Logic circuitry for a replicable print cartridge
First Claim
1. A logic circuitry package for association with a replaceable print cartridge, the logic circuitry package comprising:
- a timer;
a serial data bus interface including a data contact and a clock contact, the serial data bus interface to interface with a serial data bus of a printer; and
logic circuitry to, in response to a first command encoding a time period, sent to a communication address of the logic circuitry package via the serial data bus interface by the printer;
initiate a low voltage on the data contact;
wait for a duration based on the time period, the timer to track the duration independent of a clock signal at the clock contact from the serial data bus; and
after the duration, cause the data contact to assume a second voltage different than the low voltage.
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Accused Products
Abstract
Logic circuitry packages for association with replaceable print apparatus components are disclosed herein. An example logic circuitry package includes a timer and a serial data bus interface including a data contact and a clock contact, the serial data bus interface to interface with a serial data bus of a printer. The example logic circuitry package also includes logic circuitry to, in response to a first command sent to the logic circuitry package via the serial data bus of the printer: initiate a low voltage on the data contact; wait for a time period tracked by the timer to expire, without reference to a clock signal at the clock contact from the serial data bus; and upon expiration of the time period, cause the data contact to assume a second voltage different than the low voltage. The first command specifies a duration of the time period and the example logic circuitry is to maintain the low voltage on the data contact based on the duration of the time period.
122 Citations
21 Claims
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1. A logic circuitry package for association with a replaceable print cartridge, the logic circuitry package comprising:
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a timer; a serial data bus interface including a data contact and a clock contact, the serial data bus interface to interface with a serial data bus of a printer; and logic circuitry to, in response to a first command encoding a time period, sent to a communication address of the logic circuitry package via the serial data bus interface by the printer; initiate a low voltage on the data contact; wait for a duration based on the time period, the timer to track the duration independent of a clock signal at the clock contact from the serial data bus; and after the duration, cause the data contact to assume a second voltage different than the low voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A replaceable print cartridge couplable to a print apparatus, the replaceable print cartridge comprising:
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a reservoir to contain a print material; a timer; a serial data bus interface including a data contact and a clock contact, the serial bus interface couplable to a serial data bus of the print apparatus; and logic circuitry to respond to a first command to determine a location of the replaceable print cartridge coupled to the print apparatus, the first command specifying a time period, and the logic circuitry to; initiate a low voltage on the data contact; monitor a timer and wait for a time period tracked by the timer to expire, the time period tracked without reference to a clock signal at the clock contact from the serial data bus; maintain the low voltage on the data contact for a duration based on the time period; and upon expiration of the time period, cause the data contact to assume a second voltage different than the low voltage. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification