JP3175655B2 - Digital wireless communication device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital radio communication device such as a personal handyphone system (PHS).

[0002]

2. Description of the Related Art In recent years, there has been a rapid demand for portable telephones at any time and from any place due to a desire to use the telephone. In particular, demand for PHS capable of digital wireless communication has been increasing significantly.

In recent years, similarly, at any time,
Many people also carry portable audio devices because of the desire to listen to music, learn languages, etc., in any place. It is starting to go out very quickly. This is due to the feature that the mini-disc is randomly accessible and recordable, and users can freely edit and record and play their favorite music, and record the contents of meetings and the like. It is used in various forms, such as rubs.

[0004]

As described above, PHS,
Many mini-disc players / recorders are carried by many people, but there is no integrated device. That is, both users have to carry their respective devices, which is very troublesome.

Accordingly, the present invention provides a digital wireless communication device having a new and effective function by integrating the functions and features of each device with the functions and features of the other device while integrating them. The purpose is to provide.

[0006]

According to a first aspect of the present invention, there is provided a digital wireless communication apparatus, wherein a digital audio recording medium is detachable and a mounted digital audio recording medium can be reproduced in the digital wireless communication apparatus. Along with
The reproduced digital audio data is wirelessly transmitted by a digital method.

According to a second aspect of the present invention, in the digital wireless communication apparatus according to the first aspect, the reproduced digital voice data and the voice voice data of the transmitter are mixed and transmitted.

According to a third aspect of the present invention, in the digital wireless communication apparatus according to the first or second aspect, the reproduced digital voice data and the received voice data are mixed and reproduced.

According to a fourth aspect of the present invention, in the digital wireless communication apparatus, the digital audio recording medium is detachable, the attached digital audio recording medium is recordable, and the received digital audio data is recorded on the digital audio recording medium. It is characterized by doing.

According to a fifth aspect of the present invention, in the digital wireless communication apparatus according to the fourth aspect, the received digital voice data and
It is characterized in that it mixes and records the transmission voice data of the transmitter.

According to a sixth aspect of the present invention, in the digital wireless communication apparatus according to the first, second, third, fourth or fifth aspect, the digital audio recording medium is a mini disk.

According to a seventh aspect of the present invention, in the digital wireless communication apparatus, the mini disk is detachable, the mounted mini disk can be reproduced and recorded, and the reproduced compressed digital audio data is wirelessly communicated. I do.

[0013]

According to the first aspect of the present invention, in the digital wireless communication apparatus, the digital audio recording medium is detachable, and the mounted digital audio recording medium can be reproduced.
The reproduced digital audio data is wirelessly transmitted by a digital method.

Therefore, for example, digital audio data such as music data, message data, conference proceedings data, etc., which are recorded in advance on a digital recording medium, can be transmitted to another device capable of digital radio communication. Information on a recording medium can be easily sent without sending the medium. When the same information is sent to many people, this can be performed more effectively. Also, this processing can be easily performed without complicated processing such as analog conversion because the recording data of the recording medium is digital data and the digital data is wirelessly transmitted by a digital method.

According to a second aspect of the present invention, in the digital wireless communication apparatus according to the first aspect, the reproduced digital voice data and the voice voice data of the transmitter are mixed and transmitted.

Therefore, when sending digital voice data to the other party, a normal telephone call can be performed.

According to a third aspect of the present invention, in the digital wireless communication apparatus according to the first or second aspect, the reproduced digital voice data and the received voice data are mixed and reproduced.

Therefore, for example, when digital audio data is music data, the music data can be reproduced even during a call, a BGM effect by the music data can be provided, and the transmitted voice data can be mixed. In this case, even if the other party does not have a similar function, the conversation between both parties can be given a BGM effect by music data.

According to a fourth aspect of the present invention, in the digital wireless communication apparatus, the digital audio recording medium is detachable, the attached digital audio recording medium is recordable, and the received digital audio data is recorded on the digital audio recording medium. It is characterized by doing.

