JPH05328360A - Transmitter/receiver - Google Patents

Abstract

PURPOSE:To surely transfer data without being influenced by the disconnection of a transmission line by shotening a transfer time required for spatially transmitting data such as image information. CONSTITUTION:Image data are processed through a DCT part 11, a quantizing part 12 and a data area dividing part 13, converted into plural digital signals having respectively different carrier frequency bands and a spatially transmittable transmission format and outputted from infrared LEDs 16a, 16b, 16c as remote-controlled signals. These signals are received by photodiodes 17a to 17c, converted into current/voltage signals through current/voltage conversion parts 18a to 18c and extracted as signals in prescribed frequency bands, the extracted signals are synthesized by a data area synthesizing part 24 and the synthesized signal is decoded to the original image signal by prescribed image processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmitter / receiver for spatially transmitting image information and the like, and more particularly to a transmitter / receiver for transmitting image information at high speed and with high efficiency.

[0002]

2. Description of the Related Art Generally, a transmitter / receiver for spatially transmitting signals such as image information has an optical remote control system (hereinafter referred to as a remote controller) using a combination of an infrared LED and a pin photodiode, and a television (TV). ) Installation started from the set, because of its wide range of operation and few malfunctions, it was adopted more widely than the code type and ultrasonic type used at the same time, and the optical remote control is the mainstream type.

Because of its usefulness and simplicity, it is installed not only in TV sets but also in most video equipment such as VTRs and VDs, and audio equipments such as CDs, and more recently, in zoom compact cameras and the like. It is widely used as well.

Multifunctional and multipurpose remote controls that can simultaneously control a plurality of video and audio devices with a single transmitter are also widespread, and as new application fields of remote controls, wireless personal computers and POS are available.
It is also expected to be applied to the field of data transmission such as application to systems.

The remote control signal using such infrared light generally has a different carrier, transmission format, bit structure, etc. between manufacturers and products, and if the same remote control signal is received by a device of another manufacturer or a different product. However, it does not malfunction. FIG. 5 shows a schematic configuration example of a remote control system as a transmission / reception device for spatially transmitting a remote control signal.

First, the transmitting side is composed of a transmitting IC 1 for coding control contents and an infrared LED 3 for converting a signal coded by the transmitting IC 1 and sending out an optical signal 2. The receiving side includes a pin photo diode 4 for converting the optical signal 2 into an electric signal, and a reception preamplifier IC 5 for amplifying, detecting, and shaping the electric signal of the electric signal converted by the pin photo diode 4. , A microcomputer 6 for processing a signal whose waveform has been shaped by the reception preamplifier IC 5. FIG. 6 shows an example of a carrier waveform in which blinking light emission of the infrared LED used in the remote control system is used as a carrier. Here, the carrier frequency is 38 kHz, and the light emission period of 8.77 μs and the non-light emission period of 26.3 μs are one cycle, and this constitutes one transmission unit continuously for at least 0.56 ms. Then, a signal as shown in the remote controller output waveform example of FIG. 5 is formed.

As shown in the waveform example of the remote control output signal shown in FIG. 7, the transmission code is composed of a reader code 7, a 16-bit custom code 8 and an 8-bit data code 9, and the data code is also a reverse code. To send
One transmission is composed of 32 bits.

The reader code 7 is composed of a carrier waveform of 9 ms and an OFF waveform of 4.5 ms, and is used as a code reader that follows. Accordingly, when the reception is configured by the microcomputer, it is possible to effectively use the time relationship between the reception detection and other processing. The code adopts the PPM (pulse position modulation) method, and distinguishes "1" and "0" by the time between pulses. Since each code is composed of 8 bits and the reverse code is transmitted at the same time, it is possible to construct a system with very few malfunctions.

In audio equipment, products that spatially transmit voice signals other than normal control signals by analog modulation (FM modulation) using infrared light have been introduced.
The levels are NR = 60 dB and THD (distortion) = 1%, and the levels of small speaker drive and headphones are the usage limits.

