KR-102964597-B1 - Accessories, Power Management IC, and Communication Systems

KR102964597B1KR 102964597 B1KR102964597 B1KR 102964597B1KR-102964597-B1

Abstract

A communication system comprising a case capable of supplying power, a charging line for transmitting and receiving a charging signal, and an accessory capable of being connected to the case by a GND line set to a reference voltage, wherein the accessory comprises a request operation determination circuit that determines one operation required of the accessory in response to the voltage level of the charging signal and the duration of the voltage level. Additionally, a communication system comprising a case, an accessory, and a power management IC provided in the accessory and connected to the case by a charging line and a GND line, wherein the power management IC comprises a request operation determination circuit that determines one operation required of the accessory in response to the voltage level of the charging signal and the duration of the voltage level.

Inventors

스기야마 사토시
아리사카 나오야

Assignees

소니 세미컨덕터 솔루션즈 가부시키가이샤

Dates

Publication Date: 20260513
Application Date: 20200316
Priority Date: 20190520

Claims (16)

As an accessory capable of being connected to a case by a charging line that transmits and receives a charging signal and a GND line set to a reference voltage, A request operation determination circuit that determines one operation required of the accessory in response to the voltage level of the charging signal and the duration of the voltage level, and The accessory-side battery capable of being charged by the above charging signal, and a signal processing circuit capable of processing the charging signal input from the above case and also switching to a sleep state, An accessory characterized in that the operation that can be requested from the accessory includes an initialization operation that initializes the system of the accessory, a charging operation that charges the battery on the accessory side, and a communication operation in which the request operation determination circuit from the case communicates in a unidirectional manner, and the signal processing circuit and the case communicate in a bidirectional manner.
In paragraph 1, An accessory characterized by the above-mentioned request operation determination circuit determining that if the voltage level exceeds the reference voltage and remains lower than a preset first threshold voltage for a preset first threshold time, the one operation is determined to be the communication operation; if the voltage level reaches the first threshold voltage for a preset second threshold time, the one operation is determined to be the charging operation; and if the voltage level reaches a second threshold voltage that is preset higher than the first threshold voltage for a preset third threshold time, the one operation is determined to be the initialization operation.
In paragraph 2, An operation that can be required of the above accessory includes a return operation that returns the signal processing circuit in the sleep state, and An accessory characterized in that the above request operation determination circuit determines that one operation is the return operation when it detects a state in which the voltage level exceeds the reference voltage and is lower than a preset first threshold voltage.
In paragraph 2, An operation that can be required of the above accessory includes a resting operation that switches the operating signal processing circuit to the sleep state, and An accessory characterized by the above-mentioned request operation determination circuit determining that the requested operation is the rest operation when the voltage level, which had been exceeding the above-mentioned reference voltage, is lowered to the above-mentioned reference voltage.
A power management IC that is provided in an accessory operated by power, and is also connected to a case capable of supplying power, a charging line that transmits and receives a charging signal, and a GND line set to a reference voltage, A request operation determination circuit is provided to determine one operation required of the accessory in response to the voltage level of the charging signal and the duration of the voltage level, and The above accessory comprises an accessory-side battery capable of being charged by the charging signal, and a signal processing circuit capable of processing the charging signal input from the case and also switching to a sleep state. A power management IC characterized in that the operation that can be requested from the above accessory includes an initialization operation that initializes the system of the above accessory, a charging operation that charges the battery on the accessory side, and a communication operation in which the request operation determination circuit from the case communicates in a unidirectional manner, and the signal processing circuit and the case communicate in a bidirectional manner.
In paragraph 5, A power management IC characterized by the above-described request operation determination circuit determining that if the voltage level exceeds the reference voltage and remains lower than a preset first threshold voltage for a preset first threshold time, the one operation is determined to be the communication operation; if the voltage level reaches the first threshold voltage for a preset second threshold time, the one operation is determined to be the charging operation; and if the voltage level reaches a second threshold voltage that is preset higher than the first threshold voltage for a preset third threshold time, the one operation is determined to be the initialization operation.
In paragraph 6, An operation that can be required of the above accessory includes a return operation that returns the signal processing circuit in the sleep state, and A power management IC characterized by the above-mentioned request operation determination circuit determining that one operation is the return operation when it detects a state in which the voltage level exceeds the reference voltage and is lower than a preset first threshold voltage.
