Apparatus and method for recording meeting and/or teleconference

• US 20030179860A1
• Filed: 03/22/2002
• Published: 09/25/2003
• Est. Priority Date: 03/22/2002
• Status: Abandoned Application

• Current Assignee: Multisuns Corporation
• Original Assignee: Multisuns Corporation
• Inventors: Lin, Chih Long, Sun, Bruce W.H.
• Application Number:
  US10/102,822
• Publication Number:
  US 20030179860A1
• Time in Patent Office: Days
• US Class Current: 379/67.1
• CPC Class Codes: H04M 1/656 for recording conversations

Abstract

An apparatus for recording a meeting held in a room and/or teleconference comprises a signal receiving unit, a CODEC unit, a data processing unit, an input control unit, a storage unit, a speaker unit, a telephone unit, and a power source. A process for recording the meeting and/or teleconference comprises the steps of basic input control, state control, digital data processing, voice searching, echo attenuation, DTMF generation and receiving, voice processing, and file system management. With this, voice of an individual who is making a speech during the meeting and/or teleconference is located, amplified, and compressed prior to being recorded in a file of minutes. The minutes is integrated prior to storing in the storage unit in digital format so as to improve recording quality and facilitate reading and inquiry of the minutes.

Claims

1. An apparatus for recording a meeting held in a room and/or a teleconference, comprising:

a first signal receiving unit including a plurality of microphones and a first signal amplifier for amplifying signals transmitted from the microphones;

a coder/decoder (CODEC) unit including an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), and a DAC/ADC;

a data processing unit including a logic control device for combining digital signals from peripheral devices into one for ease of control and a central processing device for data input/output (I/O);

an input control unit implemented as a keypad for inputting a control signal from user to the central processing device so as to perform a direction adjustment, a recording, a reading, or an inquiry;

a storage unit controlled by the central processing device in data I/O;

a speaker unit including a power amplifier for amplifying a signal outputted from the DAC and a speaker for output;

a telephone unit including a telephone interface circuit coupled to a central office (CO) so that either the digital signal from the data processing unit is converted into an analog signal in the DAC/ADC prior to transmitting to the CO through the telephone interface circuit, or the analog signal from the CO is converted into the digital signal in the DAC/ADC through the telephone interface circuit prior to transmitting to the data processing unit; and

a power source for supplying a rated voltage;

whereby voice of an individual who is making a speech during the meeting or the teleconference is located, amplified, and compressed prior to being recorded in a file of minutes, and the minutes is integrated prior to storing in the storage unit in digital format so as to improve a recording quality and facilitate a reading and an inquiry of the minutes.

2. The apparatus of claim 1, wherein the first signal receiving unit includes three coplanar microphones, each being implemented as either a capacitive or an inductive microphone;

the logic control device is implemented as a field programmable gate array (FPGA) chip or other chip having the same capability;

the central processing device is responsible for data I/O, the central processing device being implemented as one of digital signal processing (DSP) chip, Intel central processing unit (CPU) such as 80×

86 or Pentium series, micro-controller such as 8051, 8096, or Micron, and other chip for processing data I/O; and

the storage unit is a nonvolatile memory implemented as floppy disk, read-only memory (ROM), CD-RW, DVD-RAM, erasable programmable ROM (EEPROM), Flash ROM, Compact Flash, Smart Media, MultiMedia Card (MMC), Secure Digital (SD), Memory Stick, Memory Disk (MD), or other storage means in data

3. The apparatus of claim 1, further comprising a second signal receiving unit including at least one microphone and a second signal amplifier wherein the second signal receiving unit is not coplanar with respect to the first signal receiving unit.

4. The apparatus of claim 3, wherein at least one microphone of the second signal receiving unit and the second signal amplifier are combined in the second signal receiving unit;

the logic control device and the central processing device are combined on a single chip; and

the ADC, the DAC, and the DAC/ADC are combined on a single chip in the CODEC unit.

5. The apparatus of claim 1, further comprising a timer for providing real time information which in conjunction with a naming rule specified by the data processing unit are employed for processing filenames.

6. The apparatus of claim 1, wherein the signal receiving unit, the CODEC unit, the data processing unit, the input control unit, and the storage unit are combined on a single chip by means of one of a plurality of semiconductor manufacturing techniques.

7. The apparatus of claim 1, further comprising a display unit including a display controlled by the logic control device for receiving a control signal from the central processing device wherein the display is one of cathode ray tube (CRT) monitor and liquid crystal display (LCD) monitor such as TSDN or thin film transistor (TFT)-LCD.