On the other hand, by transmitting voice using "optical digital space transmission" utilizing infrared light, SNR =
A product that realizes high sound quality transmission of 60 dB, THD (distortion) = 0.03%, and frequency characteristics of 20 Hz to 20 kHz ± 1/2 dB has already been commercialized. (See "Electronics Life", 1991 May, p. 100.)

[0011]

However, in the above-described conventional space transmission system using the inexpensive infrared emitting LED, it takes a sufficient time to transmit a large capacity information signal such as a natural image. This is possible if necessary, but practically, the time required for transfer becomes a problem both when the current transfer rate is improved and when the image information is highly efficient coded and compressed.

In the case of compressing a binary image for spatial transmission, decoding is impossible if the transmission path is interrupted even during transmission, particularly when MH / MR coding is used. It was

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a transmission / reception device that shortens the transfer time for spatially transmitting data such as image information and reliably transfers the data without being affected by the interruption of the transmission path.

[0014]

In order to achieve the above object, the present invention provides a compression means for compression-encoding image information, and a division means for dividing the data compression-encoded by the compression means into a plurality of areas. Transmitting means for simultaneously transmitting the data divided into respective areas by the dividing means by remote control signals of different carrier waves or wavelengths,
Receiving means for simultaneously receiving remote control signals having different carrier waves or wavelengths, synthesizing means for extracting and synthesizing remote control signals having the same carrier wave or wavelength from the remote control signals simultaneously received by the receiving means, and the synthesizing means. Provided is a transmission / reception device including a decoding means for decompressing data synthesized by.

[0015]

In the transmitting / receiving apparatus having the above-described structure, the image data is DCT-encoded, quantized, and then divided, and each is converted into a digital signal in a transmission format in which the carrier frequency is different and spatial transmission is possible. Each digital signal blinks and emits an infrared LED at a clock frequency equal to each carrier frequency, and a remote control signal is transmitted. The received remote control signal is subjected to current-voltage conversion, separated into a predetermined band, and subjected to peak detection / integration to remove noise, and waveform-shaped into a digital signal in the above-mentioned spatially transmittable format having different carrier frequencies. It Then, predetermined image processing is performed and decoding processing is performed on the original image signal.

[0016]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows a configuration of a transmitting / receiving apparatus as a first embodiment according to the present invention, which will be described. Here, the image data used in the present embodiment is exemplified by a color still image captured by an electronic still camera or the like.

In this transmission / reception apparatus, first, the captured image data is subjected to orthogonal transform coding (DCT coding) by the DCT section 11 to generate DCT coefficients. A quantizer 12 is provided at the output end of the DCT unit 11, the DCT coefficient is quantized, and further divided by a data region dividing unit 13 into a predetermined transmittable data region.

The data of each area divided by the data area dividing unit 13 has a carrier frequency different from each other by the transmission encoding units 14a, 14b, 14c provided in the next stage, and the digital data of the transmission format capable of spatial transmission. Converted to a signal.

The transmission coding units 14a, 14b, 14c
Are LED drive circuits 15a, 15b, 15c, respectively.
And the infrared LEDs 16a, 16b, 16 at the clock frequency
c is provided, and each digital signal flashes and emits at a clock frequency equal to each carrier frequency.

The blinking light emission (remote control signal) is received by the plurality of photodiodes 17a, 17b, 17c, input to the current / voltage converters 18a, 18b, 18c, and converted into a current / voltage signal. ..

The current-voltage converters 18a, 18b, 18
c are provided with preamplifiers 19a, 19b and 19c, respectively, and after amplifying the converted current / voltage signals, band-pass filters 20a, 20b and 20c are used to center each carrier wave in a predetermined frequency band. Pass each signal.

