The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 1995
Filed:
Mar. 08, 1994
Noriya Sakamoto, Yokohama, JP;
Tatsuya Ishikawa, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A system capable of performing compatible transmitting and receiving processes, regardless of whether a TV signal on the transmission side is a high-resolution signal or a low-resolution signal or whether the reception side includes a high-resolution display unit or a low-resolution display unit. On the transmission side, a frequency division circuit divides a high-resolution TV signal into signals in a plurality of frequency bands. The signals in each frequency band are converted into signals of a horizontal and vertical low band (a low-resolution TV signal band). The converted signals are coded by coding units, which transmit the coded signals. On the reception side, the coded signals multiplexed on the transmission side are separated and decoded at decoding units. A frequency synthesizing circuit restores the frequency bands of the decoded signals to the original bands. Then, the resulting signals are displayed with a high resolution. A low-resolution signal is coded and then transmitted. The coded signal is decoded on the reception side. The decoded signal is interpolated at an interpolation circuit. The interpolated signal is then displayed on a high-resolution display unit.