8. The apparatus of claim 1, further comprising a wireless input control unit including a keypad for user input commands, a wireless encoder, a transmitter both for converting commands into a signal for transmission, a wireless decoder, and a receiver both for receiving the signals which are in turn combined by the logic control device prior to sending to the central processing device.

9. The apparatus of claim 1, further comprising a first software comprising the steps of:

(a) basic input control for receiving a control signal from the input control unit, queuing events, and converting the control signal into corresponding index of the event;

(b) state control for converting a current state of the event into the other one based on the current state;

(c) digital data processing for controlling data I/O and timing of the ADC, the DAC, and the DAC/ADC so as to further improve the recording quality;

(d) voice searching for receiving data from the signal receiving unit and the CODEC unit, guiding the received data for searching a voice source of the signal receiving unit, synthesizing signals toward the voice source, amplifying the synthesized signal a predetermined number of times, decreasing the other non-synthesized signals a predetermined number of times, and outputting the amplified signal via the step (c);

(e) echo attenuation in space and telephone for receiving the signal from either the signal receiving unit and the DAC or the telephone unit and the DAC/ADC via the step (c) prior to attenuating the signal which is in turn sent back to the step (c);

(f) dual-tone multifrequency (DTMF) generation and receiving for receiving the signal from the telephone unit and the DAC/ADC via the step (c) prior to determining whether the signal is a DTMF signal, if the determination is positive, sending a received command back to the step (b), or alternatively, receiving a control code generated in the step (b) prior to generating the DTMF signal, and sending a created data back to the telephone unit and the DAC/ADC via the step (c);

(g) voice processing is responsible for receiving the amplified digital signal from the step (c) and compressing the same, or decompressing data sent from step (f) as commanded and sending the decompressed data back to the step (c); and

(h) file system management for receiving the compressed signal, controlling an access to the compressed signal by the storage unit, and reading data from the storage unit for sending the same back to the step (g).

10. The apparatus of claim 9, wherein in the step (d) the synthesized signal is amplified three times, and the other non-synthesized signals are decreased three times.

11. The apparatus of claim 9, wherein in the step (g) a voice compression format is selected from MP3, GSM 6.10, CELP 3.2a, MELP, ACELP, TRUE SPEECH, LPC 10e, ADPCM, ALAW, or ULAW.

12. The apparatus of claim 9, wherein in the step (f) a file system is selected from FAT 12, FAT 16, Virtual FAT (VFAT), FAT 32, NT File System (NTFS), or Ext 2 (Linux).

13. An apparatus for recording a meeting held in a room and/or a teleconference, comprising:

a first signal receiving unit including a plurality of microphones and a first signal amplifier;

a coder/decoder (CODEC) unit including an analog-to-digital converter (ADC);

a data processing unit including a logic control device and a central processing device;

an input control unit implemented as a keypad for inputting a control signal from user to the central processing device;

a storage unit controlled by the central processing device in data input/output (I/O);

a digital-to-analog converter (DAC) for converting a digital signal from the central processing device into an analog signal;

a speaker unit including a power amplifier for amplifying a signal from the DAC and outputting the same;

a telephone unit including a telephone interface circuit coupled to a central office (CO);

a DAC/ADC for converting the analog signal sent from the CO into the digital signal or converting the digital signal sent from the central processing device into the analog signal;

a power source for supplying a rated voltage; and

a software comprising the steps of;

(a) basic input control for receiving a control signal from the input control unit, queuing events, and converting the control signal into corresponding index of the event;

(b) state control for converting a current state of the event into the other one based on the current state;

(c) digital data processing for controlling data I/O and timing of the ADC, the DAC, and the DAC/ADC so as to further improve the recording quality;

(d) voice searching for receiving data from the signal receiving unit and the CODEC unit, guiding the received data for searching a voice source of the signal receiving unit, synthesizing signals toward the voice source, amplifying the synthesized signal a predetermined number of times, decreasing the other non-synthesized signals a predetermined number of times, and outputting the amplified signal via the step (c);

(e) echo attenuation in space and telephone for receiving the signal from either the signal receiving unit and the DAC or the telephone unit and the DAC/ADC via the step (c) prior to attenuating the signal which is in turn sent back to the step (c);

(f) dual-tone multifrequency (DTMF) generation and receiving for receiving the signal from the telephone unit and the DAC/ADC via the step (c) prior to determining whether the signal is a DTMF signal, if the determination is positive, sending a received command back to the step (b), or alternatively, receiving a control code generated in the step (b) prior to generating the DTMF signal, and sending a created data back to the telephone unit and the DAC/ADC via the step (c);

(g) voice processing is responsible for receiving the amplified digital signal from the step (c) and compressing the same, or decompressing data sent from step (f) as commanded and sending the decompressed data back to the step (c); and

(h) file system management for receiving the compressed signal, controlling an access to the compressed signal by the storage unit, and reading data from the storage unit for sending the same back to the step (g).