Next, the peak detection / integrators 21a, 21b,
Using 21c, continuous noise is discriminated by peak detection from each current / voltage signal in this predetermined band, and sporadic noise is discriminated by integration to eliminate noise. Each of the current / voltage signals from which noise has been removed in this way is processed by the waveform shaping section 22.
Waveforms are shaped by a, 22b, and 22c into digital signals in the above-described formats in which the carrier frequencies are different and which can be transmitted spatially.

Transmission decoding sections 23a, 23b, 23c are provided at the next stage of the waveform shaping sections 22a, 22b, 22c.
The waveform-shaped digital signals of the transmission format are converted into the data of the area before the transmission format conversion and then combined by the data area combining unit 24. The composite data from the data area composition unit 24 is inversely quantized by the inverse quantization unit 25 and reconverted into DCT coefficients. The DCT coefficient obtained by the inverse quantizer 25 is inverse DCT by the inverse DCT 26 to decode the original image signal. The operation of the transmitter / receiver configured as above will be described.

The input image data is, for example, 8 × 8.
DCT unit 1 for all blocks with 1 pixel
DCT coding is performed by 1 to obtain 64 DCT coefficients for each block.

The DCT coefficient for each block is quantized while being zigzag scanned by the quantizer 12. This quantization yields 64 quantized DCT coefficients for each block.

The quantized DCT coefficients of the 64 blocks obtained by the quantizer 12 are zigzag scanned by the data area divider 13 for each block, and for example, a block group (from the first block) 21st), b
It is divided into a plurality of blocks, such as a block group (22nd to 42nd) and a c block group (43rd to 64th).

The DCT coefficients of the block group a are transmitted by the transmission encoding unit 14a, and the DCT coefficients of the block group b are transmitted by the transmission encoding unit 14b. By the transmission encoding unit 14c,
It is converted into a digital signal in a transmission format capable of spatial transmission using different carrier frequencies. here,
Any transmission format may be used as long as it can perform infrared light spatial transmission.

For example, the carrier waveform as shown in FIG. 6 and the carrier waveform as shown in FIG. 7 are composed of a synchronizing part and a pulse part in which a plurality of clocks are continuous, and the code information is the time between pulses. Therefore, a pulse position modulation method that distinguishes “1” from “0” may be used. Further, an error correction code section may be added. In this case, the frequency of the carrier wave waveform shown in FIG.
14b and 14c are different.

The transmission coding units 14a, 14b, 14c
Each digital signal transmission-encoded by the above drives the LED drive circuits 15a, 15b, 15c at a clock frequency equal to the individual carrier frequency. The LED driving circuits 15a, 15b, 15c are the infrared LEDs 16
A, 16b, and 16c are made to blink and light according to the frequency of the carrier waveform, and remote control signals of different carrier waves are transmitted.

On the receiving side, each remote control signal transmitted is the photodiode 1 under the conditions in which it is used and the distance at which the remote control signal of an ordinary infrared LED reaches.
The light is simultaneously received by 7a, 17b, 17c, and converted into a current / voltage signal by the current / voltage converters 18a, 18b, 18c.

The respective current / voltage signals are supplied to the preamplifier 19
band pass filters 20a, 20b, 2 which are amplified by a, 19b, 19c and pass a frequency band having a sufficient peak characteristic as the center wave number of each carrier frequency.
A current / voltage signal obtained by amplitude-modulating the carrier of the center frequency is taken out by 0c.

Then, each of the extracted current / voltage signals is
The peak detection / integrators 21a, 21b, and 21c change the detection sensitivities to remove external optical noise and continuous noise including remote control signals due to other carriers, and also to eliminate single noise by integrating.

The current / voltage signals from which the noise and the like have been removed are waveform-shaped by the waveform shaping units 22a, 22b and 22c, and digital signals transmitted by different carrier waves are obtained.