In paragraph 6, An operation that can be required of the above accessory includes a resting operation that switches the operating signal processing circuit to the sleep state, and A power management IC characterized by the above-mentioned request operation determination circuit determining that the requested operation is the idle operation when the voltage level, which had been exceeding the reference voltage, drops to the reference voltage.
A communication system comprising a case capable of supplying power, a charging line for transmitting and receiving a charging signal, and an accessory capable of being connected to the case by a GND line set to a reference voltage, The above accessory is, A request operation determination circuit that determines one operation required of the accessory in response to the voltage level of the charging signal and the duration of the voltage level, and The accessory-side battery capable of being charged by the above charging signal, and a signal processing circuit capable of processing the charging signal input from the above case and also switching to a sleep state, A communication system characterized by the fact that the operation that can be requested from the above accessory includes an initialization operation that initializes the system of the above accessory, a charging operation that charges the battery on the accessory side, and a communication operation in which the request operation determination circuit from the case communicates in a unidirectional manner, and the signal processing circuit and the case communicate in a bidirectional manner.
In Paragraph 9, A communication system characterized by the above-described request operation determination circuit determining that if the voltage level exceeds the reference voltage and remains lower than a preset first threshold voltage for a preset first threshold time, the one operation is determined to be the communication operation; if the voltage level reaches the first threshold voltage for a preset second threshold time, the one operation is determined to be the charging operation; and if the voltage level reaches a second threshold voltage that is preset higher than the first threshold voltage for a preset third threshold time, the one operation is determined to be the initialization operation.
In Paragraph 10, An operation that can be required of the above accessory includes a return operation that returns the signal processing circuit in the sleep state, and A communication system characterized in that the above request operation determination circuit determines that one operation is the return operation when it detects a state in which the voltage level exceeds the reference voltage and is lower than a preset first threshold voltage.
In Paragraph 10, An operation that can be required of the above accessory includes a resting operation that switches the operating signal processing circuit to the sleep state, and A communication system characterized by the above-mentioned request operation determination circuit determining that the above-mentioned requested operation is the above-mentioned idle operation when the above-mentioned voltage level, which had been exceeding the above-mentioned reference voltage, is lowered to the above-mentioned reference voltage.
A communication system comprising a case capable of supplying power, an accessory operated by power, and a power management IC provided in the accessory and also connected to the case capable of supplying power by a charging line that transmits and receives a charging signal and a GND line set to a reference voltage, The power management IC comprises a request operation determination circuit that determines one operation required of the accessory in response to the voltage level of the charging signal and the duration of the voltage level, and The above accessory comprises an accessory-side battery capable of being charged by the charging signal, and a signal processing circuit capable of processing the charging signal input from the case and also switching to a sleep state. A communication system characterized by the fact that the operation that can be requested from the above accessory includes an initialization operation that initializes the system of the above accessory, a charging operation that charges the battery on the accessory side, and a communication operation in which the request operation determination circuit from the case communicates in a unidirectional manner, and the signal processing circuit and the case communicate in a bidirectional manner.
In Paragraph 13, A communication system characterized by the above-described request operation determination circuit determining that if the voltage level exceeds the reference voltage and remains lower than a preset first threshold voltage for a preset first threshold time, the one operation is determined to be the communication operation; if the voltage level reaches the first threshold voltage for a preset second threshold time, the one operation is determined to be the charging operation; and if the voltage level reaches a second threshold voltage that is preset higher than the first threshold voltage for a preset third threshold time, the one operation is determined to be the initialization operation.
In Paragraph 14, An operation that can be required of the above accessory includes a return operation that returns the signal processing circuit in the sleep state, and A communication system characterized in that the above request operation determination circuit determines that one operation is the return operation when it detects a state in which the voltage level exceeds the reference voltage and is lower than a preset first threshold voltage.
In Paragraph 14, An operation that can be required of the above accessory includes a resting operation that switches the operating signal processing circuit to the sleep state, and A communication system characterized by the above-mentioned request operation determination circuit determining that the above-mentioned requested operation is the above-mentioned idle operation when the above-mentioned voltage level, which had been exceeding the above-mentioned reference voltage, is lowered to the above-mentioned reference voltage.

