JP2003101894A - Portable viewing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable viewing device with excellent handleability. SOLUTION: A present position is acquired by using a GPS card 5 and broadcasting information of the place is acquired on the basis of the present position. In the broadcasting information, broadcasting area information and tuning information of the area (information that a broadcasting station A is channel 6 or the like) are included. On the basis of position information when the portable viewing device 2 leaves a present broadcasting area, it is reported to a user by an alarming sound and a message. Also at the time of leaving the broadcasting area, acquisition of the same program is tried by using the tuning information of the area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable viewing device capable of watching television.

[0002]

2. Description of the Related Art Conventionally, a portable television receiving device has been provided, and such a device receives a terrestrial analog broadcast by a built-in small tuner and projects a received image on a liquid crystal display panel. . In recent years, MPEG4 (Moving Picture)
By recording coded video data based on Experts Group 4) in a memory card and loading the memory card in a slot of a portable viewing device, the recorded video can be enjoyed even when out of the office. The coded video data based on MPEG4 can be obtained by passing a received video by a normal television broadcast or a video picked up by a handy camera through an MPEG4 encoder, or by downloading it using the Internet. .

[0003]

As described above, due to the sophistication of the video coding technology and the miniaturization of equipment, it is possible to easily enjoy the video on the go.
Furthermore, there is a demand for a portable viewing device that is easy to use.

In view of the above circumstances, it is an object of the present invention to provide a portable viewing device having excellent usability.

[0005]

In order to solve the above-mentioned problems, a portable viewing apparatus of the present invention has a tuner for receiving terrestrial digital broadcasting and acquiring encoded video / audio data, and an encoded video.・ Means for storing audio data in the memory card and encoded video read from the memory card
The audio data and the encoded video / audio data supplied from the tuner are decoded to display the video on the display and output the audio, and means for acquiring the broadcast information of the current position. .

The mobile phone base station may be configured so as to grasp the current position of the portable viewing device and receive the transmission of this current position information to know the current position. Further, the mobile phone base station may be configured to grasp the current position of the portable viewing device, receive the broadcast information of the location, and acquire the broadcast information. Further, a memory storing broadcast information corresponding to the position information may be provided, and the broadcast information may be read from the memory based on the acquired current position information.

[0007] When the current position is compared with the broadcast area information included in the broadcast information and it is determined that the current position is moving out of the broadcast area or is out of the broadcast area, a sound and / or a message may be used for notification. . Further, it is preferable that the currently-received broadcast is automatically and continuously received by the in-broadcast-area tuning information included in the broadcast information even when the broadcast area is changed. .

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
It will be described with reference to FIG.

As shown in FIGS. 1 and 2, a broadcast viewing system is constituted by the stationary peripheral device 1 and the portable viewing device 2 of this embodiment. In this system, the stationary peripheral device 1 receives an analog broadcast, and the encoded video / audio data obtained by encoding the received broadcast is inserted into a slot 101 into a memory card 3 (for example, CompactFlash card (trademark)). Or multimedia card (trademark)). Main unit 1 of stationary peripheral device 1
The a is designed to be vertically long, and the leg part 1b is at the bottom.
Has been provided to prevent falls. Further, the stationary peripheral device 1 is provided with a power button and operation buttons (play / pause, stop, feed) for viewing, but no operation buttons for channel selection. A housing recess 1c is formed on the front side of the main body 1a of the stationary peripheral device 1, and the portable viewing device 2 can be inserted and mounted in the housing recess 1c. In this mounted state, the portable viewing device 2 is adapted to be charged by the stationary peripheral device 1.

The portable viewing device 2 has a substantially rectangular shape and a flat shape and is driven by a battery. The portable viewing device 2 receives the terrestrial digital broadcast by the tuner 230. In addition, the encoded video / audio data is read from the memory card 3 inserted in the slot 201, the video is displayed on the liquid crystal display panel 202, and the audio is output from the earphone 203. A touch panel 211 is attached on the liquid crystal display panel 202, and a desired instruction can be given by operating the panel with a touch pen or the like. Note that operation buttons (play / pause, stop, feed, volume, etc.) related to viewing are provided on the housing.

The circuit configurations of the stationary peripheral device 1 and the portable viewing device 2 will be described below in detail with reference to FIG.

First, the stationary peripheral device 1 will be described. The tuner 102 receives an analog broadcast and outputs this broadcast reception signal. The I / O (input / output) circuit 10 receives the tuning instruction (channel information) for receiving the activation instruction of the tuner 102 and arbitrary broadcasting.
3 and the system bus 104 from the CPU 110. The CPU 110 receives the tuning instruction information (specified channel information, specified time information, etc.) from the user, the system bus 104, the PCMCIA interface 105,
And from the memory card 3 via the slot 101. The switch 106 has an input unit for inputting the broadcast reception signal and an input unit for inputting an external signal, and selects one of the signals and supplies it to the A / D conversion circuit 107.

