSP 9, the transmitting unit 10 orthogonally demodulates the analog signal, and frequency-converts the orthogonally demodulated intermediate frequency signal into a high-frequency signal (2 GHz band RF signal). Then, the transmission unit 10 amplifies the high-frequency signal and outputs the amplified high-frequency signal to the duplexer 11 as a transmission signal.
[0019]
The duplexer 11 is an antenna sharing device. That is, the duplexer 11 shares one antenna 12 for the transmission signal and the reception signal, sends the reception signal from the antenna 12 to the reception unit 13, and sends the transmission signal from the transmission unit 10 to the antenna 12. It is composed of a filter circuit having a function.
[0020]
The receiving unit 13 amplifies the high-frequency reception signal supplied via the antenna 12 and the duplexer 11, and frequency-converts the amplified reception signal into an intermediate-frequency signal. Then, the receiving unit 13 linearly amplifies the intermediate frequency signal by automatic gain control, and inputs the linearly amplified intermediate frequency signal to the DSP 9.
[0021]
At this time, the DSP 9 performs quadrature detection (Quadrature Detection) on the signal from the receiving unit 13, and performs A / D conversion on the in-phase and quadrature component analog signals obtained by the quadrature detection at a predetermined sampling rate. Then, the DSP 9 de-spreads the in-phase and quadrature components converted into digital values by the A / D conversion by using the same spreading code as the spreading code of the received signal after band-limiting the raised cosine root Nyquist filter. Time separation into a plurality of multipath components having different delay times.
[0022]
Also, the DSP 9 performs coherent lake synthesis on the data of each time-separated path, deinterleaves and channel-decodes the data sequence after the coherent lake synthesis, performs binary data determination, and transmits the data to the destination terminal. Play the data series. Then, the DSP 9 discriminates the reproduced data series into audio data and other communication data.
[0023]
The voice data is D / A-converted by the DSP 9, further amplified by an amplifier (not shown), and then sent to a speaker 14 built in the earpiece 4 (see FIG. 1). The speaker 14 is driven by the amplified analog audio signal. As a result, the voice of the call from the terminal of the call partner is emitted from the speaker 14.
[0024]
The DSP 9 analyzes what kind of data the communication data is, and performs a process according to the analysis result. For example, when the communication data is text data, the DSP 9 sends the text data to the CPU 15, and the CPU 15 controls the display of the text data on the display unit 2. For example, when the communication data is compressed image data, the DSP 9 decompresses the compressed image data and sends it to the CPU 15, and the CPU 15 controls the display of the image data on the display unit 2. Further, for example, when the communication data is compressed audio data, the DSP 9 expands the compressed audio data and outputs the audio to the speaker 16 or the speaker 14.
[0025]
The recording unit 17 is configured by a rewritable memory such as a flash memory which does not require a storage holding operation. The recording unit 17 stores application programs for realizing various functions such as a telephone directory function and application data including data corresponding to functions realized by the application programs such as personal names and telephone numbers. Further, the recording unit 17 stores setting data including values that can be arbitrarily set by the user among various setting data of the mobile communication terminal. Further, the recording unit 17 is configured to be able to record various data as needed, such as data such as transmitted and received e-mails, image data, and audio data.
[0026]
A ROM (Read Only Memory) 18 stores various computer programs such as a broadcast reception program 19 for realizing a reception state display process described later, various types of initial setting data, font data, and the like. Note that the ROM 18 may be a rewritable ROM such as an EEPROM (Electrically Erasable and Programmable Read Only Memory).
[0027]
A RAM (Random Access Memory) 20 functions as a working area when the CPU 15 performs various processes, and stores data as needed. The CPU 15 controls the operation of each unit according to a computer program stored in the recording unit 17 and the ROM 18 and performs various arithmetic processes.
[0028]
The illumination unit 21 includes a plurality of light emitting elements such as LEDs (Light Emission Diodes), and turns on the display unit 2 and the operation input unit 3 under the control of the CPU 15. Note that the mobile phone 1 is configured such that a light emitting element is assigned to each key button 6 and can be turned on for each key button 6. The lighting unit 21 is configured to be able to change the lighting color, lighting state (for example, blinking, etc.), and lighting intensity (illuminance) of each light emitting element under the control of the CPU 15.
[0029]
The camera unit 22 includes an imaging unit such as a CMOS (Complementary Metal Oxide Semiconductor) image sensor or a CCD (Charge Coupled Device) image sensor, and an optical system that forms an optical image of a subject or the like on the imaging unit. An instruction to shoot a subject using the camera unit 22 can be realized by using a predetermined key on the operation input unit 3 as a release button. The image data captured by the camera unit 22 is input to the DSP 9. The DSP 9 that has received the image data from the camera unit 22 sends the image data to the CPU 15, and the CPU 15 controls the display based on the image data on the display unit 2. The DSP 9 can also compress the image data as necessary, and send the compressed image data to the transmission unit 10 as transmission data. Further, the compressed image data can be recorded in the recording unit 17 through the CPU 15.
