JP2003110955A - Mobile viewing apparatus and its peripheral apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile viewing apparatus and its peripheral apparatus capable of removing a grievance against disabled viewing of a program when a viewer enters an underground shopping center during program viewing by a mobile viewing apparatus. SOLUTION: When the viewer enters the underground shopping center out of the reach of a ground wave digital broadcast and cannot view a program, the mobile viewing apparatus 2 uses a PHS data card 4 and gives program identification information and a video recording command to the peripheral apparatus 1. The peripheral apparatus 1 starts receiving the ground wave digital broadcast program on the basis of the program identification information and records encoded video/audio data to a memory card 3. The viewer takes out the memory card from the peripheral apparatus 1 after return to home and mounts the memory card 3 to the mobile viewing apparatus 2 to reproduce the program. Thus, the viewer can view parts of the program unable to be viewed before.

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 and peripheral devices for television viewing and the like.

[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, an object of the present invention is to provide a portable viewing device and a peripheral device which are excellent in 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, the means for displaying the video on the display and outputting the sound, and the wireless data transmitting / receiving means for wirelessly transmitting / receiving the data to / from the peripheral device are being received. Means for transmitting information specifying a terrestrial digital broadcast program to the peripheral device by the wireless data transmission / reception means,
It is characterized by having.

[0006] When the terrestrial digital broadcasting program being received cannot be decoded in the portable viewing device, information and recording for specifying the terrestrial digital broadcasting program automatically or in response to a user's instruction. The command may be transmitted to the peripheral device.

Further, in the above portable viewing apparatus, when the terrestrial digital broadcast program being received cannot be decoded, information for specifying the terrestrial digital broadcast program automatically or in response to an instruction from the user. Alternatively, the transmission instruction may be transmitted to the peripheral device, and the encoded video / audio data of the program transmitted from the peripheral device may be acquired.

The peripheral device of the present invention includes a tuner for receiving terrestrial digital broadcasting to obtain encoded video / audio data, and a storage for storing the encoded video / audio data supplied from the tuner in a memory card. Means, wireless data transmitting / receiving means for wirelessly transmitting / receiving data to / from the portable viewing device, and information for specifying a terrestrial digital broadcast program from the portable viewing device by using the wireless data transmitting / receiving means. And means for executing.

When the peripheral device receives a recording command signal from the portable viewing device, it is preferable to record the encoded video / audio data of the received program in the memory card. In this case, it is preferable to send a response signal to the portable viewing device regarding whether the program can be received or recorded. Further, when receiving a transmission command signal from the portable viewing device, it is preferable to transmit the encoded video / audio data of the received program to the portable viewing device.

[0010]

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 broadcast viewing system, a stationary peripheral device 1 receives an analog broadcast, and encoded video / audio data based on the received broadcast is inserted into a slot 101 of a memory card 3 (for example, CompactFlash card (trademark) or It is stored in a multimedia card (trademark) or the like. Furthermore, the stationary peripheral device 1 is
The terrestrial digital broadcast is also received, and the encoded video / audio data obtained by this reception is stored in the memory card 3 inserted into the slot 101.

The body portion 1a of the stationary peripheral device 1 is designed to be vertically long, and has leg portions 1b at its lower portion to prevent it from falling. In addition, the stationary peripheral device 1 has a power button and operation buttons related to viewing (play / pause,
Stop, feed) are provided, but operation buttons for channel selection are not provided. 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.

Both the stationary peripheral device 1 and the portable viewing device 2 can be equipped with a PHS data card in the slot, and data can be transmitted and received by the wireless telephone network even if they are far from each other.