The A / D conversion circuit 107 converts an analog signal into a digital signal to convert it into MPEG4 (Moving).
The Picture Experts Group 4) encoder 108 is supplied. MPEG4 encoder 108
In accordance with MPEG4, for example, a background in a video or a person in the background is individually described as an object, shape information is added to handle each object of this arbitrary shape, and DCT processing and a motion vector similar to MPEG2 are added. A video packet is generated by performing processing and the like, and a bit stream in which this is continued is output. The voice is also subjected to predetermined encoding, and this voice encoded data is incorporated into the bit stream. SDRAM109 is MPE
It is used in the above processing of the G4 encoder 108.

The bit stream (encoded video / audio data) output from the MPEG4 encoder 108 is a system bus 104, a PCMCIA interface 105,
And stored in the memory card 3 via the slot 101.

Two sets of the slot 101 and the PCMCIA interface 105 are provided. In addition to the memory card 3, the PHS data card 4 and the like can be mounted in the slot 101.

The charging circuit 113 includes a circuit for converting an alternating current from a commercial power source into a direct current, and when the portable viewing device 2 is attached to the stationary peripheral device 1 as shown in FIG. Charging power is supplied to the portable viewing device 2 via the terminal portion.

The CPU 110 performs the processing of storing the output of the MPEG4 encoder 108 in the memory card 3 and the operation control of the tuner 102 as well as the transmission / reception of data when the PHS data card 4 is mounted in the slot 101. Control of each functional unit based on FlashR
Read / write control of the OM 111 and the DRAM 112 is also performed.

Next, the portable viewing device 2 will be described.
The MPEG4 bit stream data stored in the memory card 3 is stored in the PCMCIA interface 22.
0, and is supplied to the MPEG4 decoder 204 via the system bus 213. Further, the tuner 230 receiving the terrestrial digital broadcast takes out the MPEG4 bit stream data broadcast by the terrestrial digital broadcast, gives it to the MPEG4 decoder 204, and outputs it to the system bus 213 for recording in the memory card 3. To supply. The MPEG4 decoder 204 decodes the bit stream data to obtain a quantized coefficient and a motion vector,
Video data obtained by performing inverse DCT conversion or motion compensation control based on motion vectors is supplied to the graphics controller 205. The graphics controller 205 uses video data (for example, R, G, B data)
A process such as color adjustment is applied to. Further, the graphics controller 205 also performs processing of displaying on the liquid crystal display panel 202 characters and the like (operation buttons, menu screen, EPG screen based on program information acquired from terrestrial digital broadcasting, etc.) instructed to be output from the CPU 209. The audio decoder 206 receives the audio code data in the bit stream from the MPEG4 decoder 204 and decodes the audio code data to generate audio data. SDRAM 210 is MPEG
It is used in the above processing of the 4 decoder 204.

The LCD controller 207 drives the liquid crystal display panel 202 based on the video data supplied from the graphics controller 205. The D / A converter 208 receives the audio data output from the audio decoder 206, performs D / A conversion, and generates an analog signal of a right (R) sound and an analog signal of a left (L) sound to generate the earphone 203. Give to.

The operation information on the touch panel 211 is
Dedicated interface 212 and system bus 213
Is given to the CPU 209 via. The CPU 209 grasps the instruction content by the correspondence between the operation information and the display of the operation buttons and the like on the liquid crystal display panel 202, and executes necessary processing.

The main body key 214 corresponds to the above-mentioned operation buttons (play / pause, stop, forward) for viewing. Operation information for the main body key 214 is sent to the CP via the interface 215 and the system bus 213.
Given to U209. The CPU 209 executes necessary processing based on the operation information.

A communication block 216 and an interface (for example, Bluetooth (trademark)) 217 are provided to enable a wireless network. In addition, the FlashROM 218 and the SDRAM 219
Also prepare. The battery 221 is a secondary battery and is adapted to receive power from the stationary peripheral device 1 and store the power. The mobile phone unit 231 is supposed to be used for a normal phone call.

The CPU 209 performs processing for a wireless network, data transmission / reception when the PHS data card 4 is installed in the slot 201, control of each functional unit based on received data, FlashROM 218 and SDRAM 219.
Read / write control is also performed. Further, when the user designates a received program (channel and time designation) using the touch panel 211 or the like, a process of storing the information in the memory card 3 is performed.