[0030]
The broadcast receiving unit 23 receives a broadcast wave such as a television broadcast or a radio broadcast via the antenna 24, and outputs an image or sound of a channel designated by the user from the display unit 2 or the speaker 16 under the control of the CPU 15. More specifically, in this embodiment, a television broadcast tuner and a radio broadcast tuner (not shown) are connected to the antenna 24 so that the mobile phone 1 can receive both the television broadcast and the radio broadcast. It is configured.
[0031]
Under the control of the CPU 15, the position detection unit 25 utilizes at least one of a communication radio wave and a GPS (Global Positioning System) radio wave, for example, a longitude (x), a latitude (y), a height ( z) Information (hereinafter, referred to as position information) related to z) is acquired. If the position detection unit 25 performs position detection using communication radio waves, the position detection unit 25 communicates with the nearest communication base station to acquire the position information of the mobile phone 1. When the position detection unit 25 performs position detection using GPS radio waves, a GPS radio wave reception function is provided in the position detection unit 25. The GPS receiving function mainly includes a GPS radio wave receiving antenna for receiving a GPS radio wave, a GPS radio unit for demodulating the received GPS radio wave, and a GPS control for calculating and outputting latitude and longitude information of the current location from the demodulated GPS radio wave. Unit. This GPS radio wave receiving function receives a GPS radio wave including a high-precision time signal transmitted by a GPS satellite from at least three GPS satellites existing in orbiting orbits capable of receiving a current signal. The distance to the GPS satellite is calculated from the arrival time of the GPS radio wave from the GPS satellite, and the point where each distance coincides is set as its own current position. In this embodiment, the position detector 25 detects the position information, but information set and recorded by the user may be used as the position information.
[0032]
[Reception status display processing]
In response to the user operating the operation input unit 3 to input a channel viewing request, the mobile phone 1 operates as described below to notify the user of receivable channels. Hereinafter, with reference to the flowchart shown in FIG. 3, the internal operation of the mobile phone 1 when performing the process of notifying the user of the receivable channel to the user (hereinafter, this process is referred to as a reception status display process) will be described in detail. I do.
[0033]
The flowchart shown in FIG. 3 is started by the CPU 15 executing the broadcast receiving program 19 loaded from the ROM 18 into the RAM 20 in response to a request to view a channel from the user, and the receiving state display process is performed in steps of The process proceeds to S1.
[0034]
In the process of step S1, the CPU 15 controls the broadcast receiving unit 23 to search for a receivable channel from a predetermined frequency band, and determines a receivable channel and a non-receivable channel. Thus, the processing of step S1 is completed, and the reception state display processing proceeds from the processing of step S1 to the processing of step S2.
[0035]
Here, the CPU 15 does not execute the above-described search processing every time a viewing request is made from the user, but refers to, for example, position information detected by the position detection unit 25 to change the position of the mobile phone 1. It may be executed accordingly. Specifically, when it is determined that the mobile phone 1 is not moving with reference to the position information, the CPU 15 executes the search process once or at a relatively long time period. On the other hand, when it is determined that the mobile phone 1 has moved with reference to the position information, the CPU 15 frequently executes the search processing according to the moving speed.
[0036]
In the process of step S1, the CPU 15 may execute the search process on all the channels being serviced, or may execute the search process only on the channel set by the user. Further, the CPU 15 may refer to the position information to predict a receivable channel at the current position, or limit a channel to be searched based on a channel determined to be receivable. Further, the CPU 15 may determine that the channel serviced at the current position is a receivable channel based on the position information without executing the search process. Here, data (broadcast station data) relating to channels for each region may be stored in the recording unit 17 or the ROM 18 in advance, or may be received by the broadcast receiving unit 23 from a broadcast station or the like via the antenna 24. Is also good. Further, the reception unit 13 may receive the communication data via the antenna 12.
[0037]
In the process of step S2, the CPU 15 controls the lighting unit 21 based on the result of the process of step S1, and controls the lighting of the key buttons 6 corresponding to the receivable channels as shown in FIG. In the example shown in FIG. 4, the key buttons 6 of “3”, “4”, “6”, and “0” light up, and for example, “3 channel”, “4 channel”, “6 channel”, “6 channel” The user is visually notified that "10 or more channels" can be received. Thus, the processing of step S2 is completed, and a series of reception state display processing ends. Thereafter, the user can view a desired channel via the display unit 2 and the speaker 16 by referring to whether or not the key button 6 is lit and pressing the desired key button 6.
[0038]
In the process of step S2, the CPU 15 controls the lighting of the key buttons 6 corresponding to the receivable channels. However, as shown in FIG. Alternatively, the reception state of the channel is divided into stages, such as a state in which one of audio can be received and a state in which both video and audio cannot be received, and the intensity, color, lighting state (for example, blinking) of the key button 6 , Etc.) may be controlled so that the lighting unit 21 is changed for each step. Similarly, the CPU 15 may control the illumination unit 21 so that the key button 6 blinks when the reception state changes. According to such a configuration, the mobile phone 1 can transmit the information on the receivable channel and the reception state of the channel to the user.