The respective digital signals are digital signals converted by the transmission encoding units 14a, 14b, 14c according to the transmission format, but before being converted into the transmission format by the transmission decoding units 23a, 23b, 23c. The original digital signal is obtained, and quantized DC of all blocks of the a block group is obtained for each block.
Similarly, the T coefficient is transmitted by the transmission decoding unit 23a, the quantized DCT coefficients of all blocks of the b block group are transmitted by the transmission decoding unit 23b, and the quantized DCT coefficients of all blocks of the c block group are transmitted by the transmission decoding unit 23c. can get.
By synthesizing these DCT coefficients by the data area synthesizing unit 24, quantized DCT coefficients of all blocks from the first block to the 64th block are obtained. In this quantized DCT coefficient, for all blocks,
The inverse quantization unit 25 performs inverse quantization to convert the original DCT coefficient before quantization.

Further, the original DCT coefficients obtained for all blocks are inversely DCTed by the inverse DCT unit 26,
Obtain the input image with the redundant components removed. Where the first
In the embodiment, the LED 17 and the current-voltage converter 1 are included in the receiver.
8. A plurality of preamplifiers 20 are used, but it is also possible to use one each. In addition, the current-voltage converter is
It can be realized by using one resistor.

In the present embodiment, the spatial transmission in parallel is realized by changing the carrier waves of the infrared LED 16, respectively. However, the wavelength of the light emitting element may be widened and visible light may be used. However, filters having different colors may be provided in the transmitter and the receiver.

DCT is used as compression encoding of image information.
Although the coding is used, other orthogonal transform coding or compression coding may be used or may not be compressed. Further, the image information to be transmitted is not limited to a color still image, and may be a monochrome image, a moving image or a stereoscopic image using a compression encoding such as MPEG or other encoding, a binary image or a halftone image.

Next, FIG. 2 shows, as a second embodiment, a concrete application example of the first embodiment shown in FIG. The second embodiment is a transmission / reception device (remote control device) for controlling an image pickup recording device such as an electronic still camera with a zoom function or an automatic focusing function using a conventional remote control device, and the image pickup recording device is a color still image. Is a transmission / reception device having a feature of spatially transmitting to a remote control device.

As shown in FIG. 2 (a), this transmission / reception device is a remote control device 34 which is composed of a liquid crystal display section 31 and a transparent touch panel 32 and which can be attached to an image recording device 33 such as an electronic still camera.

In the remote control device 34, an infrared light emitting portion 35 and an infrared light receiving portion 36 are provided on the front surface. In the imaging recording device 33, a plurality of infrared light emitting parts 3 are provided on the front side.
7, an infrared light receiving section 38, and an imaging section 39 are provided. Using the remote control device 34, the imaging recording device 3
An operation for remotely operating 3 for photographing will be described. As shown in FIG. 2B, the image pickup recording device 33 and the remote control device 34 are installed at an arbitrary distance within a communicable distance.

For example, a control signal 40 for moving the image picked up by the image pickup section 39 to the liquid crystal display section 31.
However, a predetermined operation is performed on the touch panel 32 of the remote control device 34, and a control signal based on the input of position information is transmitted from the infrared light emitting unit 35 toward the imaging recording device 33.

The control signal 40 is sent to the infrared light receiving section 3
The image pickup recording device 33 received in 8 compression-codes the image picked up by the image pickup section 39, and outputs compressed image information divided into a plurality of bands from a plurality of infrared light emitting sections 37 to remote control signals of different carrier waves. Is transmitted as image information 41 to the remote controller 34 at the same time.

Upon receiving the image information 41, the remote control device 34 extracts and combines the remote control signals having different carrier waves, respectively, and performs a decoding process. The result is displayed on the liquid crystal display unit 31.

As shown in FIG. 2C, the remote control device 34 can transmit a control signal by inputting position information on the touch panel 32, and an image by the image pickup unit 39 is displayed on the liquid crystal display unit 31. In addition to the information display, a frame display 42, a zoom-in switch display 43, a zoom-out switch display 44, an imaging switch display 45, and other characters can be displayed, and various remote operations can be performed while monitoring. The zoom-in switch display 43, the zoom-out switch display 44, and the image-capturing switch display 45 can be used to control zooming, shutter operation, and the like, and the desired frame position can be specified directly on the touch panel 32. It is also possible to control such as to fit within the frame.