Therefore, the contents of the call can be recorded on the digital voice recording medium, and the memo of the received contents can be automatically created. Also, when used for a music data telephone transmission service, this music information can be easily recorded. Such processing can be easily performed without complicated processing such as analog conversion because the received data is digital data and is digitally recorded.

According to a fifth aspect of the present invention, in the digital wireless communication apparatus according to the fourth aspect, the received digital audio data and
It is characterized in that it mixes and records the transmission voice data of the transmitter.

Therefore, when making a call, not only the content of the received call,
The contents of the transmission can be recorded together, and the minutes of the call can be automatically created. Also, when used for a karaoke data telephone transmission service, the sender can sing along with this data and automatically record a predetermined song with his / her own voice on a digital audio recording medium. it can.

According to a sixth aspect, in the digital wireless communication apparatus according to the first, second, third, fourth or fifth aspect, the digital audio recording medium is a mini disk.

Accordingly, a large amount of data can be reproduced and recorded for communication. Further, at the time of recording, it is easy to edit and update the record information, and it is possible to add an index such as a title to the record information.

According to a seventh aspect of the present invention, in the digital wireless communication apparatus, the mini disk is detachable, the mounted mini disk can be reproduced and recorded, and the reproduced compressed digital audio data is wirelessly communicated. I do.

Therefore, communication with very high quality digital audio data can be performed, dubbing can be easily performed without wiring, and communication is performed with compressed data, so that communication time is shortened.

[0027]

FIG. 1 is a block diagram illustrating an embodiment of a digital wireless communication apparatus according to the present invention. In this embodiment, the digital wireless communication device includes a recording / reproducing unit 2 on which a mini disk (hereinafter, MD) 1 is detachably mounted and which performs recording and reproduction. The recording / reproducing unit is connected to the RAM controller 4 via the EFM encoder / decoder 3 so as to be able to transmit and receive. The RAM controller 4 is mutually connected to and controls the RAM 5 which is generally called a shock-proof memory. The RAM controller 4 is connected to the signal control unit 7 directly and via the ATRAC encoder / decoder 6 so as to be able to transmit and receive. In addition, the EFM encoder / decoder 3
Performs modulation (EFM modulation) for recording / reproduction on MD, and ATRAC encoder / decoder
Digital audio data is compressed to 1/5 for encoding, and is decoded.

The digital radio communication apparatus includes an antenna 8 for transmitting and receiving digital radio communication data, a radio unit 9 including an RF for transmitting and receiving to and from the antenna 8, and a TDMA circuit 12 for controlling time division multiple access. . TDMA
Data from the circuit 12 is transmitted to the radio unit 9 through the modulator 10.
And the data from the radio unit 9 is transmitted to the TDMA circuit 12 via the demodulator 11. TDMA circuit 12
Is connected to the additional information processing unit 13 so that transmission and reception are possible. The additional information processing unit 13 adds an identification code and an error detection code to the transmission data of the compressed digital audio data, detects the identification code to the transmission data, and detects the error detection code to the received compressed digital audio data. , Copy bit, and category code. The additional information processing unit 13 is connected to the signal control unit 7 directly and via the ADPCM circuit 14 so as to be able to transmit and receive. Here, the ADPCM circuit 14 performs adaptive differential pulse code modulation.

The signal controller 7 includes a speaker 16 via a DA converter 15, a microphone 18 via an AD converter,
Headphones 20 are connected via converter 19. The signal control unit 7 performs various switching of the connected signal paths, and outputs (decodes) the data output from the ATRAC encoder / decoder 6 or the data output from the ADPCM circuit 14 and the AD conversion output of the microphone 18. And
The data output from the ATRAC encoder / decoder 6 and the data output from the ADPCM circuit 14 are
Means for mixing at a predetermined mixing ratio (1: 1 in this embodiment) is included.

EFM encoder / decoder 3, RAM controller 4, ATRAC encoder / decoder 6, T
DMA circuit 12, additional information processing unit 13, signal control unit 7
Are mutually connected to and controlled by the CPU 21. Further, the digital wireless communication device includes an operation unit 22,
A display unit 23 is provided, and these are connected to the CPU 21.

