Patents by Inventor Chih-Chou Shih

Chih-Chou Shih has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20040221317
    Abstract: An addressable tap with illegal channel detection and cutting-off function consisting of a housing and a power supply module, a filter, a control module and RF switches inside said housing, which are electrically connected to said control module, is featured by: It also includes a tuning device, which can isolate random checking signals input at the front end of CATV channels. Said tuning device is electrically connected to said control module. Compared with the existing technology, the current invention has the following effects: high reliability and promptness in cutting off illegal signals; easy replacement of circuit board of the existing traditional non-addressable taps installed for enhancement to realize channel detection and cutting-off function. As this invention addressable tap can substitute the non-addressable taps in CATV network directly without separate wire laying, it is very easy in installation with very low enhancement costs.
    Type: Application
    Filed: April 19, 2004
    Publication date: November 4, 2004
    Inventors: Yung-Liang Chang, Chih-Chou Shih
  • Publication number: 20040221318
    Abstract: An addressable tap with channel tier function consisting of housing and a power supply module, a filter and demodulation module, a control module and RF switches inside said housing, which are electrically connected to said control module. Besides, it also includes secondary RF switches and high/low-pass filters. Each of said RF switches is electrically connected to at least to two secondary RF switches, which are electrically connected to said control module separately and at the same time connected to at least two low-pass filters to form a terminal together with said low-pass filters of said RF switch in parallel; Compared with the existing technology, the current invention has the following effects: Filter has high precision; Bandwidth/Channel isolation is higher than 50 dB; it is only necessary to directly replace the existing non-addressable taps in CATV network with the current invention addressable taps without extra wiring. It is easy in installation at low costs.
    Type: Application
    Filed: April 19, 2004
    Publication date: November 4, 2004
    Inventors: Yung-Liang Chang, Chih-Chou Shih
  • Publication number: 20040221316
    Abstract: An addressable tap capable of detecting number of TV sets online to watch CATV programs consisting of a main block and a cable connecting from the terminal of said main block and the user. Said main block consists of a main central processing unit (CPU) and RF switches that are electrically connected is featured by: Said cable is equipped with a locking device at its user end and this locking device consists of a detection device and a sub-CPU that communicates with said main CPU; said detection device is electrically connected to the sub-CPU; In case said locking device is plugged out, the detection device will detect the information and transmit it to said microprocessor, which will send the information to said main CPU. Said main CPU will instruct the RF switches to shut off CATV signals at the terminal. the present invention has the following effects: CATV operators can collect different fees in accordance with number of TV sets online to watch TV programs and avoid income losses of CATV operators.
    Type: Application
    Filed: April 19, 2004
    Publication date: November 4, 2004
    Inventors: Yung-Liang Chang, Chih-chou Shih
  • Publication number: 20040221314
    Abstract: An ADTap status collect, verification device that can be used in CATV addressable taps is featured by: a fed-back signal monitor located at the front of addressable tap and a fed-back signal detector; Said monitor consists of a receiving circuit, a CPU and radio frequency (RF) transmitting circuit. Said receiving circuit and radio frequency (RF) transmitting circuit are electrically connected with the CPU separately; Said detector consists of radio frequency (RF) receiving circuit, CPU and displaying circuit; said radio frequency (RF) receiving circuit and displaying circuit are electrically connected to CPU; Said monitor and detector are linked for communications. Compared with the existing technology, the present invention has the following effects: by way of supervising the cutting-off status of RF switches of the addressable taps capable of payment collection management, full management on payment collection can be realized. It is easy in management at low management costs.
    Type: Application
    Filed: April 19, 2004
    Publication date: November 4, 2004
    Inventors: Yung-Liang Chang, Chih-chou Shih
  • Publication number: 20040187163
    Abstract: An addressable Tap used in cable TV networks consisting of a power supply module, a filter demodulation module, a control module and 8 switches. Said power supply module, filter demodulation module and switches are electrically connected to the control module. Said modules and switches are all installed on a PCB and contained in a housing, which is compatible and about plus minus 30% of the existing traditional installed Tap in size; said control module uses high performance microprocessor, switches are micro RF switches in order to be of the smallest total size. Compared with the existing technology, this invention is convenient in installation with low costs and will not interrupt the transmitted CATV signal. This invention has excellent control effects by high isolation and with interference signal on this RF switch for its direct cutting-off signals to users who owe payments, its continuous rapid switching between on and off or its ability to add interference into the signals.
    Type: Application
    Filed: March 16, 2004
    Publication date: September 23, 2004
    Inventors: Yung-Liang Chang, Chih-Chou Shih