[0039]
Further, as shown in FIG. 5B, the CPU 15 may control the lighting unit 21 so as to change the color and the lighting state of the key buttons 6 according to a difference in broadcast content such as a genre. Further, the CPU 15 may control the blinking of the key button 6 corresponding to a channel on which a user frequently views a program, a program reserved for viewing, or a program on which an emergency broadcast is flowing. In this case, the CPU 15 may determine the broadcast content by referring to program information such as an EPG (Electronic Program Guide). According to such a configuration, the mobile phone 1 can transmit the broadcast contents of the channel to the user together with the information on the receivable channel.
[0040]
Similarly, the CPU 15 may control the illumination unit 21 so as to change the color of the key button 6 according to a difference between a broadcasting station and a broadcasting system. According to such a configuration, even when the location (area) where the mobile phone 1 is located changes, the broadcast station or series assigned to the key button 6 changes, the user can use the key button 6. By referring to the color of, the channel can be selected in the same manner as usual.
[0041]
[Effects of Embodiment]
As is apparent from the above description, according to the mobile phone 1 according to the embodiment of the present invention, the CPU 15 determines a receivable channel and a non-receivable channel, and sets the key button corresponding to the receivable channel. Since 6 is lit, the user can recognize the receivable channel at a glance by referring to the lighting state of the key button 6 without hindering the viewing operation.
[0042]
In addition, according to the mobile phone 1 according to the embodiment of the present invention, the CPU 15 changes the intensity, color, and lighting state of the illumination of the key buttons 6 according to a change in the reception state of the channel or the broadcast content. Since the lighting unit 21 is controlled, the user can determine the reception state of the channel and the broadcast content by referring to the difference in the intensity, color, and lighting state of the key button 6.
[0043]
Furthermore, according to the mobile phone according to the embodiment of the present invention, the user selects a desired channel by pressing the key button 6 corresponding to the desired channel with reference to the lighting state of the key button 6. , So that the operability is very good as compared with the conventional method of selecting a channel by referring to a receivable list.
[0044]
[Other embodiments]
As described above, the configuration and operation of the embodiment to which the invention made by the present inventor is applied have been described. However, the present invention is not limited to the description and the drawings that constitute a part of the disclosure of the present invention according to this embodiment. Absent. For example, the present invention can be applied to a remote control device (so-called remote controller) of a television device or a radio device as shown in FIGS. 6A and 6B, for example. That is, it should be added that all other embodiments, examples, operation techniques, and the like performed by those skilled in the art based on the above-described embodiment are included in the scope of the present invention.
[0045]
【The invention's effect】
According to the present invention, a receivable channel can be easily recognized by a user without hindering the user's viewing operation.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an overall configuration of a mobile phone according to an embodiment of the present invention.
FIG. 2 is a block diagram showing an internal configuration of the mobile phone shown in FIG.
FIG. 3 is a flowchart illustrating a channel notification process according to an embodiment of the present invention.
FIG. 4 is a schematic diagram showing a state in which the mobile phone shown in FIG. 1 notifies a receivable channel.
FIGS. 5A and 5B are schematic diagrams showing (a) how the illumination intensity of the key button changes according to the reception state, and (b) how the illumination color of the key button changes according to the broadcast content.
FIG. 6 is a schematic diagram showing another configuration of the portable receiving device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mobile telephone, 2 ... Display part, 3 ... Operation input part, 4 ... Earpiece, 5 ... Mouthpiece, 6 ... Key button, 7 ... Dial (jog dial), 15 ... CPU, 18 ... ROM, 19 ... Broadcast Receiving program, 23: Broadcast receiving unit, 24: Antenna, 25: Position detecting unit

Claims (4)

A broadcast receiving unit for receiving broadcast radio waves,
Multiple tuning buttons assigned to each channel,
A plurality of lighting units provided for each of the tuning buttons,
A portable receiving device comprising: a control unit that determines a receivable channel by the broadcast receiving unit and controls the lighting unit so as to light a tuning button corresponding to the receivable channel. The portable receiving device according to claim 1,
The above-mentioned control unit determines the reception state of each channel stepwise, and controls the above-mentioned illumination unit so as to change the illumination intensity of the channel selection button stepwise according to the reception state. apparatus. The portable receiving device according to claim 1,
The portable receiving device, wherein the control unit determines broadcast content for each channel and controls the illumination unit to change an illumination color or a lighting state of a channel selection button according to the broadcast content. The portable receiving device according to claim 1,
The portable receiving device, wherein the control unit determines a broadcast station series for each channel, and controls the lighting unit so as to change an illumination color of a tuning button in accordance with the broadcast station series.

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