Further, Japanese Patent Laid-Open No. 2-2759 by the present applicant
It is also possible to focus on the point by designating an arbitrary point of the image being picked up displayed on the touch panel 32 by using the technique of the automatic focusing device described in Japanese Patent No. 16 publication. Is. Next, FIG. 3 shows a configuration of a transmitting / receiving apparatus as a third embodiment according to the present invention, which will be described.

In this transmission / reception apparatus, first, the binary image data picked up by a scanner or the like is processed by the image compression unit 5.
With 0, the data is encoded after being subjected to MH encoding or the like and then compressed to generate compressed data.

At the output end of the image compression unit 50, a reading unit 51 for reading the compressed data without delay, a T1 delay reading unit 52a for reading with a delay of T1 time, and T2.
A T2-delayed read section 52b which is read with a time delay is provided, and each data read by these read sections is
The transmission encoding units 53a, 53b, and 53c convert the carrier frequency into a digital signal having a transmission format that allows different spatial transmission.

The transmission coding units 53a, 53b, 53c
The output terminals of the LED drive circuits 54a, 54b, 54c
And infrared LEDs 55a, 55b, 55c are provided, and the digital signal is transmitted as a remote control signal on different carriers by blinking light emission of the infrared LEDs 55a, 55b, 55c at a clock frequency equal to each carrier frequency. The remote control signals of different carrier waves sent by the infrared LEDs 55a, 55b, 55c are received by one photodiode 56.

A current-voltage converter 57 is provided at the output end of the photodiode 56, converts the received remote control signal into a current / voltage signal, and the preamplifier 58 amplifies the converted current / voltage signal. It

At the output end of the preamplifier 58, band pass filters 59a, 59b and 59c for passing a predetermined frequency band with each carrier as a center frequency are provided to pass the amplified current / voltage signal.

The band pass filters 59a, 59
The peak detection / integrators 60a, 6 are provided at the respective output terminals of b, 59c.
0b and 60c are provided, continuous noise is discriminated from the respective current / voltage signals that have passed through peak detection, and sporadic noise is discriminated by integration to remove noise.

The peak detection / integrators 60a, 60b,
The waveform shaping units 61a, 61b, 61 are provided at the respective output ends of the 60c.
c, and further provided with transmission decoding units 62a, 62b, 62c for waveform-shaping the noise-removed current / voltage signals into digital signals of the above-mentioned spatially transmittable formats having different carrier frequencies, respectively, before conversion of the transmission format. Image data of each area.

A data complementing unit 63 is provided at the output ends of the transmission / decoding units 62a, 62b and 62c, and if there is a missing portion in the converted image data, the data is referred to and complemented. The image data complemented by the complementing unit 63 is expanded by the image decoding unit 64 and reproduced and output as a binary image signal. Next, the operation of the transmitting / receiving apparatus configured as above will be described.

First, for the input binary image signal,
The compression encoding unit 50 is an optimal encoding for compression of a binary image,
For example, MH (Modified Huffman) encoding is performed.
Since this is a variable length encoding, it is a compression method that cannot be decoded as it is if interrupted during data transmission.

Next, the compressed data compressed by the image compression unit 50 is immediately read by the reading unit 51, and converted by the transmission coding 53 into a digital signal in a transmission format capable of spatial transmission. The compressed data is read by the T1 delay reading section 52 after being delayed by T1 time, and converted into a digital signal in a transmission format which allows spatial transmission using a carrier frequency different from that of the transmission encoding section 53 by the transmission encoding section 53b. The converted data is further converted into T by the T2 delay reading unit 52c.
It is delayed for 2 hours, read out, and converted by the transmission coding unit 53c into a digital signal in a transmission format capable of spatial transmission using a carrier frequency different from those of the transmission coding units 53a and 53b.