Here, embodiments of each mode of the digital wireless communication apparatus will be described.

In the case of normal MD recording / reproduction, MD1 is
It is operated by the MD operation keys 32 shown in FIG. Describing the signal path of recording, the sound extracted by the microphone 16 is DA-converted and output to the signal control unit 7. In this case, since the recording is normal MD recording, the CPU 21 controls the signal control unit 7, and the audio data is output to the ATRAC encoder / decoder 6. ATRAC encoder /
Output data from the decoder 6 is processed in the order of the RAM controller 4, the EFM encoder / decoder 3, and the recording / reproducing unit 2, and is recorded on the MD1. In the case of reproduction, the reproduction data of the MD 1 by the recording / reproduction unit 2 is transmitted to the EFM encoder / decoder 3, the RAM controller 4, the ATRA
The signals are processed in the order of the C encoder / decoder 6 and input to the signal control unit 7. In this case, since normal MD reproduction is performed, the CPU 21 controls the signal control unit 7, and the input data is output to the headphones 20 via the DA converter 19, and is reproduced.

By the way, M of this digital radio communication device
In the D mode, processing such as reproduction of indexed arbitrary data (for example, music), program reproduction, title input, and the like can be performed. That is, as shown in FIG.
The MD mode is selected by the MD / PHS switching key 33,
By operating the numeric keys 31, arbitrary data can be reproduced, the program mode can be selected by the program keys 30, and the program can be reproduced by programming with the numeric keys 31 or the like. The title can also be input by selecting the MD mode with the MD / PHS switching key 33 and operating the program key 30 and the numeric keys 31.

As described above, in the digital wireless communication apparatus of the present invention, normal MD recording and reproduction can be performed, and conversation recording and music MD reproduction can be performed.

Next, a call in a normal telephone mode by the PHS will be described. When making a call from this digital wireless communication device, the user operates the call key 24 shown in FIG. 2 and then inputs a telephone number with the numeric keys 31 and presses the send key 34 as in the case of a normal PHS. I do.
At this time, the PHS is selected by the MD / PHS switching key 33. Then, when the other party receives it,
The call starts. In the case of transmission, the call key 24 may be operated after a ringing tone.

A description will be given of a signal path in the case of a call state by such processing.
Is converted from digital to analog and the signal control unit 7
Is output to In this case, because it is a normal phone call,
The CPU 21 controls the signal control unit 7, and the audio data is output to the ADPCM circuit 14. ADPCM circuit 14
Is output to the additional information processing unit 13. The additional information processing unit 13 is controlled by the CPU 21 so as not to perform any processing since it is a normal telephone transmission, and outputs input data to the TDMA circuit 12. Then, data processed in the order of the TDMA circuit 12, the modulator 10, and the radio unit 9 is transmitted from the antenna 8.

In the case of reception, data received by the antenna 8 is processed in the order of the radio unit 9, the demodulator 11, and the TDMA circuit 12, and then input to the additional information processing unit 13. The additional information processing unit 13 detects the identification symbol, but does not detect it in this case, and thus outputs the input data to the ADPCM circuit 14 under the control of the CPU 21. ADPCM circuit 14 outputs the signal to signal control unit 7. In this case, since the transmission is a normal telephone transmission, the CPU 21 controls the signal control unit 7, and the input data is output to the speaker via the DA converter 15.

As described above, the digital radio communication device of the present invention can perform normal telephone transmission and reception.

