Abstract: A small, lightweight, disposable blood flow monitor adhered directly to the skin of a patient above the vessel being monitored, such as an artery. A transducer generates an electric signal representative of a deflection of a vessel wall due to pulsatile pressure, which deflection is enhanced by a thin conductive substrate providing a mechanical advantage for the detected deflection. Control circuitry periodically stores a peak value of a deflection caused by a systolic pulse. A reference value is obtained by pressing a calibrate switch to store a value representing a systolic pulse encountered during a calibration interval. Peak values of systolic pulses are stored at predetermined intervals and compared with the reference value. A simplified display, preferably comprised of LEDs of different colors respectively represent a normal, slightly abnormal and significantly more abnormal conditions. The monitor, once turned on, remains on throughout its useful operating life.

Abstract: A sequence of data groups are modulated at a central location and coupled to a telephone line in response to a call-up signal. The sequence is transmitted through the telephone lines to a remote computer. The computer receives the signals, demodulates them, and couples them to a moemory. The data is stored at a particular address, and in coupling the data to the memory, the computer checks a flag at that address to determine whether the data has already been written over. When the flags indicate that the data received corresponds to data already written over, it signals the end of a transmission. The data stored in the memory can be accessed by an operator using input controls.

Abstract: An electronic sketching device. The electronic sketching device includes a display for providing a visual representation of a sketch on a display area. The electronic sketching device also including a cursor controller for moving a cursor on the display and a sketch controller for selectively storing the placement of the cursor on the display area as a pixel to create a sketch on the display area. A storage device, which is coupled to the sketch controller, stores a plurality of sketches. The electronic sketching device also contains a sketch memory for creating and storing a sequence of sketches which is coupled to the storage device. An animater, coupled to the storage device, sketch memory and the display, causes the stored sequence of sketches to be sequentially displayed on the display.

Abstract: An electronic sketching device. The electronic sketching device includes a display for providing a visual representation of a sketch on a display area. The electronic sketching device also including a cursor controller for moving a cursor on the display and a sketch controller for selectively storing the placement of the cursor on the display area as a pixel to create a sketch on the display area. A storage device, which is coupled to the sketch controller, stores a plurality of sketches. The electronic sketching device also contains a sketch memory for creating and storing a sequence of sketches which is coupled to the storage device. An animater, coupled to the storage device, sketch memory and the display, causes the stored sequence of sketches to be sequentially displayed on the display.