The digital signals thus transmission-encoded drive the LED drive circuits 54a, 54b, 54c at a clock frequency equal to each carrier frequency, and the infrared LEDs 55a, 55b, 55c receive no delay. Three types of remote control signals are transmitted: a remote control signal, a remote control signal with T1 time delay, and a remote control signal with T2 time delay.

Here, the transmission format is one capable of spatial transmission with infrared light, and has the carrier wave waveform shown in FIG.
The carrier waveform shown in FIG. 7 is composed of a synchronizing part and a pulse part which are continuous for a plurality of clocks. The code information may use a pulse position modulation method that distinguishes "1" and "0" depending on the time between pulses, but it is a packet data format and an error correction code is added to each packet. There must be. Also in this case, the frequencies of the carrier wave waveforms as shown in FIG. 6 have the respective transmission coding units 53a, 53b, 53.
Different in c.

On the receiving side, a normal infrared LE is used.
Under the condition that the remote control signal of D is used within a reachable distance, the photo LED 56 receives the transmitted remote control signal, is converted into a current / voltage signal by the current / voltage conversion unit 57, and is amplified by the preamplifier 58. To be done.

From each of the amplified current / voltage signals, a band-pass filter 59a, 59b, 59c extracts a current / voltage signal obtained by amplitude-modulating a carrier having a different center frequency.

By changing the detection sensitivities of the peak detection / integrators 60a, 60b and 60c, the extracted current / voltage signals are removed of external light noise and continuous noise including remote control signals due to other carrier waves. The one-shot noise is removed by integrating.

The peak detector / integrators 60a, 60b,
The respective current / voltage signals from which the continuous noise and the single noise have been removed by the 60c are respectively shaped into the waveforms 61a and 61a.
The waveform is shaped by b and 61c, and the digital signals transmitted by different carrier waves are obtained.

The respective digital signals obtained by the waveform shaping sections 61a, 61b, 61c are converted into a transmission format such as a packet data format with an error correction code by the transmission encoding sections 53a, 53b, 53c. The respective digital signals are obtained, and thereafter, the respective packets are error-corrected by the respective transmission / decoding units 62a, 62b, 62c, and the digital signals before being converted into the transmission format are obtained.

Here, some of the packets blocked in the data transmission path are out of the error correction range. However, since the same data is transmitted with the carrier changed by shifting the time, the data complementing unit 63 can complement the compressed data by referring to each of the transmission decoding units 62a, 62b, 62c. Becomes
The compressed data complemented by the data complementing unit 63 is
The image is decoded by the image decoding unit 64 and reproduced and output as the original binary image. Although only three types of delay time and carrier frequency are considered here, any number of types may be considered and any number of units may be added. Further, although one each of the photo LED 56, the current-voltage converter 57, and the preamplifier 58 is used, naturally, only the types of carrier waves may be prepared.

Furthermore, in the second embodiment, the binary image is particularly limited, but it may also be used for a color still image or a moving image, and the effect can be expected when used in combination with the first embodiment. Next, FIG. 4 shows an appearance of an application example of a transmitting / receiving apparatus as a fourth embodiment according to the present invention.

This transmission / reception device is applied to a device that captures characters and drawings drawn on a blackboard or the like as an image with a small camera, spatially transmits them, and projects them on a portable television or the like.

That is, the characters written on the blackboard 65 are picked up by the handheld input device 66, the picked-up image is binarized and compressed, and the plurality of light emitting parts 67a, 67b, 67c respectively cause different delayed carrier waves. Send a remote control signal. The light receiving unit 69 of the low cost printer 68 receives the remote control signal, performs the error correction and the complementary processing,
After the decryption processing, this is displayed on the liquid crystal monitor 70 or recorded in the FD file 71.

As described above, according to the present invention, it becomes possible to transmit an image signal having an enormous amount of data in a shorter time than before by using an inexpensive infrared emitting LED.