The processing by the CPU 209 will be further described. By mounting the PHS data card 4 in the slot 201, it is possible to browse pages using e-mail or the Internet. Therefore, the portable viewing device can be used as a net terminal in addition to being used as a TV viewing device or a video reproducing device.

Although not shown, the position information can be acquired by incorporating a GPS chip or by mounting the GPS card 5 in the slot 201. GPS
Chips and GPS cards are radio waves for mobile phones (for example, cd
It uses maOne (trademark) radio waves (gpsO
ne (trademark)), the current position can be calculated with high accuracy by using the radio waves of GPS satellites in addition to a plurality of base stations communicating with one mobile phone. .

FIG. 4 is a flow chart briefly showing the contents of the terrestrial digital broadcast recording process by the portable viewing device 2. For example, as a menu screen on the liquid crystal display panel 202, "Watch TV" or "Record TV"
Items such as "execute continuous TV recording for broadcasting area", "make recording reservation", "play", and "use as information terminal" are displayed, and "execute continuous TV recording for broadcasting area" is selected. Then, first, it is judged whether or not it is near the boundary of the broadcasting area and whether or not it is away from the broadcasting area (whether the current position is moving away from the broadcasting area or is out of the broadcasting area) (steps S1 and S2). If there is, a message "I will not be displayed" is displayed and an alarm sound is emitted (step S3). next,
It is determined whether the broadcasting area has changed (step S4). If the broadcast area has not changed, and steps S1 and S2
If the answer is NO, the video recording is performed (step S1
0), and proceeds to step S9. On the other hand, when it is determined in step S4 that the broadcast area has changed, recording is temporarily stopped (step S5), and a channel is searched for based on the tuning information of the broadcast area (step S6). And
If the same program is found, recording is resumed (step S8),
Go to step S9. On the other hand, if not found, it is determined whether or not all channels have been searched (step S1).
1) If the answer is NO, the process proceeds to step S6. If the answer is YES, a message such as "No identical program found" is displayed (step S12). In step S9, it is determined whether or not the recording is ended (end processing by the user, arrival of the recording end time, etc.), and if YES, the recording is ended. In the above example, the case of recording is shown, but the continuous viewing process can be executed even in simple program viewing.

The portable viewing device 2 can acquire the current position and broadcast information as follows. Here, the current position can be represented by latitude and longitude. Broadcast information is broadcast area information (longitudinal information indicating the broadcast area) and / or
Alternatively, it is composed of channel selection information within the broadcast area (for example, information about 6 channels of XX broadcast in a certain broadcast area). For example, a GP is installed in the slot 201 of the portable viewing device 2.
When the mobile phone base station grasps the current position of the portable viewing device 2 by transmitting the S card and transmits this current position information, the transmitted current position information is received and the current position is received. You can know. When the mobile phone base station grasps the current position of the portable viewing device 2 and transmits the broadcast information corresponding to the current position, the broadcast information received is received to acquire the broadcast information. be able to. Of course, the portable viewing device 2 can also directly grasp the current position by receiving a radio wave from a GPS satellite and executing a calculation process.

If the portable viewing device 2 stores the broadcast information corresponding to the position information in the memory, the broadcast information can be read from the memory based on the acquired current position information.

A supplementary description will be given below of the process of searching for the same program when the broadcast area changes. For example,
In a certain broadcasting area, XX broadcasting station has 6 channels and a certain M
It is assumed that a PEG4 program is being broadcast and received by the portable viewing device 2. At this time, information for identifying this received program is held. After that, if the user moves out of the broadcasting area due to movement, the tuning information of the broadcasting area corresponding to the current position is acquired, and, for example, the XX broadcasting station or the ΔΔ broadcasting station of the broadcasting station is broadcast on 2 channels in this broadcasting area. Know that. Then, the portable viewing device 2 sets the reception frequency to 2 channels, and
Acquires the program information transmitted by the terrestrial digital broadcasting of the channel. This program information includes, for example, EIT (Ev
entInformation Table) is included. By comparing the EIT with the specific information, it can be determined whether or not the program received immediately before is on the channel. Of course, the method is not limited to such a method, and it may be determined by another method whether or not the program received until immediately before is on the channel.