Next, transmission of the MD record information in the telephone mode, which is one of the features of the digital wireless communication apparatus, will be described. In this case, as described above, the telephone call is made in the normal telephone mode, and when the other party receives a call, the MD call transmission key 28 shown in FIG. 2 is operated.
The operation of the call record key 26 is effective until the release key 35 shown in FIG. 2 is operated. To explain the signal path in this case, the MD 1 is reproduced by the recording / reproducing unit 2, processed in the order of the EFM encoder / decoder 3, the RAM controller 4, and the ATRAC encoder / decoder 6, and input to the signal control unit 7. You. At this time, in the telephone mode, the transmission voice data, that is, the AD conversion output from the microphone 18 is also input to the signal control unit 7, and these data are mixed. Then, the mixed data is output to the ADPCM circuit 14, and is output from the ADPCM circuit 14 to the additional information processing unit 13. Additional information processing unit 1
In step 3, the CPU 21 controls the CPU 21 not to perform any processing, and outputs input data to the TDMA circuit 12. Then, data processed in the order of the TDMA circuit 12, the modulator 10, and the radio unit 9 is transmitted from the antenna 8. In this case, since the telephone mode is set, the received voice data from the ADPCM circuit 14 is also input to the signal control unit 7, and the MD reproduction data and the received voice data are mixed and It is output from the speaker 16.

In the transmission of the MD recording information in the telephone mode, one of the inputs mixed by the signal control unit 7 can be muted by operating the mute key 29 shown in FIG. That is, the transmission voice data for the MD reproduction data and the MD reproduction data for the reception voice data can be independently muted. In addition, in this digital wireless communication apparatus, the received voice data and the MD reproduction data can be mixed and output from the speaker by reproducing the MD1 during a call in the normal telephone mode. However, in this case, the MD reproduction data is not transmitted.

As described above, in this digital wireless communication apparatus, MD reproduction data can be transmitted in the telephone mode. At this time, this data can be mixed with transmission voice data and reception voice data. it can. Also, in this digital wireless communication apparatus, the above processing is performed by the MD call transmission key 28
, But transmission may be automatically performed when reception of the other party is confirmed.

Next, the recording of the contents of a call in the telephone mode, which is one of the features of this digital wireless communication apparatus, will be described. If you are talking in a normal state,
Both the transmission voice data and the reception voice data are input to the signal control unit 7. At this time, the call record key 2 shown in FIG.
6, the signal control unit 7 outputs a mixed output of these data to the ATRAC encoder / decoder 6, and outputs the mixed output to the ATRAC encoder / decoder 6, the RAM controller 4, the EFM encoder / decoder 3, The data is processed in the order of the recording / reproducing unit 2 and recorded on the MD 1. That is, the contents of the call are recorded in MD1. Further, at this time, by operating the mute switch 29, the transmission voice data can be muted in the signal control section 7, and only the reception voice data can be recorded. Of course, in these cases, it is needless to say that a normal call is being made. The operation of the call record key 26 is effective until the release key 35 shown in FIG. 2 is operated.

As described above, in the digital wireless communication apparatus of the present invention, the contents of a call can be recorded on the MD1.

Next, one of the features of the digital wireless communication apparatus is the transmission of MD recording information as compressed audio data,
Reception and recording will be described. In this case, the processing is different from the call in the normal telephone mode. That is, transmission is performed by operating the MD compression transmission key 27 shown in FIG. More specifically, first, the MD data to be transmitted is programmed by the key operation described above, and the MD compression transmission key 27 is operated. Then M
The PHS is selected by the D / PHS switching key 33, the telephone number is input by the numeric keys 31, and the transmission is performed by pressing the transmission key 34. Then, when the reception of the other party is confirmed, the recording / reproducing unit 2 starts reproducing the MD1. Via the EFM encoder / decoder 3, RA
The compressed audio data output from the M controller 4 is directly output to the signal control unit 7, and the signal control unit 7
As a result, the data is directly output to the additional information processing unit 13. The additional information processing unit 13 adds an identification code and an error detection code to the compressed audio data. The compressed audio data to which these are added are processed in the order of the TDMA circuit 12, the modulator 10, and the radio unit 9, and transmitted from the antenna 8.

