Method and apparatus for performing analog-to-digital conversion on multiple input signals

• US 9,473,159 B2
• Filed: 10/12/2015
• Issued: 10/18/2016
• Est. Priority Date: 07/31/2013
• Status: Active Grant

• Current Assignee: Saturn Licensing LLC (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Fay, Luke
• Primary Examiner(s): JEANGLAUDE, JEAN BRUNER
• Application Number:
  US14/880,518
• Publication Number:
  US 20160036457A1
• Time in Patent Office: 372 Days
• Field of Search: 341/155, 341/156, 341/131, 341/139, 341/141
• US Class Current: 1/1
• CPC Class Codes: H03D 7/165 at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature combined with amplitude demodulation H03D1/2245, combined with angle demodulation H03D3/007; N-path filters H03H19/002
• CPC Class Codes: H03M 1/12 Analogue/digital converters H03M1/001 – H03M1/10 take precedence
• CPC Class Codes: H03M 1/122 Shared using a single converter or a part thereof for multiple channels, e.g. a residue amplifier for multiple stages
• CPC Class Codes: H03M 1/1245 Details of sampling arrangements or methods
• CPC Class Codes: H04B 1/0025 using a sampling rate lower than twice the highest frequency component of the sampled signal for demodulation of angle-modulated signals H03D3/006

Abstract

A method, computer-readable storage medium, and signal processing apparatus for processing a plurality of input signals. The method includes receiving or generating a first intermediate signal and a second intermediate signal. The first and second intermediate signals are summed and the summed signals are output to a signal analog-to-digital converter having a predetermined sampling frequency.

Claims

1. A method of a signal processing apparatus for processing signals, the method comprising:

receiving a radio frequency (RF) input including a plurality of RF signals;

generating a first intermediate signal based on a first one of the plurality of RF signals;

generating a second intermediate signal based on a second one of the plurality of RF signals; and

summing the first and second intermediate signals,

wherein the first and second intermediate signals are placed within a predetermined frequency spectrum range based on a predetermined sampling frequency (Fs).

2. The method according to claim 1, wherein the first and second intermediate signals are generated based on the predetermined Fs.

3. The method according to claim 1, wherein the first one of the plurality of RF signals is carried in a forward application transport (FAT) channel.

4. The method according to claim 1, wherein the second one of the plurality of RF signals is carried in an out-of-band (OOB) channel.

5. The method according to claim 1, wherein the plurality of RF signals includes at least one digital television broadcast signal.

6. A non-transitory computer-readable medium storing instructions which when executed by a computer cause the computer to perform a method of processing signals, the method comprising:

receiving a radio frequency (RF) input including a plurality of RF signals;

generating a first intermediate signal based on a first one of a plurality of RF signals;

generating a second intermediate signal based on a second one of the plurality of RF signals; and

summing the first and second intermediate signals,

wherein the first and second intermediate signals are placed within a predetermined frequency spectrum range based on a predetermined sampling frequency (Fs).

7. A signal processing apparatus, comprising:

circuitry configured to

receive a radio frequency (RF) input including a plurality of RF signals,

generate a first intermediate signal based on a first one of the plurality of RF signals;

generate a second intermediate signal based on a second one of the plurality of RF signals; and

sum the first and second intermediate signals,

wherein the first and second intermediate signals are placed within a predetermined frequency spectrum range based on a predetermined sampling frequency (Fs).

8. The signal processing apparatus according to claim 7, wherein the first and second intermediate signals are generated based on the predetermined Fs.

9. The signal processing apparatus according to claim 7, wherein the first one of the plurality of RF signals is carried in a forward application transport (FAT) channel.

10. The signal processing apparatus according to claim 7, wherein the second one of the plurality of RF signals is carried in an out-of-band (OOB) channel.

11. The signal processing apparatus according to claim 7, wherein the plurality of RF signals includes at least one digital television broadcast signal.