Further, depending on the data division method, even if the transmission is interrupted during the spatial transmission of the data, it is possible to minimize the damage due to the loss of the data. Data that cannot be returned by conventional error correction alone is also supplemented. Further, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications and applications can be made without departing from the scope of the invention.

[0070]

As described above in detail, according to the present invention, the transmission time for spatially transmitting data such as image information is shortened, and the transmission / reception device for surely transmitting the data without being affected by the interruption of the transmission path. Can be provided.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a transmission / reception device as a first embodiment according to the present invention.

FIG. 2 shows a first embodiment shown in FIG. 1 as a second embodiment.
It is a figure which shows the specific application example of an Example.

FIG. 3 is a diagram showing a configuration of a transmission / reception device as a third embodiment according to the present invention.

FIG. 4 shows an appearance of an application example of a transmission / reception apparatus as a fourth embodiment according to the present invention.

FIG. 5 is a diagram showing a schematic configuration example of a conventional transmitter / receiver for spatially transmitting a remote control signal.

6 is a diagram showing an example of carrier waveforms used in the transmitting / receiving apparatus shown in FIG.

FIG. 7 is a diagram showing a waveform example of a remote control output signal.

[Explanation of symbols]

1 ... Transmission IC, 2 ... Optical signal, 3, 16a, 16b, 1
6c, 55a, 55b, 55c ... Infrared LED, 4 ... Pin photo diode, 5 ... Reception preamplifier IC, 6
... Microcomputer, 7 ... Reader code, 8 ... Custom code, 9 ... Data code, 11 ... DCT section, 12
... Quantization unit, 13 ... Data area division unit, 14a, 14
b, 14c, 53a, 53b, 53c ... Transmission coding unit,
15a, 15b, 15c, 54a, 54b, 54c ... L
ED drive circuit, 17a, 17b, 17c ... Photo diode, 18a, 18b, 18c, 57 ... Current-voltage converter, 19a, 19b, 19c, 58 ... Preamplifier, 20
a, 20b, 20c, 59a, 59b, 59c ... Band pass filter, 21a, 21b, 21c, 60a,
60b, 60c ... Peak detection / integration section, 22a, 22
b, 22c, 61a, 61b, 61c ... Waveform shaping section, 2
3a, 23b, 23c, 62a, 62b, 62c ... Transmission decoding unit, 24 ... Data area synthesizing unit, 25 ... Dequantization unit,
26 ... Inverse DCT part, 31 ... Liquid crystal display part, 32 ... Transparent touch panel, 33 ... Imaging recording device, 34 ... Remote control device,
35 ... Infrared light emitting part, 36 ... Infrared light receiving part, 37 ... Infrared light emitting part, 38 ... Infrared light receiving part, 39 ... Imaging part, 40 ... Control signal, 41 ... Image information, 42 ... Frame display , 43 ...
Zoom-in switch display, 44 ... Zoom-out switch display, 45 ... Imaging switch display, 50 ... Image compression unit, 5
1 ... reading unit, 52a ... T1 delay reading unit, 52b ... T2
Delay reading unit, 56 ... Photo diode, 63 ... Data complementing unit, 64 ... Image decoding unit, 65 ... Blackboard, 66 ... Handheld input device, 67a, 67b, 67c ... Light emitting unit, 6
8 ... Low cost printer, 69 ... Light receiving part, 70 ... Liquid crystal monitor, 71 ... FD file.

Claims (1)

[Claims] 1. A compression means for compression-encoding image information, a division means for dividing the data compression-encoded by the compression means into a plurality of areas, and the data divided into each area by the division means. Transmitting means for simultaneously transmitting remote control signals of different carrier waves or wavelengths, receiving means for simultaneously receiving remote control signals of different carrier waves or wavelengths, and carrier waves of the remote control signals simultaneously received by the receiving means. Alternatively, the transmitting / receiving apparatus is provided with a synthesizing unit for extracting and synthesizing remote control signals having the same wavelength, and a decoding unit for decompressing the data synthesized by the synthesizing unit.