The reception and recording of the compressed audio data will be described. The signal is received by the antenna 8, the radio unit 9, the demodulator 1
1. The compressed voice data processed in the order of the TDMA circuit 12 is detected by the additional information processing unit 13 as the compressed voice data by the identification code, and a ringing tone indicating that it is received is output from the speaker 16. . The receiver operates the compressed data recording key 25 shown in FIG. 2 if the received compressed voice data is to be recorded on the MD1 by the ringing tone. This operation is effective until the release key 35 shown in FIG. 2 is operated. The additional information processing unit 13 detects an error code of the received compressed audio data, and if there is an error, the CPU 21 sends a retransmission request signal to the sender. At this time, on the transmitting side receiving the retransmission request signal,
Retransmit the erroneous compressed audio data. The processing on the transmitting side is performed by utilizing or re-accessing the shock proof memory according to the transfer rate. Here, when an error occurs, the data is retransmitted because the transmitted / received data is compressed audio data and error correction cannot be performed by interpolation or the like. If there is no error, the CPU 21 determines whether digital copying is possible based on the copy bit and the category code detected by the additional information processing unit 13 at the same time. If this is possible, the compressed audio data is sent to the additional information processing unit 13, the signal control unit 7,
The data is transmitted in the order of the RAM controller 4, the EFM encoder / decoder 3, and the recording / reproducing unit 2, and is recorded on the MD1. If digital copy recording is not possible, recording is not performed.
A signal indicating that recording is not possible is transmitted to the transmitting side.

As described above, this digital wireless communication apparatus can transmit compressed audio data, and can also receive and record compressed audio data.

Next, the main operation of the CPU of the digital wireless communication apparatus according to one embodiment of the present invention will be described with reference to the flowcharts shown in FIGS.

In this digital radio communication device, as shown in FIG. 3, upon reception as in step S301, it is determined in step S303 whether or not the MD1 is currently operating. If not, the process proceeds to step S401 in FIG. If it is in operation, it is determined in step S305 whether or not reproduction is in progress. If the reproduction is being performed, the reproduction is stopped in step S307, and the process proceeds to step S401 in FIG. Here, the reproduction is stopped in a later process, and the ringing tone is output to the speaker 16.
In this digital wireless communication device, MD playback is performed by headphones 20,
In this case, the ringing tone may not be heard. Since the call can be made with the speaker 16 and the microphone 18, this ringing tone is transmitted through the headphones 20.
, And the MD reproduction data and the ringing tone may be mixed at a predetermined mixing ratio to obtain a headphone output. It is also conceivable to use headphones and a microphone integrated with each other and use headphones without using a speaker.

If it is determined in step S305 that the MD is not being reproduced, the MD is being recorded.
In step 9, all reception is disabled, and the fact that reception has been performed is recorded. The record of the reception can be confirmed later, but may be displayed on the spot.

As shown in FIG. 4, in step S401, it is determined whether or not the received data is MD compressed audio data. If no, in step S415, a call ringing tone, which is a ringing tone in a normal telephone mode, is output from the speaker 16,
In step S417, it is determined whether the call key 24 has been pressed. When this is pressed, the mode shifts to the call mode. If not, the process returns to step S417,
This judgment is repeated.

If the received data is MD compressed audio data, it is determined in step S405 whether an error has been detected. If an error is detected, retransmission is requested in step S405, and it is determined in step S409 whether retransmission data has been received. If retransmission data has been received, the process returns to step S405. Until the retransmission data is received, a predetermined time is measured in step S411, and after this, the process ends in step S413. Step S
If no error is detected in 405, the process proceeds to step S501 shown in FIG.

As shown in FIG. 5, in step S501, it is determined whether digital copying is possible. If digital copying is possible, it is determined in step S503 whether the compressed data recording key 25 is valid. If it is not valid, it is determined in step S505 whether a predetermined time has elapsed. If it has elapsed, the process ends in step S507, and if it has not elapsed, the process returns to step S503. If valid, it is determined in step S509 whether or not the MD can be recorded. If recordable, the data is recorded in step S511, and the process returns to step S405. If it is determined in step S509 that recording is not possible, an MD exchange message is displayed in step S513, it is determined in step S515 whether or not the MD has been exchanged. Returning to step S405, if the predetermined time has elapsed, the process ends in step S519. If it is determined in step S501 that digital copying is not possible, an error indicating this is displayed in step S521, and step S521 is performed.
In step 523, a recording-disabled signal is transmitted to the transmitting side, and the process ends (step S525).