Although not shown, the stationary peripheral device 1 and the communication block 2 provided in the portable viewing device 2 are also provided.
16 and an interface (for example, Bluetooth (registered trademark)) 217, a communication block and an interface of the same standard are provided, and the stationary peripheral device 1 and the portable viewing device 2 are provided.
You may make it possible to establish a wireless network.
According to this, it is also possible to give tuning information from the portable viewing device 2 to the stationary peripheral device 1 via a wireless network.
In addition, such a wireless network enables the stationary peripheral device 1 to transmit the MPEG4 bitstream data to the portable viewing device 2. According to this, the portable viewing device 2 is currently broadcasting. You can watch the video of analog broadcasting in real time. Note that the stationary peripheral device 1 and the portable viewing device 2 may be connected by a wired network, and channel selection information and bit stream data may be transmitted in the same manner as above. Further, instead of sending the MPEG4 bit stream data from the stationary peripheral device 1 to the portable viewing device 2, a composite video signal (may be a component video signal) is sent from the stationary peripheral device 1 to an AV terminal (or,
You may make it output to the portable viewing-and-listening apparatus 2 via (S terminal, D terminal, etc.).

Broadcasting is viewed in real time with the portable viewing device 2 mounted in the housing recess 1c of the stationary peripheral device 1, and as shown in FIG.
In the case where the operation button of 1 is hidden by the stationary peripheral device 1, the operation button is arranged in the stationary peripheral device 1 in the same manner as the operation button, and portable viewing is performed on the stationary peripheral device 1 side. The device 2 may be operable. The operation information on the operation buttons of the stationary peripheral device 1 can be sent to the portable viewing device 2 side using a wireless network, a wired network, or a wired network. In addition, the stationary peripheral device 1 may be provided with a speaker, the sound of the received broadcast is output from the speaker of the stationary peripheral device 1, and the video is displayed on the liquid crystal display panel 20 of the portable viewing device 2.
It may be possible to adopt a mode in which it is displayed in 2.

[0032]

As described above, according to the present invention, even when the broadcast area changes due to movement, the broadcast information in the broadcast area is automatically used to continuously view / listen to the same program. It produces various effects such as recording.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a mounting state of a portable viewing device and a stationary peripheral device according to an embodiment of the present invention.

FIG. 2 is an external perspective view of the portable viewing device according to the embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a portable viewing device and a stationary peripheral device according to an embodiment of the present invention.

FIG. 4 is a flowchart showing a TV recording process of the portable viewing device according to the embodiment of the present invention.

[Explanation of symbols]

1 Stationary peripheral devices 102 tuner 108 MPEG4 encoder 113 charging circuit 2 Portable viewing device 202 liquid crystal display panel 204 MPEG4 decoder 3 memory card 4 PHS data card

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ identification code FI theme code (reference) H04Q 7/34 H04B 7/26 106B (72) Inventor Tetsutaka Yabuta 2-5 Keihanmoto-dori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. F term (reference) 5C025 AA21 BA27 BA30 CA09 CB10 DA01 DA10 5K024 AA71 CC10 CC11 DD02 GG01 5K061 AA09 BB07 BB17 GG09 5K067 AA21 BB21 DD17 DD18 DD19 DD20 DD41 DD52 EE02 FF02 EE02 FF02 EE02 FF02EE16FF16EE FF32 HH22 JJ53 KK13 KK15 5K101 KK18 LL12 NN18 NN21 PP03

Claims (6)

[Claims] 1. A tuner for receiving terrestrial digital broadcasting to obtain coded video / audio data, and a coded video / audio
A means for storing the audio data in the memory card, a means for decoding the encoded video / audio data read from the memory card and the encoded video / audio data supplied from the tuner, displaying the video on the display and outputting the audio. And a means for acquiring the broadcast information of the current position, the portable viewing device. 2. The mobile viewing device according to claim 1, wherein the mobile phone base station receives the current position information by grasping the current position of the mobile viewing device, and receives the current position to determine the current position. A portable viewing device characterized in that it is configured to know. 3. The mobile viewing device according to claim 1, wherein the mobile phone base station receives the broadcast information of the mobile viewing base station that grasps the current position of the mobile viewing device and transmits the broadcast information of the location. A portable viewing device characterized in that it is configured to acquire. 4. The portable viewing device according to claim 1, further comprising a memory that stores broadcast information associated with the position information, and broadcast information from the memory based on the acquired current position information. A portable viewing device characterized by reading. 5. The portable viewing device according to claim 1, wherein the current position is being deviated from the broadcast area by comparing the current position and the broadcast area information included in the broadcast information. Alternatively, when it is determined that the portable viewing device has come off, a portable audiovisual device is provided, which gives a sound and / or a message. 6. The portable viewing device according to any one of claims 1 to 5, wherein the currently received broadcast is included in the broadcast area tuning information included in the broadcast information. A portable viewing device characterized in that it is configured to automatically and continuously receive even when there is a change.