TRANSMITTER, RECEIVER, COMMUNICATION EQUIPMENT, COMMUNICATION SYSTEM, TRANSMISSION METHOD AND RECEPTION METHOD

• US 20110321106A1
• Filed: 12/22/2009
• Published: 12/29/2011
• Est. Priority Date: 12/24/2008
• Status: Abandoned Application

• Current Assignee: Kazuo Fuda, Sachio Takahashi
• Original Assignee: Kazuo Fuda, Sachio Takahashi
• Inventors: Takahashi, Sachio, Fuda, Kazuo
• Application Number:
  US12/998,929
• Publication Number:
  US 20110321106A1
• Time in Patent Office: Days
• US Class Current: 725/109
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/4381 Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/814 comprising emergency warnings arrangements specially adapted for emergency or urgency in broadcast systems H04H20/59; arrangements for providing alarms, notifications, alerts to substation in data switching networks H04L12/1895

Abstract

To reduce the time required for communication of a video image data, as well as to prevent deterioration of image quality caused by compression and decompression. A clock control means 20 which outputs a plurality of clocks which have different frequencies; a division means 510 which divides analogue data into a prescribed number; a clock attachment means (transmission block processing part 520) which attaches a clock of a different frequency to each of the divided analogue data; a digital converting means (A/D conversion part 530) which converts the analogue data to digital data, thereby to generate a plurality of digital signals; and a transmission means (transmission part 710) which transmits to the outside the plurality of digital signals as transmission signals are provided.

Claims

1. A transmitter comprising:

a clock control means which outputs a plurality of clocks which have different frequencies;

a division means which divides analogue data into a prescribed number;

a clock attachment means which attaches a clock of a different frequency to each of the divided analogue data;

a digital converting means which converts the analogue data to digital data, thereby to generate a plurality of digital signals; and

a transmission means which transmits to the outside the plurality of digital signals as transmission signals.

2. The transmitter according to claim 1, wherein each of the divided analogue data is referred to as divided data, and the clock attachment means divides each of the divided data according to a prescribed data amount, thereby to generate a plurality of block data, and attaches a clock of the same frequency to each of the plurality of block data divided from one divided data.

3. The transmitter according to claim 2, wherein, when the transmission signal is transferred to other apparatuses through a radio or cable transmission path, each of the block data has a prescribed data amount which can be transmitted by the transmission path.

4. The transmitter according to claim 2, wherein the division means divides the analogue data in correspondence with each region which is formed when the division means divides one image generated by the analogue data into a plurality of regions, and

the clock attachment means sets a stage for each of the regions, provides a signal frame for each of these stages, puts the block data in these signal frames, allows a clock of a different frequency to correspond to each of the stages, and attaches the block data the clock corresponding to the stage.

5. The transmitter according to claim 1, wherein the plurality of clocks has different frequencies which are multiple integral of a prescribed frequency.

6. The transmitter according to claim 5, wherein the frequency range of the stage is 0 Hz to multiple integral of 2.4 MHz, and

the frequency which is multiple integral of 2.4 MHz is set by the clock.

7. The transmitter according to claim 1, wherein it provides with a plurality of crystal oscillators which output a clock and send the clock to the clock control means, and

the plurality of crystal oscillators output clocks of different frequencies.

8. The transmitter according to claim 7, wherein the clock control means receives a clock from the plurality of crystal oscillators, and selects and outputs one or two or more clocks according to the type of the analogue data.

14. A communication system comprising one or two or more transmitters and one or two or more receivers, wherein

the transmitters comprise the transmitter according to claim 1, and

the receivers comprise a receiver comprising

a receiving means which receives signals from the outside;

a splitter which splits the signals into a plurality of digital signals;

an analogue converting means which converts the plurality of digital signals to analogue signals and separates the signals into a plurality of analogue data and clocks; and

a synthesizing means which synthesizes the plurality of analogue data according to the frequency of the clock.

15. A communication system according to claim 14, which further comprises a base station which relays signals which are transmitted and received between the transmitter and the receiver.

9. A receiver comprising:

a receiving means which receives signals from the outside;

a splitter which splits the signals into a plurality of digital signals;

an analogue converting means which converts the plurality of digital signals to analogue signals and separates the signals into a plurality of analogue data and clocks; and

a synthesizing means which synthesizes the plurality of analogue data according to the frequency of the clock.

10. The receiver according to claim 9, wherein the synthesizing means determines the order of synthesizing the analogue data according to the frequency of the clock.

11. A communication apparatus comprising:

a clock control means which outputs a plurality of clocks which have different frequencies;

a division means which divides analogue data into a prescribed number;

a clock attachment means which attaches a clock of a different frequency to each of the divided analogue data;

a digital converting means which converts the analogue data to which the clock has been attached to digital data, thereby to generate a plurality of digital signals;

a transmission means which transmits to the outside the plurality of digital signals as transmission signals;

a receiving means which receives signals from the outside;

a splitter which splits the signals into a plurality of digital signals;

an analogue converting means which converts the plurality of digital signals to analogue signals to separate the signals into a plurality of analogue data and clocks; and

a synthesizing means which synthesizes the plurality of analogue data according to the frequency of the clock.

12. The communication apparatus according to claim 11 wherein the communication apparatus comprises a mobile phone.

13. The communication apparatus according to claim 11 wherein the communication apparatus comprises a web tuner.

16. A communication system which comprises a plurality of communication apparatuses and a base station which relays signals which are transmitted and received between the communication apparatuses, wherein the communication apparatuses comprise the communication apparatus according to claim 11.

17. A communication system which comprises a web tuner which receives video image communication signals which have been transmitted from a video image distribution apparatus through a communication line and outputs video image signals, and a display apparatus which displays a video image based on the video image signals, wherein the web tuner comprises the communication apparatus according to claim 13.

18. The communication system according to claim 17 which comprises a image-pick up apparatus which takes a video image, wherein the video image distribution apparatus receives signals of the picked-up video image which has been transmitted from the image-pick up apparatus, and transmits through the communication line the picked-up video image signals to a web tuner as the video image communication signals.

19. A communication system comprising:

a camera apparatus which takes an image of an object to be photographed;

a first web tuner which receives picked-up image signals based on the image taken by the camera apparatus;

a video image distribution apparatus which receives the picked-up image signals from the first web tuner and transmits the signals to a second web tuner through a communication line; and

a display apparatus which inputs the picked-up image signals through the second web tuner and displays a video image based on the picked-up image signals, wherein

the first and/or the second web tuner comprises the communication apparatus according to claim 13.

20. A transmission method comprising:

outputting a plurality of clocks which have different frequencies;

dividing analogue data into a prescribed number;

attaching a clock of a different frequency to each of the divided analogue data;

converting the analogue data to which the clock has been attached to digital data, thereby to generate a plurality of digital signals; and

transmitting the plurality of digital signals to the outside as transmission signals.

21. The transmission method according to claim 20, which further comprises referring each of the divided analogue data to as divided data, and dividing each of the divided data according to a prescribed data amount, thereby to generate a plurality of block data, and attaching a clock of the same frequency to each of the plurality of block data classified from one divided data.

22. A receiving method comprising:

receiving signals from the outside;

splitting the signals into a plurality of digital signals;

converting the plurality of digital signals to analogue signals and dividing the signals into a plurality of analogue data and clocks; and

synthesizing the plurality of analogue data based on the frequency of the clock.

23. The receiving method according to claim 22 which further comprises determining the order of synthesizing the analogue data based on the frequency of the clock.