The circuit configurations of the stationary peripheral device 1 and the portable viewing device 2 will be described in detail below 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. Terrestrial digital tuner 1
20 receives the terrestrial digital broadcast and encodes the encoded video /
Acquires audio data and stores it in MPEG4 (Moving
The Picture Experts Group 4) encoder 108 is supplied. Activation instructions for the tuner 102 and the tuner 120 and channel selection information (channel information, etc.) for receiving an arbitrary broadcast are given from the CPU 110 via the I / O (input / output) circuit 103 and the system bus 104. The CPU 110 receives tuning instruction information (designated channel information, program information, designated time information, etc.) from the memory card 3 or PHS data card 4 via the system bus 104, the PCMCIA interface 105, and 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 the broadcast reception signal, which is an analog signal, into a digital signal to convert it to MPEG.
4 to the encoder 108. According to MPEG4, the MPEG4 encoder 108 individually describes, for example, a background in a video or a person in the background as an object,
Shape information is added to handle each object of this arbitrary shape, and DCT processing and motion vector processing are performed in the same manner as MPEG2 to generate a video packet, 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
It is used in the above processing of the MPEG4 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 has a circuit for converting an alternating current from a commercial power source into a direct current, and when the portable viewing device 2 is mounted on 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 data transmission / reception 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 (encoded video / audio data) stored in the memory card 3 is PCMC.
IA interface 220 and system bus 213
And is supplied to the MPEG4 decoder 204. Also,
The tuner 230 which receives the terrestrial digital broadcasting extracts the MPEG4 bit stream data broadcast by the terrestrial digital broadcasting, and the MPEG4 decoder 2
04, or supply to the system bus 213 for recording to the memory card 3. The MPEG4 decoder 204 decodes the bit stream data to obtain the quantized coefficient and the motion vector, and supplies the video data obtained by performing the inverse DCT transform and the motion compensation control based on the motion vector to the graphics controller 205. The graphics controller 205 performs processing such as color adjustment on video data (for example, R, G, B data). Also, the graphics controller 205
Characters output from the CPU 209 (operation buttons,
A process of displaying a menu screen, an EPG screen based on program information acquired from terrestrial digital broadcasting, etc.) on the liquid crystal display panel 202 is also performed. 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.
The SDRAM 210 is used in the above processing of the MPEG4 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) 217 are provided to enable a short-distance wireless network.
Furthermore, the flash ROM 218 and the SDRAM 219 are also provided. The battery 221 is a secondary battery, and is a stationary peripheral device 1
Power is supplied from and stored.
The mobile phone unit 231 is supposed to be used for a normal phone call.

The CPU 209 processes the short-distance wireless network, and inserts the PHS data card 4 into the slot 201.
Data transmission / reception using the telephone network when installed, control of each functional unit based on the received data, Flas
Read / write control of the hROM 218 and SDRAM 219 is also performed. Further, when the user uses the touch panel 211 or the like to specify a received program (a channel and time for analog broadcasting for the peripheral device 1 and a program for digital broadcasting), the information can be stored in the memory card 3. It has become.

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. If the PHS data card 4 is also installed in the slot 101 of the stationary peripheral device 1, it is possible to perform long-distance data communication with the stationary peripheral device 1.

By the way, while watching a program by the portable viewing device 2 or recording the program, the user may enter a place such as an underground mall where the terrestrial digital broadcasting wave cannot be received, or
When the user deviates from the terrestrial digital broadcasting area, the program cannot be viewed or recorded.

Therefore, according to the present invention, in such a case, the stationary peripheral device 1 is used to record a portion of the received program which is no longer seen.

FIG. 4 is a flowchart showing the processing contents when the terrestrial digital broadcast is received by the portable viewing device 2. If the reception level drops due to entering an underground shopping center or moving out of the broadcasting area, and the encoded video / audio data of the received program cannot be decoded beyond the error-correctable limit (YES in step S1), "You cannot watch. The message "Do you want to record on peripheral device?" And the "Yes" and "No" buttons are displayed on the liquid crystal display panel 202 (step S2). When the above "No" button is operated (NO in step S3), step S
Proceed to 9. On the other hand, when the "Yes" button is operated (YES in step S3), the PHS of the portable viewing device 2 is selected.
A line connection process from the data card 4 to the PHS data card 4 of the stationary peripheral device 1 is executed (step S4).
When the line is connected (YES in step S5), the program specifying information and the recording command are transmitted from the PHS data card 4 of the portable viewing device 2 to the PHS data card 4 of the stationary peripheral device 1 (step S6). Wait for a response from the stationary peripheral device 1. If there is a response that recording is not possible (Y in step S7
ES), the message "Peripheral device cannot be recorded" is displayed (step S10), and the ending process is performed (step S9). If there is a response that recording is possible, the message "I have issued a recording instruction to the peripheral device" is displayed (step S
8) and end processing is performed (step S9).

FIG. 5 is a flow chart showing the processing contents in the stationary peripheral device 1 when receiving the command from the portable viewing device 2. When there is an incoming call at the PHS data card 4 (YES in step S11), the command content from the portable viewing device 2 is acquired (step S).
12). It is determined whether the command content is a program recording command (step S13), and if it is not a program recording command,
Other processing is performed (step S20). If the command is a program recording command, it is determined whether or not the program recording is possible based on the presence / absence of the memory card 3, the remaining memory, the reception status of the program based on the program identification information, etc. (step S1).
4) If the recording is impossible (NO in step S14), the PHS is disconnected after the recording impossible response is made (step S).
15). On the other hand, if recording is possible (Y in step S14)
ES), the process of recording the coded video / audio data of the received program in the memory card 3 is started (step S16), and after the response of recording possible (recording start) is made, the PHS is disconnected (step S17). Then, it is judged whether or not the program is finished (step S18), and when it is finished, the recording process is finished (step S19). Further, a recording completion notification is sent to the portable viewing device 2 by a direct call using PHS or an electronic mail transmission (step S20).

