Back to results
US 4,088,958 AGranted
Integrated circuit for a programmable television receiver
AssigneeTokyo Shibaura Electric Co., Ltd.
InventorsYasoji Suzuki, Tomohisa Shigematsu, Nawoyuki Kokado, Yukinori Kudo
Life of this patent
Estimating the term…
Abstract
An integrated circuit for a programmable television receiver comprises a memory for storing a plurality of programs, a digital clock and a character generating circuit for generating character signals for displaying the programs in the memory and/or time of the digital clock on the screen of a television receiver. The integrated circuit uses dynamic circuits to reduce the number of elements required, and CMOS transistors to attain a lower power dissipation.
Claims5
An integrated circuit for use in a programmable television receiver comprising:
- an oscillator to which a quartz crystal is to be externally coupled;
- a digital clock coupled to said oscillator;
- a memory for storing a plurality of programs each including time data and associated channel data and having a plurality of recirculating dynamic shift registers each adapted to store one program;
- a character generating circuit coupled to said memory and adapted to generate character signals to permit the content of said memory to be displayed on the screen of a cathode ray tube of a television receiver;
- circuit means coupled to the output of said oscillator to generate shift pulses for driving said recirculating dynamic shift registers in said memory;
- time comparision means coupled to the outputs of said memory and said digital clock for comparing the time data in said memory and the time of said digital clock;
- means to readout said channel data from said memory;
- and
- means responsive to said time comparing means and said readout means to form a program execution output based on said channel data when a coincidence occurs between the time data in said memory and the time of said digital clock.
6 more elements
Dependencies are inferred from the claim text.