Video signal adjustment system and method for controlling the same

• US 20100100653A1
• Filed: 10/14/2009
• Published: 04/22/2010
• Est. Priority Date: 10/17/2008
• Status: Active Grant

• Current Assignee: Fujitsu Component Limited (Fujitsu Limited)
• Original Assignee: Fujitsu Component Limited (Fujitsu Limited)
• Inventors: Iwao, Takashi, Yasuno, Kazuhiro, Ideura, Katsuji
• Granted Patent: US 9,332,214 B2
• Time in Patent Office: Days
• US Class Current: 710/73
• CPC Class Codes: G06F 1/1632 External expansion units, e.g. docking stations
• CPC Class Codes: G06F 3/023 Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• CPC Class Codes: H04N 5/775 between a recording apparatus and a television receiver

Abstract

A video signal adjustment system that is capable of being connected between a server and a console includes: a server unit that is connected to the server; a main unit that is connected to the server unit, and includes a first adjustment portion that adjusts gain and frequency characteristic of a video signal output from the server; and a console unit that is connected between the main unit and the console, and includes a second adjustment portion that adjusts gain, frequency characteristic, and delay of the video signal output from the main unit.

Claims

1. A video signal adjustment system that is capable of being connected between a server and a console, comprising:

a server unit that is connected to the server;

a main unit that is connected to the server unit, and includes a first adjustment portion that adjusts gain and frequency characteristic of a video signal output from the server; and

a console unit that is connected between the main unit and the console, and includes a second adjustment portion that adjusts gain, frequency characteristic, and delay of the video signal output from the main unit.

2. The video signal adjustment system as claimed in claim 1, wherein the main unit includes a first switch, and the first adjustment portion adjusts the gain and the frequency characteristic of the video signal output from the server depending on the depression of the first switch or an adjustment instruction of the video signal from the console.

3. The video signal adjustment system as claimed in claim 1, wherein the console unit includes a second switch, and the second adjustment portion adjusts the gain, the frequency characteristic, and the delay of the video signal output from the main unit depending on the depression of the second switch or an adjustment instruction of the video signal from the console.

4. The video signal adjustment system as claimed in claim 1, wherein the console unit includes a second switch, the first adjustment portion adjusts the gain and the frequency characteristic of the video signal output from the server depending on the depression of the second switch or an adjustment instruction of the video signal from the console, and the second adjustment portion adjusts the gain, the frequency characteristic, and the delay of the video signal output from the main unit depending on the depression of the second switch or the adjustment instruction of the video signal from the console.

5. The video signal adjustment system as claimed in claim 1, wherein the main unit includes a first storage that stores information used to adjust the gain and the frequency characteristic of the video signal output from the server.

6. The video signal adjustment system as claimed in claim 1, wherein the console unit includes a second storage that stores information used to adjust the gain, the frequency characteristic, and the delay of the video signal output from the main unit.

7. The video signal adjustment system as claimed in claim 1, wherein the first adjustment portion includes:

a receiver;

a measurement circuit that inputs a gain adjustment signal and a frequency characteristic adjustment signal output from the server, and measures amounts of attenuation of the gain adjustment signal and the frequency characteristic adjustment signal; and

a voltage applying portion that includes a first table indicating a relation between the amount of attenuation of the gain adjustment signal and a voltage applied to the receiver, and a second table indicating a relation between the amount of attenuation of the frequency characteristic adjustment signal and a voltage applied to the receiver, and applies voltages to the receiver based on the amounts of attenuation of the gain adjustment signal and the frequency characteristic adjustment signal measured by the measurement circuit, and the first and second tables, and

wherein the receiver adjusts the gain and the frequency characteristic of the video signal output from the server depending on the voltages applied to the voltage applying portion.

8. The video signal adjustment system as claimed in claim 1, wherein the second adjustment portion includes:

a receiver;

a measurement circuit that inputs the video signal, a gain adjustment signal and a frequency characteristic adjustment signal output from the server, and measures amounts of attenuation of the gain adjustment signal and the frequency characteristic adjustment signal, and an amount of delay of the video signal;

a delay circuit that adjusts the delay of the video signal depending on the amount of delay of the video signal measured by the measurement circuit; and

a voltage applying portion that includes a first table indicating a relation between the amount of attenuation of the gain adjustment signal and a voltage applied to the receiver, and a second table indicating a relation between the amount of attenuation of the frequency characteristic adjustment signal and a voltage applied to the receiver, and applies voltages to the receiver based on the amounts of attenuation of the gain adjustment signal and the frequency characteristic adjustment signal measured by the measurement circuit, and the first and second tables, and

wherein the receiver adjusts the gain and the frequency characteristic of the video signal output from the server depending on the voltages applied to the voltage applying portion.

9. A method for controlling a video signal adjustment system that is capable of being connected between a server and a console, and includes a server unit, a main unit, and a console unit, the method comprising:

adjusting gain and frequency characteristic of a video signal output from the server; and

adjusting gain, frequency characteristic, and delay of the video signal output from the main unit.