Description

Accessories, Power Management IC, and Communication Systems The present disclosure relates to a case and an accessory for transmitting and receiving signals, a power management IC provided in the accessory, and a communication system equipped with the accessory. In accessories such as wireless earphones, charging or communication is performed between the case (docking station, etc.) and the accessory. As a configuration for connecting the case and the accessory, there is a configuration that connects using two connection lines (charging line, GND line). For example, Patent Document 1 discloses a system that controls the on/off of an enable signal output by a driver of a case for a power terminal of an accessory connected to a case with two connection lines, and communicates based on whether the enable signal is superimposed on the output of a communication signal. FIG. 1 is a drawing illustrating the configuration of a communication system in a first embodiment. FIG. 2 is a diagram illustrating an example of the configuration of a request operation determination circuit. FIG. 3 is a diagram illustrating the operation performed by a communication system. FIG. 4 is a time chart illustrating the operation performed by a communication system. FIG. 5 is a time chart illustrating the operation performed by a communication system. FIG. 6 is a diagram illustrating the operation performed by a communication system. FIG. 7 is a time chart illustrating the operation performed by a communication system. FIG. 8 is a diagram illustrating the operation performed by a communication system. FIG. 9 is a diagram illustrating the operation performed by a communication system. FIG. 10 is a time chart illustrating the operation performed by a communication system. FIG. 11 is a diagram illustrating the operation performed by a communication system. FIG. 12 is a time chart illustrating the operation performed by a communication system. FIG. 13 is a diagram illustrating the operation performed by a communication system. FIG. 14 is a time chart illustrating the operation performed by a communication system. FIG. 15 is a diagram illustrating the operation performed by a communication system. FIG. 16 is a time chart illustrating the operation performed by a communication system. FIG. 17 is a drawing illustrating the configuration of a communication system in a second embodiment. FIG. 18 is a drawing illustrating a modified example of the second embodiment. Embodiments of the present technology are described below with reference to the drawings. In the description of the drawings, identical or similar parts are denoted by identical or similar reference numerals, and redundant descriptions are omitted. Each drawing is schematic and may differ from reality. The embodiments described below are intended to illustrate devices or methods for embodying the technical concept of the present technology, and the technical concept of the present technology is not limited to the devices or methods exemplified in the embodiments below. The technical concept of the present technology may be modified in various ways within the technical scope described in the claims. (First embodiment) As illustrated in FIG. 1, the communication system (1) comprises an accessory (2) that operates by power and a case (4) capable of supplying power. The accessory (2) and the case (4) are connected by two connection lines (charging line (6), GND line (8)). The charging line (6) is formed by contacting the terminals (charging terminal: Vin) formed on the accessory (2) and the case (4), respectively, and transmits and receives a charging signal. The GND line (8) is formed by contacting the terminal (GND terminal: GND) formed on the accessory (2) and the case (4), respectively, just like the charging line (6), and is set to a reference voltage (e.g., 0[V]). <Composition of Accessories> The accessory (2) is equipped with a power management unit (PMU) (10), an accessory-side battery (20), and a signal processing circuit (30). In the first embodiment, as an example, a case is described in which the accessory (2) is a wireless earphone that acquires voice data (voice data) from a music player, etc., via wireless communication such as Bluetooth (registered trademark) and outputs voice corresponding to the voice data. (PMU) The PMU (10) is equipped with a regulator (11), a receiving path (12), a transmitting path (13), a register (14), and a request operation determination circuit (15). The regulator (11) outputs a command signal received from the request operation determination circuit (15) to the signal processing circuit (30). Additionally, the regulator (11) is equipped with a DC-DC converter and an LDO (Low Drop Out). A DC-DC converter is a circuit that switches the input power at a relatively high speed using switching elements, rectifies and smooths the switched power, and converts it into a DC power source of a desired voltage. In addition, compared to an LDO, a DC-DC con