14. The apparatus of claim 13, further comprising a second signal receiving unit including at least one microphone and a second signal amplifier wherein the second signal receiving unit is not coplanar with respect to the first signal receiving unit.

15. The apparatus of claim 13, wherein at least one microphone of the second signal receiving unit and the second signal amplifier are combined in the second signal receiving unit;

the logic control device and the central processing device are combined on a single chip; and

the ADC, the DAC, and the DAC/ADC are combined on a single chip in the CODEC unit.

16. The apparatus of claim 13, further comprising a timer for providing real time information which in conjunction with a naming rule specified by the data processing unit are employed for processing filenames.

17. The apparatus of claim 13, wherein the signal receiving unit, the CODEC unit, the data processing unit, the input control unit, and the storage unit are combined on a single chip by means of one of a plurality of semiconductor manufacturing techniques.

18. The apparatus of claim 13, wherein the telephone unit further comprises a public branch exchange (PBX) for effecting a multiple-way talking on a telephone during the meeting or the teleconference, further comprising the step (i) of multi-way talking balance between the steps (f) and (g) for receiving data from the step (f), synthesizing the received data with the signals from the PBX and other components of the apparatus, processing the synthesized signal to form into a balanced signal, and outputting the balanced signal to all associated components of the apparatus via the step (c).

19. An apparatus for recording a meeting held in a room and/or a teleconference, comprising:

a first signal receiving unit including a plurality of microphones and a first signal amplifier;

a coder/decoder (CODEC) unit including an analog-to-digital converter (ADC);

a data processing unit including a logic control device and a central processing device;

a timer for providing real time information being controlled by the logic control device;

an input control unit implemented as a keypad for inputting a control signal from user to the central processing device;

a storage unit controlled by the central processing device in data input/output (I/O);

a digital-to-analog converter (DAC) for converting a digital signal from the central processing device into an analog signal;

a speaker unit including a power amplifier for amplifying a signal from the DAC and outputting the same;

a telephone unit including a telephone interface circuit coupled to a public branch exchange (PBX) for effecting a multiple-way talking on a telephone during the meeting or the teleconference;

a DAC/ADC for converting the analog signal sent from the PBX into the digital signal or converting the digital signal sent from the central processing device into the analog signal;

a display unit controlled by the logic control device for receiving a control signal from the central processing device;

a power source for supplying a rated voltage; and

a software comprising the steps of;

(a) basic input control for receiving a control signal from the input control unit, queuing events, and converting the control signal into corresponding index of the event;

(b) state control for converting a current state of the event into the other one based on the current state;

(c) digital data processing for controlling data I/O and timing of the ADC, the DAC, and the DAC/ADC so as to further improve the recording quality;

(d) voice searching for receiving data from the signal receiving unit and the CODEC unit, guiding the received data for searching a voice source of the signal receiving unit, synthesizing signals toward the voice source, amplifying the synthesized signal a predetermined number of times, decreasing the other non-synthesized signals a predetermined number of times, and outputting the amplified signal via the step (c);

(e) echo attenuation in space and telephone for receiving the signal from either the signal receiving unit and the DAC or the telephone unit and the DAC/ADC via the step (c) prior to attenuating the signal which is in turn sent back to the step (c);

(f) dual-tone multifrequency (DTMF) generation and receiving for receiving the signal from the telephone unit and the DAC/ADC via the step (c) prior to determining whether the signal is a DTMF signal, if the determination is positive, sending a received command back to the step (b), or alternatively, receiving a control code generated in the step (b) prior to generating the DTMF signal, and sending a created data back to the telephone unit and the DAC/ADC via the step

(f1) multi-way talking balance for receiving data from the step (f), synthesizing the received data with the signals from the PBX and other components of the apparatus, processing the synthesized signal to form into a balanced signal, and outputting the balanced signal to all associated components of the apparatus via the step (c);

(g) voice processing is responsible for receiving the amplified digital signal from the step (c) and compressing the same, or decompressing data sent from step (f) as commanded and sending the decompressed data back to the step (c);

(g1) display control for controlling a display of the display unit as instructed by the step (b); and

(h) file system management for receiving the compressed signal from the step (g), providing real time information by the timer wherein the real time information is in conjunction with a naming rule specified by the data processing unit for processing filenames, and controlling an access to the compressed signal by the storage unit.

20. The apparatus of claim 19, further comprising a second signal receiving unit including at least one microphone and a second signal amplifier wherein the second signal receiving unit is not coplanar with respect to the first signal receiving unit.