SIGNAL TRANSMISSION DEVICE, RECEIVING CIRCUIT, AND ELECTRONIC APPARATUS

• US 20140178064A1
• Filed: 09/02/2011
• Published: 06/26/2014
• Est. Priority Date: 08/09/2011
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Hino, Yasufumi
• Granted Patent: US 9,793,992 B2
• Time in Patent Office: Days
• US Class Current: 398/41
• CPC Class Codes: H04B 1/1036 with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters H04B1/123 takes precedence; filter circuits H03H
• CPC Class Codes: H04B 10/2589 Bidirectional transmission
• CPC Class Codes: H04B 3/52 Systems for transmission between fixed stations via waveguides
• CPC Class Codes: H04J 1/02 Details
• CPC Class Codes: H04J 1/12 Arrangements for reducing cross-talk between channels in line transmission systems H04B3/32; in cables or lines H04B3/26 - H04B3/30
• CPC Class Codes: H04L 2025/03426 transmission using multiple-input and multiple-output channels
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/16 Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission

Abstract

There is provided a signal transmission device including reception processing units for respective channels, so as to enable multichannel transmission by dividing frequency bands. The total number of channels is equal to or greater than three. When full-duplex two-way communication is applied in any combination of two channels, one of reception processing unit include a signal suppressing unit configured to suppress a signal component of a channel other than a self channel.

Claims

1. ) A signal transmission device comprising:

reception processing units for respective channels, so as to enable multichannel transmission by dividing frequency bands,

wherein a total number of channels is equal to or greater than three, and

wherein, when full-duplex two-way communication is applied in any combination of two channels, one of reception processing unit include a signal suppressing unit configured to suppress a signal component of a channel other than a self channel.

2. ) The signal transmission device according to claim 1,

wherein the reception processing unit includes an amplifier configured to have frequency selectivity for the self channel and amplify a received signal,

wherein the signal suppressing unit includes a gain suppressing unit provided in the amplifier, and

wherein, when the full-duplex two-way communication is applied in any combination of two channels, the gain suppressing unit is configured to suppress a gain of a channel other than the self channel, the channel having an insufficient attenuation degree in a gain frequency characteristic.

3. ) The signal transmission device according to claim 2,

wherein the combination of two channels has a relation of mutually adjacent channels, and

wherein the gain suppressing unit is configured to suppress a gain of a channel that has an insufficient attenuation degree in the gain frequency characteristic, the channel being one of a lower-side adjacent channel and an upper-side adjacent channel.

4. ) The signal transmission device according to claim 3,

wherein the gain frequency characteristic of the amplifier having no gain suppressing unit is shown such that a high frequency side has more insufficient gain attenuation than a low frequency side with respect to the self channel, and

wherein the gain suppressing unit provided in a lower-side adjacent channel amplifier is configured to suppress a gain of the upper-side adjacent channel.

5. ) The signal transmission device according to claim 4, further comprising:

a first communication device and a second communication device coupled by a waveguide,

wherein the first communication device includes a first channel transmission processing unit, a second channel reception processing unit, and a third channel transmission processing unit,

wherein the second communication device includes a first channel reception processing unit, a second channel transmission processing unit, and a third channel reception processing unit,

wherein a carrier frequency of a second channel is set higher than a carrier frequency of a first channel, and a carrier frequency of a third channel is set higher than the carrier frequency of the second channel,

wherein the full-duplex two-way communication is applicable to a combination of the second channel and the first channel and a combination of the second channel and the third channel,

wherein an amplifier of the first channel reception processing unit includes a gain suppressing unit configured to suppress a gain of the second channel, and

wherein an amplifier of the second channel reception processing unit includes a gain suppressing unit configured to suppress a gain of the third channel.

6. ) The signal transmission device according to claim 4, further comprising:

a first communication device and a second communication device coupled by a waveguide,

wherein the first communication device includes a first channel transmission processing unit, a second channel transmission processing unit, and a third channel reception processing unit,

wherein the second communication device includes a first channel reception processing unit, a second channel reception processing unit, and a third channel transmission processing unit,

wherein a carrier frequency of a second channel is set higher than a carrier frequency of a first channel, and a carrier frequency of a third channel is set higher than the carrier frequency of the second channel,

wherein the full-duplex two-way communication is applicable to a combination of the third channel and the first channel and a combination of the third channel and the second channel, and

wherein an amplifier of the second channel reception processing unit includes a gain suppressing unit configured to suppress a gain of the third channel.

7. ) The signal transmission device according to claim 4, further comprising:

a first communication device and a second communication device coupled by a waveguide,

wherein the first communication device includes a first channel reception processing unit, a second channel transmission processing unit, and a third channel transmission processing unit,

wherein the second communication device includes a first channel transmission processing unit, a second channel reception processing unit, and a third channel reception processing unit,

wherein a carrier frequency of a second channel is set higher than a carrier frequency of a first channel, and a carrier frequency of a third channel is set higher than the carrier frequency of the second channel,

wherein the full-duplex two-way communication is applicable to a combination of the first channel and the second channel and a combination of the first channel and the third channel, and

wherein an amplifier of the first channel reception processing unit includes a gain suppressing unit configured to suppress a gain of the second channel.