Next, the operation of the CPU of the digital wireless communication apparatus according to the embodiment of the present invention in the communication mode will be described with reference to FIG. Here, the communication mode refers to a state in which both parties can talk after receiving a call from the other party or after calling from the apparatus according to the telephone mode.

When the communication mode is set in step S601,
In step S603, it is determined whether the MD call transmission key 28 is valid. If this is valid, it is determined in step S605 whether or not the MD can be played back. If the MD can be played back, the MD playback data is transmitted in step S607, and the process proceeds to step S607.
Return to 603. If it is determined that reproduction is impossible, an error message is displayed in step S609, and the process returns to step S603.

If it is determined in step S603 that the key 28 is not valid, it is determined in step S611 whether the call record key 26 is valid. If valid, step S613
To determine whether or not the MD can be recorded.
In step S615, call data is recorded, and in step S6
Return to 03. If it is determined that recording is not possible, step S
After displaying an error in 617, the process returns to step S603.

If it is determined in step S611 that the key 26 is not valid, it is determined in step S619 whether or not the call is to be ended. If not, the process returns to step S603, and if the call is to be ended, the process ends in step S621. .

The compressed data recording key 25, the call recording key 26, the MD compression transmission key 27, the MD communication transmission key 28
Is released (invalidated) by the release key 35, whereby the function of the operating MD is stopped. Also, when the call ends, the call is invalidated and the MD stops.

The embodiment of the present invention has been described in detail based on the embodiment which is considered to be representative of the digital wireless communication apparatus.
Has been described as being recordable and reproducible, but only one of them may be possible, and data mixed mutable by the signal control unit may not be mixed from the beginning, and the digital recording medium is not limited to MD. However, the present invention is not limited to the above-described embodiment, and can be appropriately modified and implemented as long as it has the constituent features described in the above-described claims and has the effects and advantages described in the present invention.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an embodiment of a digital wireless communication device according to the present invention.

FIG. 2 is an exemplary view for explaining operation keys of the digital wireless communication apparatus.

FIG. 3 is a flowchart illustrating main operations of a CPU of the digital wireless communication device.

FIG. 4 is a flowchart illustrating main operations of a CPU of the digital wireless communication device.

FIG. 5 is a flowchart illustrating main operations of a CPU of the digital wireless communication device.

FIG. 6 is a flowchart illustrating main operations of a CPU of the digital wireless communication device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mini disk 2 Recording / playback part 3 EFM encoder / decoder 4 RAM controller 5 RAM 6 ATRAC encoder / decoder 7 Signal control part 8 Antenna 9 Radio part 10 Modulator 11 Demodulator 12 TDMA circuit 13 Additional information processing part 14 ADPCM circuit 15 DA converter 16 Speaker 17 AD converter 18 Microphone 19 DA converter 20 Headphones 21 CPU 22 Operation unit 23 Display unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04B ⁷ /24-7/26 H04Q 7/02-7/38 G11B 33/00 H04M 1/00 H04M 11 / 00

Claims (4)

(57) [Claims] In a digital wireless communication apparatus, a digital audio recording medium is made detachable, a mounted digital audio recording medium is made reproducible, and reproduced digital audio data and transmitted audio data of a sender are transmitted. And wireless transmission. 2. A reproduced digital audio data, according to claim 1 Symbol placement of the digital wireless communication apparatus, characterized in that play by mixing the received voice data. 3. A digital wireless communication apparatus, wherein a digital audio recording medium is detachable, a mounted digital audio recording medium is reproducible, and received digital audio data and transmission audio data of a speaker are transmitted. A digital wireless communication device for mixing and recording on the digital audio recording medium. 4. A digital radio communication apparatus according to claim 1, 2 or 3, wherein the digital audio recording medium is a mini disc.