By this processing, after returning home, the user removes the memory card 3 from the stationary peripheral device 1 and mounts it on the portable viewing device 2 to perform a reproducing operation, so that the part where the program is not seen can be seen. You can watch. In the above example, the case where the program is viewed by the stationary peripheral device 1 is illustrated, but the program is recorded in the memory card 3 of the stationary peripheral device 1 in the same manner. Can be made to perform a recording process. Further, instead of recording by the stationary peripheral device 1, encoded video / audio data of the program received by the stationary peripheral device 1 may be transmitted to the portable viewing device 2 by the PHS data card 3. According to this, the user can watch the continuation of the program at the place where the program cannot be viewed.

It should be noted that the start time of the program to be watched may be given to the portable viewing device 2 in advance, and an alarm or message may be used to notify that the program will start a few minutes before the start of the program. . Although not shown, the stationary peripheral device 1 is also provided with a communication block 216 and an interface (for example, Bluetooth (trademark)) 217 provided in the portable viewing device 2 and a communication block and an interface of the same standard. , Stationary peripheral device 1
A short-distance wireless network may be provided between the portable viewing device 2 and the portable viewing device 2. According to this, it is also possible to give tuning information from the portable viewing device 2 to the stationary peripheral device 1 via the short-distance wireless network. In addition, such a wireless network enables the stationary peripheral device 1 to perform MPEG
It is possible to transmit the bitstream data according to No. 4 to the portable viewing device 2. According to this, the portable viewing device 2
You can see the video of the analog broadcasting currently being broadcast using 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 bitstream data from the stationary peripheral device 1 to the portable viewing device 2, the stationary peripheral device 1
A composite video signal (may be a component video signal) may be transmitted from the mobile terminal to the portable viewing device 2 via an AV terminal (or an S terminal or a D terminal).

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.

[0036]

As described above, according to the present invention, while watching or recording a program by the portable viewing device, the user enters a place where the terrestrial digital broadcast wave cannot be received, such as an underground mall, and the program is watched or Even if the recording cannot be performed, by recording the invisible portion using the stationary peripheral device, the portion can be viewed later. In addition, by transmitting to the portable viewing device using the stationary peripheral device, the continuation of the program can be viewed at that location.

[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 the processing contents when a terrestrial digital broadcast is received by the portable viewing device of the embodiment of the present invention.

5 is a flowchart showing the processing contents in the stationary peripheral device when receiving a command from the portable viewing device which performs the processing of the flowchart of FIG. 4. FIG.

[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

Continued front page    (72) Inventor Ichiro Kajitani             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. (72) Inventor Wataru Matsuoka             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. F-term (reference) 5C025 AA25 BA27 CA02 CA19 DA01                       DA06 DA10                 5C052 AA17 CC01 CC11 DD06 DD10                       EE03 EE08                 5C064 AA06 AC01 AC18 AC20 AD02                       AD08 AD14

Claims (7)

[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. A wireless data transmitting / receiving unit for wirelessly transmitting / receiving data to / from the peripheral device, and a unit for transmitting information specifying a terrestrial digital broadcast program being received to the peripheral device by the wireless data transmitting / receiving unit. A portable viewing device characterized by. 2. The portable viewing apparatus according to claim 1, wherein when the terrestrial digital broadcasting program being received cannot be decoded, the terrestrial digital broadcasting is automatically or in response to a user's instruction. A portable viewing device characterized in that information specifying a program and a recording command are transmitted to peripheral devices. 3. The portable viewing apparatus according to claim 1, wherein when the terrestrial digital broadcasting program being received cannot be decoded, the terrestrial digital broadcasting is automatically or in response to a user's instruction. A portable viewing device, characterized in that information specifying a program and a transmission instruction are transmitted to a peripheral device, and encoded video / audio data of the program transmitted from the peripheral device is acquired. 4. A tuner for receiving terrestrial digital broadcasting to obtain encoded video / audio data, storage means for storing the encoded video / audio data supplied from the tuner in a memory card, and a portable viewing device. Wireless data transmission / reception means for wirelessly transmitting / receiving data, and means for obtaining information specifying a terrestrial digital broadcast program from the portable viewing device using the wireless data transmission / reception means, and executing reception processing of the program. Peripheral device characterized by having. 5. The peripheral device according to claim 4, wherein when the recording command signal is received from the portable viewing device, the encoded video / audio data of the received program is recorded in the memory card. apparatus. 6. The peripheral device according to claim 4, wherein when the transmission command signal is received from the portable viewing device, the encoded video / audio data of the received program is transmitted to the portable viewing device. Peripherals to do. 7. The peripheral device according to claim 5, wherein a response signal regarding reception / recording of the program or start / completion of recording is transmitted to the portable viewing device. And peripheral devices.