8. ) The signal transmission device according to claim 2,

wherein, when simplex two-way communication is applied in any combination of two channels, the gain suppressing unit is configured to suppress a gain of a channel other than the self channel, the channel having an insufficient attenuation degree in the gain frequency characteristic.

9. ) The signal transmission device according to claim 8,

wherein the combination of two channels has a relation of mutually adjacent channels, and

wherein the gain suppressing unit is configured to suppress a gain of a channel that has an insufficient attenuation degree in the gain frequency characteristic, the channel being one of a lower-side adjacent channel and an upper-side adjacent channel.

10. ) The signal transmission device according to claim 9,

wherein the gain frequency characteristic of the amplifier having no gain suppressing unit is shown such that a high frequency side has more insufficient gain attenuation than a low frequency side with respect to the self channel, and

wherein the gain suppressing unit provided in a lower-side adjacent channel amplifier is configured to suppress a gain of the upper-side adjacent channel.

11. ) The signal transmission device according to claim 10, further comprising:

a first communication device and a second communication device coupled by a waveguide,

wherein the first communication device includes a first channel transmission processing unit, a second channel transmission processing unit, and a third channel reception processing unit,

wherein the second communication device includes a first channel reception processing unit, a second channel reception processing unit, and a third channel transmission processing unit,

wherein a carrier frequency of a second channel is set higher than a carrier frequency of a first channel, and a carrier frequency of a third channel is set higher than the carrier frequency of the second channel,

wherein the full-duplex two-way communication is applicable to a combination of the third channel and the first channel and a combination of the third channel and the second channel,

wherein the simplex two-way communication is applicable to a combination of the first channel and the second channel,

wherein an amplifier of the first channel reception processing unit includes a gain suppressing unit configured to suppress a gain of the second channel, and

wherein an amplifier of the second channel reception processing unit includes a gain suppressing unit configured to suppress a gain of the third channel.

12. ) The signal transmission device according to claim 10, further comprising:

a first communication device and a second communication device coupled by a waveguide,

wherein the first communication device includes a first channel reception processing unit, a second channel transmission processing unit, and a third channel transmission processing unit,

wherein the second communication device includes a first channel transmission processing unit, a second channel reception processing unit, and a third channel reception processing unit,

wherein a carrier frequency of a second channel is set higher than a carrier frequency of a first channel, and a carrier frequency of a third channel is set higher than the carrier frequency of the second channel,

wherein the full-duplex two-way communication is applicable to a combination of the first channel and the second channel and a combination of the first channel and the third channel,

wherein the simplex two-way communication is applicable to a combination of the second and third channels,

wherein an amplifier of the first channel reception processing unit includes a gain suppressing unit configured to suppress a gain of the second channel, and

wherein an amplifier of the second channel reception processing unit includes a gain suppressing unit configured to suppress a gain of the third channel.

16. ) The signal transmission device according to claim 1,

wherein the gain suppressing unit is composed of a trap circuit.

13. ) A signal transmission device comprising:

reception processing units for respective channels, so as to enable multichannel transmission by dividing frequency bands,

wherein a total number of channels is equal to or greater than two, and

wherein, when simplex two-way communication is applied in any combination of two channels, one of reception processing units include a signal suppressing unit configured to suppress a signal component of a channel other than a self channel.

14. ) The signal transmission device according to claim 13,

wherein the reception processing unit includes an amplifier configured to have frequency selectivity for the self channel and amplify a received signal,

wherein the signal suppressing unit includes a gain suppressing unit provided in the amplifier, and

wherein, when the simplex two-way communication is applied in any combination of two channels, the gain suppressing unit is configured to suppress a gain of a channel other than the self channel, the channel having an insufficient attenuation degree in a gain frequency characteristic.

15. ) The signal transmission device according to claim 14,

wherein the combination of two channels has a relation of mutually adjacent channels, and

wherein the gain suppressing unit is configured to suppress a gain of a channel that has an insufficient attenuation degree in the gain frequency characteristic, the channel being one of a lower side adjacent channel and an upper side adjacent channel.

17. ) A receiving circuit comprising:

a signal suppressing unit configured to suppress a signal component of a channel other than a self channel, when a total number of channels is equal to or greater than three and full-duplex two-way communication is applied in any combination of two channels.

18. ) A receiving circuit comprising:

a signal suppressing unit configured to suppress a signal component of a channel other than a self channel, when simplex two-way communication is applied in any combination of two channels.

19. ) An electronic apparatus comprising:

reception processing units for respective channels, so as to enable multichannel transmission by dividing frequency bands,

wherein a total number of channels is equal to or greater than three, and

wherein, when full-duplex two-way communication is applied in any combination of two channels, one of reception processing units include a signal suppressing unit configured to suppress a signal component of a channel other than a self channel.

20. ) An electronic apparatus comprising:

reception processing units for respective channels, so as to enable multichannel transmission by dividing frequency bands,

wherein a total number of channels is equal to or greater than two, and

wherein, when simplex two-way communication is applied in any combination of two channels, one of reception processing units include a signal suppressing unit configured to suppress a signal component of a channel other than a self channel.