Data download method through multimedia device

• US 6,934,883 B2
• Filed: 05/21/2001
• Issued: 08/23/2005
• Est. Priority Date: 06/09/2000
• Status: Expired due to Fees

• Current Assignee: Robotis Co., Ltd.
• Original Assignee: Robotis Co., Ltd.
• Inventors: Ha, In-Yong, Kim, Byoung-Soo
• Primary Examiner(s): Iqbal, Nadeem
• Application Number:
  US09/805,873
• Publication Number:
  US 20010052086A1
• Time in Patent Office: 1,555 Days
• Field of Search: 714/25, 714/27, 714/31, 714/32, 714/37, 714/39, 714/45, 714/48, 714/57, 714/819, 714/821, 714/824, 345/339, 345/340, 345/341
• US Class Current: 714/25
• CPC Class Codes: H04N 21/4112 having fewer capabilities than the client, e.g. thin client having less processing power or no tuning capabilities
• CPC Class Codes: H04N 21/4331 Caching operations, e.g. of an advertisement for later insertion during playback
• CPC Class Codes: H04N 21/4363 Adapting the video stream to a specific local network, e.g. a Bluetooth® network
• CPC Class Codes: H04N 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/4782 Web browsing , e.g. WebTV
• CPC Class Codes: H04N 7/163 by receiver means only

Abstract

In a method for downloading data through a multimedia device, a screen output device generates a multimedia output representing data to be downloaded through the multimedia device. An analog level comparator compares a level of an electric signal with a reference level, i.e., a reference voltage, and outputs a comparison result signal. A digital signal input device receives the comparison result signal from the comparator. An error correcting section judges whether the downloaded data is damaged based on the comparison result signal from the comparator. If the error is detected, the reference voltage of the analog level comparator is amended, so as to accurately control sensitivity until the error is absent. If the error is not detected, the downloaded data is used.

Claims

1. A method for downloading data from a multimedia device to a receiver comprising the steps of:

a) generating a signal which comprises the data represented by a color change of screen output in the multimedia device;

b) converting the signal in step a) into an electric signal by receiver;

c) comparing a level of the electric signal with a reference level and outputting a comparison result signal; and

d) judging whether the downloaded data has an error based on the comparison result signal.

2. The method as claimed in claim 1, wherein the step c) is performed by an analog level comparator, and wherein said method further comprises the steps of:

e) if an error is detected, adjusting the reference level of the analog level comparator, until the error is not detected; and

f) if an error is not detected, reconstituting the data.

3. A method for downloading data from a multimedia device to a receiver comprising the steps of:

a) generating a signal which comprises the data represented by a color change of screen output in the multimedia device;

b) converting the signal in step a) into an electric signal by receiver;

c) converting the electric signal into a digital signal;

d) comparing the digital signal with a reference value and outputting a comparison result signal; and

e) judging whether the download data has an error based on the comparison result signal.

4. The method as claimed in claim 3, wherein the step d) is performed by a software comparison section, and wherein said method further comprises the steps of:

f) if an error is detected, adjusting the reference value of the software comparison section until the error is not detected; and

g) if an error is not detected;

reconstituting the data.

5. A data download system transmitting the data from a multimedia device to a receiver comprising the steps of:

means for generating a signal which comprises the data represented by a color change of screen output in the multimedia device;

means for converting the signal into an electric signal by receiver;

means for comparing a level of the electric signal with a reference level and outputting a comparison result signal; and

means for judging whether the downloaded data has an error based on the comparison result signal.

6. The data download system as claimed in claim 5, wherein the level comparison means is an analog level comparator which adjusts the refernce level until the error is not detected.

7. A data download system transmitting the data from a multimedia device to a receiver comprising the steps of:

means for generating a signal which comprises the data represented by a color change of screen output in the multimedia device;

means for converting the signal in step a) into an electric signal by receiver;

means for converting the electric signal into a digital signal;

means for comparing the digital signal with a reference value and outputting a comparison result signal; and

means for judging whether the downloaded data has an error based on the comparison result signal.

8. The data download system as claimed in claim 7, wherein the level comparison means is a software comparison section which adjusts the reference value until the error is not detected.